Move to library-based build

160 files changed, 12 insertions, 29495 deletions

diff --git a/app/app.iml b/app/app.iml
index bde98ae..de9c0ba 100644
--- a/app/app.iml
+++ b/app/app.iml
@@ -87,7 +87,10 @@
     </content>
     <orderEntry type="jdk" jdkName="Android API 22 Platform" jdkType="Android SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" exported="" name="jzlib-1.1.3" level="project" />
+    <orderEntry type="library" exported="" name="sshlib-2.2.0" level="project" />
+    <orderEntry type="library" exported="" name="jsocks-1.0.0" level="project" />
     <orderEntry type="library" exported="" name="support-v4-22.2.1" level="project" />
     <orderEntry type="library" exported="" name="support-annotations-22.2.1" level="project" />
   </component>
-</module>
\ No newline at end of file
+</module>
diff --git a/app/build.gradle b/app/build.gradle
index 3df0ece..1a643e6 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -108,7 +108,15 @@ tasks.create(name: "jacocoTestDebugReport", type: JacocoReport, dependsOn: "test
 
 coveralls.jacocoReportPath = "${project.buildDir}/reports/jacoco/jacocoTestDebugReport/jacocoTestDebugReport.xml"
 
+repositories {
+    maven {
+        url 'https://dl.bintray.com/connectbot/maven'
+    }
+}
+
 dependencies {
+    compile 'org.connectbot:sshlib:2.2.0'
+
     testCompile 'junit:junit:4.12'
     testCompile('org.robolectric:robolectric:3.0') {
         exclude group: 'commons-logging', module: 'commons-logging'
diff --git a/app/src/main/java/com/jcraft/jzlib/Adler32.java b/app/src/main/java/com/jcraft/jzlib/Adler32.java
deleted file mode 100644
index d8b6ef8..0000000
--- a/app/src/main/java/com/jcraft/jzlib/Adler32.java
+++ /dev/null
@@ -1,94 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-final class Adler32{
-
-  // largest prime smaller than 65536
-  static final private int BASE=65521; 
-  // NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1
-  static final private int NMAX=5552;
-
-  long adler32(long adler, byte[] buf, int index, int len){
-    if(buf == null){ return 1L; }
-
-    long s1=adler&0xffff;
-    long s2=(adler>>16)&0xffff;
-    int k;
-
-    while(len > 0) {
-      k=len<NMAX?len:NMAX;
-      len-=k;
-      while(k>=16){
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        s1+=buf[index++]&0xff; s2+=s1;
-        k-=16;
-      }
-      if(k!=0){
-        do{
-          s1+=buf[index++]&0xff; s2+=s1;
-        }
-        while(--k!=0);
-      }
-      s1%=BASE;
-      s2%=BASE;
-    }
-    return (s2<<16)|s1;
-  }
-
-  /*
-  private java.util.zip.Adler32 adler=new java.util.zip.Adler32();
-  long adler32(long value, byte[] buf, int index, int len){
-    if(value==1) {adler.reset();}
-    if(buf==null) {adler.reset();}
-    else{adler.update(buf, index, len);}
-    return adler.getValue();
-  }
-  */
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/Deflate.java b/app/src/main/java/com/jcraft/jzlib/Deflate.java
deleted file mode 100644
index 9978802..0000000
--- a/app/src/main/java/com/jcraft/jzlib/Deflate.java
+++ /dev/null
@@ -1,1623 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-public 
-final class Deflate{
-
-  static final private int MAX_MEM_LEVEL=9;
-
-  static final private int Z_DEFAULT_COMPRESSION=-1;
-
-  static final private int MAX_WBITS=15;            // 32K LZ77 window
-  static final private int DEF_MEM_LEVEL=8;
-
-  static class Config{
-    int good_length; // reduce lazy search above this match length
-    int max_lazy;    // do not perform lazy search above this match length
-    int nice_length; // quit search above this match length
-    int max_chain;
-    int func;
-    Config(int good_length, int max_lazy, 
-	   int nice_length, int max_chain, int func){
-      this.good_length=good_length;
-      this.max_lazy=max_lazy;
-      this.nice_length=nice_length;
-      this.max_chain=max_chain;
-      this.func=func;
-    }
-  }
-  
-  static final private int STORED=0;
-  static final private int FAST=1;
-  static final private int SLOW=2;
-  static final private Config[] config_table;    
-  static{
-    config_table=new Config[10];
-    //                         good  lazy  nice  chain
-    config_table[0]=new Config(0,    0,    0,    0, STORED);
-    config_table[1]=new Config(4,    4,    8,    4, FAST);
-    config_table[2]=new Config(4,    5,   16,    8, FAST);
-    config_table[3]=new Config(4,    6,   32,   32, FAST);
-
-    config_table[4]=new Config(4,    4,   16,   16, SLOW);
-    config_table[5]=new Config(8,   16,   32,   32, SLOW);
-    config_table[6]=new Config(8,   16,  128,  128, SLOW);
-    config_table[7]=new Config(8,   32,  128,  256, SLOW);
-    config_table[8]=new Config(32, 128,  258, 1024, SLOW);
-    config_table[9]=new Config(32, 258,  258, 4096, SLOW);
-  }
-
-  static final private String[] z_errmsg = {
-    "need dictionary",     // Z_NEED_DICT       2
-    "stream end",          // Z_STREAM_END      1
-    "",                    // Z_OK              0
-    "file error",          // Z_ERRNO         (-1)
-    "stream error",        // Z_STREAM_ERROR  (-2)
-    "data error",          // Z_DATA_ERROR    (-3)
-    "insufficient memory", // Z_MEM_ERROR     (-4)
-    "buffer error",        // Z_BUF_ERROR     (-5)
-    "incompatible version",// Z_VERSION_ERROR (-6)
-    ""
-  };
-
-  // block not completed, need more input or more output
-  static final private int NeedMore=0; 
-
-  // block flush performed
-  static final private int BlockDone=1; 
-
-  // finish started, need only more output at next deflate
-  static final private int FinishStarted=2;
-
-  // finish done, accept no more input or output
-  static final private int FinishDone=3;
-
-  // preset dictionary flag in zlib header
-  static final private int PRESET_DICT=0x20;
-
-  static final private int Z_FILTERED=1;
-  static final private int Z_HUFFMAN_ONLY=2;
-  static final private int Z_DEFAULT_STRATEGY=0;
-
-  static final private int Z_NO_FLUSH=0;
-  static final private int Z_PARTIAL_FLUSH=1;
-  static final private int Z_SYNC_FLUSH=2;
-  static final private int Z_FULL_FLUSH=3;
-  static final private int Z_FINISH=4;
-
-  static final private int Z_OK=0;
-  static final private int Z_STREAM_END=1;
-  static final private int Z_NEED_DICT=2;
-  static final private int Z_ERRNO=-1;
-  static final private int Z_STREAM_ERROR=-2;
-  static final private int Z_DATA_ERROR=-3;
-  static final private int Z_MEM_ERROR=-4;
-  static final private int Z_BUF_ERROR=-5;
-  static final private int Z_VERSION_ERROR=-6;
-
-  static final private int INIT_STATE=42;
-  static final private int BUSY_STATE=113;
-  static final private int FINISH_STATE=666;
-
-  // The deflate compression method
-  static final private int Z_DEFLATED=8;
-
-  static final private int STORED_BLOCK=0;
-  static final private int STATIC_TREES=1;
-  static final private int DYN_TREES=2;
-
-  // The three kinds of block type
-  static final private int Z_BINARY=0;
-  static final private int Z_ASCII=1;
-  static final private int Z_UNKNOWN=2;
-
-  static final private int Buf_size=8*2;
-
-  // repeat previous bit length 3-6 times (2 bits of repeat count)
-  static final private int REP_3_6=16; 
-
-  // repeat a zero length 3-10 times  (3 bits of repeat count)
-  static final private int REPZ_3_10=17; 
-
-  // repeat a zero length 11-138 times  (7 bits of repeat count)
-  static final private int REPZ_11_138=18; 
-
-  static final private int MIN_MATCH=3;
-  static final private int MAX_MATCH=258;
-  static final private int MIN_LOOKAHEAD=(MAX_MATCH+MIN_MATCH+1);
-
-  static final private int MAX_BITS=15;
-  static final private int D_CODES=30;
-  static final private int BL_CODES=19;
-  static final private int LENGTH_CODES=29;
-  static final private int LITERALS=256;
-  static final private int L_CODES=(LITERALS+1+LENGTH_CODES);
-  static final private int HEAP_SIZE=(2*L_CODES+1);
-
-  static final private int END_BLOCK=256;
-
-  ZStream strm;         // pointer back to this zlib stream
-  int status;           // as the name implies
-  byte[] pending_buf;   // output still pending
-  int pending_buf_size; // size of pending_buf
-  int pending_out;      // next pending byte to output to the stream
-  int pending;          // nb of bytes in the pending buffer
-  int noheader;         // suppress zlib header and adler32
-  byte data_type;       // UNKNOWN, BINARY or ASCII
-  byte method;          // STORED (for zip only) or DEFLATED
-  int last_flush;       // value of flush param for previous deflate call
-
-  int w_size;           // LZ77 window size (32K by default)
-  int w_bits;           // log2(w_size)  (8..16)
-  int w_mask;           // w_size - 1
-
-  byte[] window;
-  // Sliding window. Input bytes are read into the second half of the window,
-  // and move to the first half later to keep a dictionary of at least wSize
-  // bytes. With this organization, matches are limited to a distance of
-  // wSize-MAX_MATCH bytes, but this ensures that IO is always
-  // performed with a length multiple of the block size. Also, it limits
-  // the window size to 64K, which is quite useful on MSDOS.
-  // To do: use the user input buffer as sliding window.
-
-  int window_size;
-  // Actual size of window: 2*wSize, except when the user input buffer
-  // is directly used as sliding window.
-
-  short[] prev;
-  // Link to older string with same hash index. To limit the size of this
-  // array to 64K, this link is maintained only for the last 32K strings.
-  // An index in this array is thus a window index modulo 32K.
-
-  short[] head; // Heads of the hash chains or NIL.
-
-  int ins_h;          // hash index of string to be inserted
-  int hash_size;      // number of elements in hash table
-  int hash_bits;      // log2(hash_size)
-  int hash_mask;      // hash_size-1
-
-  // Number of bits by which ins_h must be shifted at each input
-  // step. It must be such that after MIN_MATCH steps, the oldest
-  // byte no longer takes part in the hash key, that is:
-  // hash_shift * MIN_MATCH >= hash_bits
-  int hash_shift;
-
-  // Window position at the beginning of the current output block. Gets
-  // negative when the window is moved backwards.
-
-  int block_start;
-
-  int match_length;           // length of best match
-  int prev_match;             // previous match
-  int match_available;        // set if previous match exists
-  int strstart;               // start of string to insert
-  int match_start;            // start of matching string
-  int lookahead;              // number of valid bytes ahead in window
-
-  // Length of the best match at previous step. Matches not greater than this
-  // are discarded. This is used in the lazy match evaluation.
-  int prev_length;
-
-  // To speed up deflation, hash chains are never searched beyond this
-  // length.  A higher limit improves compression ratio but degrades the speed.
-  int max_chain_length;
-
-  // Attempt to find a better match only when the current match is strictly
-  // smaller than this value. This mechanism is used only for compression
-  // levels >= 4.
-  int max_lazy_match;
-
-  // Insert new strings in the hash table only if the match length is not
-  // greater than this length. This saves time but degrades compression.
-  // max_insert_length is used only for compression levels <= 3.
-
-  int level;    // compression level (1..9)
-  int strategy; // favor or force Huffman coding
-
-  // Use a faster search when the previous match is longer than this
-  int good_match;
-
-  // Stop searching when current match exceeds this
-  int nice_match;
-
-  short[] dyn_ltree;       // literal and length tree
-  short[] dyn_dtree;       // distance tree
-  short[] bl_tree;         // Huffman tree for bit lengths
-
-  Tree l_desc=new Tree();  // desc for literal tree
-  Tree d_desc=new Tree();  // desc for distance tree
-  Tree bl_desc=new Tree(); // desc for bit length tree
-
-  // number of codes at each bit length for an optimal tree
-  short[] bl_count=new short[MAX_BITS+1];
-
-  // heap used to build the Huffman trees
-  int[] heap=new int[2*L_CODES+1];
-
-  int heap_len;               // number of elements in the heap
-  int heap_max;               // element of largest frequency
-  // The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
-  // The same heap array is used to build all trees.
-
-  // Depth of each subtree used as tie breaker for trees of equal frequency
-  byte[] depth=new byte[2*L_CODES+1];
-
-  int l_buf;               // index for literals or lengths */
-
-  // Size of match buffer for literals/lengths.  There are 4 reasons for
-  // limiting lit_bufsize to 64K:
-  //   - frequencies can be kept in 16 bit counters
-  //   - if compression is not successful for the first block, all input
-  //     data is still in the window so we can still emit a stored block even
-  //     when input comes from standard input.  (This can also be done for
-  //     all blocks if lit_bufsize is not greater than 32K.)
-  //   - if compression is not successful for a file smaller than 64K, we can
-  //     even emit a stored file instead of a stored block (saving 5 bytes).
-  //     This is applicable only for zip (not gzip or zlib).
-  //   - creating new Huffman trees less frequently may not provide fast
-  //     adaptation to changes in the input data statistics. (Take for
-  //     example a binary file with poorly compressible code followed by
-  //     a highly compressible string table.) Smaller buffer sizes give
-  //     fast adaptation but have of course the overhead of transmitting
-  //     trees more frequently.
-  //   - I can't count above 4
-  int lit_bufsize;
-
-  int last_lit;      // running index in l_buf
-
-  // Buffer for distances. To simplify the code, d_buf and l_buf have
-  // the same number of elements. To use different lengths, an extra flag
-  // array would be necessary.
-
-  int d_buf;         // index of pendig_buf
-
-  int opt_len;        // bit length of current block with optimal trees
-  int static_len;     // bit length of current block with static trees
-  int matches;        // number of string matches in current block
-  int last_eob_len;   // bit length of EOB code for last block
-
-  // Output buffer. bits are inserted starting at the bottom (least
-  // significant bits).
-  short bi_buf;
-
-  // Number of valid bits in bi_buf.  All bits above the last valid bit
-  // are always zero.
-  int bi_valid;
-
-  Deflate(){
-    dyn_ltree=new short[HEAP_SIZE*2];
-    dyn_dtree=new short[(2*D_CODES+1)*2]; // distance tree
-    bl_tree=new short[(2*BL_CODES+1)*2];  // Huffman tree for bit lengths
-  }
-
-  void lm_init() {
-    window_size=2*w_size;
-
-    head[hash_size-1]=0;
-    for(int i=0; i<hash_size-1; i++){
-      head[i]=0;
-    }
-
-    // Set the default configuration parameters:
-    max_lazy_match   = Deflate.config_table[level].max_lazy;
-    good_match       = Deflate.config_table[level].good_length;
-    nice_match       = Deflate.config_table[level].nice_length;
-    max_chain_length = Deflate.config_table[level].max_chain;
-
-    strstart = 0;
-    block_start = 0;
-    lookahead = 0;
-    match_length = prev_length = MIN_MATCH-1;
-    match_available = 0;
-    ins_h = 0;
-  }
-
-  // Initialize the tree data structures for a new zlib stream.
-  void tr_init(){
-
-    l_desc.dyn_tree = dyn_ltree;
-    l_desc.stat_desc = StaticTree.static_l_desc;
-
-    d_desc.dyn_tree = dyn_dtree;
-    d_desc.stat_desc = StaticTree.static_d_desc;
-
-    bl_desc.dyn_tree = bl_tree;
-    bl_desc.stat_desc = StaticTree.static_bl_desc;
-
-    bi_buf = 0;
-    bi_valid = 0;
-    last_eob_len = 8; // enough lookahead for inflate
-
-    // Initialize the first block of the first file:
-    init_block();
-  }
-
-  void init_block(){
-    // Initialize the trees.
-    for(int i = 0; i < L_CODES; i++) dyn_ltree[i*2] = 0;
-    for(int i= 0; i < D_CODES; i++) dyn_dtree[i*2] = 0;
-    for(int i= 0; i < BL_CODES; i++) bl_tree[i*2] = 0;
-
-    dyn_ltree[END_BLOCK*2] = 1;
-    opt_len = static_len = 0;
-    last_lit = matches = 0;
-  }
-
-  // Restore the heap property by moving down the tree starting at node k,
-  // exchanging a node with the smallest of its two sons if necessary, stopping
-  // when the heap property is re-established (each father smaller than its
-  // two sons).
-  void pqdownheap(short[] tree,  // the tree to restore
-		  int k          // node to move down
-		  ){
-    int v = heap[k];
-    int j = k << 1;  // left son of k
-    while (j <= heap_len) {
-      // Set j to the smallest of the two sons:
-      if (j < heap_len &&
-	  smaller(tree, heap[j+1], heap[j], depth)){
-	j++;
-      }
-      // Exit if v is smaller than both sons
-      if(smaller(tree, v, heap[j], depth)) break;
-
-      // Exchange v with the smallest son
-      heap[k]=heap[j];  k = j;
-      // And continue down the tree, setting j to the left son of k
-      j <<= 1;
-    }
-    heap[k] = v;
-  }
-
-  static boolean smaller(short[] tree, int n, int m, byte[] depth){
-    short tn2=tree[n*2];
-    short tm2=tree[m*2];
-    return (tn2<tm2 ||
-	    (tn2==tm2 && depth[n] <= depth[m]));
-  }
-
-  // Scan a literal or distance tree to determine the frequencies of the codes
-  // in the bit length tree.
-  void scan_tree (short[] tree,// the tree to be scanned
-		  int max_code // and its largest code of non zero frequency
-		  ){
-    int n;                     // iterates over all tree elements
-    int prevlen = -1;          // last emitted length
-    int curlen;                // length of current code
-    int nextlen = tree[0*2+1]; // length of next code
-    int count = 0;             // repeat count of the current code
-    int max_count = 7;         // max repeat count
-    int min_count = 4;         // min repeat count
-
-    if (nextlen == 0){ max_count = 138; min_count = 3; }
-    tree[(max_code+1)*2+1] = (short)0xffff; // guard
-
-    for(n = 0; n <= max_code; n++) {
-      curlen = nextlen; nextlen = tree[(n+1)*2+1];
-      if(++count < max_count && curlen == nextlen) {
-	continue;
-      }
-      else if(count < min_count) {
-	bl_tree[curlen*2] += count;
-      }
-      else if(curlen != 0) {
-	if(curlen != prevlen) bl_tree[curlen*2]++;
-	bl_tree[REP_3_6*2]++;
-      }
-      else if(count <= 10) {
-	bl_tree[REPZ_3_10*2]++;
-      }
-      else{
-	bl_tree[REPZ_11_138*2]++;
-      }
-      count = 0; prevlen = curlen;
-      if(nextlen == 0) {
-	max_count = 138; min_count = 3;
-      }
-      else if(curlen == nextlen) {
-	max_count = 6; min_count = 3;
-      }
-      else{
-	max_count = 7; min_count = 4;
-      }
-    }
-  }
-
-  // Construct the Huffman tree for the bit lengths and return the index in
-  // bl_order of the last bit length code to send.
-  int build_bl_tree(){
-    int max_blindex;  // index of last bit length code of non zero freq
-
-    // Determine the bit length frequencies for literal and distance trees
-    scan_tree(dyn_ltree, l_desc.max_code);
-    scan_tree(dyn_dtree, d_desc.max_code);
-
-    // Build the bit length tree:
-    bl_desc.build_tree(this);
-    // opt_len now includes the length of the tree representations, except
-    // the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
-
-    // Determine the number of bit length codes to send. The pkzip format
-    // requires that at least 4 bit length codes be sent. (appnote.txt says
-    // 3 but the actual value used is 4.)
-    for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
-      if (bl_tree[Tree.bl_order[max_blindex]*2+1] != 0) break;
-    }
-    // Update opt_len to include the bit length tree and counts
-    opt_len += 3*(max_blindex+1) + 5+5+4;
-
-    return max_blindex;
-  }
-
-
-  // Send the header for a block using dynamic Huffman trees: the counts, the
-  // lengths of the bit length codes, the literal tree and the distance tree.
-  // IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
-  void send_all_trees(int lcodes, int dcodes, int blcodes){
-    int rank;                    // index in bl_order
-
-    send_bits(lcodes-257, 5); // not +255 as stated in appnote.txt
-    send_bits(dcodes-1,   5);
-    send_bits(blcodes-4,  4); // not -3 as stated in appnote.txt
-    for (rank = 0; rank < blcodes; rank++) {
-      send_bits(bl_tree[Tree.bl_order[rank]*2+1], 3);
-    }
-    send_tree(dyn_ltree, lcodes-1); // literal tree
-    send_tree(dyn_dtree, dcodes-1); // distance tree
-  }
-
-  // Send a literal or distance tree in compressed form, using the codes in
-  // bl_tree.
-  void send_tree (short[] tree,// the tree to be sent
-		  int max_code // and its largest code of non zero frequency
-		  ){
-    int n;                     // iterates over all tree elements
-    int prevlen = -1;          // last emitted length
-    int curlen;                // length of current code
-    int nextlen = tree[0*2+1]; // length of next code
-    int count = 0;             // repeat count of the current code
-    int max_count = 7;         // max repeat count
-    int min_count = 4;         // min repeat count
-
-    if (nextlen == 0){ max_count = 138; min_count = 3; }
-
-    for (n = 0; n <= max_code; n++) {
-      curlen = nextlen; nextlen = tree[(n+1)*2+1];
-      if(++count < max_count && curlen == nextlen) {
-	continue;
-      }
-      else if(count < min_count) {
-	do { send_code(curlen, bl_tree); } while (--count != 0);
-      }
-      else if(curlen != 0){
-	if(curlen != prevlen){
-	  send_code(curlen, bl_tree); count--;
-	}
-	send_code(REP_3_6, bl_tree); 
-	send_bits(count-3, 2);
-      }
-      else if(count <= 10){
-	send_code(REPZ_3_10, bl_tree); 
-	send_bits(count-3, 3);
-      }
-      else{
-	send_code(REPZ_11_138, bl_tree);
-	send_bits(count-11, 7);
-      }
-      count = 0; prevlen = curlen;
-      if(nextlen == 0){
-	max_count = 138; min_count = 3;
-      }
-      else if(curlen == nextlen){
-	max_count = 6; min_count = 3;
-      }
-      else{
-	max_count = 7; min_count = 4;
-      }
-    }
-  }
-
-  // Output a byte on the stream.
-  // IN assertion: there is enough room in pending_buf.
-  final void put_byte(byte[] p, int start, int len){
-    System.arraycopy(p, start, pending_buf, pending, len);
-    pending+=len;
-  }
-
-  final void put_byte(byte c){
-    pending_buf[pending++]=c;
-  }
-  final void put_short(int w) {
-    put_byte((byte)(w/*&0xff*/));
-    put_byte((byte)(w>>>8));
-  }
-  final void putShortMSB(int b){
-    put_byte((byte)(b>>8));
-    put_byte((byte)(b/*&0xff*/));
-  }   
-
-  final void send_code(int c, short[] tree){
-    int c2=c*2;
-    send_bits((tree[c2]&0xffff), (tree[c2+1]&0xffff));
-  }
-
-  void send_bits(int value, int length){
-    int len = length;
-    if (bi_valid > (int)Buf_size - len) {
-      int val = value;
-//      bi_buf |= (val << bi_valid);
-      bi_buf |= ((val << bi_valid)&0xffff);
-      put_short(bi_buf);
-      bi_buf = (short)(val >>> (Buf_size - bi_valid));
-      bi_valid += len - Buf_size;
-    } else {
-//      bi_buf |= (value) << bi_valid;
-      bi_buf |= (((value) << bi_valid)&0xffff);
-      bi_valid += len;
-    }
-  }
-
-  // Send one empty static block to give enough lookahead for inflate.
-  // This takes 10 bits, of which 7 may remain in the bit buffer.
-  // The current inflate code requires 9 bits of lookahead. If the
-  // last two codes for the previous block (real code plus EOB) were coded
-  // on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode
-  // the last real code. In this case we send two empty static blocks instead
-  // of one. (There are no problems if the previous block is stored or fixed.)
-  // To simplify the code, we assume the worst case of last real code encoded
-  // on one bit only.
-  void _tr_align(){
-    send_bits(STATIC_TREES<<1, 3);
-    send_code(END_BLOCK, StaticTree.static_ltree);
-
-    bi_flush();
-
-    // Of the 10 bits for the empty block, we have already sent
-    // (10 - bi_valid) bits. The lookahead for the last real code (before
-    // the EOB of the previous block) was thus at least one plus the length
-    // of the EOB plus what we have just sent of the empty static block.
-    if (1 + last_eob_len + 10 - bi_valid < 9) {
-      send_bits(STATIC_TREES<<1, 3);
-      send_code(END_BLOCK, StaticTree.static_ltree);
-      bi_flush();
-    }
-    last_eob_len = 7;
-  }
-
-
-  // Save the match info and tally the frequency counts. Return true if
-  // the current block must be flushed.
-  boolean _tr_tally (int dist, // distance of matched string
-		     int lc // match length-MIN_MATCH or unmatched char (if dist==0)
-		     ){
-
-    pending_buf[d_buf+last_lit*2] = (byte)(dist>>>8);
-    pending_buf[d_buf+last_lit*2+1] = (byte)dist;
-
-    pending_buf[l_buf+last_lit] = (byte)lc; last_lit++;
-
-    if (dist == 0) {
-      // lc is the unmatched char
-      dyn_ltree[lc*2]++;
-    } 
-    else {
-      matches++;
-      // Here, lc is the match length - MIN_MATCH
-      dist--;             // dist = match distance - 1
-      dyn_ltree[(Tree._length_code[lc]+LITERALS+1)*2]++;
-      dyn_dtree[Tree.d_code(dist)*2]++;
-    }
-
-    if ((last_lit & 0x1fff) == 0 && level > 2) {
-      // Compute an upper bound for the compressed length
-      int out_length = last_lit*8;
-      int in_length = strstart - block_start;
-      int dcode;
-      for (dcode = 0; dcode < D_CODES; dcode++) {
-	out_length += (int)dyn_dtree[dcode*2] *
-	  (5L+Tree.extra_dbits[dcode]);
-      }
-      out_length >>>= 3;
-      if ((matches < (last_lit/2)) && out_length < in_length/2) return true;
-    }
-
-    return (last_lit == lit_bufsize-1);
-    // We avoid equality with lit_bufsize because of wraparound at 64K
-    // on 16 bit machines and because stored blocks are restricted to
-    // 64K-1 bytes.
-  }
-
-  // Send the block data compressed using the given Huffman trees
-  void compress_block(short[] ltree, short[] dtree){
-    int  dist;      // distance of matched string
-    int lc;         // match length or unmatched char (if dist == 0)
-    int lx = 0;     // running index in l_buf
-    int code;       // the code to send
-    int extra;      // number of extra bits to send
-
-    if (last_lit != 0){
-      do{
-	dist=((pending_buf[d_buf+lx*2]<<8)&0xff00)|
-	  (pending_buf[d_buf+lx*2+1]&0xff);
-	lc=(pending_buf[l_buf+lx])&0xff; lx++;
-
-	if(dist == 0){
-	  send_code(lc, ltree); // send a literal byte
-	} 
-	else{
-	  // Here, lc is the match length - MIN_MATCH
-	  code = Tree._length_code[lc];
-
-	  send_code(code+LITERALS+1, ltree); // send the length code
-	  extra = Tree.extra_lbits[code];
-	  if(extra != 0){
-	    lc -= Tree.base_length[code];
-	    send_bits(lc, extra);       // send the extra length bits
-	  }
-	  dist--; // dist is now the match distance - 1
-	  code = Tree.d_code(dist);
-
-	  send_code(code, dtree);       // send the distance code
-	  extra = Tree.extra_dbits[code];
-	  if (extra != 0) {
-	    dist -= Tree.base_dist[code];
-	    send_bits(dist, extra);   // send the extra distance bits
-	  }
-	} // literal or match pair ?
-
-	// Check that the overlay between pending_buf and d_buf+l_buf is ok:
-      }
-      while (lx < last_lit);
-    }
-
-    send_code(END_BLOCK, ltree);
-    last_eob_len = ltree[END_BLOCK*2+1];
-  }
-
-  // Set the data type to ASCII or BINARY, using a crude approximation:
-  // binary if more than 20% of the bytes are <= 6 or >= 128, ascii otherwise.
-  // IN assertion: the fields freq of dyn_ltree are set and the total of all
-  // frequencies does not exceed 64K (to fit in an int on 16 bit machines).
-  void set_data_type(){
-    int n = 0;
-    int  ascii_freq = 0;
-    int  bin_freq = 0;
-    while(n<7){ bin_freq += dyn_ltree[n*2]; n++;}
-    while(n<128){ ascii_freq += dyn_ltree[n*2]; n++;}
-    while(n<LITERALS){ bin_freq += dyn_ltree[n*2]; n++;}
-    data_type=(byte)(bin_freq > (ascii_freq >>> 2) ? Z_BINARY : Z_ASCII);
-  }
-
-  // Flush the bit buffer, keeping at most 7 bits in it.
-  void bi_flush(){
-    if (bi_valid == 16) {
-      put_short(bi_buf);
-      bi_buf=0;
-      bi_valid=0;
-    }
-    else if (bi_valid >= 8) {
-      put_byte((byte)bi_buf);
-      bi_buf>>>=8;
-      bi_valid-=8;
-    }
-  }
-
-  // Flush the bit buffer and align the output on a byte boundary
-  void bi_windup(){
-    if (bi_valid > 8) {
-      put_short(bi_buf);
-    } else if (bi_valid > 0) {
-      put_byte((byte)bi_buf);
-    }
-    bi_buf = 0;
-    bi_valid = 0;
-  }
-
-  // Copy a stored block, storing first the length and its
-  // one's complement if requested.
-  void copy_block(int buf,         // the input data
-		  int len,         // its length
-		  boolean header   // true if block header must be written
-		  ){
-    int index=0;
-    bi_windup();      // align on byte boundary
-    last_eob_len = 8; // enough lookahead for inflate
-
-    if (header) {
-      put_short((short)len);   
-      put_short((short)~len);
-    }
-
-    //  while(len--!=0) {
-    //    put_byte(window[buf+index]);
-    //    index++;
-    //  }
-    put_byte(window, buf, len);
-  }
-
-  void flush_block_only(boolean eof){
-    _tr_flush_block(block_start>=0 ? block_start : -1,
-		    strstart-block_start,
-		    eof);
-    block_start=strstart;
-    strm.flush_pending();
-  }
-
-  // Copy without compression as much as possible from the input stream, return
-  // the current block state.
-  // This function does not insert new strings in the dictionary since
-  // uncompressible data is probably not useful. This function is used
-  // only for the level=0 compression option.
-  // NOTE: this function should be optimized to avoid extra copying from
-  // window to pending_buf.
-  int deflate_stored(int flush){
-    // Stored blocks are limited to 0xffff bytes, pending_buf is limited
-    // to pending_buf_size, and each stored block has a 5 byte header:
-
-    int max_block_size = 0xffff;
-    int max_start;
-
-    if(max_block_size > pending_buf_size - 5) {
-      max_block_size = pending_buf_size - 5;
-    }
-
-    // Copy as much as possible from input to output:
-    while(true){
-      // Fill the window as much as possible:
-      if(lookahead<=1){
-	fill_window();
-	if(lookahead==0 && flush==Z_NO_FLUSH) return NeedMore;
-	if(lookahead==0) break; // flush the current block
-      }
-
-      strstart+=lookahead;
-      lookahead=0;
-
-      // Emit a stored block if pending_buf will be full:
-      max_start=block_start+max_block_size;
-      if(strstart==0|| strstart>=max_start) {
-	// strstart == 0 is possible when wraparound on 16-bit machine
-	lookahead = (int)(strstart-max_start);
-	strstart = (int)max_start;
-      
-	flush_block_only(false);
-	if(strm.avail_out==0) return NeedMore;
-
-      }
-
-      // Flush if we may have to slide, otherwise block_start may become
-      // negative and the data will be gone:
-      if(strstart-block_start >= w_size-MIN_LOOKAHEAD) {
-	flush_block_only(false);
-	if(strm.avail_out==0) return NeedMore;
-      }
-    }
-
-    flush_block_only(flush == Z_FINISH);
-    if(strm.avail_out==0)
-      return (flush == Z_FINISH) ? FinishStarted : NeedMore;
-
-    return flush == Z_FINISH ? FinishDone : BlockDone;
-  }
-
-  // Send a stored block
-  void _tr_stored_block(int buf,        // input block
-			int stored_len, // length of input block
-			boolean eof     // true if this is the last block for a file
-			){
-    send_bits((STORED_BLOCK<<1)+(eof?1:0), 3);  // send block type
-    copy_block(buf, stored_len, true);          // with header
-  }
-
-  // Determine the best encoding for the current block: dynamic trees, static
-  // trees or store, and output the encoded block to the zip file.
-  void _tr_flush_block(int buf,        // input block, or NULL if too old
-		       int stored_len, // length of input block
-		       boolean eof     // true if this is the last block for a file
-		       ) {
-    int opt_lenb, static_lenb;// opt_len and static_len in bytes
-    int max_blindex = 0;      // index of last bit length code of non zero freq
-
-    // Build the Huffman trees unless a stored block is forced
-    if(level > 0) {
-      // Check if the file is ascii or binary
-      if(data_type == Z_UNKNOWN) set_data_type();
-
-      // Construct the literal and distance trees
-      l_desc.build_tree(this);
-
-      d_desc.build_tree(this);
-
-      // At this point, opt_len and static_len are the total bit lengths of
-      // the compressed block data, excluding the tree representations.
-
-      // Build the bit length tree for the above two trees, and get the index
-      // in bl_order of the last bit length code to send.
-      max_blindex=build_bl_tree();
-
-      // Determine the best encoding. Compute first the block length in bytes
-      opt_lenb=(opt_len+3+7)>>>3;
-      static_lenb=(static_len+3+7)>>>3;
-
-      if(static_lenb<=opt_lenb) opt_lenb=static_lenb;
-    }
-    else {
-      opt_lenb=static_lenb=stored_len+5; // force a stored block
-    }
-
-    if(stored_len+4<=opt_lenb && buf != -1){
-      // 4: two words for the lengths
-      // The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
-      // Otherwise we can't have processed more than WSIZE input bytes since
-      // the last block flush, because compression would have been
-      // successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
-      // transform a block into a stored block.
-      _tr_stored_block(buf, stored_len, eof);
-    }
-    else if(static_lenb == opt_lenb){
-      send_bits((STATIC_TREES<<1)+(eof?1:0), 3);
-      compress_block(StaticTree.static_ltree, StaticTree.static_dtree);
-    }
-    else{
-      send_bits((DYN_TREES<<1)+(eof?1:0), 3);
-      send_all_trees(l_desc.max_code+1, d_desc.max_code+1, max_blindex+1);
-      compress_block(dyn_ltree, dyn_dtree);
-    }
-
-    // The above check is made mod 2^32, for files larger than 512 MB
-    // and uLong implemented on 32 bits.
-
-    init_block();
-
-    if(eof){
-      bi_windup();
-    }
-  }
-
-  // Fill the window when the lookahead becomes insufficient.
-  // Updates strstart and lookahead.
-  //
-  // IN assertion: lookahead < MIN_LOOKAHEAD
-  // OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
-  //    At least one byte has been read, or avail_in == 0; reads are
-  //    performed for at least two bytes (required for the zip translate_eol
-  //    option -- not supported here).
-  void fill_window(){
-    int n, m;
-    int p;
-    int more;    // Amount of free space at the end of the window.
-
-    do{
-      more = (window_size-lookahead-strstart);
-
-      // Deal with !@#$% 64K limit:
-      if(more==0 && strstart==0 && lookahead==0){
-	more = w_size;
-      } 
-      else if(more==-1) {
-	// Very unlikely, but possible on 16 bit machine if strstart == 0
-	// and lookahead == 1 (input done one byte at time)
-	more--;
-
-	// If the window is almost full and there is insufficient lookahead,
-	// move the upper half to the lower one to make room in the upper half.
-      }
-      else if(strstart >= w_size+ w_size-MIN_LOOKAHEAD) {
-	System.arraycopy(window, w_size, window, 0, w_size);
-	match_start-=w_size;
-	strstart-=w_size; // we now have strstart >= MAX_DIST
-	block_start-=w_size;
-
-	// Slide the hash table (could be avoided with 32 bit values
-	// at the expense of memory usage). We slide even when level == 0
-	// to keep the hash table consistent if we switch back to level > 0
-	// later. (Using level 0 permanently is not an optimal usage of
-	// zlib, so we don't care about this pathological case.)
-
-	n = hash_size;
-	p=n;
-	do {
-	  m = (head[--p]&0xffff);
-	  head[p]=(m>=w_size ? (short)(m-w_size) : 0);
-	}
-	while (--n != 0);
-
-	n = w_size;
-	p = n;
-	do {
-	  m = (prev[--p]&0xffff);
-	  prev[p] = (m >= w_size ? (short)(m-w_size) : 0);
-	  // If n is not on any hash chain, prev[n] is garbage but
-	  // its value will never be used.
-	}
-	while (--n!=0);
-	more += w_size;
-      }
-
-      if (strm.avail_in == 0) return;
-
-      // If there was no sliding:
-      //    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
-      //    more == window_size - lookahead - strstart
-      // => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
-      // => more >= window_size - 2*WSIZE + 2
-      // In the BIG_MEM or MMAP case (not yet supported),
-      //   window_size == input_size + MIN_LOOKAHEAD  &&
-      //   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
-      // Otherwise, window_size == 2*WSIZE so more >= 2.
-      // If there was sliding, more >= WSIZE. So in all cases, more >= 2.
-
-      n = strm.read_buf(window, strstart + lookahead, more);
-      lookahead += n;
-
-      // Initialize the hash value now that we have some input:
-      if(lookahead >= MIN_MATCH) {
-	ins_h = window[strstart]&0xff;
-	ins_h=(((ins_h)<<hash_shift)^(window[strstart+1]&0xff))&hash_mask;
-      }
-      // If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
-      // but this is not important since only literal bytes will be emitted.
-    }
-    while (lookahead < MIN_LOOKAHEAD && strm.avail_in != 0);
-  }
-
-  // Compress as much as possible from the input stream, return the current
-  // block state.
-  // This function does not perform lazy evaluation of matches and inserts
-  // new strings in the dictionary only for unmatched strings or for short
-  // matches. It is used only for the fast compression options.
-  int deflate_fast(int flush){
-//    short hash_head = 0; // head of the hash chain
-    int hash_head = 0; // head of the hash chain
-    boolean bflush;      // set if current block must be flushed
-
-    while(true){
-      // Make sure that we always have enough lookahead, except
-      // at the end of the input file. We need MAX_MATCH bytes
-      // for the next match, plus MIN_MATCH bytes to insert the
-      // string following the next match.
-      if(lookahead < MIN_LOOKAHEAD){
-	fill_window();
-	if(lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH){
-	  return NeedMore;
-	}
-	if(lookahead == 0) break; // flush the current block
-      }
-
-      // Insert the string window[strstart .. strstart+2] in the
-      // dictionary, and set hash_head to the head of the hash chain:
-      if(lookahead >= MIN_MATCH){
-	ins_h=(((ins_h)<<hash_shift)^(window[(strstart)+(MIN_MATCH-1)]&0xff))&hash_mask;
-
-//	prev[strstart&w_mask]=hash_head=head[ins_h];
-        hash_head=(head[ins_h]&0xffff);
-	prev[strstart&w_mask]=head[ins_h];
-	head[ins_h]=(short)strstart;
-      }
-
-      // Find the longest match, discarding those <= prev_length.
-      // At this point we have always match_length < MIN_MATCH
-
-      if(hash_head!=0L && 
-	 ((strstart-hash_head)&0xffff) <= w_size-MIN_LOOKAHEAD
-	 ){
-	// To simplify the code, we prevent matches with the string
-	// of window index 0 (in particular we have to avoid a match
-	// of the string with itself at the start of the input file).
-	if(strategy != Z_HUFFMAN_ONLY){
-	  match_length=longest_match (hash_head);
-	}
-	// longest_match() sets match_start
-      }
-      if(match_length>=MIN_MATCH){
-	//        check_match(strstart, match_start, match_length);
-
-	bflush=_tr_tally(strstart-match_start, match_length-MIN_MATCH);
-
-	lookahead -= match_length;
-
-	// Insert new strings in the hash table only if the match length
-	// is not too large. This saves time but degrades compression.
-	if(match_length <= max_lazy_match &&
-	   lookahead >= MIN_MATCH) {
-	  match_length--; // string at strstart already in hash table
-	  do{
-	    strstart++;
-
-	    ins_h=((ins_h<<hash_shift)^(window[(strstart)+(MIN_MATCH-1)]&0xff))&hash_mask;
-//	    prev[strstart&w_mask]=hash_head=head[ins_h];
-	    hash_head=(head[ins_h]&0xffff);
-	    prev[strstart&w_mask]=head[ins_h];
-	    head[ins_h]=(short)strstart;
-
-	    // strstart never exceeds WSIZE-MAX_MATCH, so there are
-	    // always MIN_MATCH bytes ahead.
-	  }
-	  while (--match_length != 0);
-	  strstart++; 
-	}
-	else{
-	  strstart += match_length;
-	  match_length = 0;
-	  ins_h = window[strstart]&0xff;
-
-	  ins_h=(((ins_h)<<hash_shift)^(window[strstart+1]&0xff))&hash_mask;
-	  // If lookahead < MIN_MATCH, ins_h is garbage, but it does not
-	  // matter since it will be recomputed at next deflate call.
-	}
-      }
-      else {
-	// No match, output a literal byte
-
-	bflush=_tr_tally(0, window[strstart]&0xff);
-	lookahead--;
-	strstart++; 
-      }
-      if (bflush){
-
-	flush_block_only(false);
-	if(strm.avail_out==0) return NeedMore;
-      }
-    }
-
-    flush_block_only(flush == Z_FINISH);
-    if(strm.avail_out==0){
-      if(flush == Z_FINISH) return FinishStarted;
-      else return NeedMore;
-    }
-    return flush==Z_FINISH ? FinishDone : BlockDone;
-  }
-
-  // Same as above, but achieves better compression. We use a lazy
-  // evaluation for matches: a match is finally adopted only if there is
-  // no better match at the next window position.
-  int deflate_slow(int flush){
-//    short hash_head = 0;    // head of hash chain
-    int hash_head = 0;    // head of hash chain
-    boolean bflush;         // set if current block must be flushed
-
-    // Process the input block.
-    while(true){
-      // Make sure that we always have enough lookahead, except
-      // at the end of the input file. We need MAX_MATCH bytes
-      // for the next match, plus MIN_MATCH bytes to insert the
-      // string following the next match.
-
-      if (lookahead < MIN_LOOKAHEAD) {
-	fill_window();
-	if(lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
-	  return NeedMore;
-	}
-	if(lookahead == 0) break; // flush the current block
-      }
-
-      // Insert the string window[strstart .. strstart+2] in the
-      // dictionary, and set hash_head to the head of the hash chain:
-
-      if(lookahead >= MIN_MATCH) {
-	ins_h=(((ins_h)<<hash_shift)^(window[(strstart)+(MIN_MATCH-1)]&0xff)) & hash_mask;
-//	prev[strstart&w_mask]=hash_head=head[ins_h];
-	hash_head=(head[ins_h]&0xffff);
-	prev[strstart&w_mask]=head[ins_h];
-	head[ins_h]=(short)strstart;
-      }
-
-      // Find the longest match, discarding those <= prev_length.
-      prev_length = match_length; prev_match = match_start;
-      match_length = MIN_MATCH-1;
-
-      if (hash_head != 0 && prev_length < max_lazy_match &&
-	  ((strstart-hash_head)&0xffff) <= w_size-MIN_LOOKAHEAD
-	  ){
-	// To simplify the code, we prevent matches with the string
-	// of window index 0 (in particular we have to avoid a match
-	// of the string with itself at the start of the input file).
-
-	if(strategy != Z_HUFFMAN_ONLY) {
-	  match_length = longest_match(hash_head);
-	}
-	// longest_match() sets match_start
-
-	if (match_length <= 5 && (strategy == Z_FILTERED ||
-				  (match_length == MIN_MATCH &&
-				   strstart - match_start > 4096))) {
-
-	  // If prev_match is also MIN_MATCH, match_start is garbage
-	  // but we will ignore the current match anyway.
-	  match_length = MIN_MATCH-1;
-	}
-      }
-
-      // If there was a match at the previous step and the current
-      // match is not better, output the previous match:
-      if(prev_length >= MIN_MATCH && match_length <= prev_length) {
-	int max_insert = strstart + lookahead - MIN_MATCH;
-	// Do not insert strings in hash table beyond this.
-
-	//          check_match(strstart-1, prev_match, prev_length);
-
-	bflush=_tr_tally(strstart-1-prev_match, prev_length - MIN_MATCH);
-
-	// Insert in hash table all strings up to the end of the match.
-	// strstart-1 and strstart are already inserted. If there is not
-	// enough lookahead, the last two strings are not inserted in
-	// the hash table.
-	lookahead -= prev_length-1;
-	prev_length -= 2;
-	do{
-	  if(++strstart <= max_insert) {
-	    ins_h=(((ins_h)<<hash_shift)^(window[(strstart)+(MIN_MATCH-1)]&0xff))&hash_mask;
-	    //prev[strstart&w_mask]=hash_head=head[ins_h];
-	    hash_head=(head[ins_h]&0xffff);
-	    prev[strstart&w_mask]=head[ins_h];
-	    head[ins_h]=(short)strstart;
-	  }
-	}
-	while(--prev_length != 0);
-	match_available = 0;
-	match_length = MIN_MATCH-1;
-	strstart++;
-
-	if (bflush){
-	  flush_block_only(false);
-	  if(strm.avail_out==0) return NeedMore;
-	}
-      } else if (match_available!=0) {
-
-	// If there was no match at the previous position, output a
-	// single literal. If there was a match but the current match
-	// is longer, truncate the previous match to a single literal.
-
-	bflush=_tr_tally(0, window[strstart-1]&0xff);
-
-	if (bflush) {
-	  flush_block_only(false);
-	}
-	strstart++;
-	lookahead--;
-	if(strm.avail_out == 0) return NeedMore;
-      } else {
-	// There is no previous match to compare with, wait for
-	// the next step to decide.
-
-	match_available = 1;
-	strstart++;
-	lookahead--;
-      }
-    }
-
-    if(match_available!=0) {
-      bflush=_tr_tally(0, window[strstart-1]&0xff);
-      match_available = 0;
-    }
-    flush_block_only(flush == Z_FINISH);
-
-    if(strm.avail_out==0){
-      if(flush == Z_FINISH) return FinishStarted;
-      else return NeedMore;
-    }
-
-    return flush == Z_FINISH ? FinishDone : BlockDone;
-  }
-
-  int longest_match(int cur_match){
-    int chain_length = max_chain_length; // max hash chain length
-    int scan = strstart;                 // current string
-    int match;                           // matched string
-    int len;                             // length of current match
-    int best_len = prev_length;          // best match length so far
-    int limit = strstart>(w_size-MIN_LOOKAHEAD) ?
-      strstart-(w_size-MIN_LOOKAHEAD) : 0;
-    int nice_match=this.nice_match;
-
-    // Stop when cur_match becomes <= limit. To simplify the code,
-    // we prevent matches with the string of window index 0.
-
-    int wmask = w_mask;
-
-    int strend = strstart + MAX_MATCH;
-    byte scan_end1 = window[scan+best_len-1];
-    byte scan_end = window[scan+best_len];
-
-    // The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
-    // It is easy to get rid of this optimization if necessary.
-
-    // Do not waste too much time if we already have a good match:
-    if (prev_length >= good_match) {
-      chain_length >>= 2;
-    }
-
-    // Do not look for matches beyond the end of the input. This is necessary
-    // to make deflate deterministic.
-    if (nice_match > lookahead) nice_match = lookahead;
-
-    do {
-      match = cur_match;
-
-      // Skip to next match if the match length cannot increase
-      // or if the match length is less than 2:
-      if (window[match+best_len]   != scan_end  ||
-	  window[match+best_len-1] != scan_end1 ||
-	  window[match]       != window[scan]     ||
-	  window[++match]     != window[scan+1])      continue;
-
-      // The check at best_len-1 can be removed because it will be made
-      // again later. (This heuristic is not always a win.)
-      // It is not necessary to compare scan[2] and match[2] since they
-      // are always equal when the other bytes match, given that
-      // the hash keys are equal and that HASH_BITS >= 8.
-      scan += 2; match++;
-
-      // We check for insufficient lookahead only every 8th comparison;
-      // the 256th check will be made at strstart+258.
-      do {
-      } while (window[++scan] == window[++match] &&
-	       window[++scan] == window[++match] &&
-	       window[++scan] == window[++match] &&
-	       window[++scan] == window[++match] &&
-	       window[++scan] == window[++match] &&
-	       window[++scan] == window[++match] &&
-	       window[++scan] == window[++match] &&
-	       window[++scan] == window[++match] &&
-	       scan < strend);
-
-      len = MAX_MATCH - (int)(strend - scan);
-      scan = strend - MAX_MATCH;
-
-      if(len>best_len) {
-	match_start = cur_match;
-	best_len = len;
-	if (len >= nice_match) break;
-	scan_end1  = window[scan+best_len-1];
-	scan_end   = window[scan+best_len];
-      }
-
-    } while ((cur_match = (prev[cur_match & wmask]&0xffff)) > limit
-	     && --chain_length != 0);
-
-    if (best_len <= lookahead) return best_len;
-    return lookahead;
-  }
-    
-  int deflateInit(ZStream strm, int level, int bits){
-    return deflateInit2(strm, level, Z_DEFLATED, bits, DEF_MEM_LEVEL,
-			Z_DEFAULT_STRATEGY);
-  }
-  int deflateInit(ZStream strm, int level){
-    return deflateInit(strm, level, MAX_WBITS);
-  }
-  int deflateInit2(ZStream strm, int level, int method,  int windowBits,
-		   int memLevel, int strategy){
-    int noheader = 0;
-    //    byte[] my_version=ZLIB_VERSION;
-
-    //
-    //  if (version == null || version[0] != my_version[0]
-    //  || stream_size != sizeof(z_stream)) {
-    //  return Z_VERSION_ERROR;
-    //  }
-
-    strm.msg = null;
-
-    if (level == Z_DEFAULT_COMPRESSION) level = 6;
-
-    if (windowBits < 0) { // undocumented feature: suppress zlib header
-      noheader = 1;
-      windowBits = -windowBits;
-    }
-
-    if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || 
-	method != Z_DEFLATED ||
-	windowBits < 9 || windowBits > 15 || level < 0 || level > 9 ||
-        strategy < 0 || strategy > Z_HUFFMAN_ONLY) {
-      return Z_STREAM_ERROR;
-    }
-
-    strm.dstate = (Deflate)this;
-
-    this.noheader = noheader;
-    w_bits = windowBits;
-    w_size = 1 << w_bits;
-    w_mask = w_size - 1;
-
-    hash_bits = memLevel + 7;
-    hash_size = 1 << hash_bits;
-    hash_mask = hash_size - 1;
-    hash_shift = ((hash_bits+MIN_MATCH-1)/MIN_MATCH);
-
-    window = new byte[w_size*2];
-    prev = new short[w_size];
-    head = new short[hash_size];
-
-    lit_bufsize = 1 << (memLevel + 6); // 16K elements by default
-
-    // We overlay pending_buf and d_buf+l_buf. This works since the average
-    // output size for (length,distance) codes is <= 24 bits.
-    pending_buf = new byte[lit_bufsize*4];
-    pending_buf_size = lit_bufsize*4;
-
-    d_buf = lit_bufsize/2;
-    l_buf = (1+2)*lit_bufsize;
-
-    this.level = level;
-
-//System.out.println("level="+level);
-
-    this.strategy = strategy;
-    this.method = (byte)method;
-
-    return deflateReset(strm);
-  }
-
-  int deflateReset(ZStream strm){
-    strm.total_in = strm.total_out = 0;
-    strm.msg = null; //
-    strm.data_type = Z_UNKNOWN;
-
-    pending = 0;
-    pending_out = 0;
-
-    if(noheader < 0) {
-      noheader = 0; // was set to -1 by deflate(..., Z_FINISH);
-    }
-    status = (noheader!=0) ? BUSY_STATE : INIT_STATE;
-    strm.adler=strm._adler.adler32(0, null, 0, 0);
-
-    last_flush = Z_NO_FLUSH;
-
-    tr_init();
-    lm_init();
-    return Z_OK;
-  }
-
-  int deflateEnd(){
-    if(status!=INIT_STATE && status!=BUSY_STATE && status!=FINISH_STATE){
-      return Z_STREAM_ERROR;
-    }
-    // Deallocate in reverse order of allocations:
-    pending_buf=null;
-    head=null;
-    prev=null;
-    window=null;
-    // free
-    // dstate=null;
-    return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
-  }
-
-  int deflateParams(ZStream strm, int _level, int _strategy){
-    int err=Z_OK;
-
-    if(_level == Z_DEFAULT_COMPRESSION){
-      _level = 6;
-    }
-    if(_level < 0 || _level > 9 || 
-       _strategy < 0 || _strategy > Z_HUFFMAN_ONLY) {
-      return Z_STREAM_ERROR;
-    }
-
-    if(config_table[level].func!=config_table[_level].func &&
-       strm.total_in != 0) {
-      // Flush the last buffer:
-      err = strm.deflate(Z_PARTIAL_FLUSH);
-    }
-
-    if(level != _level) {
-      level = _level;
-      max_lazy_match   = config_table[level].max_lazy;
-      good_match       = config_table[level].good_length;
-      nice_match       = config_table[level].nice_length;
-      max_chain_length = config_table[level].max_chain;
-    }
-    strategy = _strategy;
-    return err;
-  }
-
-  int deflateSetDictionary (ZStream strm, byte[] dictionary, int dictLength){
-    int length = dictLength;
-    int index=0;
-
-    if(dictionary == null || status != INIT_STATE)
-      return Z_STREAM_ERROR;
-
-    strm.adler=strm._adler.adler32(strm.adler, dictionary, 0, dictLength);
-
-    if(length < MIN_MATCH) return Z_OK;
-    if(length > w_size-MIN_LOOKAHEAD){
-      length = w_size-MIN_LOOKAHEAD;
-      index=dictLength-length; // use the tail of the dictionary
-    }
-    System.arraycopy(dictionary, index, window, 0, length);
-    strstart = length;
-    block_start = length;
-
-    // Insert all strings in the hash table (except for the last two bytes).
-    // s->lookahead stays null, so s->ins_h will be recomputed at the next
-    // call of fill_window.
-
-    ins_h = window[0]&0xff;
-    ins_h=(((ins_h)<<hash_shift)^(window[1]&0xff))&hash_mask;
-
-    for(int n=0; n<=length-MIN_MATCH; n++){
-      ins_h=(((ins_h)<<hash_shift)^(window[(n)+(MIN_MATCH-1)]&0xff))&hash_mask;
-      prev[n&w_mask]=head[ins_h];
-      head[ins_h]=(short)n;
-    }
-    return Z_OK;
-  }
-
-  int deflate(ZStream strm, int flush){
-    int old_flush;
-
-    if(flush>Z_FINISH || flush<0){
-      return Z_STREAM_ERROR;
-    }
-
-    if(strm.next_out == null ||
-       (strm.next_in == null && strm.avail_in != 0) ||
-       (status == FINISH_STATE && flush != Z_FINISH)) {
-      strm.msg=z_errmsg[Z_NEED_DICT-(Z_STREAM_ERROR)];
-      return Z_STREAM_ERROR;
-    }
-    if(strm.avail_out == 0){
-      strm.msg=z_errmsg[Z_NEED_DICT-(Z_BUF_ERROR)];
-      return Z_BUF_ERROR;
-    }
-
-    this.strm = strm; // just in case
-    old_flush = last_flush;
-    last_flush = flush;
-
-    // Write the zlib header
-    if(status == INIT_STATE) {
-      int header = (Z_DEFLATED+((w_bits-8)<<4))<<8;
-      int level_flags=((level-1)&0xff)>>1;
-
-      if(level_flags>3) level_flags=3;
-      header |= (level_flags<<6);
-      if(strstart!=0) header |= PRESET_DICT;
-      header+=31-(header % 31);
-
-      status=BUSY_STATE;
-      putShortMSB(header);
-
-
-      // Save the adler32 of the preset dictionary:
-      if(strstart!=0){
-        putShortMSB((int)(strm.adler>>>16));
-        putShortMSB((int)(strm.adler&0xffff));
-      }
-      strm.adler=strm._adler.adler32(0, null, 0, 0);
-    }
-
-    // Flush as much pending output as possible
-    if(pending != 0) {
-      strm.flush_pending();
-      if(strm.avail_out == 0) {
-	//System.out.println("  avail_out==0");
-	// Since avail_out is 0, deflate will be called again with
-	// more output space, but possibly with both pending and
-	// avail_in equal to zero. There won't be anything to do,
-	// but this is not an error situation so make sure we
-	// return OK instead of BUF_ERROR at next call of deflate:
-	last_flush = -1;
-	return Z_OK;
-      }
-
-      // Make sure there is something to do and avoid duplicate consecutive
-      // flushes. For repeated and useless calls with Z_FINISH, we keep
-      // returning Z_STREAM_END instead of Z_BUFF_ERROR.
-    }
-    else if(strm.avail_in==0 && flush <= old_flush &&
-	    flush != Z_FINISH) {
-      strm.msg=z_errmsg[Z_NEED_DICT-(Z_BUF_ERROR)];
-      return Z_BUF_ERROR;
-    }
-
-    // User must not provide more input after the first FINISH:
-    if(status == FINISH_STATE && strm.avail_in != 0) {
-      strm.msg=z_errmsg[Z_NEED_DICT-(Z_BUF_ERROR)];
-      return Z_BUF_ERROR;
-    }
-
-    // Start a new block or continue the current one.
-    if(strm.avail_in!=0 || lookahead!=0 ||
-       (flush != Z_NO_FLUSH && status != FINISH_STATE)) {
-      int bstate=-1;
-      switch(config_table[level].func){
-      case STORED: 
-	bstate = deflate_stored(flush);
-	break;
-      case FAST: 
-	bstate = deflate_fast(flush);
-	break;
-      case SLOW: 
-	bstate = deflate_slow(flush);
-	break;
-      default:
-      }
-
-      if (bstate==FinishStarted || bstate==FinishDone) {
-	status = FINISH_STATE;
-      }
-      if (bstate==NeedMore || bstate==FinishStarted) {
-	if(strm.avail_out == 0) {
-	  last_flush = -1; // avoid BUF_ERROR next call, see above
-	}
-	return Z_OK;
-	// If flush != Z_NO_FLUSH && avail_out == 0, the next call
-	// of deflate should use the same flush parameter to make sure
-	// that the flush is complete. So we don't have to output an
-	// empty block here, this will be done at next call. This also
-	// ensures that for a very small output buffer, we emit at most
-	// one empty block.
-      }
-
-      if (bstate==BlockDone) {
-	if(flush == Z_PARTIAL_FLUSH) {
-	  _tr_align();
-	} 
-	else { // FULL_FLUSH or SYNC_FLUSH
-	  _tr_stored_block(0, 0, false);
-	  // For a full flush, this empty block will be recognized
-	  // as a special marker by inflate_sync().
-	  if(flush == Z_FULL_FLUSH) {
-	    //state.head[s.hash_size-1]=0;
-	    for(int i=0; i<hash_size/*-1*/; i++)  // forget history
-	      head[i]=0;
-	  }
-	}
-	strm.flush_pending();
-	if(strm.avail_out == 0) {
-	  last_flush = -1; // avoid BUF_ERROR at next call, see above
-	  return Z_OK;
-	}
-      }
-    }
-
-    if(flush!=Z_FINISH) return Z_OK;
-    if(noheader!=0) return Z_STREAM_END;
-
-    // Write the zlib trailer (adler32)
-    putShortMSB((int)(strm.adler>>>16));
-    putShortMSB((int)(strm.adler&0xffff));
-    strm.flush_pending();
-
-    // If avail_out is zero, the application will call deflate again
-    // to flush the rest.
-    noheader = -1; // write the trailer only once!
-    return pending != 0 ? Z_OK : Z_STREAM_END;
-  }
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/InfBlocks.java b/app/src/main/java/com/jcraft/jzlib/InfBlocks.java
deleted file mode 100644
index f6997fc..0000000
--- a/app/src/main/java/com/jcraft/jzlib/InfBlocks.java
+++ /dev/null
@@ -1,614 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-final class InfBlocks{
-  static final private int MANY=1440;
-
-  // And'ing with mask[n] masks the lower n bits
-  static final private int[] inflate_mask = {
-    0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000f,
-    0x0000001f, 0x0000003f, 0x0000007f, 0x000000ff, 0x000001ff,
-    0x000003ff, 0x000007ff, 0x00000fff, 0x00001fff, 0x00003fff,
-    0x00007fff, 0x0000ffff
-  };
-
-  // Table for deflate from PKZIP's appnote.txt.
-  static final int[] border = { // Order of the bit length code lengths
-    16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15
-  };
-
-  static final private int Z_OK=0;
-  static final private int Z_STREAM_END=1;
-  static final private int Z_NEED_DICT=2;
-  static final private int Z_ERRNO=-1;
-  static final private int Z_STREAM_ERROR=-2;
-  static final private int Z_DATA_ERROR=-3;
-  static final private int Z_MEM_ERROR=-4;
-  static final private int Z_BUF_ERROR=-5;
-  static final private int Z_VERSION_ERROR=-6;
-
-  static final private int TYPE=0;  // get type bits (3, including end bit)
-  static final private int LENS=1;  // get lengths for stored
-  static final private int STORED=2;// processing stored block
-  static final private int TABLE=3; // get table lengths
-  static final private int BTREE=4; // get bit lengths tree for a dynamic block
-  static final private int DTREE=5; // get length, distance trees for a dynamic block
-  static final private int CODES=6; // processing fixed or dynamic block
-  static final private int DRY=7;   // output remaining window bytes
-  static final private int DONE=8;  // finished last block, done
-  static final private int BAD=9;   // ot a data error--stuck here
-
-  int mode;            // current inflate_block mode 
-
-  int left;            // if STORED, bytes left to copy 
-
-  int table;           // table lengths (14 bits) 
-  int index;           // index into blens (or border) 
-  int[] blens;         // bit lengths of codes 
-  int[] bb=new int[1]; // bit length tree depth 
-  int[] tb=new int[1]; // bit length decoding tree 
-
-  InfCodes codes=new InfCodes();      // if CODES, current state 
-
-  int last;            // true if this block is the last block 
-
-  // mode independent information 
-  int bitk;            // bits in bit buffer 
-  int bitb;            // bit buffer 
-  int[] hufts;         // single malloc for tree space 
-  byte[] window;       // sliding window 
-  int end;             // one byte after sliding window 
-  int read;            // window read pointer 
-  int write;           // window write pointer 
-  Object checkfn;      // check function 
-  long check;          // check on output 
-
-  InfTree inftree=new InfTree();
-
-  InfBlocks(ZStream z, Object checkfn, int w){
-    hufts=new int[MANY*3];
-    window=new byte[w];
-    end=w;
-    this.checkfn = checkfn;
-    mode = TYPE;
-    reset(z, null);
-  }
-
-  void reset(ZStream z, long[] c){
-    if(c!=null) c[0]=check;
-    if(mode==BTREE || mode==DTREE){
-    }
-    if(mode==CODES){
-      codes.free(z);
-    }
-    mode=TYPE;
-    bitk=0;
-    bitb=0;
-    read=write=0;
-
-    if(checkfn != null)
-      z.adler=check=z._adler.adler32(0L, null, 0, 0);
-  }
-
-  int proc(ZStream z, int r){
-    int t;              // temporary storage
-    int b;              // bit buffer
-    int k;              // bits in bit buffer
-    int p;              // input data pointer
-    int n;              // bytes available there
-    int q;              // output window write pointer
-    int m;              // bytes to end of window or read pointer
-
-    // copy input/output information to locals (UPDATE macro restores)
-    {p=z.next_in_index;n=z.avail_in;b=bitb;k=bitk;}
-    {q=write;m=(int)(q<read?read-q-1:end-q);}
-
-    // process input based on current state
-    while(true){
-      switch (mode){
-      case TYPE:
-
-	while(k<(3)){
-	  if(n!=0){
-	    r=Z_OK;
-	  }
-	  else{
-	    bitb=b; bitk=k; 
-	    z.avail_in=n;
-	    z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	    write=q;
-	    return inflate_flush(z,r);
-	  };
-	  n--;
-	  b|=(z.next_in[p++]&0xff)<<k;
-	  k+=8;
-	}
-	t = (int)(b & 7);
-	last = t & 1;
-
-	switch (t >>> 1){
-        case 0:                         // stored 
-          {b>>>=(3);k-=(3);}
-          t = k & 7;                    // go to byte boundary
-
-          {b>>>=(t);k-=(t);}
-          mode = LENS;                  // get length of stored block
-          break;
-        case 1:                         // fixed
-          {
-            int[] bl=new int[1];
-	    int[] bd=new int[1];
-            int[][] tl=new int[1][];
-	    int[][] td=new int[1][];
-
-	    InfTree.inflate_trees_fixed(bl, bd, tl, td, z);
-            codes.init(bl[0], bd[0], tl[0], 0, td[0], 0, z);
-          }
-
-          {b>>>=(3);k-=(3);}
-
-          mode = CODES;
-          break;
-        case 2:                         // dynamic
-
-          {b>>>=(3);k-=(3);}
-
-          mode = TABLE;
-          break;
-        case 3:                         // illegal
-
-          {b>>>=(3);k-=(3);}
-          mode = BAD;
-          z.msg = "invalid block type";
-          r = Z_DATA_ERROR;
-
-	  bitb=b; bitk=k; 
-	  z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	  write=q;
-	  return inflate_flush(z,r);
-	}
-	break;
-      case LENS:
-
-	while(k<(32)){
-	  if(n!=0){
-	    r=Z_OK;
-	  }
-	  else{
-	    bitb=b; bitk=k; 
-	    z.avail_in=n;
-	    z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	    write=q;
-	    return inflate_flush(z,r);
-	  };
-	  n--;
-	  b|=(z.next_in[p++]&0xff)<<k;
-	  k+=8;
-	}
-
-	if ((((~b) >>> 16) & 0xffff) != (b & 0xffff)){
-	  mode = BAD;
-	  z.msg = "invalid stored block lengths";
-	  r = Z_DATA_ERROR;
-
-	  bitb=b; bitk=k; 
-	  z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	  write=q;
-	  return inflate_flush(z,r);
-	}
-	left = (b & 0xffff);
-	b = k = 0;                       // dump bits
-	mode = left!=0 ? STORED : (last!=0 ? DRY : TYPE);
-	break;
-      case STORED:
-	if (n == 0){
-	  bitb=b; bitk=k; 
-	  z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	  write=q;
-	  return inflate_flush(z,r);
-	}
-
-	if(m==0){
-	  if(q==end&&read!=0){
-	    q=0; m=(int)(q<read?read-q-1:end-q);
-	  }
-	  if(m==0){
-	    write=q; 
-	    r=inflate_flush(z,r);
-	    q=write;m=(int)(q<read?read-q-1:end-q);
-	    if(q==end&&read!=0){
-	      q=0; m=(int)(q<read?read-q-1:end-q);
-	    }
-	    if(m==0){
-	      bitb=b; bitk=k; 
-	      z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	      write=q;
-	      return inflate_flush(z,r);
-	    }
-	  }
-	}
-	r=Z_OK;
-
-	t = left;
-	if(t>n) t = n;
-	if(t>m) t = m;
-	System.arraycopy(z.next_in, p, window, q, t);
-	p += t;  n -= t;
-	q += t;  m -= t;
-	if ((left -= t) != 0)
-	  break;
-	mode = last!=0 ? DRY : TYPE;
-	break;
-      case TABLE:
-
-	while(k<(14)){
-	  if(n!=0){
-	    r=Z_OK;
-	  }
-	  else{
-	    bitb=b; bitk=k; 
-	    z.avail_in=n;
-	    z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	    write=q;
-	    return inflate_flush(z,r);
-	  };
-	  n--;
-	  b|=(z.next_in[p++]&0xff)<<k;
-	  k+=8;
-	}
-
-	table = t = (b & 0x3fff);
-	if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29)
-	  {
-	    mode = BAD;
-	    z.msg = "too many length or distance symbols";
-	    r = Z_DATA_ERROR;
-
-	    bitb=b; bitk=k; 
-	    z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	    write=q;
-	    return inflate_flush(z,r);
-	  }
-	t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
-	if(blens==null || blens.length<t){
-	  blens=new int[t];
-	}
-	else{
-	  for(int i=0; i<t; i++){blens[i]=0;}
-	}
-
-	{b>>>=(14);k-=(14);}
-
-	index = 0;
-	mode = BTREE;
-      case BTREE:
-	while (index < 4 + (table >>> 10)){
-	  while(k<(3)){
-	    if(n!=0){
-	      r=Z_OK;
-	    }
-	    else{
-	      bitb=b; bitk=k; 
-	      z.avail_in=n;
-	      z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	      write=q;
-	      return inflate_flush(z,r);
-	    };
-	    n--;
-	    b|=(z.next_in[p++]&0xff)<<k;
-	    k+=8;
-	  }
-
-	  blens[border[index++]] = b&7;
-
-	  {b>>>=(3);k-=(3);}
-	}
-
-	while(index < 19){
-	  blens[border[index++]] = 0;
-	}
-
-	bb[0] = 7;
-	t = inftree.inflate_trees_bits(blens, bb, tb, hufts, z);
-	if (t != Z_OK){
-	  r = t;
-	  if (r == Z_DATA_ERROR){
-	    blens=null;
-	    mode = BAD;
-	  }
-
-	  bitb=b; bitk=k; 
-	  z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	  write=q;
-	  return inflate_flush(z,r);
-	}
-
-	index = 0;
-	mode = DTREE;
-      case DTREE:
-	while (true){
-	  t = table;
-	  if(!(index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f))){
-	    break;
-	  }
-
-	  int[] h;
-	  int i, j, c;
-
-	  t = bb[0];
-
-	  while(k<(t)){
-	    if(n!=0){
-	      r=Z_OK;
-	    }
-	    else{
-	      bitb=b; bitk=k; 
-	      z.avail_in=n;
-	      z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	      write=q;
-	      return inflate_flush(z,r);
-	    };
-	    n--;
-	    b|=(z.next_in[p++]&0xff)<<k;
-	    k+=8;
-	  }
-
-	  if(tb[0]==-1){
-            //System.err.println("null...");
-	  }
-
-	  t=hufts[(tb[0]+(b&inflate_mask[t]))*3+1];
-	  c=hufts[(tb[0]+(b&inflate_mask[t]))*3+2];
-
-	  if (c < 16){
-	    b>>>=(t);k-=(t);
-	    blens[index++] = c;
-	  }
-	  else { // c == 16..18
-	    i = c == 18 ? 7 : c - 14;
-	    j = c == 18 ? 11 : 3;
-
-	    while(k<(t+i)){
-	      if(n!=0){
-		r=Z_OK;
-	      }
-	      else{
-		bitb=b; bitk=k; 
-		z.avail_in=n;
-		z.total_in+=p-z.next_in_index;z.next_in_index=p;
-		write=q;
-		return inflate_flush(z,r);
-	      };
-	      n--;
-	      b|=(z.next_in[p++]&0xff)<<k;
-	      k+=8;
-	    }
-
-	    b>>>=(t);k-=(t);
-
-	    j += (b & inflate_mask[i]);
-
-	    b>>>=(i);k-=(i);
-
-	    i = index;
-	    t = table;
-	    if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) ||
-		(c == 16 && i < 1)){
-	      blens=null;
-	      mode = BAD;
-	      z.msg = "invalid bit length repeat";
-	      r = Z_DATA_ERROR;
-
-	      bitb=b; bitk=k; 
-	      z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	      write=q;
-	      return inflate_flush(z,r);
-	    }
-
-	    c = c == 16 ? blens[i-1] : 0;
-	    do{
-	      blens[i++] = c;
-	    }
-	    while (--j!=0);
-	    index = i;
-	  }
-	}
-
-	tb[0]=-1;
-	{
-	  int[] bl=new int[1];
-	  int[] bd=new int[1];
-	  int[] tl=new int[1];
-	  int[] td=new int[1];
-	  bl[0] = 9;         // must be <= 9 for lookahead assumptions
-	  bd[0] = 6;         // must be <= 9 for lookahead assumptions
-
-	  t = table;
-	  t = inftree.inflate_trees_dynamic(257 + (t & 0x1f), 
-					    1 + ((t >> 5) & 0x1f),
-					    blens, bl, bd, tl, td, hufts, z);
-
-	  if (t != Z_OK){
-	    if (t == Z_DATA_ERROR){
-	      blens=null;
-	      mode = BAD;
-	    }
-	    r = t;
-
-	    bitb=b; bitk=k; 
-	    z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	    write=q;
-	    return inflate_flush(z,r);
-	  }
-	  codes.init(bl[0], bd[0], hufts, tl[0], hufts, td[0], z);
-	}
-	mode = CODES;
-      case CODES:
-	bitb=b; bitk=k;
-	z.avail_in=n; z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	write=q;
-
-	if ((r = codes.proc(this, z, r)) != Z_STREAM_END){
-	  return inflate_flush(z, r);
-	}
-	r = Z_OK;
-	codes.free(z);
-
-	p=z.next_in_index; n=z.avail_in;b=bitb;k=bitk;
-	q=write;m=(int)(q<read?read-q-1:end-q);
-
-	if (last==0){
-	  mode = TYPE;
-	  break;
-	}
-	mode = DRY;
-      case DRY:
-	write=q; 
-	r=inflate_flush(z, r); 
-	q=write; m=(int)(q<read?read-q-1:end-q);
-	if (read != write){
-	  bitb=b; bitk=k; 
-	  z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	  write=q;
-	  return inflate_flush(z, r);
-	}
-	mode = DONE;
-      case DONE:
-	r = Z_STREAM_END;
-
-	bitb=b; bitk=k; 
-	z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	write=q;
-	return inflate_flush(z, r);
-      case BAD:
-	r = Z_DATA_ERROR;
-
-	bitb=b; bitk=k; 
-	z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	write=q;
-	return inflate_flush(z, r);
-
-      default:
-	r = Z_STREAM_ERROR;
-
-	bitb=b; bitk=k; 
-	z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	write=q;
-	return inflate_flush(z, r);
-      }
-    }
-  }
-
-  void free(ZStream z){
-    reset(z, null);
-    window=null;
-    hufts=null;
-    //ZFREE(z, s);
-  }
-
-  void set_dictionary(byte[] d, int start, int n){
-    System.arraycopy(d, start, window, 0, n);
-    read = write = n;
-  }
-
-  // Returns true if inflate is currently at the end of a block generated
-  // by Z_SYNC_FLUSH or Z_FULL_FLUSH. 
-  int sync_point(){
-    return mode == LENS ? 1 : 0;
-  }
-
-  // copy as much as possible from the sliding window to the output area
-  int inflate_flush(ZStream z, int r){
-    int n;
-    int p;
-    int q;
-
-    // local copies of source and destination pointers
-    p = z.next_out_index;
-    q = read;
-
-    // compute number of bytes to copy as far as end of window
-    n = (int)((q <= write ? write : end) - q);
-    if (n > z.avail_out) n = z.avail_out;
-    if (n!=0 && r == Z_BUF_ERROR) r = Z_OK;
-
-    // update counters
-    z.avail_out -= n;
-    z.total_out += n;
-
-    // update check information
-    if(checkfn != null)
-      z.adler=check=z._adler.adler32(check, window, q, n);
-
-    // copy as far as end of window
-    System.arraycopy(window, q, z.next_out, p, n);
-    p += n;
-    q += n;
-
-    // see if more to copy at beginning of window
-    if (q == end){
-      // wrap pointers
-      q = 0;
-      if (write == end)
-        write = 0;
-
-      // compute bytes to copy
-      n = write - q;
-      if (n > z.avail_out) n = z.avail_out;
-      if (n!=0 && r == Z_BUF_ERROR) r = Z_OK;
-
-      // update counters
-      z.avail_out -= n;
-      z.total_out += n;
-
-      // update check information
-      if(checkfn != null)
-	z.adler=check=z._adler.adler32(check, window, q, n);
-
-      // copy
-      System.arraycopy(window, q, z.next_out, p, n);
-      p += n;
-      q += n;
-    }
-
-    // update pointers
-    z.next_out_index = p;
-    read = q;
-
-    // done
-    return r;
-  }
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/InfCodes.java b/app/src/main/java/com/jcraft/jzlib/InfCodes.java
deleted file mode 100644
index c768fb1..0000000
--- a/app/src/main/java/com/jcraft/jzlib/InfCodes.java
+++ /dev/null
@@ -1,605 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-final class InfCodes{
-
-  static final private int[] inflate_mask = {
-    0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000f,
-    0x0000001f, 0x0000003f, 0x0000007f, 0x000000ff, 0x000001ff,
-    0x000003ff, 0x000007ff, 0x00000fff, 0x00001fff, 0x00003fff,
-    0x00007fff, 0x0000ffff
-  };
-
-  static final private int Z_OK=0;
-  static final private int Z_STREAM_END=1;
-  static final private int Z_NEED_DICT=2;
-  static final private int Z_ERRNO=-1;
-  static final private int Z_STREAM_ERROR=-2;
-  static final private int Z_DATA_ERROR=-3;
-  static final private int Z_MEM_ERROR=-4;
-  static final private int Z_BUF_ERROR=-5;
-  static final private int Z_VERSION_ERROR=-6;
-
-  // waiting for "i:"=input,
-  //             "o:"=output,
-  //             "x:"=nothing
-  static final private int START=0;  // x: set up for LEN
-  static final private int LEN=1;    // i: get length/literal/eob next
-  static final private int LENEXT=2; // i: getting length extra (have base)
-  static final private int DIST=3;   // i: get distance next
-  static final private int DISTEXT=4;// i: getting distance extra
-  static final private int COPY=5;   // o: copying bytes in window, waiting for space
-  static final private int LIT=6;    // o: got literal, waiting for output space
-  static final private int WASH=7;   // o: got eob, possibly still output waiting
-  static final private int END=8;    // x: got eob and all data flushed
-  static final private int BADCODE=9;// x: got error
-
-  int mode;      // current inflate_codes mode
-
-  // mode dependent information
-  int len;
-
-  int[] tree; // pointer into tree
-  int tree_index=0;
-  int need;   // bits needed
-
-  int lit;
-
-  // if EXT or COPY, where and how much
-  int get;              // bits to get for extra
-  int dist;             // distance back to copy from
-
-  byte lbits;           // ltree bits decoded per branch
-  byte dbits;           // dtree bits decoder per branch
-  int[] ltree;          // literal/length/eob tree
-  int ltree_index;      // literal/length/eob tree
-  int[] dtree;          // distance tree
-  int dtree_index;      // distance tree
-
-  InfCodes(){
-  }
-  void init(int bl, int bd,
-	   int[] tl, int tl_index,
-	   int[] td, int td_index, ZStream z){
-    mode=START;
-    lbits=(byte)bl;
-    dbits=(byte)bd;
-    ltree=tl;
-    ltree_index=tl_index;
-    dtree = td;
-    dtree_index=td_index;
-    tree=null;
-  }
-
-  int proc(InfBlocks s, ZStream z, int r){ 
-    int j;              // temporary storage
-    int[] t;            // temporary pointer
-    int tindex;         // temporary pointer
-    int e;              // extra bits or operation
-    int b=0;            // bit buffer
-    int k=0;            // bits in bit buffer
-    int p=0;            // input data pointer
-    int n;              // bytes available there
-    int q;              // output window write pointer
-    int m;              // bytes to end of window or read pointer
-    int f;              // pointer to copy strings from
-
-    // copy input/output information to locals (UPDATE macro restores)
-    p=z.next_in_index;n=z.avail_in;b=s.bitb;k=s.bitk;
-    q=s.write;m=q<s.read?s.read-q-1:s.end-q;
-
-    // process input and output based on current state
-    while (true){
-      switch (mode){
-	// waiting for "i:"=input, "o:"=output, "x:"=nothing
-      case START:         // x: set up for LEN
-	if (m >= 258 && n >= 10){
-
-	  s.bitb=b;s.bitk=k;
-	  z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	  s.write=q;
-	  r = inflate_fast(lbits, dbits, 
-			   ltree, ltree_index, 
-			   dtree, dtree_index,
-			   s, z);
-
-	  p=z.next_in_index;n=z.avail_in;b=s.bitb;k=s.bitk;
-	  q=s.write;m=q<s.read?s.read-q-1:s.end-q;
-
-	  if (r != Z_OK){
-	    mode = r == Z_STREAM_END ? WASH : BADCODE;
-	    break;
-	  }
-	}
-	need = lbits;
-	tree = ltree;
-	tree_index=ltree_index;
-
-	mode = LEN;
-      case LEN:           // i: get length/literal/eob next
-	j = need;
-
-	while(k<(j)){
-	  if(n!=0)r=Z_OK;
-	  else{
-
-	    s.bitb=b;s.bitk=k;
-	    z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	    s.write=q;
-	    return s.inflate_flush(z,r);
-	  }
-	  n--;
-	  b|=(z.next_in[p++]&0xff)<<k;
-	  k+=8;
-	}
-
-	tindex=(tree_index+(b&inflate_mask[j]))*3;
-
-	b>>>=(tree[tindex+1]);
-	k-=(tree[tindex+1]);
-
-	e=tree[tindex];
-
-	if(e == 0){               // literal
-	  lit = tree[tindex+2];
-	  mode = LIT;
-	  break;
-	}
-	if((e & 16)!=0 ){          // length
-	  get = e & 15;
-	  len = tree[tindex+2];
-	  mode = LENEXT;
-	  break;
-	}
-	if ((e & 64) == 0){        // next table
-	  need = e;
-	  tree_index = tindex/3+tree[tindex+2];
-	  break;
-	}
-	if ((e & 32)!=0){               // end of block
-	  mode = WASH;
-	  break;
-	}
-	mode = BADCODE;        // invalid code
-	z.msg = "invalid literal/length code";
-	r = Z_DATA_ERROR;
-
-	s.bitb=b;s.bitk=k;
-	z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	s.write=q;
-	return s.inflate_flush(z,r);
-
-      case LENEXT:        // i: getting length extra (have base)
-	j = get;
-
-	while(k<(j)){
-	  if(n!=0)r=Z_OK;
-	  else{
-
-	    s.bitb=b;s.bitk=k;
-	    z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	    s.write=q;
-	    return s.inflate_flush(z,r);
-	  }
-	  n--; b|=(z.next_in[p++]&0xff)<<k;
-	  k+=8;
-	}
-
-	len += (b & inflate_mask[j]);
-
-	b>>=j;
-	k-=j;
-
-	need = dbits;
-	tree = dtree;
-	tree_index=dtree_index;
-	mode = DIST;
-      case DIST:          // i: get distance next
-	j = need;
-
-	while(k<(j)){
-	  if(n!=0)r=Z_OK;
-	  else{
-
-	    s.bitb=b;s.bitk=k;
-	    z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	    s.write=q;
-	    return s.inflate_flush(z,r);
-	  }
-	  n--; b|=(z.next_in[p++]&0xff)<<k;
-	  k+=8;
-	}
-
-	tindex=(tree_index+(b & inflate_mask[j]))*3;
-
-	b>>=tree[tindex+1];
-	k-=tree[tindex+1];
-
-	e = (tree[tindex]);
-	if((e & 16)!=0){               // distance
-	  get = e & 15;
-	  dist = tree[tindex+2];
-	  mode = DISTEXT;
-	  break;
-	}
-	if ((e & 64) == 0){        // next table
-	  need = e;
-	  tree_index = tindex/3 + tree[tindex+2];
-	  break;
-	}
-	mode = BADCODE;        // invalid code
-	z.msg = "invalid distance code";
-	r = Z_DATA_ERROR;
-
-	s.bitb=b;s.bitk=k;
-	z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	s.write=q;
-	return s.inflate_flush(z,r);
-
-      case DISTEXT:       // i: getting distance extra
-	j = get;
-
-	while(k<(j)){
-	  if(n!=0)r=Z_OK;
-	  else{
-
-	    s.bitb=b;s.bitk=k;
-	    z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	    s.write=q;
-	    return s.inflate_flush(z,r);
-	  }
-	  n--; b|=(z.next_in[p++]&0xff)<<k;
-	  k+=8;
-	}
-
-	dist += (b & inflate_mask[j]);
-
-	b>>=j;
-	k-=j;
-
-	mode = COPY;
-      case COPY:          // o: copying bytes in window, waiting for space
-        f = q - dist;
-        while(f < 0){     // modulo window size-"while" instead
-          f += s.end;     // of "if" handles invalid distances
-	}
-	while (len!=0){
-
-	  if(m==0){
-	    if(q==s.end&&s.read!=0){q=0;m=q<s.read?s.read-q-1:s.end-q;}
-	    if(m==0){
-	      s.write=q; r=s.inflate_flush(z,r);
-	      q=s.write;m=q<s.read?s.read-q-1:s.end-q;
-
-	      if(q==s.end&&s.read!=0){q=0;m=q<s.read?s.read-q-1:s.end-q;}
-
-	      if(m==0){
-		s.bitb=b;s.bitk=k;
-		z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-		s.write=q;
-		return s.inflate_flush(z,r);
-	      }  
-	    }
-	  }
-
-	  s.window[q++]=s.window[f++]; m--;
-
-	  if (f == s.end)
-            f = 0;
-	  len--;
-	}
-	mode = START;
-	break;
-      case LIT:           // o: got literal, waiting for output space
-	if(m==0){
-	  if(q==s.end&&s.read!=0){q=0;m=q<s.read?s.read-q-1:s.end-q;}
-	  if(m==0){
-	    s.write=q; r=s.inflate_flush(z,r);
-	    q=s.write;m=q<s.read?s.read-q-1:s.end-q;
-
-	    if(q==s.end&&s.read!=0){q=0;m=q<s.read?s.read-q-1:s.end-q;}
-	    if(m==0){
-	      s.bitb=b;s.bitk=k;
-	      z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	      s.write=q;
-	      return s.inflate_flush(z,r);
-	    }
-	  }
-	}
-	r=Z_OK;
-
-	s.window[q++]=(byte)lit; m--;
-
-	mode = START;
-	break;
-      case WASH:           // o: got eob, possibly more output
-	if (k > 7){        // return unused byte, if any
-	  k -= 8;
-	  n++;
-	  p--;             // can always return one
-	}
-
-	s.write=q; r=s.inflate_flush(z,r);
-	q=s.write;m=q<s.read?s.read-q-1:s.end-q;
-
-	if (s.read != s.write){
-	  s.bitb=b;s.bitk=k;
-	  z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	  s.write=q;
-	  return s.inflate_flush(z,r);
-	}
-	mode = END;
-      case END:
-	r = Z_STREAM_END;
-	s.bitb=b;s.bitk=k;
-	z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	s.write=q;
-	return s.inflate_flush(z,r);
-
-      case BADCODE:       // x: got error
-
-	r = Z_DATA_ERROR;
-
-	s.bitb=b;s.bitk=k;
-	z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	s.write=q;
-	return s.inflate_flush(z,r);
-
-      default:
-	r = Z_STREAM_ERROR;
-
-	s.bitb=b;s.bitk=k;
-	z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	s.write=q;
-	return s.inflate_flush(z,r);
-      }
-    }
-  }
-
-  void free(ZStream z){
-    //  ZFREE(z, c);
-  }
-
-  // Called with number of bytes left to write in window at least 258
-  // (the maximum string length) and number of input bytes available
-  // at least ten.  The ten bytes are six bytes for the longest length/
-  // distance pair plus four bytes for overloading the bit buffer.
-
-  int inflate_fast(int bl, int bd, 
-		   int[] tl, int tl_index,
-		   int[] td, int td_index,
-		   InfBlocks s, ZStream z){
-    int t;                // temporary pointer
-    int[] tp;             // temporary pointer
-    int tp_index;         // temporary pointer
-    int e;                // extra bits or operation
-    int b;                // bit buffer
-    int k;                // bits in bit buffer
-    int p;                // input data pointer
-    int n;                // bytes available there
-    int q;                // output window write pointer
-    int m;                // bytes to end of window or read pointer
-    int ml;               // mask for literal/length tree
-    int md;               // mask for distance tree
-    int c;                // bytes to copy
-    int d;                // distance back to copy from
-    int r;                // copy source pointer
-
-    int tp_index_t_3;     // (tp_index+t)*3
-
-    // load input, output, bit values
-    p=z.next_in_index;n=z.avail_in;b=s.bitb;k=s.bitk;
-    q=s.write;m=q<s.read?s.read-q-1:s.end-q;
-
-    // initialize masks
-    ml = inflate_mask[bl];
-    md = inflate_mask[bd];
-
-    // do until not enough input or output space for fast loop
-    do {                          // assume called with m >= 258 && n >= 10
-      // get literal/length code
-      while(k<(20)){              // max bits for literal/length code
-	n--;
-	b|=(z.next_in[p++]&0xff)<<k;k+=8;
-      }
-
-      t= b&ml;
-      tp=tl; 
-      tp_index=tl_index;
-      tp_index_t_3=(tp_index+t)*3;
-      if ((e = tp[tp_index_t_3]) == 0){
-	b>>=(tp[tp_index_t_3+1]); k-=(tp[tp_index_t_3+1]);
-
-	s.window[q++] = (byte)tp[tp_index_t_3+2];
-	m--;
-	continue;
-      }
-      do {
-
-	b>>=(tp[tp_index_t_3+1]); k-=(tp[tp_index_t_3+1]);
-
-	if((e&16)!=0){
-	  e &= 15;
-	  c = tp[tp_index_t_3+2] + ((int)b & inflate_mask[e]);
-
-	  b>>=e; k-=e;
-
-	  // decode distance base of block to copy
-	  while(k<(15)){           // max bits for distance code
-	    n--;
-	    b|=(z.next_in[p++]&0xff)<<k;k+=8;
-	  }
-
-	  t= b&md;
-	  tp=td;
-	  tp_index=td_index;
-          tp_index_t_3=(tp_index+t)*3;
-	  e = tp[tp_index_t_3];
-
-	  do {
-
-	    b>>=(tp[tp_index_t_3+1]); k-=(tp[tp_index_t_3+1]);
-
-	    if((e&16)!=0){
-	      // get extra bits to add to distance base
-	      e &= 15;
-	      while(k<(e)){         // get extra bits (up to 13)
-		n--;
-		b|=(z.next_in[p++]&0xff)<<k;k+=8;
-	      }
-
-	      d = tp[tp_index_t_3+2] + (b&inflate_mask[e]);
-
-	      b>>=(e); k-=(e);
-
-	      // do the copy
-	      m -= c;
-	      if (q >= d){                // offset before dest
-		//  just copy
-		r=q-d;
-		if(q-r>0 && 2>(q-r)){           
-		  s.window[q++]=s.window[r++]; // minimum count is three,
-		  s.window[q++]=s.window[r++]; // so unroll loop a little
-		  c-=2;
-		}
-		else{
-		  System.arraycopy(s.window, r, s.window, q, 2);
-		  q+=2; r+=2; c-=2;
-		}
-	      }
-	      else{                  // else offset after destination
-                r=q-d;
-                do{
-                  r+=s.end;          // force pointer in window
-                }while(r<0);         // covers invalid distances
-		e=s.end-r;
-		if(c>e){             // if source crosses,
-		  c-=e;              // wrapped copy
-		  if(q-r>0 && e>(q-r)){           
-		    do{s.window[q++] = s.window[r++];}
-		    while(--e!=0);
-		  }
-		  else{
-		    System.arraycopy(s.window, r, s.window, q, e);
-		    q+=e; r+=e; e=0;
-		  }
-		  r = 0;                  // copy rest from start of window
-		}
-
-	      }
-
-	      // copy all or what's left
-	      if(q-r>0 && c>(q-r)){           
-		do{s.window[q++] = s.window[r++];}
-		while(--c!=0);
-	      }
-	      else{
-		System.arraycopy(s.window, r, s.window, q, c);
-		q+=c; r+=c; c=0;
-	      }
-	      break;
-	    }
-	    else if((e&64)==0){
-	      t+=tp[tp_index_t_3+2];
-	      t+=(b&inflate_mask[e]);
-	      tp_index_t_3=(tp_index+t)*3;
-	      e=tp[tp_index_t_3];
-	    }
-	    else{
-	      z.msg = "invalid distance code";
-
-	      c=z.avail_in-n;c=(k>>3)<c?k>>3:c;n+=c;p-=c;k-=c<<3;
-
-	      s.bitb=b;s.bitk=k;
-	      z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	      s.write=q;
-
-	      return Z_DATA_ERROR;
-	    }
-	  }
-	  while(true);
-	  break;
-	}
-
-	if((e&64)==0){
-	  t+=tp[tp_index_t_3+2];
-	  t+=(b&inflate_mask[e]);
-	  tp_index_t_3=(tp_index+t)*3;
-	  if((e=tp[tp_index_t_3])==0){
-
-	    b>>=(tp[tp_index_t_3+1]); k-=(tp[tp_index_t_3+1]);
-
-	    s.window[q++]=(byte)tp[tp_index_t_3+2];
-	    m--;
-	    break;
-	  }
-	}
-	else if((e&32)!=0){
-
-	  c=z.avail_in-n;c=(k>>3)<c?k>>3:c;n+=c;p-=c;k-=c<<3;
- 
-	  s.bitb=b;s.bitk=k;
-	  z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	  s.write=q;
-
-	  return Z_STREAM_END;
-	}
-	else{
-	  z.msg="invalid literal/length code";
-
-	  c=z.avail_in-n;c=(k>>3)<c?k>>3:c;n+=c;p-=c;k-=c<<3;
-
-	  s.bitb=b;s.bitk=k;
-	  z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-	  s.write=q;
-
-	  return Z_DATA_ERROR;
-	}
-      } 
-      while(true);
-    } 
-    while(m>=258 && n>= 10);
-
-    // not enough input or output--restore pointers and return
-    c=z.avail_in-n;c=(k>>3)<c?k>>3:c;n+=c;p-=c;k-=c<<3;
-
-    s.bitb=b;s.bitk=k;
-    z.avail_in=n;z.total_in+=p-z.next_in_index;z.next_in_index=p;
-    s.write=q;
-
-    return Z_OK;
-  }
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/InfTree.java b/app/src/main/java/com/jcraft/jzlib/InfTree.java
deleted file mode 100644
index cbca436..0000000
--- a/app/src/main/java/com/jcraft/jzlib/InfTree.java
+++ /dev/null
@@ -1,520 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-final class InfTree{
-
-  static final private int MANY=1440;
-
-  static final private int Z_OK=0;
-  static final private int Z_STREAM_END=1;
-  static final private int Z_NEED_DICT=2;
-  static final private int Z_ERRNO=-1;
-  static final private int Z_STREAM_ERROR=-2;
-  static final private int Z_DATA_ERROR=-3;
-  static final private int Z_MEM_ERROR=-4;
-  static final private int Z_BUF_ERROR=-5;
-  static final private int Z_VERSION_ERROR=-6;
-
-  static final int fixed_bl = 9;
-  static final int fixed_bd = 5;
-
-  static final int[] fixed_tl = {
-    96,7,256, 0,8,80, 0,8,16, 84,8,115,
-    82,7,31, 0,8,112, 0,8,48, 0,9,192,
-    80,7,10, 0,8,96, 0,8,32, 0,9,160,
-    0,8,0, 0,8,128, 0,8,64, 0,9,224,
-    80,7,6, 0,8,88, 0,8,24, 0,9,144,
-    83,7,59, 0,8,120, 0,8,56, 0,9,208,
-    81,7,17, 0,8,104, 0,8,40, 0,9,176,
-    0,8,8, 0,8,136, 0,8,72, 0,9,240,
-    80,7,4, 0,8,84, 0,8,20, 85,8,227,
-    83,7,43, 0,8,116, 0,8,52, 0,9,200,
-    81,7,13, 0,8,100, 0,8,36, 0,9,168,
-    0,8,4, 0,8,132, 0,8,68, 0,9,232,
-    80,7,8, 0,8,92, 0,8,28, 0,9,152,
-    84,7,83, 0,8,124, 0,8,60, 0,9,216,
-    82,7,23, 0,8,108, 0,8,44, 0,9,184,
-    0,8,12, 0,8,140, 0,8,76, 0,9,248,
-    80,7,3, 0,8,82, 0,8,18, 85,8,163,
-    83,7,35, 0,8,114, 0,8,50, 0,9,196,
-    81,7,11, 0,8,98, 0,8,34, 0,9,164,
-    0,8,2, 0,8,130, 0,8,66, 0,9,228,
-    80,7,7, 0,8,90, 0,8,26, 0,9,148,
-    84,7,67, 0,8,122, 0,8,58, 0,9,212,
-    82,7,19, 0,8,106, 0,8,42, 0,9,180,
-    0,8,10, 0,8,138, 0,8,74, 0,9,244,
-    80,7,5, 0,8,86, 0,8,22, 192,8,0,
-    83,7,51, 0,8,118, 0,8,54, 0,9,204,
-    81,7,15, 0,8,102, 0,8,38, 0,9,172,
-    0,8,6, 0,8,134, 0,8,70, 0,9,236,
-    80,7,9, 0,8,94, 0,8,30, 0,9,156,
-    84,7,99, 0,8,126, 0,8,62, 0,9,220,
-    82,7,27, 0,8,110, 0,8,46, 0,9,188,
-    0,8,14, 0,8,142, 0,8,78, 0,9,252,
-    96,7,256, 0,8,81, 0,8,17, 85,8,131,
-    82,7,31, 0,8,113, 0,8,49, 0,9,194,
-    80,7,10, 0,8,97, 0,8,33, 0,9,162,
-    0,8,1, 0,8,129, 0,8,65, 0,9,226,
-    80,7,6, 0,8,89, 0,8,25, 0,9,146,
-    83,7,59, 0,8,121, 0,8,57, 0,9,210,
-    81,7,17, 0,8,105, 0,8,41, 0,9,178,
-    0,8,9, 0,8,137, 0,8,73, 0,9,242,
-    80,7,4, 0,8,85, 0,8,21, 80,8,258,
-    83,7,43, 0,8,117, 0,8,53, 0,9,202,
-    81,7,13, 0,8,101, 0,8,37, 0,9,170,
-    0,8,5, 0,8,133, 0,8,69, 0,9,234,
-    80,7,8, 0,8,93, 0,8,29, 0,9,154,
-    84,7,83, 0,8,125, 0,8,61, 0,9,218,
-    82,7,23, 0,8,109, 0,8,45, 0,9,186,
-    0,8,13, 0,8,141, 0,8,77, 0,9,250,
-    80,7,3, 0,8,83, 0,8,19, 85,8,195,
-    83,7,35, 0,8,115, 0,8,51, 0,9,198,
-    81,7,11, 0,8,99, 0,8,35, 0,9,166,
-    0,8,3, 0,8,131, 0,8,67, 0,9,230,
-    80,7,7, 0,8,91, 0,8,27, 0,9,150,
-    84,7,67, 0,8,123, 0,8,59, 0,9,214,
-    82,7,19, 0,8,107, 0,8,43, 0,9,182,
-    0,8,11, 0,8,139, 0,8,75, 0,9,246,
-    80,7,5, 0,8,87, 0,8,23, 192,8,0,
-    83,7,51, 0,8,119, 0,8,55, 0,9,206,
-    81,7,15, 0,8,103, 0,8,39, 0,9,174,
-    0,8,7, 0,8,135, 0,8,71, 0,9,238,
-    80,7,9, 0,8,95, 0,8,31, 0,9,158,
-    84,7,99, 0,8,127, 0,8,63, 0,9,222,
-    82,7,27, 0,8,111, 0,8,47, 0,9,190,
-    0,8,15, 0,8,143, 0,8,79, 0,9,254,
-    96,7,256, 0,8,80, 0,8,16, 84,8,115,
-    82,7,31, 0,8,112, 0,8,48, 0,9,193,
-
-    80,7,10, 0,8,96, 0,8,32, 0,9,161,
-    0,8,0, 0,8,128, 0,8,64, 0,9,225,
-    80,7,6, 0,8,88, 0,8,24, 0,9,145,
-    83,7,59, 0,8,120, 0,8,56, 0,9,209,
-    81,7,17, 0,8,104, 0,8,40, 0,9,177,
-    0,8,8, 0,8,136, 0,8,72, 0,9,241,
-    80,7,4, 0,8,84, 0,8,20, 85,8,227,
-    83,7,43, 0,8,116, 0,8,52, 0,9,201,
-    81,7,13, 0,8,100, 0,8,36, 0,9,169,
-    0,8,4, 0,8,132, 0,8,68, 0,9,233,
-    80,7,8, 0,8,92, 0,8,28, 0,9,153,
-    84,7,83, 0,8,124, 0,8,60, 0,9,217,
-    82,7,23, 0,8,108, 0,8,44, 0,9,185,
-    0,8,12, 0,8,140, 0,8,76, 0,9,249,
-    80,7,3, 0,8,82, 0,8,18, 85,8,163,
-    83,7,35, 0,8,114, 0,8,50, 0,9,197,
-    81,7,11, 0,8,98, 0,8,34, 0,9,165,
-    0,8,2, 0,8,130, 0,8,66, 0,9,229,
-    80,7,7, 0,8,90, 0,8,26, 0,9,149,
-    84,7,67, 0,8,122, 0,8,58, 0,9,213,
-    82,7,19, 0,8,106, 0,8,42, 0,9,181,
-    0,8,10, 0,8,138, 0,8,74, 0,9,245,
-    80,7,5, 0,8,86, 0,8,22, 192,8,0,
-    83,7,51, 0,8,118, 0,8,54, 0,9,205,
-    81,7,15, 0,8,102, 0,8,38, 0,9,173,
-    0,8,6, 0,8,134, 0,8,70, 0,9,237,
-    80,7,9, 0,8,94, 0,8,30, 0,9,157,
-    84,7,99, 0,8,126, 0,8,62, 0,9,221,
-    82,7,27, 0,8,110, 0,8,46, 0,9,189,
-    0,8,14, 0,8,142, 0,8,78, 0,9,253,
-    96,7,256, 0,8,81, 0,8,17, 85,8,131,
-    82,7,31, 0,8,113, 0,8,49, 0,9,195,
-    80,7,10, 0,8,97, 0,8,33, 0,9,163,
-    0,8,1, 0,8,129, 0,8,65, 0,9,227,
-    80,7,6, 0,8,89, 0,8,25, 0,9,147,
-    83,7,59, 0,8,121, 0,8,57, 0,9,211,
-    81,7,17, 0,8,105, 0,8,41, 0,9,179,
-    0,8,9, 0,8,137, 0,8,73, 0,9,243,
-    80,7,4, 0,8,85, 0,8,21, 80,8,258,
-    83,7,43, 0,8,117, 0,8,53, 0,9,203,
-    81,7,13, 0,8,101, 0,8,37, 0,9,171,
-    0,8,5, 0,8,133, 0,8,69, 0,9,235,
-    80,7,8, 0,8,93, 0,8,29, 0,9,155,
-    84,7,83, 0,8,125, 0,8,61, 0,9,219,
-    82,7,23, 0,8,109, 0,8,45, 0,9,187,
-    0,8,13, 0,8,141, 0,8,77, 0,9,251,
-    80,7,3, 0,8,83, 0,8,19, 85,8,195,
-    83,7,35, 0,8,115, 0,8,51, 0,9,199,
-    81,7,11, 0,8,99, 0,8,35, 0,9,167,
-    0,8,3, 0,8,131, 0,8,67, 0,9,231,
-    80,7,7, 0,8,91, 0,8,27, 0,9,151,
-    84,7,67, 0,8,123, 0,8,59, 0,9,215,
-    82,7,19, 0,8,107, 0,8,43, 0,9,183,
-    0,8,11, 0,8,139, 0,8,75, 0,9,247,
-    80,7,5, 0,8,87, 0,8,23, 192,8,0,
-    83,7,51, 0,8,119, 0,8,55, 0,9,207,
-    81,7,15, 0,8,103, 0,8,39, 0,9,175,
-    0,8,7, 0,8,135, 0,8,71, 0,9,239,
-    80,7,9, 0,8,95, 0,8,31, 0,9,159,
-    84,7,99, 0,8,127, 0,8,63, 0,9,223,
-    82,7,27, 0,8,111, 0,8,47, 0,9,191,
-    0,8,15, 0,8,143, 0,8,79, 0,9,255
-  };
-  static final int[] fixed_td = {
-    80,5,1, 87,5,257, 83,5,17, 91,5,4097,
-    81,5,5, 89,5,1025, 85,5,65, 93,5,16385,
-    80,5,3, 88,5,513, 84,5,33, 92,5,8193,
-    82,5,9, 90,5,2049, 86,5,129, 192,5,24577,
-    80,5,2, 87,5,385, 83,5,25, 91,5,6145,
-    81,5,7, 89,5,1537, 85,5,97, 93,5,24577,
-    80,5,4, 88,5,769, 84,5,49, 92,5,12289,
-    82,5,13, 90,5,3073, 86,5,193, 192,5,24577
-  };
-
-  // Tables for deflate from PKZIP's appnote.txt.
-  static final int[] cplens = { // Copy lengths for literal codes 257..285
-        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
-        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
-  };
-
-  // see note #13 above about 258
-  static final int[] cplext = { // Extra bits for literal codes 257..285
-        0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
-        3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 112, 112  // 112==invalid
-  };
-
-  static final int[] cpdist = { // Copy offsets for distance codes 0..29
-        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
-        257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
-        8193, 12289, 16385, 24577
-  };
-
-  static final int[] cpdext = { // Extra bits for distance codes
-        0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
-        7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
-        12, 12, 13, 13};
-
-  // If BMAX needs to be larger than 16, then h and x[] should be uLong.
-  static final int BMAX=15;         // maximum bit length of any code
-
-  int[] hn = null;  // hufts used in space
-  int[] v = null;   // work area for huft_build 
-  int[] c = null;   // bit length count table
-  int[] r = null;   // table entry for structure assignment
-  int[] u = null;   // table stack
-  int[] x = null;   // bit offsets, then code stack
-
-  private int huft_build(int[] b, // code lengths in bits (all assumed <= BMAX)
-                         int bindex, 
-                         int n,   // number of codes (assumed <= 288)
-                         int s,   // number of simple-valued codes (0..s-1)
-                         int[] d, // list of base values for non-simple codes
-                         int[] e, // list of extra bits for non-simple codes
-                         int[] t, // result: starting table
-                         int[] m, // maximum lookup bits, returns actual
-                         int[] hp,// space for trees
-                         int[] hn,// hufts used in space
-                         int[] v  // working area: values in order of bit length
-                         ){
-    // Given a list of code lengths and a maximum table size, make a set of
-    // tables to decode that set of codes.  Return Z_OK on success, Z_BUF_ERROR
-    // if the given code set is incomplete (the tables are still built in this
-    // case), Z_DATA_ERROR if the input is invalid (an over-subscribed set of
-    // lengths), or Z_MEM_ERROR if not enough memory.
-
-    int a;                       // counter for codes of length k
-    int f;                       // i repeats in table every f entries
-    int g;                       // maximum code length
-    int h;                       // table level
-    int i;                       // counter, current code
-    int j;                       // counter
-    int k;                       // number of bits in current code
-    int l;                       // bits per table (returned in m)
-    int mask;                    // (1 << w) - 1, to avoid cc -O bug on HP
-    int p;                       // pointer into c[], b[], or v[]
-    int q;                       // points to current table
-    int w;                       // bits before this table == (l * h)
-    int xp;                      // pointer into x
-    int y;                       // number of dummy codes added
-    int z;                       // number of entries in current table
-
-    // Generate counts for each bit length
-
-    p = 0; i = n;
-    do {
-      c[b[bindex+p]]++; p++; i--;   // assume all entries <= BMAX
-    }while(i!=0);
-
-    if(c[0] == n){                // null input--all zero length codes
-      t[0] = -1;
-      m[0] = 0;
-      return Z_OK;
-    }
-
-    // Find minimum and maximum length, bound *m by those
-    l = m[0];
-    for (j = 1; j <= BMAX; j++)
-      if(c[j]!=0) break;
-    k = j;                        // minimum code length
-    if(l < j){
-      l = j;
-    }
-    for (i = BMAX; i!=0; i--){
-      if(c[i]!=0) break;
-    }
-    g = i;                        // maximum code length
-    if(l > i){
-      l = i;
-    }
-    m[0] = l;
-
-    // Adjust last length count to fill out codes, if needed
-    for (y = 1 << j; j < i; j++, y <<= 1){
-      if ((y -= c[j]) < 0){
-        return Z_DATA_ERROR;
-      }
-    }
-    if ((y -= c[i]) < 0){
-      return Z_DATA_ERROR;
-    }
-    c[i] += y;
-
-    // Generate starting offsets into the value table for each length
-    x[1] = j = 0;
-    p = 1;  xp = 2;
-    while (--i!=0) {                 // note that i == g from above
-      x[xp] = (j += c[p]);
-      xp++;
-      p++;
-    }
-
-    // Make a table of values in order of bit lengths
-    i = 0; p = 0;
-    do {
-      if ((j = b[bindex+p]) != 0){
-        v[x[j]++] = i;
-      }
-      p++;
-    }
-    while (++i < n);
-    n = x[g];                     // set n to length of v
-
-    // Generate the Huffman codes and for each, make the table entries
-    x[0] = i = 0;                 // first Huffman code is zero
-    p = 0;                        // grab values in bit order
-    h = -1;                       // no tables yet--level -1
-    w = -l;                       // bits decoded == (l * h)
-    u[0] = 0;                     // just to keep compilers happy
-    q = 0;                        // ditto
-    z = 0;                        // ditto
-
-    // go through the bit lengths (k already is bits in shortest code)
-    for (; k <= g; k++){
-      a = c[k];
-      while (a--!=0){
-	// here i is the Huffman code of length k bits for value *p
-	// make tables up to required level
-        while (k > w + l){
-          h++;
-          w += l;                 // previous table always l bits
-	  // compute minimum size table less than or equal to l bits
-          z = g - w;
-          z = (z > l) ? l : z;        // table size upper limit
-          if((f=1<<(j=k-w))>a+1){     // try a k-w bit table
-                                      // too few codes for k-w bit table
-            f -= a + 1;               // deduct codes from patterns left
-            xp = k;
-            if(j < z){
-              while (++j < z){        // try smaller tables up to z bits
-                if((f <<= 1) <= c[++xp])
-                  break;              // enough codes to use up j bits
-                f -= c[xp];           // else deduct codes from patterns
-              }
-	    }
-          }
-          z = 1 << j;                 // table entries for j-bit table
-
-	  // allocate new table
-          if (hn[0] + z > MANY){       // (note: doesn't matter for fixed)
-            return Z_DATA_ERROR;       // overflow of MANY
-          }
-          u[h] = q = /*hp+*/ hn[0];   // DEBUG
-          hn[0] += z;
- 
-	  // connect to last table, if there is one
-	  if(h!=0){
-            x[h]=i;           // save pattern for backing up
-            r[0]=(byte)j;     // bits in this table
-            r[1]=(byte)l;     // bits to dump before this table
-            j=i>>>(w - l);
-            r[2] = (int)(q - u[h-1] - j);               // offset to this table
-            System.arraycopy(r, 0, hp, (u[h-1]+j)*3, 3); // connect to last table
-          }
-          else{
-            t[0] = q;               // first table is returned result
-	  }
-        }
-
-	// set up table entry in r
-        r[1] = (byte)(k - w);
-        if (p >= n){
-          r[0] = 128 + 64;      // out of values--invalid code
-	}
-        else if (v[p] < s){
-          r[0] = (byte)(v[p] < 256 ? 0 : 32 + 64);  // 256 is end-of-block
-          r[2] = v[p++];          // simple code is just the value
-        }
-        else{
-          r[0]=(byte)(e[v[p]-s]+16+64); // non-simple--look up in lists
-          r[2]=d[v[p++] - s];
-        }
-
-        // fill code-like entries with r
-        f=1<<(k-w);
-        for (j=i>>>w;j<z;j+=f){
-          System.arraycopy(r, 0, hp, (q+j)*3, 3);
-	}
-
-	// backwards increment the k-bit code i
-        for (j = 1 << (k - 1); (i & j)!=0; j >>>= 1){
-          i ^= j;
-	}
-        i ^= j;
-
-	// backup over finished tables
-        mask = (1 << w) - 1;      // needed on HP, cc -O bug
-        while ((i & mask) != x[h]){
-          h--;                    // don't need to update q
-          w -= l;
-          mask = (1 << w) - 1;
-        }
-      }
-    }
-    // Return Z_BUF_ERROR if we were given an incomplete table
-    return y != 0 && g != 1 ? Z_BUF_ERROR : Z_OK;
-  }
-
-  int inflate_trees_bits(int[] c,  // 19 code lengths
-                         int[] bb, // bits tree desired/actual depth
-                         int[] tb, // bits tree result
-                         int[] hp, // space for trees
-                         ZStream z // for messages
-                         ){
-    int result;
-    initWorkArea(19);
-    hn[0]=0;
-    result = huft_build(c, 0, 19, 19, null, null, tb, bb, hp, hn, v);
-
-    if(result == Z_DATA_ERROR){
-      z.msg = "oversubscribed dynamic bit lengths tree";
-    }
-    else if(result == Z_BUF_ERROR || bb[0] == 0){
-      z.msg = "incomplete dynamic bit lengths tree";
-      result = Z_DATA_ERROR;
-    }
-    return result;
-  }
-
-  int inflate_trees_dynamic(int nl,   // number of literal/length codes
-                            int nd,   // number of distance codes
-                            int[] c,  // that many (total) code lengths
-                            int[] bl, // literal desired/actual bit depth
-                            int[] bd, // distance desired/actual bit depth 
-                            int[] tl, // literal/length tree result
-                            int[] td, // distance tree result
-                            int[] hp, // space for trees
-                            ZStream z // for messages
-                            ){
-    int result;
-
-    // build literal/length tree
-    initWorkArea(288);
-    hn[0]=0;
-    result = huft_build(c, 0, nl, 257, cplens, cplext, tl, bl, hp, hn, v);
-    if (result != Z_OK || bl[0] == 0){
-      if(result == Z_DATA_ERROR){
-        z.msg = "oversubscribed literal/length tree";
-      }
-      else if (result != Z_MEM_ERROR){
-        z.msg = "incomplete literal/length tree";
-        result = Z_DATA_ERROR;
-      }
-      return result;
-    }
-
-    // build distance tree
-    initWorkArea(288);
-    result = huft_build(c, nl, nd, 0, cpdist, cpdext, td, bd, hp, hn, v);
-
-    if (result != Z_OK || (bd[0] == 0 && nl > 257)){
-      if (result == Z_DATA_ERROR){
-        z.msg = "oversubscribed distance tree";
-      }
-      else if (result == Z_BUF_ERROR) {
-        z.msg = "incomplete distance tree";
-        result = Z_DATA_ERROR;
-      }
-      else if (result != Z_MEM_ERROR){
-        z.msg = "empty distance tree with lengths";
-        result = Z_DATA_ERROR;
-      }
-      return result;
-    }
-
-    return Z_OK;
-  }
-
-  static int inflate_trees_fixed(int[] bl,  //literal desired/actual bit depth
-                                 int[] bd,  //distance desired/actual bit depth
-                                 int[][] tl,//literal/length tree result
-                                 int[][] td,//distance tree result 
-                                 ZStream z  //for memory allocation
-				 ){
-    bl[0]=fixed_bl;
-    bd[0]=fixed_bd;
-    tl[0]=fixed_tl;
-    td[0]=fixed_td;
-    return Z_OK;
-  }
-
-  private void initWorkArea(int vsize){
-    if(hn==null){
-      hn=new int[1];
-      v=new int[vsize];
-      c=new int[BMAX+1];
-      r=new int[3];
-      u=new int[BMAX];
-      x=new int[BMAX+1];
-    }
-    if(v.length<vsize){ v=new int[vsize]; }
-    for(int i=0; i<vsize; i++){v[i]=0;}
-    for(int i=0; i<BMAX+1; i++){c[i]=0;}
-    for(int i=0; i<3; i++){r[i]=0;}
-//  for(int i=0; i<BMAX; i++){u[i]=0;}
-    System.arraycopy(c, 0, u, 0, BMAX);
-//  for(int i=0; i<BMAX+1; i++){x[i]=0;}
-    System.arraycopy(c, 0, x, 0, BMAX+1);
-  }
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/Inflate.java b/app/src/main/java/com/jcraft/jzlib/Inflate.java
deleted file mode 100644
index 30310f6..0000000
--- a/app/src/main/java/com/jcraft/jzlib/Inflate.java
+++ /dev/null
@@ -1,374 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-final class Inflate{
-  
-  static final private int MAX_WBITS=15; // 32K LZ77 window
-
-  // preset dictionary flag in zlib header
-  static final private int PRESET_DICT=0x20;
-
-  static final int Z_NO_FLUSH=0;
-  static final int Z_PARTIAL_FLUSH=1;
-  static final int Z_SYNC_FLUSH=2;
-  static final int Z_FULL_FLUSH=3;
-  static final int Z_FINISH=4;
-
-  static final private int Z_DEFLATED=8;
-
-  static final private int Z_OK=0;
-  static final private int Z_STREAM_END=1;
-  static final private int Z_NEED_DICT=2;
-  static final private int Z_ERRNO=-1;
-  static final private int Z_STREAM_ERROR=-2;
-  static final private int Z_DATA_ERROR=-3;
-  static final private int Z_MEM_ERROR=-4;
-  static final private int Z_BUF_ERROR=-5;
-  static final private int Z_VERSION_ERROR=-6;
-
-  static final private int METHOD=0;   // waiting for method byte
-  static final private int FLAG=1;     // waiting for flag byte
-  static final private int DICT4=2;    // four dictionary check bytes to go
-  static final private int DICT3=3;    // three dictionary check bytes to go
-  static final private int DICT2=4;    // two dictionary check bytes to go
-  static final private int DICT1=5;    // one dictionary check byte to go
-  static final private int DICT0=6;    // waiting for inflateSetDictionary
-  static final private int BLOCKS=7;   // decompressing blocks
-  static final private int CHECK4=8;   // four check bytes to go
-  static final private int CHECK3=9;   // three check bytes to go
-  static final private int CHECK2=10;  // two check bytes to go
-  static final private int CHECK1=11;  // one check byte to go
-  static final private int DONE=12;    // finished check, done
-  static final private int BAD=13;     // got an error--stay here
-
-  int mode;                            // current inflate mode
-
-  // mode dependent information
-  int method;        // if FLAGS, method byte
-
-  // if CHECK, check values to compare
-  long[] was=new long[1] ; // computed check value
-  long need;               // stream check value
-
-  // if BAD, inflateSync's marker bytes count
-  int marker;
-
-  // mode independent information
-  int  nowrap;          // flag for no wrapper
-  int wbits;            // log2(window size)  (8..15, defaults to 15)
-
-  InfBlocks blocks;     // current inflate_blocks state
-
-  int inflateReset(ZStream z){
-    if(z == null || z.istate == null) return Z_STREAM_ERROR;
-    
-    z.total_in = z.total_out = 0;
-    z.msg = null;
-    z.istate.mode = z.istate.nowrap!=0 ? BLOCKS : METHOD;
-    z.istate.blocks.reset(z, null);
-    return Z_OK;
-  }
-
-  int inflateEnd(ZStream z){
-    if(blocks != null)
-      blocks.free(z);
-    blocks=null;
-    //    ZFREE(z, z->state);
-    return Z_OK;
-  }
-
-  int inflateInit(ZStream z, int w){
-    z.msg = null;
-    blocks = null;
-
-    // handle undocumented nowrap option (no zlib header or check)
-    nowrap = 0;
-    if(w < 0){
-      w = - w;
-      nowrap = 1;
-    }
-
-    // set window size
-    if(w<8 ||w>15){
-      inflateEnd(z);
-      return Z_STREAM_ERROR;
-    }
-    wbits=w;
-
-    z.istate.blocks=new InfBlocks(z, 
-				  z.istate.nowrap!=0 ? null : this,
-				  1<<w);
-
-    // reset state
-    inflateReset(z);
-    return Z_OK;
-  }
-
-  int inflate(ZStream z, int f){
-    int r;
-    int b;
-
-    if(z == null || z.istate == null || z.next_in == null)
-      return Z_STREAM_ERROR;
-    f = f == Z_FINISH ? Z_BUF_ERROR : Z_OK;
-    r = Z_BUF_ERROR;
-    while (true){
-//System.out.println("mode: "+z.istate.mode);
-      switch (z.istate.mode){
-      case METHOD:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        if(((z.istate.method = z.next_in[z.next_in_index++])&0xf)!=Z_DEFLATED){
-          z.istate.mode = BAD;
-          z.msg="unknown compression method";
-          z.istate.marker = 5;       // can't try inflateSync
-          break;
-        }
-        if((z.istate.method>>4)+8>z.istate.wbits){
-          z.istate.mode = BAD;
-          z.msg="invalid window size";
-          z.istate.marker = 5;       // can't try inflateSync
-          break;
-        }
-        z.istate.mode=FLAG;
-      case FLAG:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        b = (z.next_in[z.next_in_index++])&0xff;
-
-        if((((z.istate.method << 8)+b) % 31)!=0){
-          z.istate.mode = BAD;
-          z.msg = "incorrect header check";
-          z.istate.marker = 5;       // can't try inflateSync
-          break;
-        }
-
-        if((b&PRESET_DICT)==0){
-          z.istate.mode = BLOCKS;
-          break;
-        }
-        z.istate.mode = DICT4;
-      case DICT4:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        z.istate.need=((z.next_in[z.next_in_index++]&0xff)<<24)&0xff000000L;
-        z.istate.mode=DICT3;
-      case DICT3:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        z.istate.need+=((z.next_in[z.next_in_index++]&0xff)<<16)&0xff0000L;
-        z.istate.mode=DICT2;
-      case DICT2:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        z.istate.need+=((z.next_in[z.next_in_index++]&0xff)<<8)&0xff00L;
-        z.istate.mode=DICT1;
-      case DICT1:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        z.istate.need += (z.next_in[z.next_in_index++]&0xffL);
-        z.adler = z.istate.need;
-        z.istate.mode = DICT0;
-        return Z_NEED_DICT;
-      case DICT0:
-        z.istate.mode = BAD;
-        z.msg = "need dictionary";
-        z.istate.marker = 0;       // can try inflateSync
-        return Z_STREAM_ERROR;
-      case BLOCKS:
-
-        r = z.istate.blocks.proc(z, r);
-        if(r == Z_DATA_ERROR){
-          z.istate.mode = BAD;
-          z.istate.marker = 0;     // can try inflateSync
-          break;
-        }
-        if(r == Z_OK){
-          r = f;
-        }
-        if(r != Z_STREAM_END){
-          return r;
-        }
-        r = f;
-        z.istate.blocks.reset(z, z.istate.was);
-        if(z.istate.nowrap!=0){
-          z.istate.mode=DONE;
-          break;
-        }
-        z.istate.mode=CHECK4;
-      case CHECK4:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        z.istate.need=((z.next_in[z.next_in_index++]&0xff)<<24)&0xff000000L;
-        z.istate.mode=CHECK3;
-      case CHECK3:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        z.istate.need+=((z.next_in[z.next_in_index++]&0xff)<<16)&0xff0000L;
-        z.istate.mode = CHECK2;
-      case CHECK2:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        z.istate.need+=((z.next_in[z.next_in_index++]&0xff)<<8)&0xff00L;
-        z.istate.mode = CHECK1;
-      case CHECK1:
-
-        if(z.avail_in==0)return r;r=f;
-
-        z.avail_in--; z.total_in++;
-        z.istate.need+=(z.next_in[z.next_in_index++]&0xffL);
-
-        if(((int)(z.istate.was[0])) != ((int)(z.istate.need))){
-          z.istate.mode = BAD;
-          z.msg = "incorrect data check";
-          z.istate.marker = 5;       // can't try inflateSync
-          break;
-        }
-
-        z.istate.mode = DONE;
-      case DONE:
-        return Z_STREAM_END;
-      case BAD:
-        return Z_DATA_ERROR;
-      default:
-        return Z_STREAM_ERROR;
-      }
-    }
-  }
-
-
-  int inflateSetDictionary(ZStream z, byte[] dictionary, int dictLength){
-    int index=0;
-    int length = dictLength;
-    if(z==null || z.istate == null|| z.istate.mode != DICT0)
-      return Z_STREAM_ERROR;
-
-    if(z._adler.adler32(1L, dictionary, 0, dictLength)!=z.adler){
-      return Z_DATA_ERROR;
-    }
-
-    z.adler = z._adler.adler32(0, null, 0, 0);
-
-    if(length >= (1<<z.istate.wbits)){
-      length = (1<<z.istate.wbits)-1;
-      index=dictLength - length;
-    }
-    z.istate.blocks.set_dictionary(dictionary, index, length);
-    z.istate.mode = BLOCKS;
-    return Z_OK;
-  }
-
-  static private byte[] mark = {(byte)0, (byte)0, (byte)0xff, (byte)0xff};
-
-  int inflateSync(ZStream z){
-    int n;       // number of bytes to look at
-    int p;       // pointer to bytes
-    int m;       // number of marker bytes found in a row
-    long r, w;   // temporaries to save total_in and total_out
-
-    // set up
-    if(z == null || z.istate == null)
-      return Z_STREAM_ERROR;
-    if(z.istate.mode != BAD){
-      z.istate.mode = BAD;
-      z.istate.marker = 0;
-    }
-    if((n=z.avail_in)==0)
-      return Z_BUF_ERROR;
-    p=z.next_in_index;
-    m=z.istate.marker;
-
-    // search
-    while (n!=0 && m < 4){
-      if(z.next_in[p] == mark[m]){
-        m++;
-      }
-      else if(z.next_in[p]!=0){
-        m = 0;
-      }
-      else{
-        m = 4 - m;
-      }
-      p++; n--;
-    }
-
-    // restore
-    z.total_in += p-z.next_in_index;
-    z.next_in_index = p;
-    z.avail_in = n;
-    z.istate.marker = m;
-
-    // return no joy or set up to restart on a new block
-    if(m != 4){
-      return Z_DATA_ERROR;
-    }
-    r=z.total_in;  w=z.total_out;
-    inflateReset(z);
-    z.total_in=r;  z.total_out = w;
-    z.istate.mode = BLOCKS;
-    return Z_OK;
-  }
-
-  // Returns true if inflate is currently at the end of a block generated
-  // by Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
-  // implementation to provide an additional safety check. PPP uses Z_SYNC_FLUSH
-  // but removes the length bytes of the resulting empty stored block. When
-  // decompressing, PPP checks that at the end of input packet, inflate is
-  // waiting for these length bytes.
-  int inflateSyncPoint(ZStream z){
-    if(z == null || z.istate == null || z.istate.blocks == null)
-      return Z_STREAM_ERROR;
-    return z.istate.blocks.sync_point();
-  }
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/JZlib.java b/app/src/main/java/com/jcraft/jzlib/JZlib.java
deleted file mode 100644
index b84d7a1..0000000
--- a/app/src/main/java/com/jcraft/jzlib/JZlib.java
+++ /dev/null
@@ -1,67 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-final public class JZlib{
-  private static final String version="1.0.2";
-  public static String version(){return version;}
-
-  // compression levels
-  static final public int Z_NO_COMPRESSION=0;
-  static final public int Z_BEST_SPEED=1;
-  static final public int Z_BEST_COMPRESSION=9;
-  static final public int Z_DEFAULT_COMPRESSION=(-1);
-
-  // compression strategy
-  static final public int Z_FILTERED=1;
-  static final public int Z_HUFFMAN_ONLY=2;
-  static final public int Z_DEFAULT_STRATEGY=0;
-
-  static final public int Z_NO_FLUSH=0;
-  static final public int Z_PARTIAL_FLUSH=1;
-  static final public int Z_SYNC_FLUSH=2;
-  static final public int Z_FULL_FLUSH=3;
-  static final public int Z_FINISH=4;
-
-  static final public int Z_OK=0;
-  static final public int Z_STREAM_END=1;
-  static final public int Z_NEED_DICT=2;
-  static final public int Z_ERRNO=-1;
-  static final public int Z_STREAM_ERROR=-2;
-  static final public int Z_DATA_ERROR=-3;
-  static final public int Z_MEM_ERROR=-4;
-  static final public int Z_BUF_ERROR=-5;
-  static final public int Z_VERSION_ERROR=-6;
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/StaticTree.java b/app/src/main/java/com/jcraft/jzlib/StaticTree.java
deleted file mode 100644
index 0f7f577..0000000
--- a/app/src/main/java/com/jcraft/jzlib/StaticTree.java
+++ /dev/null
@@ -1,149 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-final class StaticTree{
-  static final private int MAX_BITS=15;
-
-  static final private int BL_CODES=19;
-  static final private int D_CODES=30;
-  static final private int LITERALS=256;
-  static final private int LENGTH_CODES=29;
-  static final private int L_CODES=(LITERALS+1+LENGTH_CODES);
-
-  // Bit length codes must not exceed MAX_BL_BITS bits
-  static final int MAX_BL_BITS=7; 
-
-  static final short[] static_ltree = {
-    12,  8, 140,  8,  76,  8, 204,  8,  44,  8,
-    172,  8, 108,  8, 236,  8,  28,  8, 156,  8,
-    92,  8, 220,  8,  60,  8, 188,  8, 124,  8,
-    252,  8,   2,  8, 130,  8,  66,  8, 194,  8,
-    34,  8, 162,  8,  98,  8, 226,  8,  18,  8,
-    146,  8,  82,  8, 210,  8,  50,  8, 178,  8,
-    114,  8, 242,  8,  10,  8, 138,  8,  74,  8,
-    202,  8,  42,  8, 170,  8, 106,  8, 234,  8,
-    26,  8, 154,  8,  90,  8, 218,  8,  58,  8,
-    186,  8, 122,  8, 250,  8,   6,  8, 134,  8,
-    70,  8, 198,  8,  38,  8, 166,  8, 102,  8,
-    230,  8,  22,  8, 150,  8,  86,  8, 214,  8,
-    54,  8, 182,  8, 118,  8, 246,  8,  14,  8,
-    142,  8,  78,  8, 206,  8,  46,  8, 174,  8,
-    110,  8, 238,  8,  30,  8, 158,  8,  94,  8,
-    222,  8,  62,  8, 190,  8, 126,  8, 254,  8,
-    1,  8, 129,  8,  65,  8, 193,  8,  33,  8,
-    161,  8,  97,  8, 225,  8,  17,  8, 145,  8,
-    81,  8, 209,  8,  49,  8, 177,  8, 113,  8,
-    241,  8,   9,  8, 137,  8,  73,  8, 201,  8,
-    41,  8, 169,  8, 105,  8, 233,  8,  25,  8,
-    153,  8,  89,  8, 217,  8,  57,  8, 185,  8,
-    121,  8, 249,  8,   5,  8, 133,  8,  69,  8,
-    197,  8,  37,  8, 165,  8, 101,  8, 229,  8,
-    21,  8, 149,  8,  85,  8, 213,  8,  53,  8,
-    181,  8, 117,  8, 245,  8,  13,  8, 141,  8,
-    77,  8, 205,  8,  45,  8, 173,  8, 109,  8,
-    237,  8,  29,  8, 157,  8,  93,  8, 221,  8,
-    61,  8, 189,  8, 125,  8, 253,  8,  19,  9,
-    275,  9, 147,  9, 403,  9,  83,  9, 339,  9,
-    211,  9, 467,  9,  51,  9, 307,  9, 179,  9,
-    435,  9, 115,  9, 371,  9, 243,  9, 499,  9,
-    11,  9, 267,  9, 139,  9, 395,  9,  75,  9,
-    331,  9, 203,  9, 459,  9,  43,  9, 299,  9,
-    171,  9, 427,  9, 107,  9, 363,  9, 235,  9,
-    491,  9,  27,  9, 283,  9, 155,  9, 411,  9,
-    91,  9, 347,  9, 219,  9, 475,  9,  59,  9,
-    315,  9, 187,  9, 443,  9, 123,  9, 379,  9,
-    251,  9, 507,  9,   7,  9, 263,  9, 135,  9,
-    391,  9,  71,  9, 327,  9, 199,  9, 455,  9,
-    39,  9, 295,  9, 167,  9, 423,  9, 103,  9,
-    359,  9, 231,  9, 487,  9,  23,  9, 279,  9,
-    151,  9, 407,  9,  87,  9, 343,  9, 215,  9,
-    471,  9,  55,  9, 311,  9, 183,  9, 439,  9,
-    119,  9, 375,  9, 247,  9, 503,  9,  15,  9,
-    271,  9, 143,  9, 399,  9,  79,  9, 335,  9,
-    207,  9, 463,  9,  47,  9, 303,  9, 175,  9,
-    431,  9, 111,  9, 367,  9, 239,  9, 495,  9,
-    31,  9, 287,  9, 159,  9, 415,  9,  95,  9,
-    351,  9, 223,  9, 479,  9,  63,  9, 319,  9,
-    191,  9, 447,  9, 127,  9, 383,  9, 255,  9,
-    511,  9,   0,  7,  64,  7,  32,  7,  96,  7,
-    16,  7,  80,  7,  48,  7, 112,  7,   8,  7,
-    72,  7,  40,  7, 104,  7,  24,  7,  88,  7,
-    56,  7, 120,  7,   4,  7,  68,  7,  36,  7,
-    100,  7,  20,  7,  84,  7,  52,  7, 116,  7,
-    3,  8, 131,  8,  67,  8, 195,  8,  35,  8,
-    163,  8,  99,  8, 227,  8
-  };
-
-  static final short[] static_dtree = {
-    0, 5, 16, 5,  8, 5, 24, 5,  4, 5,
-    20, 5, 12, 5, 28, 5,  2, 5, 18, 5,
-    10, 5, 26, 5,  6, 5, 22, 5, 14, 5,
-    30, 5,  1, 5, 17, 5,  9, 5, 25, 5,
-    5, 5, 21, 5, 13, 5, 29, 5,  3, 5,
-    19, 5, 11, 5, 27, 5,  7, 5, 23, 5
-  };
-
-  static StaticTree static_l_desc =
-    new StaticTree(static_ltree, Tree.extra_lbits,
-		   LITERALS+1, L_CODES, MAX_BITS);
-
-  static StaticTree static_d_desc =
-    new StaticTree(static_dtree, Tree.extra_dbits,
-		   0,  D_CODES, MAX_BITS);
-
-  static StaticTree static_bl_desc =
-    new StaticTree(null, Tree.extra_blbits,
-		   0, BL_CODES, MAX_BL_BITS);
-
-  short[] static_tree;     // static tree or null
-  int[] extra_bits;        // extra bits for each code or null
-  int extra_base;          // base index for extra_bits
-  int elems;               // max number of elements in the tree
-  int max_length;          // max bit length for the codes
-
-  StaticTree(short[] static_tree,
-	     int[] extra_bits,
-	     int extra_base,
-	     int elems,
-	     int max_length
-	     ){
-    this.static_tree=static_tree;
-    this.extra_bits=extra_bits;
-    this.extra_base=extra_base;
-    this.elems=elems;
-    this.max_length=max_length;
-  }
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/Tree.java b/app/src/main/java/com/jcraft/jzlib/Tree.java
deleted file mode 100644
index 8103897..0000000
--- a/app/src/main/java/com/jcraft/jzlib/Tree.java
+++ /dev/null
@@ -1,365 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-final class Tree{
-  static final private int MAX_BITS=15;
-  static final private int BL_CODES=19;
-  static final private int D_CODES=30;
-  static final private int LITERALS=256;
-  static final private int LENGTH_CODES=29;
-  static final private int L_CODES=(LITERALS+1+LENGTH_CODES);
-  static final private int HEAP_SIZE=(2*L_CODES+1);
-
-  // Bit length codes must not exceed MAX_BL_BITS bits
-  static final int MAX_BL_BITS=7; 
-
-  // end of block literal code
-  static final int END_BLOCK=256; 
-
-  // repeat previous bit length 3-6 times (2 bits of repeat count)
-  static final int REP_3_6=16; 
-
-  // repeat a zero length 3-10 times  (3 bits of repeat count)
-  static final int REPZ_3_10=17; 
-
-  // repeat a zero length 11-138 times  (7 bits of repeat count)
-  static final int REPZ_11_138=18; 
-
-  // extra bits for each length code
-  static final int[] extra_lbits={
-    0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0
-  };
-
-  // extra bits for each distance code
-  static final int[] extra_dbits={
-    0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13
-  };
-
-  // extra bits for each bit length code
-  static final int[] extra_blbits={
-    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7
-  };
-
-  static final byte[] bl_order={
-    16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};
-
-
-  // The lengths of the bit length codes are sent in order of decreasing
-  // probability, to avoid transmitting the lengths for unused bit
-  // length codes.
-
-  static final int Buf_size=8*2;
-
-  // see definition of array dist_code below
-  static final int DIST_CODE_LEN=512;
-
-  static final byte[] _dist_code = {
-    0,  1,  2,  3,  4,  4,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  8,
-    8,  8,  8,  8,  9,  9,  9,  9,  9,  9,  9,  9, 10, 10, 10, 10, 10, 10, 10, 10,
-    10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
-    11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
-    12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
-    13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
-    13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-    14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-    14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-    14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
-    15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
-    15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
-    15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,  0,  0, 16, 17,
-    18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
-    23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-    24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
-    26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
-    26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
-    27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
-    27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
-    28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
-    28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
-    28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
-    29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
-    29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
-    29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
-  };
-
-  static final byte[] _length_code={
-    0,  1,  2,  3,  4,  5,  6,  7,  8,  8,  9,  9, 10, 10, 11, 11, 12, 12, 12, 12,
-    13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
-    17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
-    19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
-    21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
-    22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
-    23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-    24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-    25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
-    25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
-    26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
-    26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
-    27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
-  };
-
-  static final int[] base_length = {
-    0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
-    64, 80, 96, 112, 128, 160, 192, 224, 0
-  };
-
-  static final int[] base_dist = {
-       0,   1,      2,     3,     4,    6,     8,    12,    16,     24,
-      32,  48,     64,    96,   128,  192,   256,   384,   512,    768,
-    1024, 1536,  2048,  3072,  4096,  6144,  8192, 12288, 16384, 24576
-  };
-
-  // Mapping from a distance to a distance code. dist is the distance - 1 and
-  // must not have side effects. _dist_code[256] and _dist_code[257] are never
-  // used.
-  static int d_code(int dist){
-    return ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>>7)]);
-  }
-
-  short[] dyn_tree;      // the dynamic tree
-  int     max_code;      // largest code with non zero frequency
-  StaticTree stat_desc;  // the corresponding static tree
-
-  // Compute the optimal bit lengths for a tree and update the total bit length
-  // for the current block.
-  // IN assertion: the fields freq and dad are set, heap[heap_max] and
-  //    above are the tree nodes sorted by increasing frequency.
-  // OUT assertions: the field len is set to the optimal bit length, the
-  //     array bl_count contains the frequencies for each bit length.
-  //     The length opt_len is updated; static_len is also updated if stree is
-  //     not null.
-  void gen_bitlen(Deflate s){
-    short[] tree = dyn_tree;
-    short[] stree = stat_desc.static_tree;
-    int[] extra = stat_desc.extra_bits;
-    int base = stat_desc.extra_base;
-    int max_length = stat_desc.max_length;
-    int h;              // heap index
-    int n, m;           // iterate over the tree elements
-    int bits;           // bit length
-    int xbits;          // extra bits
-    short f;            // frequency
-    int overflow = 0;   // number of elements with bit length too large
-
-    for (bits = 0; bits <= MAX_BITS; bits++) s.bl_count[bits] = 0;
-
-    // In a first pass, compute the optimal bit lengths (which may
-    // overflow in the case of the bit length tree).
-    tree[s.heap[s.heap_max]*2+1] = 0; // root of the heap
-
-    for(h=s.heap_max+1; h<HEAP_SIZE; h++){
-      n = s.heap[h];
-      bits = tree[tree[n*2+1]*2+1] + 1;
-      if (bits > max_length){ bits = max_length; overflow++; }
-      tree[n*2+1] = (short)bits;
-      // We overwrite tree[n*2+1] which is no longer needed
-
-      if (n > max_code) continue;  // not a leaf node
-
-      s.bl_count[bits]++;
-      xbits = 0;
-      if (n >= base) xbits = extra[n-base];
-      f = tree[n*2];
-      s.opt_len += f * (bits + xbits);
-      if (stree!=null) s.static_len += f * (stree[n*2+1] + xbits);
-    }
-    if (overflow == 0) return;
-
-    // This happens for example on obj2 and pic of the Calgary corpus
-    // Find the first bit length which could increase:
-    do {
-      bits = max_length-1;
-      while(s.bl_count[bits]==0) bits--;
-      s.bl_count[bits]--;      // move one leaf down the tree
-      s.bl_count[bits+1]+=2;   // move one overflow item as its brother
-      s.bl_count[max_length]--;
-      // The brother of the overflow item also moves one step up,
-      // but this does not affect bl_count[max_length]
-      overflow -= 2;
-    }
-    while (overflow > 0);
-
-    for (bits = max_length; bits != 0; bits--) {
-      n = s.bl_count[bits];
-      while (n != 0) {
-	m = s.heap[--h];
-	if (m > max_code) continue;
-	if (tree[m*2+1] != bits) {
-	  s.opt_len += ((long)bits - (long)tree[m*2+1])*(long)tree[m*2];
-	  tree[m*2+1] = (short)bits;
-	}
-	n--;
-      }
-    }
-  }
-
-  // Construct one Huffman tree and assigns the code bit strings and lengths.
-  // Update the total bit length for the current block.
-  // IN assertion: the field freq is set for all tree elements.
-  // OUT assertions: the fields len and code are set to the optimal bit length
-  //     and corresponding code. The length opt_len is updated; static_len is
-  //     also updated if stree is not null. The field max_code is set.
-  void build_tree(Deflate s){
-    short[] tree=dyn_tree;
-    short[] stree=stat_desc.static_tree;
-    int elems=stat_desc.elems;
-    int n, m;          // iterate over heap elements
-    int max_code=-1;   // largest code with non zero frequency
-    int node;          // new node being created
-
-    // Construct the initial heap, with least frequent element in
-    // heap[1]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
-    // heap[0] is not used.
-    s.heap_len = 0;
-    s.heap_max = HEAP_SIZE;
-
-    for(n=0; n<elems; n++) {
-      if(tree[n*2] != 0) {
-	s.heap[++s.heap_len] = max_code = n;
-	s.depth[n] = 0;
-      }
-      else{
-	tree[n*2+1] = 0;
-      }
-    }
-
-    // The pkzip format requires that at least one distance code exists,
-    // and that at least one bit should be sent even if there is only one
-    // possible code. So to avoid special checks later on we force at least
-    // two codes of non zero frequency.
-    while (s.heap_len < 2) {
-      node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
-      tree[node*2] = 1;
-      s.depth[node] = 0;
-      s.opt_len--; if (stree!=null) s.static_len -= stree[node*2+1];
-      // node is 0 or 1 so it does not have extra bits
-    }
-    this.max_code = max_code;
-
-    // The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
-    // establish sub-heaps of increasing lengths:
-
-    for(n=s.heap_len/2;n>=1; n--)
-      s.pqdownheap(tree, n);
-
-    // Construct the Huffman tree by repeatedly combining the least two
-    // frequent nodes.
-
-    node=elems;                 // next internal node of the tree
-    do{
-      // n = node of least frequency
-      n=s.heap[1];
-      s.heap[1]=s.heap[s.heap_len--];
-      s.pqdownheap(tree, 1);
-      m=s.heap[1];                // m = node of next least frequency
-
-      s.heap[--s.heap_max] = n; // keep the nodes sorted by frequency
-      s.heap[--s.heap_max] = m;
-
-      // Create a new node father of n and m
-      tree[node*2] = (short)(tree[n*2] + tree[m*2]);
-      s.depth[node] = (byte)(Math.max(s.depth[n],s.depth[m])+1);
-      tree[n*2+1] = tree[m*2+1] = (short)node;
-
-      // and insert the new node in the heap
-      s.heap[1] = node++;
-      s.pqdownheap(tree, 1);
-    }
-    while(s.heap_len>=2);
-
-    s.heap[--s.heap_max] = s.heap[1];
-
-    // At this point, the fields freq and dad are set. We can now
-    // generate the bit lengths.
-
-    gen_bitlen(s);
-
-    // The field len is now set, we can generate the bit codes
-    gen_codes(tree, max_code, s.bl_count);
-  }
-
-  // Generate the codes for a given tree and bit counts (which need not be
-  // optimal).
-  // IN assertion: the array bl_count contains the bit length statistics for
-  // the given tree and the field len is set for all tree elements.
-  // OUT assertion: the field code is set for all tree elements of non
-  //     zero code length.
-  static void gen_codes(short[] tree, // the tree to decorate
-			int max_code, // largest code with non zero frequency
-			short[] bl_count // number of codes at each bit length
-			){
-    short[] next_code=new short[MAX_BITS+1]; // next code value for each bit length
-    short code = 0;            // running code value
-    int bits;                  // bit index
-    int n;                     // code index
-
-    // The distribution counts are first used to generate the code values
-    // without bit reversal.
-    for (bits = 1; bits <= MAX_BITS; bits++) {
-      next_code[bits] = code = (short)((code + bl_count[bits-1]) << 1);
-    }
-
-    // Check that the bit counts in bl_count are consistent. The last code
-    // must be all ones.
-    //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
-    //        "inconsistent bit counts");
-    //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
-
-    for (n = 0;  n <= max_code; n++) {
-      int len = tree[n*2+1];
-      if (len == 0) continue;
-      // Now reverse the bits
-      tree[n*2] = (short)(bi_reverse(next_code[len]++, len));
-    }
-  }
-
-  // Reverse the first len bits of a code, using straightforward code (a faster
-  // method would use a table)
-  // IN assertion: 1 <= len <= 15
-  static int bi_reverse(int code, // the value to invert
-			int len   // its bit length
-			){
-    int res = 0;
-    do{
-      res|=code&1;
-      code>>>=1;
-      res<<=1;
-    } 
-    while(--len>0);
-    return res>>>1;
-  }
-}
-
diff --git a/app/src/main/java/com/jcraft/jzlib/ZInputStream.java b/app/src/main/java/com/jcraft/jzlib/ZInputStream.java
deleted file mode 100644
index 3f97c44..0000000
--- a/app/src/main/java/com/jcraft/jzlib/ZInputStream.java
+++ /dev/null
@@ -1,149 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
-/*
-Copyright (c) 2001 Lapo Luchini.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS
-OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-import java.io.*;
-
-public class ZInputStream extends FilterInputStream {
-
-  protected ZStream z=new ZStream();
-  protected int bufsize=512;
-  protected int flush=JZlib.Z_NO_FLUSH;
-  protected byte[] buf=new byte[bufsize],
-                   buf1=new byte[1];
-  protected boolean compress;
-
-  protected InputStream in=null;
-
-  public ZInputStream(InputStream in) {
-    this(in, false);
-  }
-  public ZInputStream(InputStream in, boolean nowrap) {
-    super(in);
-    this.in=in;
-    z.inflateInit(nowrap);
-    compress=false;
-    z.next_in=buf;
-    z.next_in_index=0;
-    z.avail_in=0;
-  }
-
-  public ZInputStream(InputStream in, int level) {
-    super(in);
-    this.in=in;
-    z.deflateInit(level);
-    compress=true;
-    z.next_in=buf;
-    z.next_in_index=0;
-    z.avail_in=0;
-  }
-
-  /*public int available() throws IOException {
-    return inf.finished() ? 0 : 1;
-  }*/
-
-  public int read() throws IOException {
-    if(read(buf1, 0, 1)==-1)
-      return(-1);
-    return(buf1[0]&0xFF);
-  }
-
-  private boolean nomoreinput=false;
-
-  public int read(byte[] b, int off, int len) throws IOException {
-    if(len==0)
-      return(0);
-    int err;
-    z.next_out=b;
-    z.next_out_index=off;
-    z.avail_out=len;
-    do {
-      if((z.avail_in==0)&&(!nomoreinput)) { // if buffer is empty and more input is avaiable, refill it
-	z.next_in_index=0;
-	z.avail_in=in.read(buf, 0, bufsize);//(bufsize<z.avail_out ? bufsize : z.avail_out));
-	if(z.avail_in==-1) {
-	  z.avail_in=0;
-	  nomoreinput=true;
-	}
-      }
-      if(compress)
-	err=z.deflate(flush);
-      else
-	err=z.inflate(flush);
-      if(nomoreinput&&(err==JZlib.Z_BUF_ERROR))
-        return(-1);
-      if(err!=JZlib.Z_OK && err!=JZlib.Z_STREAM_END)
-	throw new ZStreamException((compress ? "de" : "in")+"flating: "+z.msg);
-      if((nomoreinput||err==JZlib.Z_STREAM_END)&&(z.avail_out==len))
-	return(-1);
-    } 
-    while(z.avail_out==len&&err==JZlib.Z_OK);
-    //System.err.print("("+(len-z.avail_out)+")");
-    return(len-z.avail_out);
-  }
-
-  public long skip(long n) throws IOException {
-    int len=512;
-    if(n<len)
-      len=(int)n;
-    byte[] tmp=new byte[len];
-    return((long)read(tmp));
-  }
-
-  public int getFlushMode() {
-    return(flush);
-  }
-
-  public void setFlushMode(int flush) {
-    this.flush=flush;
-  }
-
-  /**
-   * Returns the total number of bytes input so far.
-   */
-  public long getTotalIn() {
-    return z.total_in;
-  }
-
-  /**
-   * Returns the total number of bytes output so far.
-   */
-  public long getTotalOut() {
-    return z.total_out;
-  }
-
-  public void close() throws IOException{
-    in.close();
-  }
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/ZOutputStream.java b/app/src/main/java/com/jcraft/jzlib/ZOutputStream.java
deleted file mode 100644
index afee65b..0000000
--- a/app/src/main/java/com/jcraft/jzlib/ZOutputStream.java
+++ /dev/null
@@ -1,156 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
-/*
-Copyright (c) 2001 Lapo Luchini.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS
-OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-import java.io.*;
-
-public class ZOutputStream extends OutputStream {
-
-  protected ZStream z=new ZStream();
-  protected int bufsize=512;
-  protected int flush=JZlib.Z_NO_FLUSH;
-  protected byte[] buf=new byte[bufsize],
-                   buf1=new byte[1];
-  protected boolean compress;
-
-  protected OutputStream out;
-
-  public ZOutputStream(OutputStream out) {
-    super();
-    this.out=out;
-    z.inflateInit();
-    compress=false;
-  }
-
-  public ZOutputStream(OutputStream out, int level) {
-    this(out, level, false);
-  }
-  public ZOutputStream(OutputStream out, int level, boolean nowrap) {
-    super();
-    this.out=out;
-    z.deflateInit(level, nowrap);
-    compress=true;
-  }
-
-  public void write(int b) throws IOException {
-    buf1[0]=(byte)b;
-    write(buf1, 0, 1);
-  }
-
-  public void write(byte b[], int off, int len) throws IOException {
-    if(len==0)
-      return;
-    int err;
-    z.next_in=b;
-    z.next_in_index=off;
-    z.avail_in=len;
-    do{
-      z.next_out=buf;
-      z.next_out_index=0;
-      z.avail_out=bufsize;
-      if(compress)
-        err=z.deflate(flush);
-      else
-        err=z.inflate(flush);
-      if(err!=JZlib.Z_OK)
-        throw new ZStreamException((compress?"de":"in")+"flating: "+z.msg);
-      out.write(buf, 0, bufsize-z.avail_out);
-    } 
-    while(z.avail_in>0 || z.avail_out==0);
-  }
-
-  public int getFlushMode() {
-    return(flush);
-  }
-
-  public void setFlushMode(int flush) {
-    this.flush=flush;
-  }
-
-  public void finish() throws IOException {
-    int err;
-    do{
-      z.next_out=buf;
-      z.next_out_index=0;
-      z.avail_out=bufsize;
-      if(compress){ err=z.deflate(JZlib.Z_FINISH);  }
-      else{ err=z.inflate(JZlib.Z_FINISH); }
-      if(err!=JZlib.Z_STREAM_END && err != JZlib.Z_OK)
-      throw new ZStreamException((compress?"de":"in")+"flating: "+z.msg);
-      if(bufsize-z.avail_out>0){
-	out.write(buf, 0, bufsize-z.avail_out);
-      }
-    }
-    while(z.avail_in>0 || z.avail_out==0);
-    flush();
-  }
-  public void end() {
-    if(z==null)
-      return;
-    if(compress){ z.deflateEnd(); }
-    else{ z.inflateEnd(); }
-    z.free();
-    z=null;
-  }
-  public void close() throws IOException {
-    try{
-      try{finish();}
-      catch (IOException ignored) {}
-    }
-    finally{
-      end();
-      out.close();
-      out=null;
-    }
-  }
-
-  /**
-   * Returns the total number of bytes input so far.
-   */
-  public long getTotalIn() {
-    return z.total_in;
-  }
-
-  /**
-   * Returns the total number of bytes output so far.
-   */
-  public long getTotalOut() {
-    return z.total_out;
-  }
-
-  public void flush() throws IOException {
-    out.flush();
-  }
-
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/ZStream.java b/app/src/main/java/com/jcraft/jzlib/ZStream.java
deleted file mode 100644
index 334475e..0000000
--- a/app/src/main/java/com/jcraft/jzlib/ZStream.java
+++ /dev/null
@@ -1,211 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-final public class ZStream{
-
-  static final private int MAX_WBITS=15;        // 32K LZ77 window
-  static final private int DEF_WBITS=MAX_WBITS;
-
-  static final private int Z_NO_FLUSH=0;
-  static final private int Z_PARTIAL_FLUSH=1;
-  static final private int Z_SYNC_FLUSH=2;
-  static final private int Z_FULL_FLUSH=3;
-  static final private int Z_FINISH=4;
-
-  static final private int MAX_MEM_LEVEL=9;
-
-  static final private int Z_OK=0;
-  static final private int Z_STREAM_END=1;
-  static final private int Z_NEED_DICT=2;
-  static final private int Z_ERRNO=-1;
-  static final private int Z_STREAM_ERROR=-2;
-  static final private int Z_DATA_ERROR=-3;
-  static final private int Z_MEM_ERROR=-4;
-  static final private int Z_BUF_ERROR=-5;
-  static final private int Z_VERSION_ERROR=-6;
-
-  public byte[] next_in;     // next input byte
-  public int next_in_index;
-  public int avail_in;       // number of bytes available at next_in
-  public long total_in;      // total nb of input bytes read so far
-
-  public byte[] next_out;    // next output byte should be put there
-  public int next_out_index;
-  public int avail_out;      // remaining free space at next_out
-  public long total_out;     // total nb of bytes output so far
-
-  public String msg;
-
-  Deflate dstate; 
-  Inflate istate; 
-
-  int data_type; // best guess about the data type: ascii or binary
-
-  public long adler;
-  Adler32 _adler=new Adler32();
-
-  public int inflateInit(){
-    return inflateInit(DEF_WBITS);
-  }
-  public int inflateInit(boolean nowrap){
-    return inflateInit(DEF_WBITS, nowrap);
-  }
-  public int inflateInit(int w){
-    return inflateInit(w, false);
-  }
-
-  public int inflateInit(int w, boolean nowrap){
-    istate=new Inflate();
-    return istate.inflateInit(this, nowrap?-w:w);
-  }
-
-  public int inflate(int f){
-    if(istate==null) return Z_STREAM_ERROR;
-    return istate.inflate(this, f);
-  }
-  public int inflateEnd(){
-    if(istate==null) return Z_STREAM_ERROR;
-    int ret=istate.inflateEnd(this);
-    istate = null;
-    return ret;
-  }
-  public int inflateSync(){
-    if(istate == null)
-      return Z_STREAM_ERROR;
-    return istate.inflateSync(this);
-  }
-  public int inflateSetDictionary(byte[] dictionary, int dictLength){
-    if(istate == null)
-      return Z_STREAM_ERROR;
-    return istate.inflateSetDictionary(this, dictionary, dictLength);
-  }
-
-  public int deflateInit(int level){
-    return deflateInit(level, MAX_WBITS);
-  }
-  public int deflateInit(int level, boolean nowrap){
-    return deflateInit(level, MAX_WBITS, nowrap);
-  }
-  public int deflateInit(int level, int bits){
-    return deflateInit(level, bits, false);
-  }
-  public int deflateInit(int level, int bits, boolean nowrap){
-    dstate=new Deflate();
-    return dstate.deflateInit(this, level, nowrap?-bits:bits);
-  }
-  public int deflate(int flush){
-    if(dstate==null){
-      return Z_STREAM_ERROR;
-    }
-    return dstate.deflate(this, flush);
-  }
-  public int deflateEnd(){
-    if(dstate==null) return Z_STREAM_ERROR;
-    int ret=dstate.deflateEnd();
-    dstate=null;
-    return ret;
-  }
-  public int deflateParams(int level, int strategy){
-    if(dstate==null) return Z_STREAM_ERROR;
-    return dstate.deflateParams(this, level, strategy);
-  }
-  public int deflateSetDictionary (byte[] dictionary, int dictLength){
-    if(dstate == null)
-      return Z_STREAM_ERROR;
-    return dstate.deflateSetDictionary(this, dictionary, dictLength);
-  }
-
-  // Flush as much pending output as possible. All deflate() output goes
-  // through this function so some applications may wish to modify it
-  // to avoid allocating a large strm->next_out buffer and copying into it.
-  // (See also read_buf()).
-  void flush_pending(){
-    int len=dstate.pending;
-
-    if(len>avail_out) len=avail_out;
-    if(len==0) return;
-
-    if(dstate.pending_buf.length<=dstate.pending_out ||
-       next_out.length<=next_out_index ||
-       dstate.pending_buf.length<(dstate.pending_out+len) ||
-       next_out.length<(next_out_index+len)){
-      System.out.println(dstate.pending_buf.length+", "+dstate.pending_out+
-			 ", "+next_out.length+", "+next_out_index+", "+len);
-      System.out.println("avail_out="+avail_out);
-    }
-
-    System.arraycopy(dstate.pending_buf, dstate.pending_out,
-		     next_out, next_out_index, len);
-
-    next_out_index+=len;
-    dstate.pending_out+=len;
-    total_out+=len;
-    avail_out-=len;
-    dstate.pending-=len;
-    if(dstate.pending==0){
-      dstate.pending_out=0;
-    }
-  }
-
-  // Read a new buffer from the current input stream, update the adler32
-  // and total number of bytes read.  All deflate() input goes through
-  // this function so some applications may wish to modify it to avoid
-  // allocating a large strm->next_in buffer and copying from it.
-  // (See also flush_pending()).
-  int read_buf(byte[] buf, int start, int size) {
-    int len=avail_in;
-
-    if(len>size) len=size;
-    if(len==0) return 0;
-
-    avail_in-=len;
-
-    if(dstate.noheader==0) {
-      adler=_adler.adler32(adler, next_in, next_in_index, len);
-    }
-    System.arraycopy(next_in, next_in_index, buf, start, len);
-    next_in_index  += len;
-    total_in += len;
-    return len;
-  }
-
-  public void free(){
-    next_in=null;
-    next_out=null;
-    msg=null;
-    _adler=null;
-  }
-}
diff --git a/app/src/main/java/com/jcraft/jzlib/ZStreamException.java b/app/src/main/java/com/jcraft/jzlib/ZStreamException.java
deleted file mode 100644
index 308bb8a..0000000
--- a/app/src/main/java/com/jcraft/jzlib/ZStreamException.java
+++ /dev/null
@@ -1,44 +0,0 @@
-/* -*-mode:java; c-basic-offset:2; -*- */
-/*
-Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-  1. Redistributions of source code must retain the above copyright notice,
-     this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright 
-     notice, this list of conditions and the following disclaimer in 
-     the documentation and/or other materials provided with the distribution.
-
-  3. The names of the authors may not be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
-INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
-INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-/*
- * This program is based on zlib-1.1.3, so all credit should go authors
- * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
- * and contributors of zlib.
- */
-
-package com.jcraft.jzlib;
-
-public class ZStreamException extends java.io.IOException {
-  public ZStreamException() {
-    super();
-  }
-  public ZStreamException(String s) {
-    super(s);
-  }
-}
diff --git a/app/src/main/java/com/trilead/ssh2/AuthAgentCallback.java b/app/src/main/java/com/trilead/ssh2/AuthAgentCallback.java
deleted file mode 100644
index 7fe270b..0000000
--- a/app/src/main/java/com/trilead/ssh2/AuthAgentCallback.java
+++ /dev/null
@@ -1,64 +0,0 @@
-package com.trilead.ssh2;
-
-import java.security.KeyPair;
-import java.util.Map;
-
-/**
- * AuthAgentCallback.
- *
- * @author Kenny Root
- * @version $Id$
- */
-public interface AuthAgentCallback {
-
-	/**
-	 * @return array of blobs containing the OpenSSH-format encoded public keys
-	 */
-	Map<String,byte[]> retrieveIdentities();
-
-	/**
-	 * @param key A <code>RSAPrivateKey</code> or <code>DSAPrivateKey</code>
-	 *            containing a DSA or RSA private key of
-	 *            the user in Trilead object format.
-	 * @param comment comment associated with this key
-	 * @param confirmUse whether to prompt before using this key
-	 * @param lifetime lifetime in seconds for key to be remembered
-	 * @return success or failure
-	 */
-	boolean addIdentity(KeyPair pair, String comment, boolean confirmUse, int lifetime);
-
-	/**
-	 * @param publicKey byte blob containing the OpenSSH-format encoded public key
-	 * @return success or failure
-	 */
-	boolean removeIdentity(byte[] publicKey);
-
-	/**
-	 * @return success or failure
-	 */
-	boolean removeAllIdentities();
-
-	/**
-	 * @param publicKey byte blob containing the OpenSSH-format encoded public key
-	 * @return A <code>RSAPrivateKey</code> or <code>DSAPrivateKey</code>
-	 *         containing a DSA or RSA private key of
-	 *         the user in Trilead object format.
-	 */
-	KeyPair getKeyPair(byte[] publicKey);
-
-	/**
-	 * @return
-	 */
-	boolean isAgentLocked();
-
-	/**
-	 * @param lockPassphrase
-	 */
-	boolean setAgentLock(String lockPassphrase);
-
-	/**
-	 * @param unlockPassphrase
-	 * @return
-	 */
-	boolean requestAgentUnlock(String unlockPassphrase);
-}
diff --git a/app/src/main/java/com/trilead/ssh2/ChannelCondition.java b/app/src/main/java/com/trilead/ssh2/ChannelCondition.java
deleted file mode 100644
index df1ad50..0000000
--- a/app/src/main/java/com/trilead/ssh2/ChannelCondition.java
+++ /dev/null
@@ -1,61 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * Contains constants that can be used to specify what conditions to wait for on
- * a SSH-2 channel (e.g., represented by a {@link Session}).
- *
- * @see Session#waitForCondition(int, long)
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ChannelCondition.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public abstract interface ChannelCondition
-{
-	/**
-	 * A timeout has occurred, none of your requested conditions is fulfilled.
-	 * However, other conditions may be true - therefore, NEVER use the "=="
-	 * operator to test for this (or any other) condition. Always use
-	 * something like <code>((cond & ChannelCondition.CLOSED) != 0)</code>.
-	 */
-	public static final int TIMEOUT = 1;
-
-	/**
-	 * The underlying SSH-2 channel, however not necessarily the whole connection,
-	 * has been closed. This implies <code>EOF</code>. Note that there may still
-	 * be unread stdout or stderr data in the local window, i.e, <code>STDOUT_DATA</code>
-	 * or/and <code>STDERR_DATA</code> may be set at the same time.
-	 */
-	public static final int CLOSED = 2;
-
-	/**
-	 * There is stdout data available that is ready to be consumed.
-	 */
-	public static final int STDOUT_DATA = 4;
-
-	/**
-	 * There is stderr data available that is ready to be consumed.
-	 */
-	public static final int STDERR_DATA = 8;
-
-	/**
-	 * EOF on has been reached, no more _new_ stdout or stderr data will arrive
-	 * from the remote server. However, there may be unread stdout or stderr
-	 * data, i.e, <code>STDOUT_DATA</code> or/and <code>STDERR_DATA</code>
-	 * may be set at the same time.
-	 */
-	public static final int EOF = 16;
-
-	/**
-	 * The exit status of the remote process is available.
-	 * Some servers never send the exist status, or occasionally "forget" to do so.
-	 */
-	public static final int EXIT_STATUS = 32;
-
-	/**
-	 * The exit signal of the remote process is available.
-	 */
-	public static final int EXIT_SIGNAL = 64;
-
-}
diff --git a/app/src/main/java/com/trilead/ssh2/Connection.java b/app/src/main/java/com/trilead/ssh2/Connection.java
deleted file mode 100644
index 163fdb5..0000000
--- a/app/src/main/java/com/trilead/ssh2/Connection.java
+++ /dev/null
@@ -1,1628 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.CharArrayWriter;
-import java.io.File;
-import java.io.FileReader;
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.SocketTimeoutException;
-import java.security.KeyPair;
-import java.security.SecureRandom;
-import java.security.Security;
-import java.util.Set;
-import java.util.Vector;
-
-import com.trilead.ssh2.auth.AuthenticationManager;
-import com.trilead.ssh2.channel.ChannelManager;
-import com.trilead.ssh2.crypto.CryptoWishList;
-import com.trilead.ssh2.crypto.cipher.BlockCipherFactory;
-import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.PacketIgnore;
-import com.trilead.ssh2.transport.KexManager;
-import com.trilead.ssh2.transport.TransportManager;
-import com.trilead.ssh2.util.TimeoutService;
-import com.trilead.ssh2.util.TimeoutService.TimeoutToken;
-
-/**
- * A <code>Connection</code> is used to establish an encrypted TCP/IP
- * connection to a SSH-2 server.
- * <p>
- * Typically, one
- * <ol>
- * <li>creates a {@link #Connection(String) Connection} object.</li>
- * <li>calls the {@link #connect() connect()} method.</li>
- * <li>calls some of the authentication methods (e.g.,
- * {@link #authenticateWithPublicKey(String, File, String) authenticateWithPublicKey()}).</li>
- * <li>calls one or several times the {@link #openSession() openSession()}
- * method.</li>
- * <li>finally, one must close the connection and release resources with the
- * {@link #close() close()} method.</li>
- * </ol>
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Connection.java,v 1.3 2008/04/01 12:38:09 cplattne Exp $
- */
-
-public class Connection
-{
-	/**
-	 * The identifier presented to the SSH-2 server.
-	 */
-	public final static String identification = "TrileadSSH2Java_213";
-
-	/**
-	 * Will be used to generate all random data needed for the current
-	 * connection. Note: SecureRandom.nextBytes() is thread safe.
-	 */
-	private SecureRandom generator;
-
-	/**
-	 * Unless you know what you are doing, you will never need this.
-	 * 
-	 * @return The list of supported cipher algorithms by this implementation.
-	 */
-	public static synchronized String[] getAvailableCiphers()
-	{
-		return BlockCipherFactory.getDefaultCipherList();
-	}
-
-	/**
-	 * Unless you know what you are doing, you will never need this.
-	 * 
-	 * @return The list of supported MAC algorthims by this implementation.
-	 */
-	public static synchronized String[] getAvailableMACs()
-	{
-		return MAC.getMacList();
-	}
-
-	/**
-	 * Unless you know what you are doing, you will never need this.
-	 * 
-	 * @return The list of supported server host key algorthims by this
-	 *         implementation.
-	 */
-	public static synchronized String[] getAvailableServerHostKeyAlgorithms()
-	{
-		return KexManager.getDefaultServerHostkeyAlgorithmList();
-	}
-
-	private AuthenticationManager am;
-
-	private boolean authenticated = false;
-	private boolean compression = false;
-	private ChannelManager cm;
-
-	private CryptoWishList cryptoWishList = new CryptoWishList();
-
-	private DHGexParameters dhgexpara = new DHGexParameters();
-
-	private final String hostname;
-
-	private final int port;
-
-	private TransportManager tm;
-
-	private boolean tcpNoDelay = false;
-
-	private ProxyData proxyData = null;
-
-	private Vector<ConnectionMonitor> connectionMonitors = new Vector<ConnectionMonitor>();
-
-	/**
-	 * Prepares a fresh <code>Connection</code> object which can then be used
-	 * to establish a connection to the specified SSH-2 server.
-	 * <p>
-	 * Same as {@link #Connection(String, int) Connection(hostname, 22)}.
-	 * 
-	 * @param hostname
-	 *            the hostname of the SSH-2 server.
-	 */
-	public Connection(String hostname)
-	{
-		this(hostname, 22);
-	}
-
-	/**
-	 * Prepares a fresh <code>Connection</code> object which can then be used
-	 * to establish a connection to the specified SSH-2 server.
-	 * 
-	 * @param hostname
-	 *            the host where we later want to connect to.
-	 * @param port
-	 *            port on the server, normally 22.
-	 */
-	public Connection(String hostname, int port)
-	{
-		this.hostname = hostname;
-		this.port = port;
-	}
-
-	/**
-	 * After a successful connect, one has to authenticate oneself. This method
-	 * is based on DSA (it uses DSA to sign a challenge sent by the server).
-	 * <p>
-	 * If the authentication phase is complete, <code>true</code> will be
-	 * returned. If the server does not accept the request (or if further
-	 * authentication steps are needed), <code>false</code> is returned and
-	 * one can retry either by using this or any other authentication method
-	 * (use the <code>getRemainingAuthMethods</code> method to get a list of
-	 * the remaining possible methods).
-	 * 
-	 * @param user
-	 *            A <code>String</code> holding the username.
-	 * @param pem
-	 *            A <code>String</code> containing the DSA private key of the
-	 *            user in OpenSSH key format (PEM, you can't miss the
-	 *            "-----BEGIN DSA PRIVATE KEY-----" tag). The string may contain
-	 *            linefeeds.
-	 * @param password
-	 *            If the PEM string is 3DES encrypted ("DES-EDE3-CBC"), then you
-	 *            must specify the password. Otherwise, this argument will be
-	 *            ignored and can be set to <code>null</code>.
-	 * 
-	 * @return whether the connection is now authenticated.
-	 * @throws IOException
-	 * 
-	 * @deprecated You should use one of the
-	 *             {@link #authenticateWithPublicKey(String, File, String) authenticateWithPublicKey()}
-	 *             methods, this method is just a wrapper for it and will
-	 *             disappear in future builds.
-	 * 
-	 */
-	public synchronized boolean authenticateWithDSA(String user, String pem, String password) throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Connection is not established!");
-
-		if (authenticated)
-			throw new IllegalStateException("Connection is already authenticated!");
-
-		if (am == null)
-			am = new AuthenticationManager(tm);
-
-		if (cm == null)
-			cm = new ChannelManager(tm);
-
-		if (user == null)
-			throw new IllegalArgumentException("user argument is null");
-
-		if (pem == null)
-			throw new IllegalArgumentException("pem argument is null");
-
-		authenticated = am.authenticatePublicKey(user, pem.toCharArray(), password, getOrCreateSecureRND());
-
-		return authenticated;
-	}
-
-	/**
-	 * A wrapper that calls
-	 * {@link #authenticateWithKeyboardInteractive(String, String[], InteractiveCallback)
-	 * authenticateWithKeyboardInteractivewith} a <code>null</code> submethod
-	 * list.
-	 * 
-	 * @param user
-	 *            A <code>String</code> holding the username.
-	 * @param cb
-	 *            An <code>InteractiveCallback</code> which will be used to
-	 *            determine the responses to the questions asked by the server.
-	 * @return whether the connection is now authenticated.
-	 * @throws IOException
-	 */
-	public synchronized boolean authenticateWithKeyboardInteractive(String user, InteractiveCallback cb)
-			throws IOException
-	{
-		return authenticateWithKeyboardInteractive(user, null, cb);
-	}
-
-	/**
-	 * After a successful connect, one has to authenticate oneself. This method
-	 * is based on "keyboard-interactive", specified in
-	 * draft-ietf-secsh-auth-kbdinteract-XX. Basically, you have to define a
-	 * callback object which will be feeded with challenges generated by the
-	 * server. Answers are then sent back to the server. It is possible that the
-	 * callback will be called several times during the invocation of this
-	 * method (e.g., if the server replies to the callback's answer(s) with
-	 * another challenge...)
-	 * <p>
-	 * If the authentication phase is complete, <code>true</code> will be
-	 * returned. If the server does not accept the request (or if further
-	 * authentication steps are needed), <code>false</code> is returned and
-	 * one can retry either by using this or any other authentication method
-	 * (use the <code>getRemainingAuthMethods</code> method to get a list of
-	 * the remaining possible methods).
-	 * <p>
-	 * Note: some SSH servers advertise "keyboard-interactive", however, any
-	 * interactive request will be denied (without having sent any challenge to
-	 * the client).
-	 * 
-	 * @param user
-	 *            A <code>String</code> holding the username.
-	 * @param submethods
-	 *            An array of submethod names, see
-	 *            draft-ietf-secsh-auth-kbdinteract-XX. May be <code>null</code>
-	 *            to indicate an empty list.
-	 * @param cb
-	 *            An <code>InteractiveCallback</code> which will be used to
-	 *            determine the responses to the questions asked by the server.
-	 * 
-	 * @return whether the connection is now authenticated.
-	 * @throws IOException
-	 */
-	public synchronized boolean authenticateWithKeyboardInteractive(String user, String[] submethods,
-			InteractiveCallback cb) throws IOException
-	{
-		if (cb == null)
-			throw new IllegalArgumentException("Callback may not ne NULL!");
-
-		if (tm == null)
-			throw new IllegalStateException("Connection is not established!");
-
-		if (authenticated)
-			throw new IllegalStateException("Connection is already authenticated!");
-
-		if (am == null)
-			am = new AuthenticationManager(tm);
-
-		if (cm == null)
-			cm = new ChannelManager(tm);
-
-		if (user == null)
-			throw new IllegalArgumentException("user argument is null");
-
-		authenticated = am.authenticateInteractive(user, submethods, cb);
-
-		return authenticated;
-	}
-
-	/**
-	 * After a successful connect, one has to authenticate oneself. This method
-	 * sends username and password to the server.
-	 * <p>
-	 * If the authentication phase is complete, <code>true</code> will be
-	 * returned. If the server does not accept the request (or if further
-	 * authentication steps are needed), <code>false</code> is returned and
-	 * one can retry either by using this or any other authentication method
-	 * (use the <code>getRemainingAuthMethods</code> method to get a list of
-	 * the remaining possible methods).
-	 * <p>
-	 * Note: if this method fails, then please double-check that it is actually
-	 * offered by the server (use
-	 * {@link #getRemainingAuthMethods(String) getRemainingAuthMethods()}.
-	 * <p>
-	 * Often, password authentication is disabled, but users are not aware of
-	 * it. Many servers only offer "publickey" and "keyboard-interactive".
-	 * However, even though "keyboard-interactive" *feels* like password
-	 * authentication (e.g., when using the putty or openssh clients) it is
-	 * *not* the same mechanism.
-	 * 
-	 * @param user
-	 * @param password
-	 * @return if the connection is now authenticated.
-	 * @throws IOException
-	 */
-	public synchronized boolean authenticateWithPassword(String user, String password) throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Connection is not established!");
-
-		if (authenticated)
-			throw new IllegalStateException("Connection is already authenticated!");
-
-		if (am == null)
-			am = new AuthenticationManager(tm);
-
-		if (cm == null)
-			cm = new ChannelManager(tm);
-
-		if (user == null)
-			throw new IllegalArgumentException("user argument is null");
-
-		if (password == null)
-			throw new IllegalArgumentException("password argument is null");
-
-		authenticated = am.authenticatePassword(user, password);
-
-		return authenticated;
-	}
-
-	/**
-	 * After a successful connect, one has to authenticate oneself. This method
-	 * can be used to explicitly use the special "none" authentication method
-	 * (where only a username has to be specified).
-	 * <p>
-	 * Note 1: The "none" method may always be tried by clients, however as by
-	 * the specs, the server will not explicitly announce it. In other words,
-	 * the "none" token will never show up in the list returned by
-	 * {@link #getRemainingAuthMethods(String)}.
-	 * <p>
-	 * Note 2: no matter which one of the authenticateWithXXX() methods you
-	 * call, the library will always issue exactly one initial "none"
-	 * authentication request to retrieve the initially allowed list of
-	 * authentication methods by the server. Please read RFC 4252 for the
-	 * details.
-	 * <p>
-	 * If the authentication phase is complete, <code>true</code> will be
-	 * returned. If further authentication steps are needed, <code>false</code>
-	 * is returned and one can retry by any other authentication method (use the
-	 * <code>getRemainingAuthMethods</code> method to get a list of the
-	 * remaining possible methods).
-	 * 
-	 * @param user
-	 * @return if the connection is now authenticated.
-	 * @throws IOException
-	 */
-	public synchronized boolean authenticateWithNone(String user) throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Connection is not established!");
-
-		if (authenticated)
-			throw new IllegalStateException("Connection is already authenticated!");
-
-		if (am == null)
-			am = new AuthenticationManager(tm);
-
-		if (cm == null)
-			cm = new ChannelManager(tm);
-
-		if (user == null)
-			throw new IllegalArgumentException("user argument is null");
-
-		/* Trigger the sending of the PacketUserauthRequestNone packet */
-		/* (if not already done) */
-
-		authenticated = am.authenticateNone(user);
-
-		return authenticated;
-	}
-
-	/**
-	 * After a successful connect, one has to authenticate oneself. The
-	 * authentication method "publickey" works by signing a challenge sent by
-	 * the server. The signature is either DSA or RSA based - it just depends on
-	 * the type of private key you specify, either a DSA or RSA private key in
-	 * PEM format. And yes, this is may seem to be a little confusing, the
-	 * method is called "publickey" in the SSH-2 protocol specification, however
-	 * since we need to generate a signature, you actually have to supply a
-	 * private key =).
-	 * <p>
-	 * The private key contained in the PEM file may also be encrypted
-	 * ("Proc-Type: 4,ENCRYPTED"). The library supports DES-CBC and DES-EDE3-CBC
-	 * encryption, as well as the more exotic PEM encrpytions AES-128-CBC,
-	 * AES-192-CBC and AES-256-CBC.
-	 * <p>
-	 * If the authentication phase is complete, <code>true</code> will be
-	 * returned. If the server does not accept the request (or if further
-	 * authentication steps are needed), <code>false</code> is returned and
-	 * one can retry either by using this or any other authentication method
-	 * (use the <code>getRemainingAuthMethods</code> method to get a list of
-	 * the remaining possible methods).
-	 * <p>
-	 * NOTE PUTTY USERS: Event though your key file may start with
-	 * "-----BEGIN..." it is not in the expected format. You have to convert it
-	 * to the OpenSSH key format by using the "puttygen" tool (can be downloaded
-	 * from the Putty website). Simply load your key and then use the
-	 * "Conversions/Export OpenSSH key" functionality to get a proper PEM file.
-	 * 
-	 * @param user
-	 *            A <code>String</code> holding the username.
-	 * @param pemPrivateKey
-	 *            A <code>char[]</code> containing a DSA or RSA private key of
-	 *            the user in OpenSSH key format (PEM, you can't miss the
-	 *            "-----BEGIN DSA PRIVATE KEY-----" or "-----BEGIN RSA PRIVATE
-	 *            KEY-----" tag). The char array may contain
-	 *            linebreaks/linefeeds.
-	 * @param password
-	 *            If the PEM structure is encrypted ("Proc-Type: 4,ENCRYPTED")
-	 *            then you must specify a password. Otherwise, this argument
-	 *            will be ignored and can be set to <code>null</code>.
-	 * 
-	 * @return whether the connection is now authenticated.
-	 * @throws IOException
-	 */
-	public synchronized boolean authenticateWithPublicKey(String user, char[] pemPrivateKey, String password)
-			throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Connection is not established!");
-
-		if (authenticated)
-			throw new IllegalStateException("Connection is already authenticated!");
-
-		if (am == null)
-			am = new AuthenticationManager(tm);
-
-		if (cm == null)
-			cm = new ChannelManager(tm);
-
-		if (user == null)
-			throw new IllegalArgumentException("user argument is null");
-
-		if (pemPrivateKey == null)
-			throw new IllegalArgumentException("pemPrivateKey argument is null");
-
-		authenticated = am.authenticatePublicKey(user, pemPrivateKey, password, getOrCreateSecureRND());
-
-		return authenticated;
-	}
-	
-	/**
-	 * After a successful connect, one has to authenticate oneself. The
-	 * authentication method "publickey" works by signing a challenge sent by
-	 * the server. The signature is either DSA or RSA based - it just depends on
-	 * the type of private key you specify, either a DSA or RSA private key in
-	 * PEM format. And yes, this is may seem to be a little confusing, the
-	 * method is called "publickey" in the SSH-2 protocol specification, however
-	 * since we need to generate a signature, you actually have to supply a
-	 * private key =).
-	 * <p>
-	 * If the authentication phase is complete, <code>true</code> will be
-	 * returned. If the server does not accept the request (or if further
-	 * authentication steps are needed), <code>false</code> is returned and
-	 * one can retry either by using this or any other authentication method
-	 * (use the <code>getRemainingAuthMethods</code> method to get a list of
-	 * the remaining possible methods).
-	 * 
-	 * @param user
-	 *            A <code>String</code> holding the username.
-	 * @param key
-	 *            A <code>RSAPrivateKey</code> or <code>DSAPrivateKey</code>
-	 *            containing a DSA or RSA private key of
-	 *            the user in Trilead object format.
-	 * 
-	 * @return whether the connection is now authenticated.
-	 * @throws IOException
-	 */
-	public synchronized boolean authenticateWithPublicKey(String user, KeyPair pair)
-			throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Connection is not established!");
-
-		if (authenticated)
-			throw new IllegalStateException("Connection is already authenticated!");
-
-		if (am == null)
-			am = new AuthenticationManager(tm);
-
-		if (cm == null)
-			cm = new ChannelManager(tm);
-
-		if (user == null)
-			throw new IllegalArgumentException("user argument is null");
-
-		if (pair == null)
-			throw new IllegalArgumentException("Key pair argument is null");
-
-		authenticated = am.authenticatePublicKey(user, pair, getOrCreateSecureRND());
-
-		return authenticated;
-	}
-	/**
-	 * A convenience wrapper function which reads in a private key (PEM format,
-	 * either DSA or RSA) and then calls
-	 * <code>authenticateWithPublicKey(String, char[], String)</code>.
-	 * <p>
-	 * NOTE PUTTY USERS: Event though your key file may start with
-	 * "-----BEGIN..." it is not in the expected format. You have to convert it
-	 * to the OpenSSH key format by using the "puttygen" tool (can be downloaded
-	 * from the Putty website). Simply load your key and then use the
-	 * "Conversions/Export OpenSSH key" functionality to get a proper PEM file.
-	 * 
-	 * @param user
-	 *            A <code>String</code> holding the username.
-	 * @param pemFile
-	 *            A <code>File</code> object pointing to a file containing a
-	 *            DSA or RSA private key of the user in OpenSSH key format (PEM,
-	 *            you can't miss the "-----BEGIN DSA PRIVATE KEY-----" or
-	 *            "-----BEGIN RSA PRIVATE KEY-----" tag).
-	 * @param password
-	 *            If the PEM file is encrypted then you must specify the
-	 *            password. Otherwise, this argument will be ignored and can be
-	 *            set to <code>null</code>.
-	 * 
-	 * @return whether the connection is now authenticated.
-	 * @throws IOException
-	 */
-	public synchronized boolean authenticateWithPublicKey(String user, File pemFile, String password)
-			throws IOException
-	{
-		if (pemFile == null)
-			throw new IllegalArgumentException("pemFile argument is null");
-
-		char[] buff = new char[256];
-
-		CharArrayWriter cw = new CharArrayWriter();
-
-		FileReader fr = new FileReader(pemFile);
-
-		while (true)
-		{
-			int len = fr.read(buff);
-			if (len < 0)
-				break;
-			cw.write(buff, 0, len);
-		}
-
-		fr.close();
-
-		return authenticateWithPublicKey(user, cw.toCharArray(), password);
-	}
-
-	/**
-	 * Add a {@link ConnectionMonitor} to this connection. Can be invoked at any
-	 * time, but it is best to add connection monitors before invoking
-	 * <code>connect()</code> to avoid glitches (e.g., you add a connection
-	 * monitor after a successful connect(), but the connection has died in the
-	 * mean time. Then, your connection monitor won't be notified.)
-	 * <p>
-	 * You can add as many monitors as you like.
-	 * 
-	 * @see ConnectionMonitor
-	 * 
-	 * @param cmon
-	 *            An object implementing the <code>ConnectionMonitor</code>
-	 *            interface.
-	 */
-	public synchronized void addConnectionMonitor(ConnectionMonitor cmon)
-	{
-		if (cmon == null)
-			throw new IllegalArgumentException("cmon argument is null");
-
-		connectionMonitors.addElement(cmon);
-
-		if (tm != null)
-			tm.setConnectionMonitors(connectionMonitors);
-	}
-
-	/**
-	 * Controls whether compression is used on the link or not.
-	 * <p>
-	 * Note: This can only be called before connect()
-	 * @param enabled whether to enable compression
-	 * @throws IOException
-	 */
-	public synchronized void setCompression(boolean enabled) throws IOException {
-		if (tm != null)
-			throw new IOException("Connection to " + hostname + " is already in connected state!");
-		
-		compression = enabled;
-	}
-	
-	/**
-	 * Close the connection to the SSH-2 server. All assigned sessions will be
-	 * closed, too. Can be called at any time. Don't forget to call this once
-	 * you don't need a connection anymore - otherwise the receiver thread may
-	 * run forever.
-	 */
-	public synchronized void close()
-	{
-		Throwable t = new Throwable("Closed due to user request.");
-		close(t, false);
-	}
-
-	private void close(Throwable t, boolean hard)
-	{
-		if (cm != null)
-			cm.closeAllChannels();
-
-		if (tm != null)
-		{
-			tm.close(t, hard == false);
-			tm = null;
-		}
-		am = null;
-		cm = null;
-		authenticated = false;
-	}
-
-	/**
-	 * Same as
-	 * {@link #connect(ServerHostKeyVerifier, int, int) connect(null, 0, 0)}.
-	 * 
-	 * @return see comments for the
-	 *         {@link #connect(ServerHostKeyVerifier, int, int) connect(ServerHostKeyVerifier, int, int)}
-	 *         method.
-	 * @throws IOException
-	 */
-	public synchronized ConnectionInfo connect() throws IOException
-	{
-		return connect(null, 0, 0);
-	}
-
-	/**
-	 * Same as
-	 * {@link #connect(ServerHostKeyVerifier, int, int) connect(verifier, 0, 0)}.
-	 * 
-	 * @return see comments for the
-	 *         {@link #connect(ServerHostKeyVerifier, int, int) connect(ServerHostKeyVerifier, int, int)}
-	 *         method.
-	 * @throws IOException
-	 */
-	public synchronized ConnectionInfo connect(ServerHostKeyVerifier verifier) throws IOException
-	{
-		return connect(verifier, 0, 0);
-	}
-
-	/**
-	 * Connect to the SSH-2 server and, as soon as the server has presented its
-	 * host key, use the
-	 * {@link ServerHostKeyVerifier#verifyServerHostKey(String, int, String,
-	 * byte[]) ServerHostKeyVerifier.verifyServerHostKey()} method of the
-	 * <code>verifier</code> to ask for permission to proceed. If
-	 * <code>verifier</code> is <code>null</code>, then any host key will
-	 * be accepted - this is NOT recommended, since it makes man-in-the-middle
-	 * attackes VERY easy (somebody could put a proxy SSH server between you and
-	 * the real server).
-	 * <p>
-	 * Note: The verifier will be called before doing any crypto calculations
-	 * (i.e., diffie-hellman). Therefore, if you don't like the presented host
-	 * key then no CPU cycles are wasted (and the evil server has less
-	 * information about us).
-	 * <p>
-	 * However, it is still possible that the server presented a fake host key:
-	 * the server cheated (typically a sign for a man-in-the-middle attack) and
-	 * is not able to generate a signature that matches its host key. Don't
-	 * worry, the library will detect such a scenario later when checking the
-	 * signature (the signature cannot be checked before having completed the
-	 * diffie-hellman exchange).
-	 * <p>
-	 * Note 2: The {@link ServerHostKeyVerifier#verifyServerHostKey(String, int,
-	 * String, byte[]) ServerHostKeyVerifier.verifyServerHostKey()} method will
-	 * *NOT* be called from the current thread, the call is being made from a
-	 * background thread (there is a background dispatcher thread for every
-	 * established connection).
-	 * <p>
-	 * Note 3: This method will block as long as the key exchange of the
-	 * underlying connection has not been completed (and you have not specified
-	 * any timeouts).
-	 * <p>
-	 * Note 4: If you want to re-use a connection object that was successfully
-	 * connected, then you must call the {@link #close()} method before invoking
-	 * <code>connect()</code> again.
-	 * 
-	 * @param verifier
-	 *            An object that implements the {@link ServerHostKeyVerifier}
-	 *            interface. Pass <code>null</code> to accept any server host
-	 *            key - NOT recommended.
-	 * 
-	 * @param connectTimeout
-	 *            Connect the underlying TCP socket to the server with the given
-	 *            timeout value (non-negative, in milliseconds). Zero means no
-	 *            timeout. If a proxy is being used (see
-	 *            {@link #setProxyData(ProxyData)}), then this timeout is used
-	 *            for the connection establishment to the proxy.
-	 * 
-	 * @param kexTimeout
-	 *            Timeout for complete connection establishment (non-negative,
-	 *            in milliseconds). Zero means no timeout. The timeout counts
-	 *            from the moment you invoke the connect() method and is
-	 *            cancelled as soon as the first key-exchange round has
-	 *            finished. It is possible that the timeout event will be fired
-	 *            during the invocation of the <code>verifier</code> callback,
-	 *            but it will only have an effect after the
-	 *            <code>verifier</code> returns.
-	 * 
-	 * @return A {@link ConnectionInfo} object containing the details of the
-	 *         established connection.
-	 * 
-	 * @throws IOException
-	 *             If any problem occurs, e.g., the server's host key is not
-	 *             accepted by the <code>verifier</code> or there is problem
-	 *             during the initial crypto setup (e.g., the signature sent by
-	 *             the server is wrong).
-	 *             <p>
-	 *             In case of a timeout (either connectTimeout or kexTimeout) a
-	 *             SocketTimeoutException is thrown.
-	 *             <p>
-	 *             An exception may also be thrown if the connection was already
-	 *             successfully connected (no matter if the connection broke in
-	 *             the mean time) and you invoke <code>connect()</code> again
-	 *             without having called {@link #close()} first.
-	 *             <p>
-	 *             If a HTTP proxy is being used and the proxy refuses the
-	 *             connection, then a {@link HTTPProxyException} may be thrown,
-	 *             which contains the details returned by the proxy. If the
-	 *             proxy is buggy and does not return a proper HTTP response,
-	 *             then a normal IOException is thrown instead.
-	 */
-	public synchronized ConnectionInfo connect(ServerHostKeyVerifier verifier, int connectTimeout, int kexTimeout)
-			throws IOException
-	{
-		final class TimeoutState
-		{
-			boolean isCancelled = false;
-			boolean timeoutSocketClosed = false;
-		}
-
-		if (tm != null)
-			throw new IOException("Connection to " + hostname + " is already in connected state!");
-
-		if (connectTimeout < 0)
-			throw new IllegalArgumentException("connectTimeout must be non-negative!");
-
-		if (kexTimeout < 0)
-			throw new IllegalArgumentException("kexTimeout must be non-negative!");
-
-		final TimeoutState state = new TimeoutState();
-
-		tm = new TransportManager(hostname, port);
-
-		tm.setConnectionMonitors(connectionMonitors);
-
-		// Don't offer compression if not requested
-		if (!compression) {
-			cryptoWishList.c2s_comp_algos = new String[] { "none" };
-			cryptoWishList.s2c_comp_algos = new String[] { "none" };
-		}
-		
-		/*
-		 * Make sure that the runnable below will observe the new value of "tm"
-		 * and "state" (the runnable will be executed in a different thread,
-		 * which may be already running, that is why we need a memory barrier
-		 * here). See also the comment in Channel.java if you are interested in
-		 * the details.
-		 * 
-		 * OKOK, this is paranoid since adding the runnable to the todo list of
-		 * the TimeoutService will ensure that all writes have been flushed
-		 * before the Runnable reads anything (there is a synchronized block in
-		 * TimeoutService.addTimeoutHandler).
-		 */
-
-		synchronized (tm)
-		{
-			/* We could actually synchronize on anything. */
-		}
-
-		try
-		{
-			TimeoutToken token = null;
-
-			if (kexTimeout > 0)
-			{
-				final Runnable timeoutHandler = new Runnable()
-				{
-					public void run()
-					{
-						synchronized (state)
-						{
-							if (state.isCancelled)
-								return;
-							state.timeoutSocketClosed = true;
-							tm.close(new SocketTimeoutException("The connect timeout expired"), false);
-						}
-					}
-				};
-
-				long timeoutHorizont = System.currentTimeMillis() + kexTimeout;
-
-				token = TimeoutService.addTimeoutHandler(timeoutHorizont, timeoutHandler);
-			}
-
-			try
-			{
-				tm.initialize(cryptoWishList, verifier, dhgexpara, connectTimeout, getOrCreateSecureRND(), proxyData);
-			}
-			catch (SocketTimeoutException se)
-			{
-				throw (SocketTimeoutException) new SocketTimeoutException(
-						"The connect() operation on the socket timed out.").initCause(se);
-			}
-
-			tm.setTcpNoDelay(tcpNoDelay);
-
-			/* Wait until first KEX has finished */
-
-			ConnectionInfo ci = tm.getConnectionInfo(1);
-
-			/* Now try to cancel the timeout, if needed */
-
-			if (token != null)
-			{
-				TimeoutService.cancelTimeoutHandler(token);
-
-				/* Were we too late? */
-
-				synchronized (state)
-				{
-					if (state.timeoutSocketClosed)
-						throw new IOException("This exception will be replaced by the one below =)");
-					/*
-					 * Just in case the "cancelTimeoutHandler" invocation came
-					 * just a little bit too late but the handler did not enter
-					 * the semaphore yet - we can still stop it.
-					 */
-					state.isCancelled = true;
-				}
-			}
-
-			return ci;
-		}
-		catch (SocketTimeoutException ste)
-		{
-			throw ste;
-		}
-		catch (IOException e1)
-		{
-			/* This will also invoke any registered connection monitors */
-			close(new Throwable("There was a problem during connect."), false);
-
-			synchronized (state)
-			{
-				/*
-				 * Show a clean exception, not something like "the socket is
-				 * closed!?!"
-				 */
-				if (state.timeoutSocketClosed)
-					throw new SocketTimeoutException("The kexTimeout (" + kexTimeout + " ms) expired.");
-			}
-
-			/* Do not wrap a HTTPProxyException */
-			if (e1 instanceof HTTPProxyException)
-				throw e1;
-
-			throw (IOException) new IOException("There was a problem while connecting to " + hostname + ":" + port)
-					.initCause(e1);
-		}
-	}
-
-	/**
-	 * Creates a new {@link LocalPortForwarder}. A
-	 * <code>LocalPortForwarder</code> forwards TCP/IP connections that arrive
-	 * at a local port via the secure tunnel to another host (which may or may
-	 * not be identical to the remote SSH-2 server).
-	 * <p>
-	 * This method must only be called after one has passed successfully the
-	 * authentication step. There is no limit on the number of concurrent
-	 * forwardings.
-	 * 
-	 * @param local_port
-	 *            the local port the LocalPortForwarder shall bind to.
-	 * @param host_to_connect
-	 *            target address (IP or hostname)
-	 * @param port_to_connect
-	 *            target port
-	 * @return A {@link LocalPortForwarder} object.
-	 * @throws IOException
-	 */
-	public synchronized LocalPortForwarder createLocalPortForwarder(int local_port, String host_to_connect,
-			int port_to_connect) throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Cannot forward ports, you need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("Cannot forward ports, connection is not authenticated.");
-
-		return new LocalPortForwarder(cm, local_port, host_to_connect, port_to_connect);
-	}
-
-	/**
-	 * Creates a new {@link LocalPortForwarder}. A
-	 * <code>LocalPortForwarder</code> forwards TCP/IP connections that arrive
-	 * at a local port via the secure tunnel to another host (which may or may
-	 * not be identical to the remote SSH-2 server).
-	 * <p>
-	 * This method must only be called after one has passed successfully the
-	 * authentication step. There is no limit on the number of concurrent
-	 * forwardings.
-	 * 
-	 * @param addr
-	 *            specifies the InetSocketAddress where the local socket shall
-	 *            be bound to.
-	 * @param host_to_connect
-	 *            target address (IP or hostname)
-	 * @param port_to_connect
-	 *            target port
-	 * @return A {@link LocalPortForwarder} object.
-	 * @throws IOException
-	 */
-	public synchronized LocalPortForwarder createLocalPortForwarder(InetSocketAddress addr, String host_to_connect,
-			int port_to_connect) throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Cannot forward ports, you need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("Cannot forward ports, connection is not authenticated.");
-
-		return new LocalPortForwarder(cm, addr, host_to_connect, port_to_connect);
-	}
-
-	/**
-	 * Creates a new {@link LocalStreamForwarder}. A
-	 * <code>LocalStreamForwarder</code> manages an Input/Outputstream pair
-	 * that is being forwarded via the secure tunnel into a TCP/IP connection to
-	 * another host (which may or may not be identical to the remote SSH-2
-	 * server).
-	 * 
-	 * @param host_to_connect
-	 * @param port_to_connect
-	 * @return A {@link LocalStreamForwarder} object.
-	 * @throws IOException
-	 */
-	public synchronized LocalStreamForwarder createLocalStreamForwarder(String host_to_connect, int port_to_connect)
-			throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Cannot forward, you need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("Cannot forward, connection is not authenticated.");
-
-		return new LocalStreamForwarder(cm, host_to_connect, port_to_connect);
-	}
-
-	/**
-	 * Creates a new {@link DynamicPortForwarder}. A
-	 * <code>DynamicPortForwarder</code> forwards TCP/IP connections that arrive
-	 * at a local port via the secure tunnel to another host that is chosen via
-	 * the SOCKS protocol.
-	 * <p>
-	 * This method must only be called after one has passed successfully the
-	 * authentication step. There is no limit on the number of concurrent
-	 * forwardings.
-	 * 
-	 * @param local_port
-	 * @return A {@link DynamicPortForwarder} object.
-	 * @throws IOException
-	 */
-	public synchronized DynamicPortForwarder createDynamicPortForwarder(int local_port) throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Cannot forward ports, you need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("Cannot forward ports, connection is not authenticated.");
-
-		return new DynamicPortForwarder(cm, local_port);
-	}
-	
-	/**
-	 * Creates a new {@link DynamicPortForwarder}. A
-	 * <code>DynamicPortForwarder</code> forwards TCP/IP connections that arrive
-	 * at a local port via the secure tunnel to another host that is chosen via
-	 * the SOCKS protocol.
-	 * <p>
-	 * This method must only be called after one has passed successfully the
-	 * authentication step. There is no limit on the number of concurrent
-	 * forwardings.
-	 * 
-	 * @param addr
-	 *            specifies the InetSocketAddress where the local socket shall
-	 *            be bound to.
-	 * @return A {@link DynamicPortForwarder} object.
-	 * @throws IOException
-	 */
-	public synchronized DynamicPortForwarder createDynamicPortForwarder(InetSocketAddress addr) throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Cannot forward ports, you need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("Cannot forward ports, connection is not authenticated.");
-
-		return new DynamicPortForwarder(cm, addr);
-	}
-	
-	/**
-	 * Create a very basic {@link SCPClient} that can be used to copy files
-	 * from/to the SSH-2 server.
-	 * <p>
-	 * Works only after one has passed successfully the authentication step.
-	 * There is no limit on the number of concurrent SCP clients.
-	 * <p>
-	 * Note: This factory method will probably disappear in the future.
-	 * 
-	 * @return A {@link SCPClient} object.
-	 * @throws IOException
-	 */
-	public synchronized SCPClient createSCPClient() throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Cannot create SCP client, you need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("Cannot create SCP client, connection is not authenticated.");
-
-		return new SCPClient(this);
-	}
-
-	/**
-	 * Force an asynchronous key re-exchange (the call does not block). The
-	 * latest values set for MAC, Cipher and DH group exchange parameters will
-	 * be used. If a key exchange is currently in progress, then this method has
-	 * the only effect that the so far specified parameters will be used for the
-	 * next (server driven) key exchange.
-	 * <p>
-	 * Note: This implementation will never start a key exchange (other than the
-	 * initial one) unless you or the SSH-2 server ask for it.
-	 * 
-	 * @throws IOException
-	 *             In case of any failure behind the scenes.
-	 */
-	public synchronized void forceKeyExchange() throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("You need to establish a connection first.");
-
-		tm.forceKeyExchange(cryptoWishList, dhgexpara);
-	}
-
-	/**
-	 * Returns the hostname that was passed to the constructor.
-	 * 
-	 * @return the hostname
-	 */
-	public synchronized String getHostname()
-	{
-		return hostname;
-	}
-
-	/**
-	 * Returns the port that was passed to the constructor.
-	 * 
-	 * @return the TCP port
-	 */
-	public synchronized int getPort()
-	{
-		return port;
-	}
-
-	/**
-	 * Returns a {@link ConnectionInfo} object containing the details of the
-	 * connection. Can be called as soon as the connection has been established
-	 * (successfully connected).
-	 * 
-	 * @return A {@link ConnectionInfo} object.
-	 * @throws IOException
-	 *             In case of any failure behind the scenes.
-	 */
-	public synchronized ConnectionInfo getConnectionInfo() throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException(
-					"Cannot get details of connection, you need to establish a connection first.");
-		return tm.getConnectionInfo(1);
-	}
-
-	/**
-	 * After a successful connect, one has to authenticate oneself. This method
-	 * can be used to tell which authentication methods are supported by the
-	 * server at a certain stage of the authentication process (for the given
-	 * username).
-	 * <p>
-	 * Note 1: the username will only be used if no authentication step was done
-	 * so far (it will be used to ask the server for a list of possible
-	 * authentication methods by sending the initial "none" request). Otherwise,
-	 * this method ignores the user name and returns a cached method list (which
-	 * is based on the information contained in the last negative server
-	 * response).
-	 * <p>
-	 * Note 2: the server may return method names that are not supported by this
-	 * implementation.
-	 * <p>
-	 * After a successful authentication, this method must not be called
-	 * anymore.
-	 * 
-	 * @param user
-	 *            A <code>String</code> holding the username.
-	 * 
-	 * @return a (possibly emtpy) array holding authentication method names.
-	 * @throws IOException
-	 */
-	public synchronized String[] getRemainingAuthMethods(String user) throws IOException
-	{
-		if (user == null)
-			throw new IllegalArgumentException("user argument may not be NULL!");
-
-		if (tm == null)
-			throw new IllegalStateException("Connection is not established!");
-
-		if (authenticated)
-			throw new IllegalStateException("Connection is already authenticated!");
-
-		if (am == null)
-			am = new AuthenticationManager(tm);
-
-		if (cm == null)
-			cm = new ChannelManager(tm);
-
-		return am.getRemainingMethods(user);
-	}
-
-	/**
-	 * Determines if the authentication phase is complete. Can be called at any
-	 * time.
-	 * 
-	 * @return <code>true</code> if no further authentication steps are
-	 *         needed.
-	 */
-	public synchronized boolean isAuthenticationComplete()
-	{
-		return authenticated;
-	}
-
-	/**
-	 * Returns true if there was at least one failed authentication request and
-	 * the last failed authentication request was marked with "partial success"
-	 * by the server. This is only needed in the rare case of SSH-2 server
-	 * setups that cannot be satisfied with a single successful authentication
-	 * request (i.e., multiple authentication steps are needed.)
-	 * <p>
-	 * If you are interested in the details, then have a look at RFC4252.
-	 * 
-	 * @return if the there was a failed authentication step and the last one
-	 *         was marked as a "partial success".
-	 */
-	public synchronized boolean isAuthenticationPartialSuccess()
-	{
-		if (am == null)
-			return false;
-
-		return am.getPartialSuccess();
-	}
-
-	/**
-	 * Checks if a specified authentication method is available. This method is
-	 * actually just a wrapper for {@link #getRemainingAuthMethods(String)
-	 * getRemainingAuthMethods()}.
-	 * 
-	 * @param user
-	 *            A <code>String</code> holding the username.
-	 * @param method
-	 *            An authentication method name (e.g., "publickey", "password",
-	 *            "keyboard-interactive") as specified by the SSH-2 standard.
-	 * @return if the specified authentication method is currently available.
-	 * @throws IOException
-	 */
-	public synchronized boolean isAuthMethodAvailable(String user, String method) throws IOException
-	{
-		if (method == null)
-			throw new IllegalArgumentException("method argument may not be NULL!");
-
-		String methods[] = getRemainingAuthMethods(user);
-
-		for (int i = 0; i < methods.length; i++)
-		{
-			if (methods[i].compareTo(method) == 0)
-				return true;
-		}
-
-		return false;
-	}
-
-	private final SecureRandom getOrCreateSecureRND()
-	{
-		if (generator == null)
-			generator = new SecureRandom();
-
-		return generator;
-	}
-
-	/**
-	 * Open a new {@link Session} on this connection. Works only after one has
-	 * passed successfully the authentication step. There is no limit on the
-	 * number of concurrent sessions.
-	 * 
-	 * @return A {@link Session} object.
-	 * @throws IOException
-	 */
-	public synchronized Session openSession() throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("Cannot open session, you need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("Cannot open session, connection is not authenticated.");
-
-		return new Session(cm, getOrCreateSecureRND());
-	}
-
-	/**
-	 * Send an SSH_MSG_IGNORE packet. This method will generate a random data
-	 * attribute (length between 0 (invlusive) and 16 (exclusive) bytes,
-	 * contents are random bytes).
-	 * <p>
-	 * This method must only be called once the connection is established.
-	 * 
-	 * @throws IOException
-	 */
-	public synchronized void sendIgnorePacket() throws IOException
-	{
-		SecureRandom rnd = getOrCreateSecureRND();
-
-		byte[] data = new byte[rnd.nextInt(16)];
-		rnd.nextBytes(data);
-
-		sendIgnorePacket(data);
-	}
-
-	/**
-	 * Send an SSH_MSG_IGNORE packet with the given data attribute.
-	 * <p>
-	 * This method must only be called once the connection is established.
-	 * 
-	 * @throws IOException
-	 */
-	public synchronized void sendIgnorePacket(byte[] data) throws IOException
-	{
-		if (data == null)
-			throw new IllegalArgumentException("data argument must not be null.");
-
-		if (tm == null)
-			throw new IllegalStateException(
-					"Cannot send SSH_MSG_IGNORE packet, you need to establish a connection first.");
-
-		PacketIgnore pi = new PacketIgnore();
-		pi.setData(data);
-
-		tm.sendMessage(pi.getPayload());
-	}
-
-	/**
-	 * Removes duplicates from a String array, keeps only first occurence of
-	 * each element. Does not destroy order of elements; can handle nulls. Uses
-	 * a very efficient O(N^2) algorithm =)
-	 * 
-	 * @param list
-	 *            a String array.
-	 * @return a cleaned String array.
-	 */
-	private String[] removeDuplicates(String[] list)
-	{
-		if ((list == null) || (list.length < 2))
-			return list;
-
-		String[] list2 = new String[list.length];
-
-		int count = 0;
-
-		for (int i = 0; i < list.length; i++)
-		{
-			boolean duplicate = false;
-
-			String element = list[i];
-
-			for (int j = 0; j < count; j++)
-			{
-				if (((element == null) && (list2[j] == null)) || ((element != null) && (element.equals(list2[j]))))
-				{
-					duplicate = true;
-					break;
-				}
-			}
-
-			if (duplicate)
-				continue;
-
-			list2[count++] = list[i];
-		}
-
-		if (count == list2.length)
-			return list2;
-
-		String[] tmp = new String[count];
-		System.arraycopy(list2, 0, tmp, 0, count);
-
-		return tmp;
-	}
-
-	/**
-	 * Unless you know what you are doing, you will never need this.
-	 * 
-	 * @param ciphers
-	 */
-	public synchronized void setClient2ServerCiphers(String[] ciphers)
-	{
-		if ((ciphers == null) || (ciphers.length == 0))
-			throw new IllegalArgumentException();
-		ciphers = removeDuplicates(ciphers);
-		BlockCipherFactory.checkCipherList(ciphers);
-		cryptoWishList.c2s_enc_algos = ciphers;
-	}
-
-	/**
-	 * Unless you know what you are doing, you will never need this.
-	 * 
-	 * @param macs
-	 */
-	public synchronized void setClient2ServerMACs(String[] macs)
-	{
-		if ((macs == null) || (macs.length == 0))
-			throw new IllegalArgumentException();
-		macs = removeDuplicates(macs);
-		MAC.checkMacList(macs);
-		cryptoWishList.c2s_mac_algos = macs;
-	}
-
-	/**
-	 * Sets the parameters for the diffie-hellman group exchange. Unless you
-	 * know what you are doing, you will never need this. Default values are
-	 * defined in the {@link DHGexParameters} class.
-	 * 
-	 * @param dgp
-	 *            {@link DHGexParameters}, non null.
-	 * 
-	 */
-	public synchronized void setDHGexParameters(DHGexParameters dgp)
-	{
-		if (dgp == null)
-			throw new IllegalArgumentException();
-
-		dhgexpara = dgp;
-	}
-
-	/**
-	 * Unless you know what you are doing, you will never need this.
-	 * 
-	 * @param ciphers
-	 */
-	public synchronized void setServer2ClientCiphers(String[] ciphers)
-	{
-		if ((ciphers == null) || (ciphers.length == 0))
-			throw new IllegalArgumentException();
-		ciphers = removeDuplicates(ciphers);
-		BlockCipherFactory.checkCipherList(ciphers);
-		cryptoWishList.s2c_enc_algos = ciphers;
-	}
-
-	/**
-	 * Unless you know what you are doing, you will never need this.
-	 * 
-	 * @param macs
-	 */
-	public synchronized void setServer2ClientMACs(String[] macs)
-	{
-		if ((macs == null) || (macs.length == 0))
-			throw new IllegalArgumentException();
-
-		macs = removeDuplicates(macs);
-		MAC.checkMacList(macs);
-		cryptoWishList.s2c_mac_algos = macs;
-	}
-
-	/**
-	 * Define the set of allowed server host key algorithms to be used for the
-	 * following key exchange operations.
-	 * <p>
-	 * Unless you know what you are doing, you will never need this.
-	 * 
-	 * @param algos
-	 *            An array of allowed server host key algorithms. SSH-2 defines
-	 *            <code>ssh-dss</code> and <code>ssh-rsa</code>. The
-	 *            entries of the array must be ordered after preference, i.e.,
-	 *            the entry at index 0 is the most preferred one. You must
-	 *            specify at least one entry.
-	 */
-	public synchronized void setServerHostKeyAlgorithms(String[] algos)
-	{
-		if ((algos == null) || (algos.length == 0))
-			throw new IllegalArgumentException();
-
-		algos = removeDuplicates(algos);
-		KexManager.checkServerHostkeyAlgorithmsList(algos);
-		cryptoWishList.serverHostKeyAlgorithms = algos;
-	}
-
-	/**
-	 * Enable/disable TCP_NODELAY (disable/enable Nagle's algorithm) on the
-	 * underlying socket.
-	 * <p>
-	 * Can be called at any time. If the connection has not yet been established
-	 * then the passed value will be stored and set after the socket has been
-	 * set up. The default value that will be used is <code>false</code>.
-	 * 
-	 * @param enable
-	 *            the argument passed to the <code>Socket.setTCPNoDelay()</code>
-	 *            method.
-	 * @throws IOException
-	 */
-	public synchronized void setTCPNoDelay(boolean enable) throws IOException
-	{
-		tcpNoDelay = enable;
-
-		if (tm != null)
-			tm.setTcpNoDelay(enable);
-	}
-
-	/**
-	 * Used to tell the library that the connection shall be established through
-	 * a proxy server. It only makes sense to call this method before calling
-	 * the {@link #connect() connect()} method.
-	 * <p>
-	 * At the moment, only HTTP proxies are supported.
-	 * <p>
-	 * Note: This method can be called any number of times. The
-	 * {@link #connect() connect()} method will use the value set in the last
-	 * preceding invocation of this method.
-	 * 
-	 * @see HTTPProxyData
-	 * 
-	 * @param proxyData
-	 *            Connection information about the proxy. If <code>null</code>,
-	 *            then no proxy will be used (non surprisingly, this is also the
-	 *            default).
-	 */
-	public synchronized void setProxyData(ProxyData proxyData)
-	{
-		this.proxyData = proxyData;
-	}
-
-	/**
-	 * Request a remote port forwarding. If successful, then forwarded
-	 * connections will be redirected to the given target address. You can
-	 * cancle a requested remote port forwarding by calling
-	 * {@link #cancelRemotePortForwarding(int) cancelRemotePortForwarding()}.
-	 * <p>
-	 * A call of this method will block until the peer either agreed or
-	 * disagreed to your request-
-	 * <p>
-	 * Note 1: this method typically fails if you
-	 * <ul>
-	 * <li>pass a port number for which the used remote user has not enough
-	 * permissions (i.e., port &lt; 1024)</li>
-	 * <li>or pass a port number that is already in use on the remote server</li>
-	 * <li>or if remote port forwarding is disabled on the server.</li>
-	 * </ul>
-	 * <p>
-	 * Note 2: (from the openssh man page): By default, the listening socket on
-	 * the server will be bound to the loopback interface only. This may be
-	 * overriden by specifying a bind address. Specifying a remote bind address
-	 * will only succeed if the server's <b>GatewayPorts</b> option is enabled
-	 * (see sshd_config(5)).
-	 * 
-	 * @param bindAddress
-	 *            address to bind to on the server:
-	 *            <ul>
-	 *            <li>"" means that connections are to be accepted on all
-	 *            protocol families supported by the SSH implementation</li>
-	 *            <li>"0.0.0.0" means to listen on all IPv4 addresses</li>
-	 *            <li>"::" means to listen on all IPv6 addresses</li>
-	 *            <li>"localhost" means to listen on all protocol families
-	 *            supported by the SSH implementation on loopback addresses
-	 *            only, [RFC3330] and RFC3513]</li>
-	 *            <li>"127.0.0.1" and "::1" indicate listening on the loopback
-	 *            interfaces for IPv4 and IPv6 respectively</li>
-	 *            </ul>
-	 * @param bindPort
-	 *            port number to bind on the server (must be &gt; 0)
-	 * @param targetAddress
-	 *            the target address (IP or hostname)
-	 * @param targetPort
-	 *            the target port
-	 * @throws IOException
-	 */
-	public synchronized void requestRemotePortForwarding(String bindAddress, int bindPort, String targetAddress,
-			int targetPort) throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("You need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("The connection is not authenticated.");
-
-		if ((bindAddress == null) || (targetAddress == null) || (bindPort <= 0) || (targetPort <= 0))
-			throw new IllegalArgumentException();
-
-		cm.requestGlobalForward(bindAddress, bindPort, targetAddress, targetPort);
-	}
-
-	/**
-	 * Cancel an earlier requested remote port forwarding. Currently active
-	 * forwardings will not be affected (e.g., disrupted). Note that further
-	 * connection forwarding requests may be received until this method has
-	 * returned.
-	 * 
-	 * @param bindPort
-	 *            the allocated port number on the server
-	 * @throws IOException
-	 *             if the remote side refuses the cancel request or another low
-	 *             level error occurs (e.g., the underlying connection is
-	 *             closed)
-	 */
-	public synchronized void cancelRemotePortForwarding(int bindPort) throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("You need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("The connection is not authenticated.");
-
-		cm.requestCancelGlobalForward(bindPort);
-	}
-
-	/**
-	 * Provide your own instance of SecureRandom. Can be used, e.g., if you want
-	 * to seed the used SecureRandom generator manually.
-	 * <p>
-	 * The SecureRandom instance is used during key exchanges, public key
-	 * authentication, x11 cookie generation and the like.
-	 * 
-	 * @param rnd
-	 *            a SecureRandom instance
-	 */
-	public synchronized void setSecureRandom(SecureRandom rnd)
-	{
-		if (rnd == null)
-			throw new IllegalArgumentException();
-
-		this.generator = rnd;
-	}
-
-	/**
-	 * Enable/disable debug logging. <b>Only do this when requested by Trilead
-	 * support.</b>
-	 * <p>
-	 * For speed reasons, some static variables used to check whether debugging
-	 * is enabled are not protected with locks. In other words, if you
-	 * dynamicaly enable/disable debug logging, then some threads may still use
-	 * the old setting. To be on the safe side, enable debugging before doing
-	 * the <code>connect()</code> call.
-	 * 
-	 * @param enable
-	 *            on/off
-	 * @param logger
-	 *            a {@link DebugLogger DebugLogger} instance, <code>null</code>
-	 *            means logging using the simple logger which logs all messages
-	 *            to to stderr. Ignored if enabled is <code>false</code>
-	 */
-	public synchronized void enableDebugging(boolean enable, DebugLogger logger)
-	{
-		Logger.enabled = enable;
-
-		if (enable == false)
-		{
-			Logger.logger = null;
-		}
-		else
-		{
-			if (logger == null)
-			{
-				logger = new DebugLogger()
-				{
-
-					public void log(int level, String className, String message)
-					{
-						long now = System.currentTimeMillis();
-						System.err.println(now + " : " + className + ": " + message);
-					}
-				};
-			}
-
-			Logger.logger = logger;
-		}
-	}
-
-	/**
-	 * This method can be used to perform end-to-end connection testing. It
-	 * sends a 'ping' message to the server and waits for the 'pong' from the
-	 * server.
-	 * <p>
-	 * When this method throws an exception, then you can assume that the
-	 * connection should be abandoned.
-	 * <p>
-	 * Note: Works only after one has passed successfully the authentication
-	 * step.
-	 * <p>
-	 * Implementation details: this method sends a SSH_MSG_GLOBAL_REQUEST
-	 * request ('trilead-ping') to the server and waits for the
-	 * SSH_MSG_REQUEST_FAILURE reply packet from the server.
-	 * 
-	 * @throws IOException
-	 *             in case of any problem
-	 */
-	public synchronized void ping() throws IOException
-	{
-		if (tm == null)
-			throw new IllegalStateException("You need to establish a connection first.");
-
-		if (!authenticated)
-			throw new IllegalStateException("The connection is not authenticated.");
-
-		cm.requestGlobalTrileadPing();
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/ConnectionInfo.java b/app/src/main/java/com/trilead/ssh2/ConnectionInfo.java
deleted file mode 100644
index b0ddbcf..0000000
--- a/app/src/main/java/com/trilead/ssh2/ConnectionInfo.java
+++ /dev/null
@@ -1,53 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * In most cases you probably do not need the information contained in here.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ConnectionInfo.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class ConnectionInfo
-{
-	/**
-	 * The used key exchange (KEX) algorithm in the latest key exchange.
-	 */
-	public String keyExchangeAlgorithm;
-
-	/**
-	 * The currently used crypto algorithm for packets from to the client to the
-	 * server.
-	 */
-	public String clientToServerCryptoAlgorithm;
-	/**
-	 * The currently used crypto algorithm for packets from to the server to the
-	 * client.
-	 */
-	public String serverToClientCryptoAlgorithm;
-
-	/**
-	 * The currently used MAC algorithm for packets from to the client to the
-	 * server.
-	 */
-	public String clientToServerMACAlgorithm;
-	/**
-	 * The currently used MAC algorithm for packets from to the server to the
-	 * client.
-	 */
-	public String serverToClientMACAlgorithm;
-
-	/**
-	 * The type of the server host key (currently either "ssh-dss" or
-	 * "ssh-rsa").
-	 */
-	public String serverHostKeyAlgorithm;
-	/**
-	 * The server host key that was sent during the latest key exchange.
-	 */
-	public byte[] serverHostKey;
-
-	/**
-	 * Number of kex exchanges performed on this connection so far.
-	 */
-	public int keyExchangeCounter = 0;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/ConnectionMonitor.java b/app/src/main/java/com/trilead/ssh2/ConnectionMonitor.java
deleted file mode 100644
index 2f96d25..0000000
--- a/app/src/main/java/com/trilead/ssh2/ConnectionMonitor.java
+++ /dev/null
@@ -1,34 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * A <code>ConnectionMonitor</code> is used to get notified when the
- * underlying socket of a connection is closed. 
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ConnectionMonitor.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public interface ConnectionMonitor
-{
-	/**
-	 * This method is called after the connection's underlying
-	 * socket has been closed. E.g., due to the {@link Connection#close()} request of the
-	 * user, if the peer closed the connection, due to a fatal error during connect()
-	 * (also if the socket cannot be established) or if a fatal error occured on
-	 * an established connection.
-	 * <p>
-	 * This is an experimental feature.
-	 * <p>
-	 * You MUST NOT make any assumption about the thread that invokes this method.
-	 * <p>
-	 * <b>Please note: if the connection is not connected (e.g., there was no successful
-	 * connect() call), then the invocation of {@link Connection#close()} will NOT trigger
-	 * this method.</b>
-	 * 
-	 * @see Connection#addConnectionMonitor(ConnectionMonitor)
-	 * 
-	 * @param reason Includes an indication why the socket was closed.
-	 */
-	public void connectionLost(Throwable reason);
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/trilead/ssh2/DHGexParameters.java b/app/src/main/java/com/trilead/ssh2/DHGexParameters.java
deleted file mode 100644
index a2945ee..0000000
--- a/app/src/main/java/com/trilead/ssh2/DHGexParameters.java
+++ /dev/null
@@ -1,121 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * A <code>DHGexParameters</code> object can be used to specify parameters for
- * the diffie-hellman group exchange.
- * <p>
- * Depending on which constructor is used, either the use of a
- * <code>SSH_MSG_KEX_DH_GEX_REQUEST</code> or <code>SSH_MSG_KEX_DH_GEX_REQUEST_OLD</code>
- * can be forced.
- * 
- * @see Connection#setDHGexParameters(DHGexParameters)
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DHGexParameters.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class DHGexParameters
-{
-	private final int min_group_len;
-	private final int pref_group_len;
-	private final int max_group_len;
-
-	private static final int MIN_ALLOWED = 1024;
-	private static final int MAX_ALLOWED = 8192;
-
-	/**
-	 * Same as calling {@link #DHGexParameters(int, int, int) DHGexParameters(1024, 1024, 4096)}.
-	 * This is also the default used by the Connection class.
-	 * 
-	 */
-	public DHGexParameters()
-	{
-		this(1024, 1024, 4096);
-	}
-
-	/**
-	 * This constructor can be used to force the sending of a
-	 * <code>SSH_MSG_KEX_DH_GEX_REQUEST_OLD</code> request.
-	 * Internally, the minimum and maximum group lengths will
-	 * be set to zero.
-	 * 
-	 * @param pref_group_len has to be &gt= 1024 and &lt;= 8192
-	 */
-	public DHGexParameters(int pref_group_len)
-	{
-		if ((pref_group_len < MIN_ALLOWED) || (pref_group_len > MAX_ALLOWED))
-			throw new IllegalArgumentException("pref_group_len out of range!");
-
-		this.pref_group_len = pref_group_len;
-		this.min_group_len = 0;
-		this.max_group_len = 0;
-	}
-
-	/**
-	 * This constructor can be used to force the sending of a
-	 * <code>SSH_MSG_KEX_DH_GEX_REQUEST</code> request.
-	 * <p>
-	 * Note: older OpenSSH servers don't understand this request, in which
-	 * case you should use the {@link #DHGexParameters(int)} constructor.
-	 * <p>
-	 * All values have to be &gt= 1024 and &lt;= 8192. Furthermore,
-	 * min_group_len &lt;= pref_group_len &lt;= max_group_len.
-	 * 
-	 * @param min_group_len
-	 * @param pref_group_len
-	 * @param max_group_len
-	 */
-	public DHGexParameters(int min_group_len, int pref_group_len, int max_group_len)
-	{
-		if ((min_group_len < MIN_ALLOWED) || (min_group_len > MAX_ALLOWED))
-			throw new IllegalArgumentException("min_group_len out of range!");
-
-		if ((pref_group_len < MIN_ALLOWED) || (pref_group_len > MAX_ALLOWED))
-			throw new IllegalArgumentException("pref_group_len out of range!");
-
-		if ((max_group_len < MIN_ALLOWED) || (max_group_len > MAX_ALLOWED))
-			throw new IllegalArgumentException("max_group_len out of range!");
-
-		if ((pref_group_len < min_group_len) || (pref_group_len > max_group_len))
-			throw new IllegalArgumentException("pref_group_len is incompatible with min and max!");
-
-		if (max_group_len < min_group_len)
-			throw new IllegalArgumentException("max_group_len must not be smaller than min_group_len!");
-
-		this.min_group_len = min_group_len;
-		this.pref_group_len = pref_group_len;
-		this.max_group_len = max_group_len;
-	}
-
-	/**
-	 * Get the maximum group length.
-	 * 
-	 * @return the maximum group length, may be <code>zero</code> if
-	 *         SSH_MSG_KEX_DH_GEX_REQUEST_OLD should be requested
-	 */
-	public int getMax_group_len()
-	{
-		return max_group_len;
-	}
-
-	/**
-	 * Get the minimum group length.
-	 * 
-	 * @return minimum group length, may be <code>zero</code> if
-	 *         SSH_MSG_KEX_DH_GEX_REQUEST_OLD should be requested
-	 */
-	public int getMin_group_len()
-	{
-		return min_group_len;
-	}
-
-	/**
-	 * Get the preferred group length.
-	 * 
-	 * @return the preferred group length
-	 */
-	public int getPref_group_len()
-	{
-		return pref_group_len;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/DebugLogger.java b/app/src/main/java/com/trilead/ssh2/DebugLogger.java
deleted file mode 100644
index adf2c8e..0000000
--- a/app/src/main/java/com/trilead/ssh2/DebugLogger.java
+++ /dev/null
@@ -1,23 +0,0 @@
-package com.trilead.ssh2;
-
-/**
- * An interface which needs to be implemented if you
- * want to capture debugging messages.
- * 
- * @see Connection#enableDebugging(boolean, DebugLogger)
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DebugLogger.java,v 1.1 2008/03/03 07:01:36 cplattne Exp $
- */
-public interface DebugLogger
-{
-
-/**
- * Log a debug message.
- * 
- * @param level 0-99, 99 is a the most verbose level
- * @param className the class that generated the message
- * @param message the debug message
- */
-	public void log(int level, String className, String message);	
-}
diff --git a/app/src/main/java/com/trilead/ssh2/DynamicPortForwarder.java b/app/src/main/java/com/trilead/ssh2/DynamicPortForwarder.java
deleted file mode 100644
index a15efe7..0000000
--- a/app/src/main/java/com/trilead/ssh2/DynamicPortForwarder.java
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * ConnectBot: simple, powerful, open-source SSH client for Android
- * Copyright 2007 Kenny Root, Jeffrey Sharkey
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.trilead.ssh2;
-
-import java.io.IOException;
-import java.net.InetSocketAddress;
-
-import com.trilead.ssh2.channel.ChannelManager;
-import com.trilead.ssh2.channel.DynamicAcceptThread;
-
-/**
- * A <code>DynamicPortForwarder</code> forwards TCP/IP connections to a local
- * port via the secure tunnel to another host which is selected via the
- * SOCKS protocol. Checkout {@link Connection#createDynamicPortForwarder(int)}
- * on how to create one.
- *
- * @author Kenny Root
- * @version $Id: $
- */
-public class DynamicPortForwarder {
-	ChannelManager cm;
-
-	DynamicAcceptThread dat;
-
-	DynamicPortForwarder(ChannelManager cm, int local_port)
-			throws IOException
-	{
-		this.cm = cm;
-
-		dat = new DynamicAcceptThread(cm, local_port);
-		dat.setDaemon(true);
-		dat.start();
-	}
-
-	DynamicPortForwarder(ChannelManager cm, InetSocketAddress addr) throws IOException {
-		this.cm = cm;
-
-		dat = new DynamicAcceptThread(cm, addr);
-		dat.setDaemon(true);
-		dat.start();
-	}
-
-	/**
-	 * Stop TCP/IP forwarding of newly arriving connections.
-	 *
-	 * @throws IOException
-	 */
-	public void close() throws IOException
-	{
-		dat.stopWorking();
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/HTTPProxyData.java b/app/src/main/java/com/trilead/ssh2/HTTPProxyData.java
deleted file mode 100644
index 2edffe6..0000000
--- a/app/src/main/java/com/trilead/ssh2/HTTPProxyData.java
+++ /dev/null
@@ -1,83 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * A <code>HTTPProxyData</code> object is used to specify the needed connection data
- * to connect through a HTTP proxy. 
- * 
- * @see Connection#setProxyData(ProxyData)
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: HTTPProxyData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class HTTPProxyData implements ProxyData
-{
-	public final String proxyHost;
-	public final int proxyPort;
-	public final String proxyUser;
-	public final String proxyPass;
-	public final String[] requestHeaderLines;
-
-	/**
-	 * Same as calling {@link #HTTPProxyData(String, int, String, String) HTTPProxyData(proxyHost, proxyPort, <code>null</code>, <code>null</code>)}
-	 * 
-	 * @param proxyHost Proxy hostname.
-	 * @param proxyPort Proxy port.
-	 */
-	public HTTPProxyData(String proxyHost, int proxyPort)
-	{
-		this(proxyHost, proxyPort, null, null);
-	}
-
-	/**
-	 * Same as calling {@link #HTTPProxyData(String, int, String, String, String[]) HTTPProxyData(proxyHost, proxyPort, <code>null</code>, <code>null</code>, <code>null</code>)}
-	 *
-	 * @param proxyHost Proxy hostname.
-	 * @param proxyPort Proxy port.
-	 * @param proxyUser Username for basic authentication (<code>null</code> if no authentication is needed).
-	 * @param proxyPass Password for basic authentication (<code>null</code> if no authentication is needed).
-	 */
-	public HTTPProxyData(String proxyHost, int proxyPort, String proxyUser, String proxyPass)
-	{
-		this(proxyHost, proxyPort, proxyUser, proxyPass, null);
-	}
-
-	/**
-	 * Connection data for a HTTP proxy. It is possible to specify a username and password
-	 * if the proxy requires basic authentication. Also, additional request header lines can
-	 * be specified (e.g., "User-Agent: CERN-LineMode/2.15 libwww/2.17b3").
-	 * <p>
-	 * Please note: if you want to use basic authentication, then both <code>proxyUser</code>
-	 * and <code>proxyPass</code> must be non-null.
-	 * <p>
-	 * Here is an example:
-	 * <p>
-	 * <code>
-	 * new HTTPProxyData("192.168.1.1", "3128", "proxyuser", "secret", new String[] {"User-Agent: TrileadBasedClient/1.0", "X-My-Proxy-Option: something"});
-	 * </code>
-	 * 
-	 * @param proxyHost Proxy hostname.
-	 * @param proxyPort Proxy port.
-	 * @param proxyUser Username for basic authentication (<code>null</code> if no authentication is needed).
-	 * @param proxyPass Password for basic authentication (<code>null</code> if no authentication is needed).
-	 * @param requestHeaderLines An array with additional request header lines (without end-of-line markers)
-	 *        that have to be sent to the server. May be <code>null</code>.
-	 */
-
-	public HTTPProxyData(String proxyHost, int proxyPort, String proxyUser, String proxyPass,
-			String[] requestHeaderLines)
-	{
-		if (proxyHost == null)
-			throw new IllegalArgumentException("proxyHost must be non-null");
-
-		if (proxyPort < 0)
-			throw new IllegalArgumentException("proxyPort must be non-negative");
-
-		this.proxyHost = proxyHost;
-		this.proxyPort = proxyPort;
-		this.proxyUser = proxyUser;
-		this.proxyPass = proxyPass;
-		this.requestHeaderLines = requestHeaderLines;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/HTTPProxyException.java b/app/src/main/java/com/trilead/ssh2/HTTPProxyException.java
deleted file mode 100644
index 4687dd1..0000000
--- a/app/src/main/java/com/trilead/ssh2/HTTPProxyException.java
+++ /dev/null
@@ -1,29 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.IOException;
-
-/**
- * May be thrown upon connect() if a HTTP proxy is being used.
- * 
- * @see Connection#connect()
- * @see Connection#setProxyData(ProxyData)
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: HTTPProxyException.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class HTTPProxyException extends IOException
-{
-	private static final long serialVersionUID = 2241537397104426186L;
-
-	public final String httpResponse;
-	public final int httpErrorCode;
-
-	public HTTPProxyException(String httpResponse, int httpErrorCode)
-	{
-		super("HTTP Proxy Error (" + httpErrorCode + " " + httpResponse + ")");
-		this.httpResponse = httpResponse;
-		this.httpErrorCode = httpErrorCode;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/InteractiveCallback.java b/app/src/main/java/com/trilead/ssh2/InteractiveCallback.java
deleted file mode 100644
index 3b83417..0000000
--- a/app/src/main/java/com/trilead/ssh2/InteractiveCallback.java
+++ /dev/null
@@ -1,55 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * An <code>InteractiveCallback</code> is used to respond to challenges sent
- * by the server if authentication mode "keyboard-interactive" is selected.
- * 
- * @see Connection#authenticateWithKeyboardInteractive(String,
- *      String[], InteractiveCallback)
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: InteractiveCallback.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public interface InteractiveCallback
-{
-	/**
-	 * This callback interface is used during a "keyboard-interactive"
-	 * authentication. Every time the server sends a set of challenges (however,
-	 * most often just one challenge at a time), this callback function will be
-	 * called to give your application a chance to talk to the user and to
-	 * determine the response(s).
-	 * <p>
-	 * Some copy-paste information from the standard: a command line interface
-	 * (CLI) client SHOULD print the name and instruction (if non-empty), adding
-	 * newlines. Then for each prompt in turn, the client SHOULD display the
-	 * prompt and read the user input. The name and instruction fields MAY be
-	 * empty strings, the client MUST be prepared to handle this correctly. The
-	 * prompt field(s) MUST NOT be empty strings.
-	 * <p>
-	 * Please refer to draft-ietf-secsh-auth-kbdinteract-XX.txt for the details.
-	 * <p>
-	 * Note: clients SHOULD use control character filtering as discussed in
-	 * RFC4251 to avoid attacks by including
-	 * terminal control characters in the fields to be displayed.
-	 * 
-	 * @param name
-	 *            the name String sent by the server.
-	 * @param instruction
-	 *            the instruction String sent by the server.
-	 * @param numPrompts
-	 *            number of prompts - may be zero (in this case, you should just
-	 *            return a String array of length zero).
-	 * @param prompt
-	 *            an array (length <code>numPrompts</code>) of Strings
-	 * @param echo
-	 *            an array (length <code>numPrompts</code>) of booleans. For
-	 *            each prompt, the corresponding echo field indicates whether or
-	 *            not the user input should be echoed as characters are typed.
-	 * @return an array of reponses - the array size must match the parameter
-	 *         <code>numPrompts</code>.
-	 */
-	public String[] replyToChallenge(String name, String instruction, int numPrompts, String[] prompt, boolean[] echo)
-			throws Exception;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/KnownHosts.java b/app/src/main/java/com/trilead/ssh2/KnownHosts.java
deleted file mode 100644
index ec022ff..0000000
--- a/app/src/main/java/com/trilead/ssh2/KnownHosts.java
+++ /dev/null
@@ -1,844 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.BufferedReader;
-import java.io.CharArrayReader;
-import java.io.CharArrayWriter;
-import java.io.File;
-import java.io.FileReader;
-import java.io.IOException;
-import java.io.RandomAccessFile;
-import java.io.UnsupportedEncodingException;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-import java.security.InvalidKeyException;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-import java.security.PublicKey;
-import java.security.SecureRandom;
-import java.security.interfaces.DSAPublicKey;
-import java.security.interfaces.ECPublicKey;
-import java.security.interfaces.RSAPublicKey;
-import java.util.Iterator;
-import java.util.LinkedList;
-import java.util.Locale;
-import java.util.Vector;
-
-import javax.crypto.Mac;
-import javax.crypto.spec.SecretKeySpec;
-
-import com.trilead.ssh2.crypto.Base64;
-import com.trilead.ssh2.signature.DSASHA1Verify;
-import com.trilead.ssh2.signature.ECDSASHA2Verify;
-import com.trilead.ssh2.signature.RSASHA1Verify;
-
-
-/**
- * The <code>KnownHosts</code> class is a handy tool to verify received server hostkeys
- * based on the information in <code>known_hosts</code> files (the ones used by OpenSSH).
- * <p>
- * It offers basically an in-memory database for known_hosts entries, as well as some
- * helper functions. Entries from a <code>known_hosts</code> file can be loaded at construction time.
- * It is also possible to add more keys later (e.g., one can parse different
- * <code>known_hosts<code> files).
- * <p>
- * It is a thread safe implementation, therefore, you need only to instantiate one
- * <code>KnownHosts</code> for your whole application.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KnownHosts.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-
-public class KnownHosts
-{
-	public static final int HOSTKEY_IS_OK = 0;
-	public static final int HOSTKEY_IS_NEW = 1;
-	public static final int HOSTKEY_HAS_CHANGED = 2;
-
-	private class KnownHostsEntry
-	{
-		String[] patterns;
-		PublicKey key;
-
-		KnownHostsEntry(String[] patterns, PublicKey key)
-		{
-			this.patterns = patterns;
-			this.key = key;
-		}
-	}
-
-	private LinkedList<KnownHostsEntry> publicKeys = new LinkedList<KnownHostsEntry>();
-
-	public KnownHosts()
-	{
-	}
-
-	public KnownHosts(char[] knownHostsData) throws IOException
-	{
-		initialize(knownHostsData);
-	}
-
-	public KnownHosts(File knownHosts) throws IOException
-	{
-		initialize(knownHosts);
-	}
-
-	/**
-	 * Adds a single public key entry to the database. Note: this will NOT add the public key
-	 * to any physical file (e.g., "~/.ssh/known_hosts") - use <code>addHostkeyToFile()</code> for that purpose.
-	 * This method is designed to be used in a {@link ServerHostKeyVerifier}.
-	 * 
-	 * @param hostnames a list of hostname patterns - at least one most be specified. Check out the
-	 *        OpenSSH sshd man page for a description of the pattern matching algorithm.
-	 * @param serverHostKeyAlgorithm as passed to the {@link ServerHostKeyVerifier}.
-	 * @param serverHostKey as passed to the {@link ServerHostKeyVerifier}.
-	 * @throws IOException
-	 */
-	public void addHostkey(String hostnames[], String serverHostKeyAlgorithm, byte[] serverHostKey) throws IOException
-	{
-		if (hostnames == null)
-			throw new IllegalArgumentException("hostnames may not be null");
-
-		if ("ssh-rsa".equals(serverHostKeyAlgorithm))
-		{
-			RSAPublicKey rpk = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey);
-
-			synchronized (publicKeys)
-			{
-				publicKeys.add(new KnownHostsEntry(hostnames, rpk));
-			}
-		}
-		else if ("ssh-dss".equals(serverHostKeyAlgorithm))
-		{
-			DSAPublicKey dpk = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey);
-
-			synchronized (publicKeys)
-			{
-				publicKeys.add(new KnownHostsEntry(hostnames, dpk));
-			}
-		}
-		else if (serverHostKeyAlgorithm.startsWith(ECDSASHA2Verify.ECDSA_SHA2_PREFIX))
-		{
-			ECPublicKey epk = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey);
-
-			synchronized (publicKeys) {
-				publicKeys.add(new KnownHostsEntry(hostnames, epk));
-			}
-		}
-		else
-			throw new IOException("Unknwon host key type (" + serverHostKeyAlgorithm + ")");
-	}
-
-	/**
-	 * Parses the given known_hosts data and adds entries to the database.
-	 * 
-	 * @param knownHostsData
-	 * @throws IOException
-	 */
-	public void addHostkeys(char[] knownHostsData) throws IOException
-	{
-		initialize(knownHostsData);
-	}
-
-	/**
-	 * Parses the given known_hosts file and adds entries to the database.
-	 * 
-	 * @param knownHosts
-	 * @throws IOException
-	 */
-	public void addHostkeys(File knownHosts) throws IOException
-	{
-		initialize(knownHosts);
-	}
-
-	/**
-	 * Generate the hashed representation of the given hostname. Useful for adding entries
-	 * with hashed hostnames to a known_hosts file. (see -H option of OpenSSH key-gen).
-	 *
-	 * @param hostname
-	 * @return the hashed representation, e.g., "|1|cDhrv7zwEUV3k71CEPHnhHZezhA=|Xo+2y6rUXo2OIWRAYhBOIijbJMA="
-	 */
-	public static final String createHashedHostname(String hostname)
-	{
-		MessageDigest sha1;
-		try {
-			sha1 = MessageDigest.getInstance("SHA1");
-		} catch (NoSuchAlgorithmException e) {
-			throw new RuntimeException("VM doesn't support SHA1", e);
-		}
-
-		byte[] salt = new byte[sha1.getDigestLength()];
-
-		new SecureRandom().nextBytes(salt);
-
-		byte[] hash = hmacSha1Hash(salt, hostname);
-
-		String base64_salt = new String(Base64.encode(salt));
-		String base64_hash = new String(Base64.encode(hash));
-
-		return new String("|1|" + base64_salt + "|" + base64_hash);
-	}
-
-	private static final byte[] hmacSha1Hash(byte[] salt, String hostname)
-	{
-		Mac hmac;
-		try {
-			hmac = Mac.getInstance("HmacSHA1");
-			if (salt.length != hmac.getMacLength())
-				throw new IllegalArgumentException("Salt has wrong length (" + salt.length + ")");
-			hmac.init(new SecretKeySpec(salt, "HmacSHA1"));
-		} catch (NoSuchAlgorithmException e) {
-			throw new RuntimeException("Unable to HMAC-SHA1", e);
-		} catch (InvalidKeyException e) {
-			throw new RuntimeException("Unable to create SecretKey", e);
-		}
-
-		try
-		{
-			hmac.update(hostname.getBytes("ISO-8859-1"));
-		}catch(UnsupportedEncodingException ignore)
-		{
-			/* Actually, ISO-8859-1 is supported by all correct
-			 * Java implementations. But... you never know. */
-			hmac.update(hostname.getBytes());
-		}
-
-		return hmac.doFinal();
-	}
-
-	private final boolean checkHashed(String entry, String hostname)
-	{
-		if (entry.startsWith("|1|") == false)
-			return false;
-
-		int delim_idx = entry.indexOf('|', 3);
-
-		if (delim_idx == -1)
-			return false;
-
-		String salt_base64 = entry.substring(3, delim_idx);
-		String hash_base64 = entry.substring(delim_idx + 1);
-
-		byte[] salt = null;
-		byte[] hash = null;
-
-		try
-		{
-			salt = Base64.decode(salt_base64.toCharArray());
-			hash = Base64.decode(hash_base64.toCharArray());
-		}
-		catch (IOException e)
-		{
-			return false;
-		}
-
-		try {
-			MessageDigest sha1 = MessageDigest.getInstance("SHA1");
-			if (salt.length != sha1.getDigestLength())
-				return false;
-		} catch (NoSuchAlgorithmException e) {
-			throw new RuntimeException("VM does not support SHA1", e);
-		}
-
-		byte[] dig = hmacSha1Hash(salt, hostname);
-
-		for (int i = 0; i < dig.length; i++)
-			if (dig[i] != hash[i])
-				return false;
-
-		return true;
-	}
-
-	private int checkKey(String remoteHostname, PublicKey remoteKey)
-	{
-		int result = HOSTKEY_IS_NEW;
-
-		synchronized (publicKeys)
-		{
-			Iterator<KnownHostsEntry> i = publicKeys.iterator();
-
-			while (i.hasNext())
-			{
-				KnownHostsEntry ke = i.next();
-
-				if (hostnameMatches(ke.patterns, remoteHostname) == false)
-					continue;
-
-				boolean res = matchKeys(ke.key, remoteKey);
-
-				if (res == true)
-					return HOSTKEY_IS_OK;
-
-				result = HOSTKEY_HAS_CHANGED;
-			}
-		}
-		return result;
-	}
-
-	private Vector<PublicKey> getAllKeys(String hostname)
-	{
-		Vector<PublicKey> keys = new Vector<PublicKey>();
-
-		synchronized (publicKeys)
-		{
-			Iterator<KnownHostsEntry> i = publicKeys.iterator();
-
-			while (i.hasNext())
-			{
-				KnownHostsEntry ke = i.next();
-
-				if (hostnameMatches(ke.patterns, hostname) == false)
-					continue;
-
-				keys.addElement(ke.key);
-			}
-		}
-
-		return keys;
-	}
-
-	/**
-	 * Try to find the preferred order of hostkey algorithms for the given hostname.
-	 * Based on the type of hostkey that is present in the internal database
-	 * (i.e., either <code>ssh-rsa</code> or <code>ssh-dss</code>)
-	 * an ordered list of hostkey algorithms is returned which can be passed
-	 * to <code>Connection.setServerHostKeyAlgorithms</code>. 
-	 * 
-	 * @param hostname
-	 * @return <code>null</code> if no key for the given hostname is present or
-	 * there are keys of multiple types present for the given hostname. Otherwise,
-	 * an array with hostkey algorithms is returned (i.e., an array of length 2).
-	 */
-	public String[] getPreferredServerHostkeyAlgorithmOrder(String hostname)
-	{
-		String[] algos = recommendHostkeyAlgorithms(hostname);
-
-		if (algos != null)
-			return algos;
-
-		InetAddress[] ipAdresses = null;
-
-		try
-		{
-			ipAdresses = InetAddress.getAllByName(hostname);
-		}
-		catch (UnknownHostException e)
-		{
-			return null;
-		}
-
-		for (int i = 0; i < ipAdresses.length; i++)
-		{
-			algos = recommendHostkeyAlgorithms(ipAdresses[i].getHostAddress());
-
-			if (algos != null)
-				return algos;
-		}
-
-		return null;
-	}
-
-	private final boolean hostnameMatches(String[] hostpatterns, String hostname)
-	{
-		boolean isMatch = false;
-		boolean negate = false;
-
-		hostname = hostname.toLowerCase(Locale.US);
-
-		for (int k = 0; k < hostpatterns.length; k++)
-		{
-			if (hostpatterns[k] == null)
-				continue;
-
-			String pattern = null;
-
-			/* In contrast to OpenSSH we also allow negated hash entries (as well as hashed
-			 * entries in lines with multiple entries).
-			 */
-
-			if ((hostpatterns[k].length() > 0) && (hostpatterns[k].charAt(0) == '!'))
-			{
-				pattern = hostpatterns[k].substring(1);
-				negate = true;
-			}
-			else
-			{
-				pattern = hostpatterns[k];
-				negate = false;
-			}
-
-			/* Optimize, no need to check this entry */
-
-			if ((isMatch) && (negate == false))
-				continue;
-
-			/* Now compare */
-
-			if (pattern.charAt(0) == '|')
-			{
-				if (checkHashed(pattern, hostname))
-				{
-					if (negate)
-						return false;
-					isMatch = true;
-				}
-			}
-			else
-			{
-				pattern = pattern.toLowerCase(Locale.US);
-
-				if ((pattern.indexOf('?') != -1) || (pattern.indexOf('*') != -1))
-				{
-					if (pseudoRegex(pattern.toCharArray(), 0, hostname.toCharArray(), 0))
-					{
-						if (negate)
-							return false;
-						isMatch = true;
-					}
-				}
-				else if (pattern.compareTo(hostname) == 0)
-				{
-					if (negate)
-						return false;
-					isMatch = true;
-				}
-			}
-		}
-
-		return isMatch;
-	}
-
-	private void initialize(char[] knownHostsData) throws IOException
-	{
-		BufferedReader br = new BufferedReader(new CharArrayReader(knownHostsData));
-
-		while (true)
-		{
-			String line = br.readLine();
-
-			if (line == null)
-				break;
-
-			line = line.trim();
-
-			if (line.startsWith("#"))
-				continue;
-
-			String[] arr = line.split(" ");
-
-			if (arr.length >= 3)
-			{
-				if ((arr[1].compareTo("ssh-rsa") == 0) || (arr[1].compareTo("ssh-dss") == 0))
-				{
-					String[] hostnames = arr[0].split(",");
-
-					byte[] msg = Base64.decode(arr[2].toCharArray());
-
-					addHostkey(hostnames, arr[1], msg);
-				}
-			}
-		}
-	}
-
-	private void initialize(File knownHosts) throws IOException
-	{
-		char[] buff = new char[512];
-
-		CharArrayWriter cw = new CharArrayWriter();
-
-		knownHosts.createNewFile();
-
-		FileReader fr = new FileReader(knownHosts);
-
-		while (true)
-		{
-			int len = fr.read(buff);
-			if (len < 0)
-				break;
-			cw.write(buff, 0, len);
-		}
-
-		fr.close();
-
-		initialize(cw.toCharArray());
-	}
-
-	private final boolean matchKeys(PublicKey key1, PublicKey key2)
-	{
-		return key1.equals(key2);
-	}
-
-	private final boolean pseudoRegex(char[] pattern, int i, char[] match, int j)
-	{
-		/* This matching logic is equivalent to the one present in OpenSSH 4.1 */
-
-		while (true)
-		{
-			/* Are we at the end of the pattern? */
-
-			if (pattern.length == i)
-				return (match.length == j);
-
-			if (pattern[i] == '*')
-			{
-				i++;
-
-				if (pattern.length == i)
-					return true;
-
-				if ((pattern[i] != '*') && (pattern[i] != '?'))
-				{
-					while (true)
-					{
-						if ((pattern[i] == match[j]) && pseudoRegex(pattern, i + 1, match, j + 1))
-							return true;
-						j++;
-						if (match.length == j)
-							return false;
-					}
-				}
-
-				while (true)
-				{
-					if (pseudoRegex(pattern, i, match, j))
-						return true;
-					j++;
-					if (match.length == j)
-						return false;
-				}
-			}
-
-			if (match.length == j)
-				return false;
-
-			if ((pattern[i] != '?') && (pattern[i] != match[j]))
-				return false;
-
-			i++;
-			j++;
-		}
-	}
-
-	private String[] recommendHostkeyAlgorithms(String hostname)
-	{
-		String preferredAlgo = null;
-
-		Vector<PublicKey> keys = getAllKeys(hostname);
-
-		for (int i = 0; i < keys.size(); i++)
-		{
-			String thisAlgo = null;
-
-			if (keys.elementAt(i) instanceof RSAPublicKey)
-				thisAlgo = "ssh-rsa";
-			else if (keys.elementAt(i) instanceof DSAPublicKey)
-				thisAlgo = "ssh-dss";
-			else
-				continue;
-
-			if (preferredAlgo != null)
-			{
-				/* If we find different key types, then return null */
-
-				if (preferredAlgo.compareTo(thisAlgo) != 0)
-					return null;
-
-				/* OK, we found the same algo again, optimize */
-
-				continue;
-			}
-		}
-
-		/* If we did not find anything that we know of, return null */
-
-		if (preferredAlgo == null)
-			return null;
-
-		/* Now put the preferred algo to the start of the array.
-		 * You may ask yourself why we do it that way - basically, we could just
-		 * return only the preferred algorithm: since we have a saved key of that
-		 * type (sent earlier from the remote host), then that should work out.
-		 * However, imagine that the server is (for whatever reasons) not offering
-		 * that type of hostkey anymore (e.g., "ssh-rsa" was disabled and
-		 * now "ssh-dss" is being used). If we then do not let the server send us
-		 * a fresh key of the new type, then we shoot ourself into the foot:
-		 * the connection cannot be established and hence the user cannot decide
-		 * if he/she wants to accept the new key.
-		 */
-
-		if (preferredAlgo.equals("ssh-rsa"))
-			return new String[] { "ssh-rsa", "ssh-dss" };
-
-		return new String[] { "ssh-dss", "ssh-rsa" };
-	}
-
-	/**
-	 * Checks the internal hostkey database for the given hostkey.
-	 * If no matching key can be found, then the hostname is resolved to an IP address
-	 * and the search is repeated using that IP address.
-	 * 
-	 * @param hostname the server's hostname, will be matched with all hostname patterns
-	 * @param serverHostKeyAlgorithm type of hostkey, either <code>ssh-rsa</code> or <code>ssh-dss</code>
-	 * @param serverHostKey the key blob
-	 * @return <ul>
-	 *         <li><code>HOSTKEY_IS_OK</code>: the given hostkey matches an entry for the given hostname</li>
-	 *         <li><code>HOSTKEY_IS_NEW</code>: no entries found for this hostname and this type of hostkey</li>
-	 *         <li><code>HOSTKEY_HAS_CHANGED</code>: hostname is known, but with another key of the same type
-	 *         (man-in-the-middle attack?)</li>
-	 *         </ul>
-	 * @throws IOException if the supplied key blob cannot be parsed or does not match the given hostkey type.
-	 */
-	public int verifyHostkey(String hostname, String serverHostKeyAlgorithm, byte[] serverHostKey) throws IOException
-	{
-		PublicKey remoteKey = null;
-
-		if ("ssh-rsa".equals(serverHostKeyAlgorithm))
-		{
-			remoteKey = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey);
-		}
-		else if ("ssh-dss".equals(serverHostKeyAlgorithm))
-		{
-			remoteKey = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey);
-		}
-		else if (serverHostKeyAlgorithm.startsWith("ecdsa-sha2-"))
-		{
-			remoteKey = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey);
-		}
-		else
-			throw new IllegalArgumentException("Unknown hostkey type " + serverHostKeyAlgorithm);
-
-		int result = checkKey(hostname, remoteKey);
-
-		if (result == HOSTKEY_IS_OK)
-			return result;
-
-		InetAddress[] ipAdresses = null;
-
-		try
-		{
-			ipAdresses = InetAddress.getAllByName(hostname);
-		}
-		catch (UnknownHostException e)
-		{
-			return result;
-		}
-
-		for (int i = 0; i < ipAdresses.length; i++)
-		{
-			int newresult = checkKey(ipAdresses[i].getHostAddress(), remoteKey);
-
-			if (newresult == HOSTKEY_IS_OK)
-				return newresult;
-
-			if (newresult == HOSTKEY_HAS_CHANGED)
-				result = HOSTKEY_HAS_CHANGED;
-		}
-
-		return result;
-	}
-
-	/**
-	 * Adds a single public key entry to the a known_hosts file.
-	 * This method is designed to be used in a {@link ServerHostKeyVerifier}.
-	 * 
-	 * @param knownHosts the file where the publickey entry will be appended.
-	 * @param hostnames a list of hostname patterns - at least one most be specified. Check out the
-	 *        OpenSSH sshd man page for a description of the pattern matching algorithm.
-	 * @param serverHostKeyAlgorithm as passed to the {@link ServerHostKeyVerifier}.
-	 * @param serverHostKey as passed to the {@link ServerHostKeyVerifier}.
-	 * @throws IOException
-	 */
-	public final static void addHostkeyToFile(File knownHosts, String[] hostnames, String serverHostKeyAlgorithm,
-			byte[] serverHostKey) throws IOException
-	{
-		if ((hostnames == null) || (hostnames.length == 0))
-			throw new IllegalArgumentException("Need at least one hostname specification");
-
-		if ((serverHostKeyAlgorithm == null) || (serverHostKey == null))
-			throw new IllegalArgumentException();
-
-		CharArrayWriter writer = new CharArrayWriter();
-		
-		for (int i = 0; i < hostnames.length; i++)
-		{
-			if (i != 0)
-				writer.write(',');
-			writer.write(hostnames[i]);
-		}
-
-		writer.write(' ');
-		writer.write(serverHostKeyAlgorithm);
-		writer.write(' ');
-		writer.write(Base64.encode(serverHostKey));
-		writer.write("\n");
-
-		char[] entry = writer.toCharArray();
-		
-		RandomAccessFile raf = new RandomAccessFile(knownHosts, "rw");
-
-		long len = raf.length();
-		
-		if (len > 0)
-		{
-			raf.seek(len - 1);
-			int last = raf.read();
-			if (last != '\n')
-				raf.write('\n');
-		}
-		
-		raf.write(new String(entry).getBytes("ISO-8859-1"));
-		raf.close();
-	}
-
-	/**
-	 * Generates a "raw" fingerprint of a hostkey.
-	 * 
-	 * @param type either "md5" or "sha1"
-	 * @param keyType either "ssh-rsa" or "ssh-dss"
-	 * @param hostkey the hostkey
-	 * @return the raw fingerprint
-	 */
-	static final private byte[] rawFingerPrint(String type, String keyType, byte[] hostkey)
-	{
-		MessageDigest dig = null;
-
-		try {
-			if ("md5".equals(type))
-			{
-				dig = MessageDigest.getInstance("MD5");
-			}
-			else if ("sha1".equals(type))
-			{
-				dig = MessageDigest.getInstance("SHA1");
-			}
-			else
-			{
-				throw new IllegalArgumentException("Unknown hash type " + type);
-			}
-		} catch (NoSuchAlgorithmException e) {
-			throw new IllegalArgumentException("Unknown hash type " + type);
-		}
-
-		if (keyType.startsWith("ecdsa-sha2-"))
-		{
-		}
-		else if ("ssh-rsa".equals(keyType))
-		{
-		}
-		else if ("ssh-dss".equals(keyType))
-		{
-		}
-		else
-			throw new IllegalArgumentException("Unknown key type " + keyType);
-
-		if (hostkey == null)
-			throw new IllegalArgumentException("hostkey is null");
-
-		dig.update(hostkey);
-		return dig.digest();
-	}
-
-	/**
-	 * Convert a raw fingerprint to hex representation (XX:YY:ZZ...).
-	 * @param fingerprint raw fingerprint
-	 * @return the hex representation
-	 */
-	static final private String rawToHexFingerprint(byte[] fingerprint)
-	{
-		final char[] alpha = "0123456789abcdef".toCharArray();
-
-		StringBuffer sb = new StringBuffer();
-
-		for (int i = 0; i < fingerprint.length; i++)
-		{
-			if (i != 0)
-				sb.append(':');
-			int b = fingerprint[i] & 0xff;
-			sb.append(alpha[b >> 4]);
-			sb.append(alpha[b & 15]);
-		}
-
-		return sb.toString();
-	}
-
-	/**
-	 * Convert a raw fingerprint to bubblebabble representation.
-	 * @param raw raw fingerprint
-	 * @return the bubblebabble representation
-	 */
-	static final private String rawToBubblebabbleFingerprint(byte[] raw)
-	{
-		final char[] v = "aeiouy".toCharArray();
-		final char[] c = "bcdfghklmnprstvzx".toCharArray();
-
-		StringBuffer sb = new StringBuffer();
-
-		int seed = 1;
-
-		int rounds = (raw.length / 2) + 1;
-
-		sb.append('x');
-
-		for (int i = 0; i < rounds; i++)
-		{
-			if (((i + 1) < rounds) || ((raw.length) % 2 != 0))
-			{
-				sb.append(v[(((raw[2 * i] >> 6) & 3) + seed) % 6]);
-				sb.append(c[(raw[2 * i] >> 2) & 15]);
-				sb.append(v[((raw[2 * i] & 3) + (seed / 6)) % 6]);
-
-				if ((i + 1) < rounds)
-				{
-					sb.append(c[(((raw[(2 * i) + 1])) >> 4) & 15]);
-					sb.append('-');
-					sb.append(c[(((raw[(2 * i) + 1]))) & 15]);
-					// As long as seed >= 0, seed will be >= 0 afterwards
-					seed = ((seed * 5) + (((raw[2 * i] & 0xff) * 7) + (raw[(2 * i) + 1] & 0xff))) % 36;
-				}
-			}
-			else
-			{
-				sb.append(v[seed % 6]); // seed >= 0, therefore index positive
-				sb.append('x');
-				sb.append(v[seed / 6]);
-			}
-		}
-
-		sb.append('x');
-
-		return sb.toString();
-	}
-
-	/**
-	 * Convert a ssh2 key-blob into a human readable hex fingerprint.
-	 * Generated fingerprints are identical to those generated by OpenSSH.
-	 * <p>
-	 * Example fingerprint: d0:cb:76:19:99:5a:03:fc:73:10:70:93:f2:44:63:47.
-
-	 * @param keytype either "ssh-rsa" or "ssh-dss"
-	 * @param publickey key blob
-	 * @return Hex fingerprint
-	 */
-	public final static String createHexFingerprint(String keytype, byte[] publickey)
-	{
-		byte[] raw = rawFingerPrint("md5", keytype, publickey);
-		return rawToHexFingerprint(raw);
-	}
-
-	/**
-	 * Convert a ssh2 key-blob into a human readable bubblebabble fingerprint.
-	 * The used bubblebabble algorithm (taken from OpenSSH) generates fingerprints
-	 * that are easier to remember for humans.
-	 * <p>
-	 * Example fingerprint: xofoc-bubuz-cazin-zufyl-pivuk-biduk-tacib-pybur-gonar-hotat-lyxux.
-	 * 
-	 * @param keytype either "ssh-rsa" or "ssh-dss"
-	 * @param publickey key data
-	 * @return Bubblebabble fingerprint
-	 */
-	public final static String createBubblebabbleFingerprint(String keytype, byte[] publickey)
-	{
-		byte[] raw = rawFingerPrint("sha1", keytype, publickey);
-		return rawToBubblebabbleFingerprint(raw);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/LocalPortForwarder.java b/app/src/main/java/com/trilead/ssh2/LocalPortForwarder.java
deleted file mode 100644
index 96fa082..0000000
--- a/app/src/main/java/com/trilead/ssh2/LocalPortForwarder.java
+++ /dev/null
@@ -1,63 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.IOException;
-import java.net.InetSocketAddress;
-
-import com.trilead.ssh2.channel.ChannelManager;
-import com.trilead.ssh2.channel.LocalAcceptThread;
-
-
-/**
- * A <code>LocalPortForwarder</code> forwards TCP/IP connections to a local
- * port via the secure tunnel to another host (which may or may not be identical
- * to the remote SSH-2 server). Checkout {@link Connection#createLocalPortForwarder(int, String, int)}
- * on how to create one.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: LocalPortForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class LocalPortForwarder
-{
-	ChannelManager cm;
-
-	String host_to_connect;
-
-	int port_to_connect;
-
-	LocalAcceptThread lat;
-
-	LocalPortForwarder(ChannelManager cm, int local_port, String host_to_connect, int port_to_connect)
-			throws IOException
-	{
-		this.cm = cm;
-		this.host_to_connect = host_to_connect;
-		this.port_to_connect = port_to_connect;
-
-		lat = new LocalAcceptThread(cm, local_port, host_to_connect, port_to_connect);
-		lat.setDaemon(true);
-		lat.start();
-	}
-
-	LocalPortForwarder(ChannelManager cm, InetSocketAddress addr, String host_to_connect, int port_to_connect)
-			throws IOException
-	{
-		this.cm = cm;
-		this.host_to_connect = host_to_connect;
-		this.port_to_connect = port_to_connect;
-
-		lat = new LocalAcceptThread(cm, addr, host_to_connect, port_to_connect);
-		lat.setDaemon(true);
-		lat.start();
-	}
-
-	/**
-	 * Stop TCP/IP forwarding of newly arriving connections.
-	 * 
-	 * @throws IOException
-	 */
-	public void close() throws IOException
-	{
-		lat.stopWorking();
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/LocalStreamForwarder.java b/app/src/main/java/com/trilead/ssh2/LocalStreamForwarder.java
deleted file mode 100644
index 7899367..0000000
--- a/app/src/main/java/com/trilead/ssh2/LocalStreamForwarder.java
+++ /dev/null
@@ -1,78 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-import com.trilead.ssh2.channel.Channel;
-import com.trilead.ssh2.channel.ChannelManager;
-import com.trilead.ssh2.channel.LocalAcceptThread;
-
-
-/**
- * A <code>LocalStreamForwarder</code> forwards an Input- and Outputstream
- * pair via the secure tunnel to another host (which may or may not be identical
- * to the remote SSH-2 server).
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: LocalStreamForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class LocalStreamForwarder
-{
-	ChannelManager cm;
-
-	String host_to_connect;
-	int port_to_connect;
-	LocalAcceptThread lat;
-
-	Channel cn;
-
-	LocalStreamForwarder(ChannelManager cm, String host_to_connect, int port_to_connect) throws IOException
-	{
-		this.cm = cm;
-		this.host_to_connect = host_to_connect;
-		this.port_to_connect = port_to_connect;
-
-		cn = cm.openDirectTCPIPChannel(host_to_connect, port_to_connect, "127.0.0.1", 0);
-	}
-
-	/**
-	 * @return An <code>InputStream</code> object.
-	 * @throws IOException
-	 */
-	public InputStream getInputStream() throws IOException
-	{
-		return cn.getStdoutStream();
-	}
-
-	/**
-	 * Get the OutputStream. Please be aware that the implementation MAY use an
-	 * internal buffer. To make sure that the buffered data is sent over the
-	 * tunnel, you have to call the <code>flush</code> method of the
-	 * <code>OutputStream</code>. To signal EOF, please use the
-	 * <code>close</code> method of the <code>OutputStream</code>.
-	 * 
-	 * @return An <code>OutputStream</code> object.
-	 * @throws IOException
-	 */
-	public OutputStream getOutputStream() throws IOException
-	{
-		return cn.getStdinStream();
-	}
-
-	/**
-	 * Close the underlying SSH forwarding channel and free up resources.
-	 * You can also use this method to force the shutdown of the underlying
-	 * forwarding channel. Pending output (OutputStream not flushed) will NOT
-	 * be sent. Pending input (InputStream) can still be read. If the shutdown
-	 * operation is already in progress (initiated from either side), then this
-	 * call is a no-op.
-	 * 
-	 * @throws IOException
-	 */
-	public void close() throws IOException
-	{
-		cm.closeChannel(cn, "Closed due to user request.", true);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/ProxyData.java b/app/src/main/java/com/trilead/ssh2/ProxyData.java
deleted file mode 100644
index 059a6e3..0000000
--- a/app/src/main/java/com/trilead/ssh2/ProxyData.java
+++ /dev/null
@@ -1,15 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * An abstract marker interface implemented by all proxy data implementations.
- * 
- * @see HTTPProxyData
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ProxyData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public abstract interface ProxyData
-{
-}
diff --git a/app/src/main/java/com/trilead/ssh2/SCPClient.java b/app/src/main/java/com/trilead/ssh2/SCPClient.java
deleted file mode 100644
index b692750..0000000
--- a/app/src/main/java/com/trilead/ssh2/SCPClient.java
+++ /dev/null
@@ -1,729 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-/**
- * A very basic <code>SCPClient</code> that can be used to copy files from/to
- * the SSH-2 server. On the server side, the "scp" program must be in the PATH.
- * <p>
- * This scp client is thread safe - you can download (and upload) different sets
- * of files concurrently without any troubles. The <code>SCPClient</code> is
- * actually mapping every request to a distinct {@link Session}.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SCPClient.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-
-public class SCPClient
-{
-	Connection conn;
-
-	class LenNamePair
-	{
-		long length;
-		String filename;
-	}
-
-	public SCPClient(Connection conn)
-	{
-		if (conn == null)
-			throw new IllegalArgumentException("Cannot accept null argument!");
-		this.conn = conn;
-	}
-
-	private void readResponse(InputStream is) throws IOException
-	{
-		int c = is.read();
-
-		if (c == 0)
-			return;
-
-		if (c == -1)
-			throw new IOException("Remote scp terminated unexpectedly.");
-
-		if ((c != 1) && (c != 2))
-			throw new IOException("Remote scp sent illegal error code.");
-
-		if (c == 2)
-			throw new IOException("Remote scp terminated with error.");
-
-		String err = receiveLine(is);
-		throw new IOException("Remote scp terminated with error (" + err + ").");
-	}
-
-	private String receiveLine(InputStream is) throws IOException
-	{
-		StringBuffer sb = new StringBuffer(30);
-
-		while (true)
-		{
-			/*
-			 * This is a random limit - if your path names are longer, then
-			 * adjust it
-			 */
-
-			if (sb.length() > 8192)
-				throw new IOException("Remote scp sent a too long line");
-
-			int c = is.read();
-
-			if (c < 0)
-				throw new IOException("Remote scp terminated unexpectedly.");
-
-			if (c == '\n')
-				break;
-
-			sb.append((char) c);
-
-		}
-		return sb.toString();
-	}
-
-	private LenNamePair parseCLine(String line) throws IOException
-	{
-		/* Minimum line: "xxxx y z" ---> 8 chars */
-
-		long len;
-
-		if (line.length() < 8)
-			throw new IOException("Malformed C line sent by remote SCP binary, line too short.");
-
-		if ((line.charAt(4) != ' ') || (line.charAt(5) == ' '))
-			throw new IOException("Malformed C line sent by remote SCP binary.");
-
-		int length_name_sep = line.indexOf(' ', 5);
-
-		if (length_name_sep == -1)
-			throw new IOException("Malformed C line sent by remote SCP binary.");
-
-		String length_substring = line.substring(5, length_name_sep);
-		String name_substring = line.substring(length_name_sep + 1);
-
-		if ((length_substring.length() <= 0) || (name_substring.length() <= 0))
-			throw new IOException("Malformed C line sent by remote SCP binary.");
-
-		if ((6 + length_substring.length() + name_substring.length()) != line.length())
-			throw new IOException("Malformed C line sent by remote SCP binary.");
-
-		try
-		{
-			len = Long.parseLong(length_substring);
-		}
-		catch (NumberFormatException e)
-		{
-			throw new IOException("Malformed C line sent by remote SCP binary, cannot parse file length.");
-		}
-
-		if (len < 0)
-			throw new IOException("Malformed C line sent by remote SCP binary, illegal file length.");
-
-		LenNamePair lnp = new LenNamePair();
-		lnp.length = len;
-		lnp.filename = name_substring;
-
-		return lnp;
-	}
-
-	private void sendBytes(Session sess, byte[] data, String fileName, String mode) throws IOException
-	{
-		OutputStream os = sess.getStdin();
-		InputStream is = new BufferedInputStream(sess.getStdout(), 512);
-
-		readResponse(is);
-
-		String cline = "C" + mode + " " + data.length + " " + fileName + "\n";
-
-		os.write(cline.getBytes("ISO-8859-1"));
-		os.flush();
-
-		readResponse(is);
-
-		os.write(data, 0, data.length);
-		os.write(0);
-		os.flush();
-
-		readResponse(is);
-
-		os.write("E\n".getBytes("ISO-8859-1"));
-		os.flush();
-	}
-
-	private void sendFiles(Session sess, String[] files, String[] remoteFiles, String mode) throws IOException
-	{
-		byte[] buffer = new byte[8192];
-
-		OutputStream os = new BufferedOutputStream(sess.getStdin(), 40000);
-		InputStream is = new BufferedInputStream(sess.getStdout(), 512);
-
-		readResponse(is);
-
-		for (int i = 0; i < files.length; i++)
-		{
-			File f = new File(files[i]);
-			long remain = f.length();
-
-			String remoteName;
-
-			if ((remoteFiles != null) && (remoteFiles.length > i) && (remoteFiles[i] != null))
-				remoteName = remoteFiles[i];
-			else
-				remoteName = f.getName();
-
-			String cline = "C" + mode + " " + remain + " " + remoteName + "\n";
-
-			os.write(cline.getBytes("ISO-8859-1"));
-			os.flush();
-
-			readResponse(is);
-
-			FileInputStream fis = null;
-
-			try
-			{
-				fis = new FileInputStream(f);
-
-				while (remain > 0)
-				{
-					int trans;
-					if (remain > buffer.length)
-						trans = buffer.length;
-					else
-						trans = (int) remain;
-
-					if (fis.read(buffer, 0, trans) != trans)
-						throw new IOException("Cannot read enough from local file " + files[i]);
-
-					os.write(buffer, 0, trans);
-
-					remain -= trans;
-				}
-			}
-			finally
-			{
-				if (fis != null)
-					fis.close();
-			}
-
-			os.write(0);
-			os.flush();
-
-			readResponse(is);
-		}
-
-		os.write("E\n".getBytes("ISO-8859-1"));
-		os.flush();
-	}
-
-	private void receiveFiles(Session sess, OutputStream[] targets) throws IOException
-	{
-		byte[] buffer = new byte[8192];
-
-		OutputStream os = new BufferedOutputStream(sess.getStdin(), 512);
-		InputStream is = new BufferedInputStream(sess.getStdout(), 40000);
-
-		os.write(0x0);
-		os.flush();
-
-		for (int i = 0; i < targets.length; i++)
-		{
-			LenNamePair lnp = null;
-
-			while (true)
-			{
-				int c = is.read();
-				if (c < 0)
-					throw new IOException("Remote scp terminated unexpectedly.");
-
-				String line = receiveLine(is);
-
-				if (c == 'T')
-				{
-					/* Ignore modification times */
-
-					continue;
-				}
-
-				if ((c == 1) || (c == 2))
-					throw new IOException("Remote SCP error: " + line);
-
-				if (c == 'C')
-				{
-					lnp = parseCLine(line);
-					break;
-
-				}
-				throw new IOException("Remote SCP error: " + ((char) c) + line);
-			}
-
-			os.write(0x0);
-			os.flush();
-
-			long remain = lnp.length;
-
-			while (remain > 0)
-			{
-				int trans;
-				if (remain > buffer.length)
-					trans = buffer.length;
-				else
-					trans = (int) remain;
-
-				int this_time_received = is.read(buffer, 0, trans);
-
-				if (this_time_received < 0)
-				{
-					throw new IOException("Remote scp terminated connection unexpectedly");
-				}
-
-				targets[i].write(buffer, 0, this_time_received);
-
-				remain -= this_time_received;
-			}
-
-			readResponse(is);
-
-			os.write(0x0);
-			os.flush();
-		}
-	}
-
-	private void receiveFiles(Session sess, String[] files, String target) throws IOException
-	{
-		byte[] buffer = new byte[8192];
-
-		OutputStream os = new BufferedOutputStream(sess.getStdin(), 512);
-		InputStream is = new BufferedInputStream(sess.getStdout(), 40000);
-
-		os.write(0x0);
-		os.flush();
-
-		for (int i = 0; i < files.length; i++)
-		{
-			LenNamePair lnp = null;
-
-			while (true)
-			{
-				int c = is.read();
-				if (c < 0)
-					throw new IOException("Remote scp terminated unexpectedly.");
-
-				String line = receiveLine(is);
-
-				if (c == 'T')
-				{
-					/* Ignore modification times */
-
-					continue;
-				}
-
-				if ((c == 1) || (c == 2))
-					throw new IOException("Remote SCP error: " + line);
-
-				if (c == 'C')
-				{
-					lnp = parseCLine(line);
-					break;
-
-				}
-				throw new IOException("Remote SCP error: " + ((char) c) + line);
-			}
-
-			os.write(0x0);
-			os.flush();
-
-			File f = new File(target + File.separatorChar + lnp.filename);
-			FileOutputStream fop = null;
-
-			try
-			{
-				fop = new FileOutputStream(f);
-
-				long remain = lnp.length;
-
-				while (remain > 0)
-				{
-					int trans;
-					if (remain > buffer.length)
-						trans = buffer.length;
-					else
-						trans = (int) remain;
-
-					int this_time_received = is.read(buffer, 0, trans);
-
-					if (this_time_received < 0)
-					{
-						throw new IOException("Remote scp terminated connection unexpectedly");
-					}
-
-					fop.write(buffer, 0, this_time_received);
-
-					remain -= this_time_received;
-				}
-			}
-			finally
-			{
-				if (fop != null)
-					fop.close();
-			}
-
-			readResponse(is);
-
-			os.write(0x0);
-			os.flush();
-		}
-	}
-
-	/**
-	 * Copy a local file to a remote directory, uses mode 0600 when creating the
-	 * file on the remote side.
-	 * 
-	 * @param localFile
-	 *            Path and name of local file.
-	 * @param remoteTargetDirectory
-	 *            Remote target directory. Use an empty string to specify the
-	 *            default directory.
-	 * 
-	 * @throws IOException
-	 */
-	public void put(String localFile, String remoteTargetDirectory) throws IOException
-	{
-		put(new String[] { localFile }, remoteTargetDirectory, "0600");
-	}
-
-	/**
-	 * Copy a set of local files to a remote directory, uses mode 0600 when
-	 * creating files on the remote side.
-	 * 
-	 * @param localFiles
-	 *            Paths and names of local file names.
-	 * @param remoteTargetDirectory
-	 *            Remote target directory. Use an empty string to specify the
-	 *            default directory.
-	 * 
-	 * @throws IOException
-	 */
-
-	public void put(String[] localFiles, String remoteTargetDirectory) throws IOException
-	{
-		put(localFiles, remoteTargetDirectory, "0600");
-	}
-
-	/**
-	 * Copy a local file to a remote directory, uses the specified mode when
-	 * creating the file on the remote side.
-	 * 
-	 * @param localFile
-	 *            Path and name of local file.
-	 * @param remoteTargetDirectory
-	 *            Remote target directory. Use an empty string to specify the
-	 *            default directory.
-	 * @param mode
-	 *            a four digit string (e.g., 0644, see "man chmod", "man open")
-	 * @throws IOException
-	 */
-	public void put(String localFile, String remoteTargetDirectory, String mode) throws IOException
-	{
-		put(new String[] { localFile }, remoteTargetDirectory, mode);
-	}
-
-	/**
-	 * Copy a local file to a remote directory, uses the specified mode and
-	 * remote filename when creating the file on the remote side.
-	 * 
-	 * @param localFile
-	 *            Path and name of local file.
-	 * @param remoteFileName
-	 *            The name of the file which will be created in the remote
-	 *            target directory.
-	 * @param remoteTargetDirectory
-	 *            Remote target directory. Use an empty string to specify the
-	 *            default directory.
-	 * @param mode
-	 *            a four digit string (e.g., 0644, see "man chmod", "man open")
-	 * @throws IOException
-	 */
-	public void put(String localFile, String remoteFileName, String remoteTargetDirectory, String mode)
-			throws IOException
-	{
-		put(new String[] { localFile }, new String[] { remoteFileName }, remoteTargetDirectory, mode);
-	}
-
-	/**
-	 * Create a remote file and copy the contents of the passed byte array into
-	 * it. Uses mode 0600 for creating the remote file.
-	 * 
-	 * @param data
-	 *            the data to be copied into the remote file.
-	 * @param remoteFileName
-	 *            The name of the file which will be created in the remote
-	 *            target directory.
-	 * @param remoteTargetDirectory
-	 *            Remote target directory. Use an empty string to specify the
-	 *            default directory.
-	 * @throws IOException
-	 */
-
-	public void put(byte[] data, String remoteFileName, String remoteTargetDirectory) throws IOException
-	{
-		put(data, remoteFileName, remoteTargetDirectory, "0600");
-	}
-
-	/**
-	 * Create a remote file and copy the contents of the passed byte array into
-	 * it. The method use the specified mode when creating the file on the
-	 * remote side.
-	 * 
-	 * @param data
-	 *            the data to be copied into the remote file.
-	 * @param remoteFileName
-	 *            The name of the file which will be created in the remote
-	 *            target directory.
-	 * @param remoteTargetDirectory
-	 *            Remote target directory. Use an empty string to specify the
-	 *            default directory.
-	 * @param mode
-	 *            a four digit string (e.g., 0644, see "man chmod", "man open")
-	 * @throws IOException
-	 */
-	public void put(byte[] data, String remoteFileName, String remoteTargetDirectory, String mode) throws IOException
-	{
-		Session sess = null;
-
-		if ((remoteFileName == null) || (remoteTargetDirectory == null) || (mode == null))
-			throw new IllegalArgumentException("Null argument.");
-
-		if (mode.length() != 4)
-			throw new IllegalArgumentException("Invalid mode.");
-
-		for (int i = 0; i < mode.length(); i++)
-			if (Character.isDigit(mode.charAt(i)) == false)
-				throw new IllegalArgumentException("Invalid mode.");
-
-		remoteTargetDirectory = remoteTargetDirectory.trim();
-		remoteTargetDirectory = (remoteTargetDirectory.length() > 0) ? remoteTargetDirectory : ".";
-
-		String cmd = "scp -t -d " + remoteTargetDirectory;
-
-		try
-		{
-			sess = conn.openSession();
-			sess.execCommand(cmd);
-			sendBytes(sess, data, remoteFileName, mode);
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("Error during SCP transfer.").initCause(e);
-		}
-		finally
-		{
-			if (sess != null)
-				sess.close();
-		}
-	}
-
-	/**
-	 * Copy a set of local files to a remote directory, uses the specified mode
-	 * when creating the files on the remote side.
-	 * 
-	 * @param localFiles
-	 *            Paths and names of the local files.
-	 * @param remoteTargetDirectory
-	 *            Remote target directory. Use an empty string to specify the
-	 *            default directory.
-	 * @param mode
-	 *            a four digit string (e.g., 0644, see "man chmod", "man open")
-	 * @throws IOException
-	 */
-	public void put(String[] localFiles, String remoteTargetDirectory, String mode) throws IOException
-	{
-		put(localFiles, null, remoteTargetDirectory, mode);
-	}
-
-	public void put(String[] localFiles, String[] remoteFiles, String remoteTargetDirectory, String mode)
-			throws IOException
-	{
-		Session sess = null;
-
-		/*
-		 * remoteFiles may be null, indicating that the local filenames shall be
-		 * used
-		 */
-
-		if ((localFiles == null) || (remoteTargetDirectory == null) || (mode == null))
-			throw new IllegalArgumentException("Null argument.");
-
-		if (mode.length() != 4)
-			throw new IllegalArgumentException("Invalid mode.");
-
-		for (int i = 0; i < mode.length(); i++)
-			if (Character.isDigit(mode.charAt(i)) == false)
-				throw new IllegalArgumentException("Invalid mode.");
-
-		if (localFiles.length == 0)
-			return;
-
-		remoteTargetDirectory = remoteTargetDirectory.trim();
-		remoteTargetDirectory = (remoteTargetDirectory.length() > 0) ? remoteTargetDirectory : ".";
-
-		String cmd = "scp -t -d " + remoteTargetDirectory;
-
-		for (int i = 0; i < localFiles.length; i++)
-		{
-			if (localFiles[i] == null)
-				throw new IllegalArgumentException("Cannot accept null filename.");
-		}
-
-		try
-		{
-			sess = conn.openSession();
-			sess.execCommand(cmd);
-			sendFiles(sess, localFiles, remoteFiles, mode);
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("Error during SCP transfer.").initCause(e);
-		}
-		finally
-		{
-			if (sess != null)
-				sess.close();
-		}
-	}
-
-	/**
-	 * Download a file from the remote server to a local directory.
-	 * 
-	 * @param remoteFile
-	 *            Path and name of the remote file.
-	 * @param localTargetDirectory
-	 *            Local directory to put the downloaded file.
-	 * 
-	 * @throws IOException
-	 */
-	public void get(String remoteFile, String localTargetDirectory) throws IOException
-	{
-		get(new String[] { remoteFile }, localTargetDirectory);
-	}
-
-	/**
-	 * Download a file from the remote server and pipe its contents into an
-	 * <code>OutputStream</code>. Please note that, to enable flexible usage
-	 * of this method, the <code>OutputStream</code> will not be closed nor
-	 * flushed.
-	 * 
-	 * @param remoteFile
-	 *            Path and name of the remote file.
-	 * @param target
-	 *            OutputStream where the contents of the file will be sent to.
-	 * @throws IOException
-	 */
-	public void get(String remoteFile, OutputStream target) throws IOException
-	{
-		get(new String[] { remoteFile }, new OutputStream[] { target });
-	}
-
-	private void get(String remoteFiles[], OutputStream[] targets) throws IOException
-	{
-		Session sess = null;
-
-		if ((remoteFiles == null) || (targets == null))
-			throw new IllegalArgumentException("Null argument.");
-
-		if (remoteFiles.length != targets.length)
-			throw new IllegalArgumentException("Length of arguments does not match.");
-
-		if (remoteFiles.length == 0)
-			return;
-
-		String cmd = "scp -f";
-
-		for (int i = 0; i < remoteFiles.length; i++)
-		{
-			if (remoteFiles[i] == null)
-				throw new IllegalArgumentException("Cannot accept null filename.");
-
-			String tmp = remoteFiles[i].trim();
-
-			if (tmp.length() == 0)
-				throw new IllegalArgumentException("Cannot accept empty filename.");
-
-			cmd += (" " + tmp);
-		}
-
-		try
-		{
-			sess = conn.openSession();
-			sess.execCommand(cmd);
-			receiveFiles(sess, targets);
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("Error during SCP transfer.").initCause(e);
-		}
-		finally
-		{
-			if (sess != null)
-				sess.close();
-		}
-	}
-
-	/**
-	 * Download a set of files from the remote server to a local directory.
-	 * 
-	 * @param remoteFiles
-	 *            Paths and names of the remote files.
-	 * @param localTargetDirectory
-	 *            Local directory to put the downloaded files.
-	 * 
-	 * @throws IOException
-	 */
-	public void get(String remoteFiles[], String localTargetDirectory) throws IOException
-	{
-		Session sess = null;
-
-		if ((remoteFiles == null) || (localTargetDirectory == null))
-			throw new IllegalArgumentException("Null argument.");
-
-		if (remoteFiles.length == 0)
-			return;
-
-		String cmd = "scp -f";
-
-		for (int i = 0; i < remoteFiles.length; i++)
-		{
-			if (remoteFiles[i] == null)
-				throw new IllegalArgumentException("Cannot accept null filename.");
-
-			String tmp = remoteFiles[i].trim();
-
-			if (tmp.length() == 0)
-				throw new IllegalArgumentException("Cannot accept empty filename.");
-
-			cmd += (" " + tmp);
-		}
-
-		try
-		{
-			sess = conn.openSession();
-			sess.execCommand(cmd);
-			receiveFiles(sess, remoteFiles, localTargetDirectory);
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("Error during SCP transfer.").initCause(e);
-		}
-		finally
-		{
-			if (sess != null)
-				sess.close();
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/SFTPException.java b/app/src/main/java/com/trilead/ssh2/SFTPException.java
deleted file mode 100644
index d97723f..0000000
--- a/app/src/main/java/com/trilead/ssh2/SFTPException.java
+++ /dev/null
@@ -1,91 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.IOException;
-
-import com.trilead.ssh2.sftp.ErrorCodes;
-
-
-/**
- * Used in combination with the SFTPv3Client. This exception wraps
- * error messages sent by the SFTP server.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPException.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class SFTPException extends IOException
-{
-	private static final long serialVersionUID = 578654644222421811L;
-
-	private final String sftpErrorMessage;
-	private final int sftpErrorCode;
-
-	private static String constructMessage(String s, int errorCode)
-	{
-		String[] detail = ErrorCodes.getDescription(errorCode);
-
-		if (detail == null)
-			return s + " (UNKNOW SFTP ERROR CODE)";
-
-		return s + " (" + detail[0] + ": " + detail[1] + ")";
-	}
-
-	SFTPException(String msg, int errorCode)
-	{
-		super(constructMessage(msg, errorCode));
-		sftpErrorMessage = msg;
-		sftpErrorCode = errorCode;
-	}
-
-	/**
-	 * Get the error message sent by the server. Often, this
-	 * message does not help a lot (e.g., "failure").
-	 * 
-	 * @return the plain string as sent by the server.
-	 */
-	public String getServerErrorMessage()
-	{
-		return sftpErrorMessage;
-	}
-
-	/**
-	 * Get the error code sent by the server.
-	 * 
-	 * @return an error code as defined in the SFTP specs.
-	 */
-	public int getServerErrorCode()
-	{
-		return sftpErrorCode;
-	}
-
-	/**
-	 * Get the symbolic name of the error code as given in the SFTP specs.
-	 * 
-	 * @return e.g., "SSH_FX_INVALID_FILENAME".
-	 */
-	public String getServerErrorCodeSymbol()
-	{
-		String[] detail = ErrorCodes.getDescription(sftpErrorCode);
-
-		if (detail == null)
-			return "UNKNOW SFTP ERROR CODE " + sftpErrorCode;
-
-		return detail[0];
-	}
-
-	/**
-	 * Get the description of the error code as given in the SFTP specs.
-	 * 
-	 * @return e.g., "The filename is not valid."
-	 */
-	public String getServerErrorCodeVerbose()
-	{
-		String[] detail = ErrorCodes.getDescription(sftpErrorCode);
-
-		if (detail == null)
-			return "The error code " + sftpErrorCode + " is unknown.";
-
-		return detail[1];
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/SFTPv3Client.java b/app/src/main/java/com/trilead/ssh2/SFTPv3Client.java
deleted file mode 100644
index 06796e9..0000000
--- a/app/src/main/java/com/trilead/ssh2/SFTPv3Client.java
+++ /dev/null
@@ -1,1388 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.BufferedOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.PrintStream;
-import java.nio.charset.Charset;
-import java.util.HashMap;
-import java.util.Vector;
-
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.packets.TypesWriter;
-import com.trilead.ssh2.sftp.AttribFlags;
-import com.trilead.ssh2.sftp.ErrorCodes;
-import com.trilead.ssh2.sftp.Packet;
-
-
-/**
- * A <code>SFTPv3Client</code> represents a SFTP (protocol version 3)
- * client connection tunnelled over a SSH-2 connection. This is a very simple
- * (synchronous) implementation.
- * <p>
- * Basically, most methods in this class map directly to one of
- * the packet types described in draft-ietf-secsh-filexfer-02.txt.
- * <p>
- * Note: this is experimental code.
- * <p>
- * Error handling: the methods of this class throw IOExceptions. However, unless
- * there is catastrophic failure, exceptions of the type {@link SFTPv3Client} will
- * be thrown (a subclass of IOException). Therefore, you can implement more verbose
- * behavior by checking if a thrown exception if of this type. If yes, then you
- * can cast the exception and access detailed information about the failure. 
- * <p>
- * Notes about file names, directory names and paths, copy-pasted
- * from the specs:
- * <ul>
- * <li>SFTP v3 represents file names as strings. File names are
- * assumed to use the slash ('/') character as a directory separator.</li>
- * <li>File names starting with a slash are "absolute", and are relative to
- * the root of the file system.  Names starting with any other character
- * are relative to the user's default directory (home directory).</li>
- * <li>Servers SHOULD interpret a path name component ".." as referring to
- * the parent directory, and "." as referring to the current directory.
- * If the server implementation limits access to certain parts of the
- * file system, it must be extra careful in parsing file names when
- * enforcing such restrictions.  There have been numerous reported
- * security bugs where a ".." in a path name has allowed access outside
- * the intended area.</li>
- * <li>An empty path name is valid, and it refers to the user's default
- * directory (usually the user's home directory).</li>
- * </ul>
- * <p>
- * If you are still not tired then please go on and read the comment for
- * {@link #setCharset(String)}.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPv3Client.java,v 1.3 2008/04/01 12:38:09 cplattne Exp $
- */
-public class SFTPv3Client
-{
-	final Connection conn;
-	final Session sess;
-	final PrintStream debug;
-
-	boolean flag_closed = false;
-
-	InputStream is;
-	OutputStream os;
-
-	int protocol_version = 0;
-	HashMap server_extensions = new HashMap();
-
-	int next_request_id = 1000;
-
-	String charsetName = null;
-
-	/**
-	 * Create a SFTP v3 client.
-	 * 
-	 * @param conn The underlying SSH-2 connection to be used.
-	 * @param debug
-	 * @throws IOException
-	 * 
-	 * @deprecated this constructor (debug version) will disappear in the future,
-	 *             use {@link #SFTPv3Client(Connection)} instead.
-	 */
-	public SFTPv3Client(Connection conn, PrintStream debug) throws IOException
-	{
-		if (conn == null)
-			throw new IllegalArgumentException("Cannot accept null argument!");
-
-		this.conn = conn;
-		this.debug = debug;
-
-		if (debug != null)
-			debug.println("Opening session and starting SFTP subsystem.");
-
-		sess = conn.openSession();
-		sess.startSubSystem("sftp");
-
-		is = sess.getStdout();
-		os = new BufferedOutputStream(sess.getStdin(), 2048);
-
-		if ((is == null) || (os == null))
-			throw new IOException("There is a problem with the streams of the underlying channel.");
-
-		init();
-	}
-
-	/**
-	 * Create a SFTP v3 client.
-	 * 
-	 * @param conn The underlying SSH-2 connection to be used.
-	 * @throws IOException
-	 */
-	public SFTPv3Client(Connection conn) throws IOException
-	{
-		this(conn, null);
-	}
-
-	/**
-	 * Set the charset used to convert between Java Unicode Strings and byte encodings
-	 * used by the server for paths and file names. Unfortunately, the SFTP v3 draft
-	 * says NOTHING about such conversions (well, with the exception of error messages
-	 * which have to be in UTF-8). Newer drafts specify to use UTF-8 for file names
-	 * (if I remember correctly). However, a quick test using OpenSSH serving a EXT-3
-	 * filesystem has shown that UTF-8 seems to be a bad choice for SFTP v3 (tested with
-	 * filenames containing german umlauts). "windows-1252" seems to work better for Europe.
-	 * Luckily, "windows-1252" is the platform default in my case =).
-	 * <p>
-	 * If you don't set anything, then the platform default will be used (this is the default
-	 * behavior).
-	 * 
-	 * @see #getCharset()
-	 * 
-	 * @param charset the name of the charset to be used or <code>null</code> to use the platform's
-	 *        default encoding.
-	 * @throws IOException
-	 */
-	public void setCharset(String charset) throws IOException
-	{
-		if (charset == null)
-		{
-			charsetName = charset;
-			return;
-		}
-
-		try
-		{
-			Charset.forName(charset);
-		}
-		catch (Exception e)
-		{
-			throw (IOException) new IOException("This charset is not supported").initCause(e);
-		}
-		charsetName = charset;
-	}
-
-	/**
-	 * The currently used charset for filename encoding/decoding.
-	 * 
-	 * @see #setCharset(String)
-	 * 
-	 * @return The name of the charset (<code>null</code> if the platform's default charset is being used)
-	 */
-	public String getCharset()
-	{
-		return charsetName;
-	}
-
-	private final void checkHandleValidAndOpen(SFTPv3FileHandle handle) throws IOException
-	{
-		if (handle.client != this)
-			throw new IOException("The file handle was created with another SFTPv3FileHandle instance.");
-
-		if (handle.isClosed == true)
-			throw new IOException("The file handle is closed.");
-	}
-
-	private final void sendMessage(int type, int requestId, byte[] msg, int off, int len) throws IOException
-	{
-		int msglen = len + 1;
-
-		if (type != Packet.SSH_FXP_INIT)
-			msglen += 4;
-
-		os.write(msglen >> 24);
-		os.write(msglen >> 16);
-		os.write(msglen >> 8);
-		os.write(msglen);
-		os.write(type);
-
-		if (type != Packet.SSH_FXP_INIT)
-		{
-			os.write(requestId >> 24);
-			os.write(requestId >> 16);
-			os.write(requestId >> 8);
-			os.write(requestId);
-		}
-
-		os.write(msg, off, len);
-		os.flush();
-	}
-
-	private final void sendMessage(int type, int requestId, byte[] msg) throws IOException
-	{
-		sendMessage(type, requestId, msg, 0, msg.length);
-	}
-
-	private final void readBytes(byte[] buff, int pos, int len) throws IOException
-	{
-		while (len > 0)
-		{
-			int count = is.read(buff, pos, len);
-			if (count < 0)
-				throw new IOException("Unexpected end of sftp stream.");
-			if ((count == 0) || (count > len))
-				throw new IOException("Underlying stream implementation is bogus!");
-			len -= count;
-			pos += count;
-		}
-	}
-
-	/**
-	 * Read a message and guarantee that the <b>contents</b> is not larger than
-	 * <code>maxlen</code> bytes.
-	 * <p>
-	 * Note: receiveMessage(34000) actually means that the message may be up to 34004
-	 * bytes (the length attribute preceeding the contents is 4 bytes).
-	 * 
-	 * @param maxlen
-	 * @return the message contents
-	 * @throws IOException
-	 */
-	private final byte[] receiveMessage(int maxlen) throws IOException
-	{
-		byte[] msglen = new byte[4];
-
-		readBytes(msglen, 0, 4);
-
-		int len = (((msglen[0] & 0xff) << 24) | ((msglen[1] & 0xff) << 16) | ((msglen[2] & 0xff) << 8) | (msglen[3] & 0xff));
-
-		if ((len > maxlen) || (len <= 0))
-			throw new IOException("Illegal sftp packet len: " + len);
-
-		byte[] msg = new byte[len];
-
-		readBytes(msg, 0, len);
-
-		return msg;
-	}
-
-	private final int generateNextRequestID()
-	{
-		synchronized (this)
-		{
-			return next_request_id++;
-		}
-	}
-
-	private final void closeHandle(byte[] handle) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(handle, 0, handle.length);
-
-		sendMessage(Packet.SSH_FXP_CLOSE, req_id, tw.getBytes());
-
-		expectStatusOKMessage(req_id);
-	}
-
-	private SFTPv3FileAttributes readAttrs(TypesReader tr) throws IOException
-	{
-		/*
-		 * uint32   flags
-		 * uint64   size           present only if flag SSH_FILEXFER_ATTR_SIZE
-		 * uint32   uid            present only if flag SSH_FILEXFER_ATTR_V3_UIDGID
-		 * uint32   gid            present only if flag SSH_FILEXFER_ATTR_V3_UIDGID
-		 * uint32   permissions    present only if flag SSH_FILEXFER_ATTR_PERMISSIONS
-		 * uint32   atime          present only if flag SSH_FILEXFER_ATTR_V3_ACMODTIME
-		 * uint32   mtime          present only if flag SSH_FILEXFER_ATTR_V3_ACMODTIME
-		 * uint32   extended_count present only if flag SSH_FILEXFER_ATTR_EXTENDED
-		 * string   extended_type
-		 * string   extended_data
-		 * ...      more extended data (extended_type - extended_data pairs),
-		 *          so that number of pairs equals extended_count
-		 */
-
-		SFTPv3FileAttributes fa = new SFTPv3FileAttributes();
-
-		int flags = tr.readUINT32();
-
-		if ((flags & AttribFlags.SSH_FILEXFER_ATTR_SIZE) != 0)
-		{
-			if (debug != null)
-				debug.println("SSH_FILEXFER_ATTR_SIZE");
-			fa.size = new Long(tr.readUINT64());
-		}
-
-		if ((flags & AttribFlags.SSH_FILEXFER_ATTR_V3_UIDGID) != 0)
-		{
-			if (debug != null)
-				debug.println("SSH_FILEXFER_ATTR_V3_UIDGID");
-			fa.uid = new Integer(tr.readUINT32());
-			fa.gid = new Integer(tr.readUINT32());
-		}
-
-		if ((flags & AttribFlags.SSH_FILEXFER_ATTR_PERMISSIONS) != 0)
-		{
-			if (debug != null)
-				debug.println("SSH_FILEXFER_ATTR_PERMISSIONS");
-			fa.permissions = new Integer(tr.readUINT32());
-		}
-
-		if ((flags & AttribFlags.SSH_FILEXFER_ATTR_V3_ACMODTIME) != 0)
-		{
-			if (debug != null)
-				debug.println("SSH_FILEXFER_ATTR_V3_ACMODTIME");
-			fa.atime = new Long(((long)tr.readUINT32()) & 0xffffffffl);
-			fa.mtime = new Long(((long)tr.readUINT32()) & 0xffffffffl);
-
-		}
-
-		if ((flags & AttribFlags.SSH_FILEXFER_ATTR_EXTENDED) != 0)
-		{
-			int count = tr.readUINT32();
-
-			if (debug != null)
-				debug.println("SSH_FILEXFER_ATTR_EXTENDED (" + count + ")");
-
-			/* Read it anyway to detect corrupt packets */
-
-			while (count > 0)
-			{
-				tr.readByteString();
-				tr.readByteString();
-				count--;
-			}
-		}
-
-		return fa;
-	}
-
-	/**
-	 * Retrieve the file attributes of an open file.
-	 * 
-	 * @param handle a SFTPv3FileHandle handle.
-	 * @return a SFTPv3FileAttributes object.
-	 * @throws IOException
-	 */
-	public SFTPv3FileAttributes fstat(SFTPv3FileHandle handle) throws IOException
-	{
-		checkHandleValidAndOpen(handle);
-
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(handle.fileHandle, 0, handle.fileHandle.length);
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_FSTAT...");
-			debug.flush();
-		}
-
-		sendMessage(Packet.SSH_FXP_FSTAT, req_id, tw.getBytes());
-
-		byte[] resp = receiveMessage(34000);
-
-		if (debug != null)
-		{
-			debug.println("Got REPLY.");
-			debug.flush();
-		}
-
-		TypesReader tr = new TypesReader(resp);
-
-		int t = tr.readByte();
-
-		int rep_id = tr.readUINT32();
-		if (rep_id != req_id)
-			throw new IOException("The server sent an invalid id field.");
-
-		if (t == Packet.SSH_FXP_ATTRS)
-		{
-			return readAttrs(tr);
-		}
-
-		if (t != Packet.SSH_FXP_STATUS)
-			throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-		int errorCode = tr.readUINT32();
-
-		throw new SFTPException(tr.readString(), errorCode);
-	}
-
-	private SFTPv3FileAttributes statBoth(String path, int statMethod) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(path, charsetName);
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_STAT/SSH_FXP_LSTAT...");
-			debug.flush();
-		}
-
-		sendMessage(statMethod, req_id, tw.getBytes());
-
-		byte[] resp = receiveMessage(34000);
-
-		if (debug != null)
-		{
-			debug.println("Got REPLY.");
-			debug.flush();
-		}
-
-		TypesReader tr = new TypesReader(resp);
-
-		int t = tr.readByte();
-
-		int rep_id = tr.readUINT32();
-		if (rep_id != req_id)
-			throw new IOException("The server sent an invalid id field.");
-
-		if (t == Packet.SSH_FXP_ATTRS)
-		{
-			return readAttrs(tr);
-		}
-
-		if (t != Packet.SSH_FXP_STATUS)
-			throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-		int errorCode = tr.readUINT32();
-
-		throw new SFTPException(tr.readString(), errorCode);
-	}
-
-	/**
-	 * Retrieve the file attributes of a file. This method
-	 * follows symbolic links on the server.
-	 * 
-	 * @see #lstat(String)
-	 * 
-	 * @param path See the {@link SFTPv3Client comment} for the class for more details.
-	 * @return a SFTPv3FileAttributes object.
-	 * @throws IOException
-	 */
-	public SFTPv3FileAttributes stat(String path) throws IOException
-	{
-		return statBoth(path, Packet.SSH_FXP_STAT);
-	}
-
-	/**
-	 * Retrieve the file attributes of a file. This method
-	 * does NOT follow symbolic links on the server.
-	 * 
-	 * @see #stat(String)
-	 * 
-	 * @param path See the {@link SFTPv3Client comment} for the class for more details.
-	 * @return a SFTPv3FileAttributes object.
-	 * @throws IOException
-	 */
-	public SFTPv3FileAttributes lstat(String path) throws IOException
-	{
-		return statBoth(path, Packet.SSH_FXP_LSTAT);
-	}
-
-	/**
-	 * Read the target of a symbolic link.
-	 * 
-	 * @param path See the {@link SFTPv3Client comment} for the class for more details.
-	 * @return The target of the link.
-	 * @throws IOException
-	 */
-	public String readLink(String path) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(path, charsetName);
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_READLINK...");
-			debug.flush();
-		}
-
-		sendMessage(Packet.SSH_FXP_READLINK, req_id, tw.getBytes());
-
-		byte[] resp = receiveMessage(34000);
-
-		if (debug != null)
-		{
-			debug.println("Got REPLY.");
-			debug.flush();
-		}
-
-		TypesReader tr = new TypesReader(resp);
-
-		int t = tr.readByte();
-
-		int rep_id = tr.readUINT32();
-		if (rep_id != req_id)
-			throw new IOException("The server sent an invalid id field.");
-
-		if (t == Packet.SSH_FXP_NAME)
-		{
-			int count = tr.readUINT32();
-
-			if (count != 1)
-				throw new IOException("The server sent an invalid SSH_FXP_NAME packet.");
-
-			return tr.readString(charsetName);
-		}
-
-		if (t != Packet.SSH_FXP_STATUS)
-			throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-		int errorCode = tr.readUINT32();
-
-		throw new SFTPException(tr.readString(), errorCode);
-	}
-
-	private void expectStatusOKMessage(int id) throws IOException
-	{
-		byte[] resp = receiveMessage(34000);
-
-		if (debug != null)
-		{
-			debug.println("Got REPLY.");
-			debug.flush();
-		}
-
-		TypesReader tr = new TypesReader(resp);
-
-		int t = tr.readByte();
-
-		int rep_id = tr.readUINT32();
-		if (rep_id != id)
-			throw new IOException("The server sent an invalid id field.");
-
-		if (t != Packet.SSH_FXP_STATUS)
-			throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-		int errorCode = tr.readUINT32();
-
-		if (errorCode == ErrorCodes.SSH_FX_OK)
-			return;
-
-		throw new SFTPException(tr.readString(), errorCode);
-	}
-
-	/**
-	 *  Modify the attributes of a file. Used for operations such as changing
-	 *  the ownership, permissions or access times, as well as for truncating a file.
-	 * 
-	 * @param path See the {@link SFTPv3Client comment} for the class for more details.
-	 * @param attr A SFTPv3FileAttributes object. Specifies the modifications to be
-	 *             made to the attributes of the file. Empty fields will be ignored.
-	 * @throws IOException
-	 */
-	public void setstat(String path, SFTPv3FileAttributes attr) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(path, charsetName);
-		tw.writeBytes(createAttrs(attr));
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_SETSTAT...");
-			debug.flush();
-		}
-
-		sendMessage(Packet.SSH_FXP_SETSTAT, req_id, tw.getBytes());
-
-		expectStatusOKMessage(req_id);
-	}
-
-	/**
-	 * 	Modify the attributes of a file. Used for operations such as changing
-	 *  the ownership, permissions or access times, as well as for truncating a file.
-	 * 
-	 * @param handle a SFTPv3FileHandle handle
-	 * @param attr A SFTPv3FileAttributes object. Specifies the modifications to be
-	 *             made to the attributes of the file. Empty fields will be ignored.
-	 * @throws IOException
-	 */
-	public void fsetstat(SFTPv3FileHandle handle, SFTPv3FileAttributes attr) throws IOException
-	{
-		checkHandleValidAndOpen(handle);
-
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(handle.fileHandle, 0, handle.fileHandle.length);
-		tw.writeBytes(createAttrs(attr));
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_FSETSTAT...");
-			debug.flush();
-		}
-
-		sendMessage(Packet.SSH_FXP_FSETSTAT, req_id, tw.getBytes());
-
-		expectStatusOKMessage(req_id);
-	}
-
-	/**
-	 * Create a symbolic link on the server. Creates a link "src" that points
-	 * to "target".
-	 * 
-	 * @param src See the {@link SFTPv3Client comment} for the class for more details.
-	 * @param target See the {@link SFTPv3Client comment} for the class for more details.
-	 * @throws IOException
-	 */
-	public void createSymlink(String src, String target) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		/* Either I am too stupid to understand the SFTP draft
-		 * or the OpenSSH guys changed the semantics of src and target.
-		 */
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(target, charsetName);
-		tw.writeString(src, charsetName);
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_SYMLINK...");
-			debug.flush();
-		}
-
-		sendMessage(Packet.SSH_FXP_SYMLINK, req_id, tw.getBytes());
-
-		expectStatusOKMessage(req_id);
-	}
-
-	/**
-	 * Have the server canonicalize any given path name to an absolute path.
-	 * This is useful for converting path names containing ".." components or
-	 * relative pathnames without a leading slash into absolute paths.
-	 * 
-	 * @param path See the {@link SFTPv3Client comment} for the class for more details.
-	 * @return An absolute path.
-	 * @throws IOException
-	 */
-	public String canonicalPath(String path) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(path, charsetName);
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_REALPATH...");
-			debug.flush();
-		}
-
-		sendMessage(Packet.SSH_FXP_REALPATH, req_id, tw.getBytes());
-
-		byte[] resp = receiveMessage(34000);
-
-		if (debug != null)
-		{
-			debug.println("Got REPLY.");
-			debug.flush();
-		}
-
-		TypesReader tr = new TypesReader(resp);
-
-		int t = tr.readByte();
-
-		int rep_id = tr.readUINT32();
-		if (rep_id != req_id)
-			throw new IOException("The server sent an invalid id field.");
-
-		if (t == Packet.SSH_FXP_NAME)
-		{
-			int count = tr.readUINT32();
-
-			if (count != 1)
-				throw new IOException("The server sent an invalid SSH_FXP_NAME packet.");
-
-			return tr.readString(charsetName);
-		}
-
-		if (t != Packet.SSH_FXP_STATUS)
-			throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-		int errorCode = tr.readUINT32();
-
-		throw new SFTPException(tr.readString(), errorCode);
-	}
-
-	private final Vector scanDirectory(byte[] handle) throws IOException
-	{
-		Vector files = new Vector();
-
-		while (true)
-		{
-			int req_id = generateNextRequestID();
-
-			TypesWriter tw = new TypesWriter();
-			tw.writeString(handle, 0, handle.length);
-
-			if (debug != null)
-			{
-				debug.println("Sending SSH_FXP_READDIR...");
-				debug.flush();
-			}
-
-			sendMessage(Packet.SSH_FXP_READDIR, req_id, tw.getBytes());
-		
-			/* Some servers send here a packet with size > 34000 */
-			/* To whom it may concern: please learn to read the specs. */
-			
-			byte[] resp = receiveMessage(65536);
-
-			if (debug != null)
-			{
-				debug.println("Got REPLY.");
-				debug.flush();
-			}
-
-			TypesReader tr = new TypesReader(resp);
-
-			int t = tr.readByte();
-
-			int rep_id = tr.readUINT32();
-			if (rep_id != req_id)
-				throw new IOException("The server sent an invalid id field.");
-
-			if (t == Packet.SSH_FXP_NAME)
-			{
-				int count = tr.readUINT32();
-
-				if (debug != null)
-					debug.println("Parsing " + count + " name entries...");
-
-				while (count > 0)
-				{
-					SFTPv3DirectoryEntry dirEnt = new SFTPv3DirectoryEntry();
-
-					dirEnt.filename = tr.readString(charsetName);
-					dirEnt.longEntry = tr.readString(charsetName);
-
-					dirEnt.attributes = readAttrs(tr);
-					files.addElement(dirEnt);
-
-					if (debug != null)
-						debug.println("File: '" + dirEnt.filename + "'");
-					count--;
-				}
-				continue;
-			}
-
-			if (t != Packet.SSH_FXP_STATUS)
-				throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-			int errorCode = tr.readUINT32();
-
-			if (errorCode == ErrorCodes.SSH_FX_EOF)
-				return files;
-
-			throw new SFTPException(tr.readString(), errorCode);
-		}
-	}
-
-	private final byte[] openDirectory(String path) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(path, charsetName);
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_OPENDIR...");
-			debug.flush();
-		}
-
-		sendMessage(Packet.SSH_FXP_OPENDIR, req_id, tw.getBytes());
-
-		byte[] resp = receiveMessage(34000);
-
-		TypesReader tr = new TypesReader(resp);
-
-		int t = tr.readByte();
-
-		int rep_id = tr.readUINT32();
-		if (rep_id != req_id)
-			throw new IOException("The server sent an invalid id field.");
-
-		if (t == Packet.SSH_FXP_HANDLE)
-		{
-			if (debug != null)
-			{
-				debug.println("Got SSH_FXP_HANDLE.");
-				debug.flush();
-			}
-
-			byte[] handle = tr.readByteString();
-			return handle;
-		}
-
-		if (t != Packet.SSH_FXP_STATUS)
-			throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-		int errorCode = tr.readUINT32();
-		String errorMessage = tr.readString();
-
-		throw new SFTPException(errorMessage, errorCode);
-	}
-
-	private final String expandString(byte[] b, int off, int len)
-	{
-		StringBuffer sb = new StringBuffer();
-
-		for (int i = 0; i < len; i++)
-		{
-			int c = b[off + i] & 0xff;
-
-			if ((c >= 32) && (c <= 126))
-			{
-				sb.append((char) c);
-			}
-			else
-			{
-				sb.append("{0x" + Integer.toHexString(c) + "}");
-			}
-		}
-
-		return sb.toString();
-	}
-
-	private void init() throws IOException
-	{
-		/* Send SSH_FXP_INIT (version 3) */
-
-		final int client_version = 3;
-
-		if (debug != null)
-			debug.println("Sending SSH_FXP_INIT (" + client_version + ")...");
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeUINT32(client_version);
-		sendMessage(Packet.SSH_FXP_INIT, 0, tw.getBytes());
-
-		/* Receive SSH_FXP_VERSION */
-
-		if (debug != null)
-			debug.println("Waiting for SSH_FXP_VERSION...");
-
-		TypesReader tr = new TypesReader(receiveMessage(34000)); /* Should be enough for any reasonable server */
-
-		int type = tr.readByte();
-
-		if (type != Packet.SSH_FXP_VERSION)
-		{
-			throw new IOException("The server did not send a SSH_FXP_VERSION packet (got " + type + ")");
-		}
-
-		protocol_version = tr.readUINT32();
-
-		if (debug != null)
-			debug.println("SSH_FXP_VERSION: protocol_version = " + protocol_version);
-
-		if (protocol_version != 3)
-			throw new IOException("Server version " + protocol_version + " is currently not supported");
-
-		/* Read and save extensions (if any) for later use */
-
-		while (tr.remain() != 0)
-		{
-			String name = tr.readString();
-			byte[] value = tr.readByteString();
-			server_extensions.put(name, value);
-
-			if (debug != null)
-				debug.println("SSH_FXP_VERSION: extension: " + name + " = '" + expandString(value, 0, value.length)
-						+ "'");
-		}
-	}
-
-	/**
-	 * Returns the negotiated SFTP protocol version between the client and the server.
-	 * 
-	 * @return SFTP protocol version, i.e., "3".
-	 * 
-	 */
-	public int getProtocolVersion()
-	{
-		return protocol_version;
-	}
-
-	/**
-	 * Close this SFTP session. NEVER forget to call this method to free up
-	 * resources - even if you got an exception from one of the other methods.
-	 * Sometimes these other methods may throw an exception, saying that the
-	 * underlying channel is closed (this can happen, e.g., if the other server
-	 * sent a close message.) However, as long as you have not called the
-	 * <code>close()</code> method, you are likely wasting resources.
-	 * 
-	 */
-	public void close()
-	{
-		sess.close();
-	}
-
-	/**
-	 * List the contents of a directory.
-	 * 
-	 * @param dirName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @return A Vector containing {@link SFTPv3DirectoryEntry} objects.
-	 * @throws IOException
-	 */
-	public Vector ls(String dirName) throws IOException
-	{
-		byte[] handle = openDirectory(dirName);
-		Vector result = scanDirectory(handle);
-		closeHandle(handle);
-		return result;
-	}
-
-	/**
-	 * Create a new directory.
-	 * 
-	 * @param dirName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @param posixPermissions the permissions for this directory, e.g., "0700" (remember that
-	 *                         this is octal noation). The server will likely apply a umask.
-	 * 
-	 * @throws IOException
-	 */
-	public void mkdir(String dirName, int posixPermissions) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(dirName, charsetName);
-		tw.writeUINT32(AttribFlags.SSH_FILEXFER_ATTR_PERMISSIONS);
-		tw.writeUINT32(posixPermissions);
-
-		sendMessage(Packet.SSH_FXP_MKDIR, req_id, tw.getBytes());
-
-		expectStatusOKMessage(req_id);
-	}
-
-	/**
-	 * Remove a file.
-	 * 
-	 * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @throws IOException
-	 */
-	public void rm(String fileName) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(fileName, charsetName);
-
-		sendMessage(Packet.SSH_FXP_REMOVE, req_id, tw.getBytes());
-
-		expectStatusOKMessage(req_id);
-	}
-
-	/**
-	 * Remove an empty directory. 
-	 * 
-	 * @param dirName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @throws IOException
-	 */
-	public void rmdir(String dirName) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(dirName, charsetName);
-
-		sendMessage(Packet.SSH_FXP_RMDIR, req_id, tw.getBytes());
-
-		expectStatusOKMessage(req_id);
-	}
-
-	/**
-	 * Move a file or directory.
-	 * 
-	 * @param oldPath See the {@link SFTPv3Client comment} for the class for more details.
-	 * @param newPath See the {@link SFTPv3Client comment} for the class for more details.
-	 * @throws IOException
-	 */
-	public void mv(String oldPath, String newPath) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(oldPath, charsetName);
-		tw.writeString(newPath, charsetName);
-
-		sendMessage(Packet.SSH_FXP_RENAME, req_id, tw.getBytes());
-
-		expectStatusOKMessage(req_id);
-	}
-
-	/**
-	 * Open a file for reading.
-	 * 
-	 * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @return a SFTPv3FileHandle handle
-	 * @throws IOException
-	 */
-	public SFTPv3FileHandle openFileRO(String fileName) throws IOException
-	{
-		return openFile(fileName, 0x00000001, null); // SSH_FXF_READ	
-	}
-
-	/**
-	 * Open a file for reading and writing.
-	 * 
-	 * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @return a SFTPv3FileHandle handle
-	 * @throws IOException
-	 */
-	public SFTPv3FileHandle openFileRW(String fileName) throws IOException
-	{
-		return openFile(fileName, 0x00000003, null); // SSH_FXF_READ | SSH_FXF_WRITE
-	}
-
-	// Append is broken (already in the specification, because there is no way to
-	// send a write operation (what offset to use??))
-	//	public SFTPv3FileHandle openFileRWAppend(String fileName) throws IOException
-	//	{
-	//		return openFile(fileName, 0x00000007, null); // SSH_FXF_READ | SSH_FXF_WRITE | SSH_FXF_APPEND
-	//	}
-
-	/**
-	 * Create a file and open it for reading and writing.
-	 * Same as {@link #createFile(String, SFTPv3FileAttributes) createFile(fileName, null)}.
-	 * 
-	 * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @return a SFTPv3FileHandle handle
-	 * @throws IOException
-	 */
-	public SFTPv3FileHandle createFile(String fileName) throws IOException
-	{
-		return createFile(fileName, null);
-	}
-
-	/**
-	 * Create a file and open it for reading and writing.
-	 * You can specify the default attributes of the file (the server may or may
-	 * not respect your wishes).
-	 * 
-	 * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @param attr may be <code>null</code> to use server defaults. Probably only
-	 *             the <code>uid</code>, <code>gid</code> and <code>permissions</code>
-	 *             (remember the server may apply a umask) entries of the {@link SFTPv3FileHandle}
-	 *             structure make sense. You need only to set those fields where you want
-	 *             to override the server's defaults.
-	 * @return a SFTPv3FileHandle handle
-	 * @throws IOException
-	 */
-	public SFTPv3FileHandle createFile(String fileName, SFTPv3FileAttributes attr) throws IOException
-	{
-		return openFile(fileName, 0x00000008 | 0x00000003, attr); // SSH_FXF_CREAT | SSH_FXF_READ | SSH_FXF_WRITE
-	}
-
-	/**
-	 * Create a file (truncate it if it already exists) and open it for reading and writing.
-	 * Same as {@link #createFileTruncate(String, SFTPv3FileAttributes) createFileTruncate(fileName, null)}.
-	 * 
-	 * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @return a SFTPv3FileHandle handle
-	 * @throws IOException
-	 */
-	public SFTPv3FileHandle createFileTruncate(String fileName) throws IOException
-	{
-		return createFileTruncate(fileName, null);
-	}
-
-	/**
-	 * reate a file (truncate it if it already exists) and open it for reading and writing.
-	 * You can specify the default attributes of the file (the server may or may
-	 * not respect your wishes).
-	 * 
-	 * @param fileName See the {@link SFTPv3Client comment} for the class for more details.
-	 * @param attr may be <code>null</code> to use server defaults. Probably only
-	 *             the <code>uid</code>, <code>gid</code> and <code>permissions</code>
-	 *             (remember the server may apply a umask) entries of the {@link SFTPv3FileHandle}
-	 *             structure make sense. You need only to set those fields where you want
-	 *             to override the server's defaults.
-	 * @return a SFTPv3FileHandle handle
-	 * @throws IOException
-	 */
-	public SFTPv3FileHandle createFileTruncate(String fileName, SFTPv3FileAttributes attr) throws IOException
-	{
-		return openFile(fileName, 0x00000018 | 0x00000003, attr); // SSH_FXF_CREAT | SSH_FXF_TRUNC | SSH_FXF_READ | SSH_FXF_WRITE
-	}
-
-	private byte[] createAttrs(SFTPv3FileAttributes attr)
-	{
-		TypesWriter tw = new TypesWriter();
-
-		int attrFlags = 0;
-
-		if (attr == null)
-		{
-			tw.writeUINT32(0);
-		}
-		else
-		{
-			if (attr.size != null)
-				attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_SIZE;
-
-			if ((attr.uid != null) && (attr.gid != null))
-				attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_V3_UIDGID;
-
-			if (attr.permissions != null)
-				attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_PERMISSIONS;
-
-			if ((attr.atime != null) && (attr.mtime != null))
-				attrFlags = attrFlags | AttribFlags.SSH_FILEXFER_ATTR_V3_ACMODTIME;
-
-			tw.writeUINT32(attrFlags);
-
-			if (attr.size != null)
-				tw.writeUINT64(attr.size.longValue());
-
-			if ((attr.uid != null) && (attr.gid != null))
-			{
-				tw.writeUINT32(attr.uid.intValue());
-				tw.writeUINT32(attr.gid.intValue());
-			}
-
-			if (attr.permissions != null)
-				tw.writeUINT32(attr.permissions.intValue());
-
-			if ((attr.atime != null) && (attr.mtime != null))
-			{
-				tw.writeUINT32(attr.atime.intValue());
-				tw.writeUINT32(attr.mtime.intValue());
-			}
-		}
-
-		return tw.getBytes();
-	}
-
-	private SFTPv3FileHandle openFile(String fileName, int flags, SFTPv3FileAttributes attr) throws IOException
-	{
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(fileName, charsetName);
-		tw.writeUINT32(flags);
-		tw.writeBytes(createAttrs(attr));
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_OPEN...");
-			debug.flush();
-		}
-
-		sendMessage(Packet.SSH_FXP_OPEN, req_id, tw.getBytes());
-
-		byte[] resp = receiveMessage(34000);
-
-		TypesReader tr = new TypesReader(resp);
-
-		int t = tr.readByte();
-
-		int rep_id = tr.readUINT32();
-		if (rep_id != req_id)
-			throw new IOException("The server sent an invalid id field.");
-
-		if (t == Packet.SSH_FXP_HANDLE)
-		{
-			if (debug != null)
-			{
-				debug.println("Got SSH_FXP_HANDLE.");
-				debug.flush();
-			}
-
-			return new SFTPv3FileHandle(this, tr.readByteString());
-		}
-
-		if (t != Packet.SSH_FXP_STATUS)
-			throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-		int errorCode = tr.readUINT32();
-		String errorMessage = tr.readString();
-
-		throw new SFTPException(errorMessage, errorCode);
-	}
-
-	/**
-	 * Read bytes from a file. No more than 32768 bytes may be read at once.
-	 * Be aware that the semantics of read() are different than for Java streams.
-	 * <p>
-	 * <ul>
-	 * <li>The server will read as many bytes as it can from the file (up to <code>len</code>),
-	 * and return them.</li>
-	 * <li>If EOF is encountered before reading any data, <code>-1</code> is returned.
-	 * <li>If an error occurs, an exception is thrown</li>.
-	 * <li>For normal disk files, it is guaranteed that the server will return the specified
-	 * number of bytes, or up to end of file. For, e.g., device files this may return
-	 * fewer bytes than requested.</li>
-	 * </ul>
-	 * 
-	 * @param handle a SFTPv3FileHandle handle
-	 * @param fileOffset offset (in bytes) in the file
-	 * @param dst the destination byte array
-	 * @param dstoff offset in the destination byte array
-	 * @param len how many bytes to read, 0 &lt; len &lt;= 32768 bytes
-	 * @return the number of bytes that could be read, may be less than requested if
-	 *         the end of the file is reached, -1 is returned in case of <code>EOF</code>
-	 * @throws IOException
-	 */
-	public int read(SFTPv3FileHandle handle, long fileOffset, byte[] dst, int dstoff, int len) throws IOException
-	{
-		checkHandleValidAndOpen(handle);
-
-		if ((len > 32768) || (len <= 0))
-			throw new IllegalArgumentException("invalid len argument");
-
-		int req_id = generateNextRequestID();
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeString(handle.fileHandle, 0, handle.fileHandle.length);
-		tw.writeUINT64(fileOffset);
-		tw.writeUINT32(len);
-
-		if (debug != null)
-		{
-			debug.println("Sending SSH_FXP_READ...");
-			debug.flush();
-		}
-
-		sendMessage(Packet.SSH_FXP_READ, req_id, tw.getBytes());
-
-		byte[] resp = receiveMessage(34000);
-
-		TypesReader tr = new TypesReader(resp);
-
-		int t = tr.readByte();
-
-		int rep_id = tr.readUINT32();
-		if (rep_id != req_id)
-			throw new IOException("The server sent an invalid id field.");
-
-		if (t == Packet.SSH_FXP_DATA)
-		{
-			if (debug != null)
-			{
-				debug.println("Got SSH_FXP_DATA...");
-				debug.flush();
-			}
-
-			int readLen = tr.readUINT32();
-
-			if ((readLen < 0) || (readLen > len))
-				throw new IOException("The server sent an invalid length field.");
-
-			tr.readBytes(dst, dstoff, readLen);
-
-			return readLen;
-		}
-
-		if (t != Packet.SSH_FXP_STATUS)
-			throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-		int errorCode = tr.readUINT32();
-
-		if (errorCode == ErrorCodes.SSH_FX_EOF)
-		{
-			if (debug != null)
-			{
-				debug.println("Got SSH_FX_EOF.");
-				debug.flush();
-			}
-
-			return -1;
-		}
-
-		String errorMessage = tr.readString();
-
-		throw new SFTPException(errorMessage, errorCode);
-	}
-
-	/**
-	 * Write bytes to a file. If <code>len</code> &gt; 32768, then the write operation will
-	 * be split into multiple writes.
-	 * 
-	 * @param handle a SFTPv3FileHandle handle.
-	 * @param fileOffset offset (in bytes) in the file.
-	 * @param src the source byte array.
-	 * @param srcoff offset in the source byte array.
-	 * @param len how many bytes to write.
-	 * @throws IOException
-	 */
-	public void write(SFTPv3FileHandle handle, long fileOffset, byte[] src, int srcoff, int len) throws IOException
-	{
-		checkHandleValidAndOpen(handle);
-
-		while (len > 0)
-		{
-			int writeRequestLen = len;
-
-			if (writeRequestLen > 32768)
-				writeRequestLen = 32768;
-
-			int req_id = generateNextRequestID();
-
-			TypesWriter tw = new TypesWriter();
-			tw.writeString(handle.fileHandle, 0, handle.fileHandle.length);
-			tw.writeUINT64(fileOffset);
-			tw.writeString(src, srcoff, writeRequestLen);
-
-			if (debug != null)
-			{
-				debug.println("Sending SSH_FXP_WRITE...");
-				debug.flush();
-			}
-
-			sendMessage(Packet.SSH_FXP_WRITE, req_id, tw.getBytes());
-
-			fileOffset += writeRequestLen;
-
-			srcoff += writeRequestLen;
-			len -= writeRequestLen;
-
-			byte[] resp = receiveMessage(34000);
-
-			TypesReader tr = new TypesReader(resp);
-
-			int t = tr.readByte();
-
-			int rep_id = tr.readUINT32();
-			if (rep_id != req_id)
-				throw new IOException("The server sent an invalid id field.");
-
-			if (t != Packet.SSH_FXP_STATUS)
-				throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
-
-			int errorCode = tr.readUINT32();
-
-			if (errorCode == ErrorCodes.SSH_FX_OK)
-				continue;
-
-			String errorMessage = tr.readString();
-
-			throw new SFTPException(errorMessage, errorCode);
-		}
-	}
-
-	/**
-	 * Close a file.
-	 * 
-	 * @param handle a SFTPv3FileHandle handle
-	 * @throws IOException
-	 */
-	public void closeFile(SFTPv3FileHandle handle) throws IOException
-	{
-		if (handle == null)
-			throw new IllegalArgumentException("the handle argument may not be null");
-
-		try
-		{
-			if (handle.isClosed == false)
-			{
-				closeHandle(handle.fileHandle);
-			}
-		}
-		finally
-		{
-			handle.isClosed = true;
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/SFTPv3DirectoryEntry.java b/app/src/main/java/com/trilead/ssh2/SFTPv3DirectoryEntry.java
deleted file mode 100644
index 669ba87..0000000
--- a/app/src/main/java/com/trilead/ssh2/SFTPv3DirectoryEntry.java
+++ /dev/null
@@ -1,38 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * A <code>SFTPv3DirectoryEntry</code> as returned by {@link SFTPv3Client#ls(String)}.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPv3DirectoryEntry.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class SFTPv3DirectoryEntry
-{
-	/**
-	 *  A relative name within the directory, without any path components.
-	 */
-	public String filename;
-
-	/**
-	 * An expanded format for the file name, similar to what is returned by
-	 * "ls -l" on Un*x systems.
-	 * <p>
-	 * The format of this field is unspecified by the SFTP v3 protocol.
-	 * It MUST be suitable for use in the output of a directory listing
-	 * command (in fact, the recommended operation for a directory listing
-	 * command is to simply display this data).  However, clients SHOULD NOT
-	 * attempt to parse the longname field for file attributes; they SHOULD
-	 * use the attrs field instead.
-	 * <p>
-	 * The recommended format for the longname field is as follows:<br>
-	 * <code>-rwxr-xr-x   1 mjos     staff      348911 Mar 25 14:29 t-filexfer</code>
-	 */
-	public String longEntry;
-
-	/**
-	 * The attributes of this entry.
-	 */
-	public SFTPv3FileAttributes attributes;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/SFTPv3FileAttributes.java b/app/src/main/java/com/trilead/ssh2/SFTPv3FileAttributes.java
deleted file mode 100644
index 7b1d321..0000000
--- a/app/src/main/java/com/trilead/ssh2/SFTPv3FileAttributes.java
+++ /dev/null
@@ -1,145 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * A <code>SFTPv3FileAttributes</code> object represents detail information
- * about a file on the server. Not all fields may/must be present.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPv3FileAttributes.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-
-public class SFTPv3FileAttributes
-{
-	/**
-	 * The SIZE attribute. <code>NULL</code> if not present.
-	 */
-	public Long size = null;
-
-	/**
-	 * The UID attribute. <code>NULL</code> if not present.
-	 */
-	public Integer uid = null;
-
-	/**
-	 * The GID attribute. <code>NULL</code> if not present.
-	 */
-	public Integer gid = null;
-
-	/**
-	 * The POSIX permissions. <code>NULL</code> if not present.
-	 * <p>
-	 * Here is a list:
-	 * <p>
-	 * <pre>Note: these numbers are all OCTAL.
-	 *  
-	 *  S_IFMT     0170000   bitmask for the file type bitfields
-	 *  S_IFSOCK   0140000   socket
-	 *  S_IFLNK    0120000   symbolic link
-	 *  S_IFREG    0100000   regular file
-	 *  S_IFBLK    0060000   block device
-	 *  S_IFDIR    0040000   directory
-	 *  S_IFCHR    0020000   character device
-	 *  S_IFIFO    0010000   fifo 
-	 *  S_ISUID    0004000   set UID bit
-	 *  S_ISGID    0002000   set GID bit 
-	 *  S_ISVTX    0001000   sticky bit
-	 *  
-	 *  S_IRWXU    00700     mask for file owner permissions
-	 *  S_IRUSR    00400     owner has read permission
-	 *  S_IWUSR    00200     owner has write permission
-	 *  S_IXUSR    00100     owner has execute permission
-	 *  S_IRWXG    00070     mask for group permissions
-	 *  S_IRGRP    00040     group has read permission
-	 *  S_IWGRP    00020     group has write permission
-	 *  S_IXGRP    00010     group has execute permission
-	 *  S_IRWXO    00007     mask for permissions for others (not in group)
-	 *  S_IROTH    00004     others have read permission
-	 *  S_IWOTH    00002     others have write permisson
-	 *  S_IXOTH    00001     others have execute permission
-	 * </pre>
-	 */
-	public Integer permissions = null;
-
-	/**
-	 * The ATIME attribute. Represented as seconds from Jan 1, 1970 in UTC.
-	 * <code>NULL</code> if not present.
-	 */
-	public Long atime = null;
-
-	/**
-	 * The MTIME attribute. Represented as seconds from Jan 1, 1970 in UTC.
-	 * <code>NULL</code> if not present.
-	 */
-	public Long mtime = null;
-
-	/**
-	 * Checks if this entry is a directory.
-	 * 
-	 * @return Returns true if permissions are available and they indicate
-	 *         that this entry represents a directory.
-	 */
-	public boolean isDirectory()
-	{
-		if (permissions == null)
-			return false;
-		
-		return ((permissions.intValue() & 0040000) != 0);
-	}
-	
-	/**
-	 * Checks if this entry is a regular file.
-	 * 
-	 * @return Returns true if permissions are available and they indicate
-	 *         that this entry represents a regular file.
-	 */
-	public boolean isRegularFile()
-	{
-		if (permissions == null)
-			return false;
-		
-		return ((permissions.intValue() & 0100000) != 0);
-	}
-	
-	/**
-	 * Checks if this entry is a a symlink.
-	 * 
-	 * @return Returns true if permissions are available and they indicate
-	 *         that this entry represents a symlink.
-	 */
-	public boolean isSymlink()
-	{
-		if (permissions == null)
-			return false;
-		
-		return ((permissions.intValue() & 0120000) != 0);
-	}
-	
-	/**
-	 * Turn the POSIX permissions into a 7 digit octal representation.
-	 * Note: the returned value is first masked with <code>0177777</code>.
-	 * 
-	 * @return <code>NULL</code> if permissions are not available.
-	 */
-	public String getOctalPermissions()
-	{
-		if (permissions == null)
-			return null;
-
-		String res = Integer.toString(permissions.intValue() & 0177777, 8);
-
-		StringBuffer sb = new StringBuffer();
-
-		int leadingZeros = 7 - res.length();
-
-		while (leadingZeros > 0)
-		{
-			sb.append('0');
-			leadingZeros--;
-		}
-
-		sb.append(res);
-
-		return sb.toString();
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/SFTPv3FileHandle.java b/app/src/main/java/com/trilead/ssh2/SFTPv3FileHandle.java
deleted file mode 100644
index 9b3dbb6..0000000
--- a/app/src/main/java/com/trilead/ssh2/SFTPv3FileHandle.java
+++ /dev/null
@@ -1,45 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * A <code>SFTPv3FileHandle</code>.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SFTPv3FileHandle.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class SFTPv3FileHandle
-{
-	final SFTPv3Client client;
-	final byte[] fileHandle;
-	boolean isClosed = false;
-
-	/* The constructor is NOT public */
-
-	SFTPv3FileHandle(SFTPv3Client client, byte[] h)
-	{
-		this.client = client;
-		this.fileHandle = h;
-	}
-
-	/**
-	 * Get the SFTPv3Client instance which created this handle. 
-	 * 
-	 * @return A SFTPv3Client instance.
-	 */
-	public SFTPv3Client getClient()
-	{
-		return client;
-	}
-
-	/**
-	 * Check if this handle was closed with the {@link SFTPv3Client#closeFile(SFTPv3FileHandle)} method
-	 * of the <code>SFTPv3Client</code> instance which created the handle.
-	 * 
-	 * @return if the handle is closed.
-	 */
-	public boolean isClosed()
-	{
-		return isClosed;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/ServerHostKeyVerifier.java b/app/src/main/java/com/trilead/ssh2/ServerHostKeyVerifier.java
deleted file mode 100644
index ac65955..0000000
--- a/app/src/main/java/com/trilead/ssh2/ServerHostKeyVerifier.java
+++ /dev/null
@@ -1,31 +0,0 @@
-
-package com.trilead.ssh2;
-
-/**
- * A callback interface used to implement a client specific method of checking
- * server host keys.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ServerHostKeyVerifier.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public interface ServerHostKeyVerifier
-{
-	/**
-	 * The actual verifier method, it will be called by the key exchange code
-	 * on EVERY key exchange - this can happen several times during the lifetime
-	 * of a connection.
-	 * <p>
-	 * Note: SSH-2 servers are allowed to change their hostkey at ANY time.
-	 * 
-	 * @param hostname the hostname used to create the {@link Connection} object
-	 * @param port the remote TCP port
-	 * @param serverHostKeyAlgorithm the public key algorithm (<code>ssh-rsa</code> or <code>ssh-dss</code>)
-	 * @param serverHostKey the server's public key blob
-	 * @return if the client wants to accept the server's host key - if not, the
-	 *         connection will be closed.
-	 * @throws Exception Will be wrapped with an IOException, extended version of returning false =)
-	 */
-	public boolean verifyServerHostKey(String hostname, int port, String serverHostKeyAlgorithm, byte[] serverHostKey)
-			throws Exception;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/Session.java b/app/src/main/java/com/trilead/ssh2/Session.java
deleted file mode 100644
index bf3c7e0..0000000
--- a/app/src/main/java/com/trilead/ssh2/Session.java
+++ /dev/null
@@ -1,530 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.security.SecureRandom;
-
-import com.trilead.ssh2.channel.Channel;
-import com.trilead.ssh2.channel.ChannelManager;
-import com.trilead.ssh2.channel.X11ServerData;
-
-
-/**
- * A <code>Session</code> is a remote execution of a program. "Program" means
- * in this context either a shell, an application or a system command. The
- * program may or may not have a tty. Only one single program can be started on
- * a session. However, multiple sessions can be active simultaneously.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Session.java,v 1.2 2008/03/03 07:01:36 cplattne Exp $
- */
-public class Session
-{
-	ChannelManager cm;
-	Channel cn;
-
-	boolean flag_pty_requested = false;
-	boolean flag_x11_requested = false;
-	boolean flag_execution_started = false;
-	boolean flag_closed = false;
-
-	String x11FakeCookie = null;
-
-	final SecureRandom rnd;
-	
-	Session(ChannelManager cm, SecureRandom rnd) throws IOException
-	{
-		this.cm = cm;
-		this.cn = cm.openSessionChannel();
-		this.rnd = rnd;
-	}
-
-	/**
-	 * Basically just a wrapper for lazy people - identical to calling
-	 * <code>requestPTY("dumb", 0, 0, 0, 0, null)</code>.
-	 * 
-	 * @throws IOException
-	 */
-	public void requestDumbPTY() throws IOException
-	{
-		requestPTY("dumb", 0, 0, 0, 0, null);
-	}
-
-	/**
-	 * Basically just another wrapper for lazy people - identical to calling
-	 * <code>requestPTY(term, 0, 0, 0, 0, null)</code>.
-	 * 
-	 * @throws IOException
-	 */
-	public void requestPTY(String term) throws IOException
-	{
-		requestPTY(term, 0, 0, 0, 0, null);
-	}
-
-	/**
-	 * Allocate a pseudo-terminal for this session.
-	 * <p>
-	 * This method may only be called before a program or shell is started in
-	 * this session.
-	 * <p>
-	 * Different aspects can be specified:
-	 * <p>
-	 * <ul>
-	 * <li>The TERM environment variable value (e.g., vt100)</li>
-	 * <li>The terminal's dimensions.</li>
-	 * <li>The encoded terminal modes.</li>
-	 * </ul>
-	 * Zero dimension parameters are ignored. The character/row dimensions
-	 * override the pixel dimensions (when nonzero). Pixel dimensions refer to
-	 * the drawable area of the window. The dimension parameters are only
-	 * informational. The encoding of terminal modes (parameter
-	 * <code>terminal_modes</code>) is described in RFC4254.
-	 * 
-	 * @param term
-	 *            The TERM environment variable value (e.g., vt100)
-	 * @param term_width_characters
-	 *            terminal width, characters (e.g., 80)
-	 * @param term_height_characters
-	 *            terminal height, rows (e.g., 24)
-	 * @param term_width_pixels
-	 *            terminal width, pixels (e.g., 640)
-	 * @param term_height_pixels
-	 *            terminal height, pixels (e.g., 480)
-	 * @param terminal_modes
-	 *            encoded terminal modes (may be <code>null</code>)
-	 * @throws IOException
-	 */
-	public void requestPTY(String term, int term_width_characters, int term_height_characters, int term_width_pixels,
-			int term_height_pixels, byte[] terminal_modes) throws IOException
-	{
-		if (term == null)
-			throw new IllegalArgumentException("TERM cannot be null.");
-
-		if ((terminal_modes != null) && (terminal_modes.length > 0))
-		{
-			if (terminal_modes[terminal_modes.length - 1] != 0)
-				throw new IOException("Illegal terminal modes description, does not end in zero byte");
-		}
-		else
-			terminal_modes = new byte[] { 0 };
-
-		synchronized (this)
-		{
-			/* The following is just a nicer error, we would catch it anyway later in the channel code */
-			if (flag_closed)
-				throw new IOException("This session is closed.");
-
-			if (flag_pty_requested)
-				throw new IOException("A PTY was already requested.");
-
-			if (flag_execution_started)
-				throw new IOException(
-						"Cannot request PTY at this stage anymore, a remote execution has already started.");
-
-			flag_pty_requested = true;
-		}
-
-		cm.requestPTY(cn, term, term_width_characters, term_height_characters, term_width_pixels, term_height_pixels,
-				terminal_modes);
-	}
-	
-	/**
-	 * Inform other side of connection that our PTY has resized.
-	 * <p>
-	 * Zero dimension parameters are ignored. The character/row dimensions
-     * override the pixel dimensions (when nonzero). Pixel dimensions refer to
-     * the drawable area of the window. The dimension parameters are only
-     * informational.
-     * 
-     * @param term_width_characters
-     *            terminal width, characters (e.g., 80)
-     * @param term_height_characters
-     *            terminal height, rows (e.g., 24)
-     * @param term_width_pixels
-     *            terminal width, pixels (e.g., 640)
-     * @param term_height_pixels
-     *            terminal height, pixels (e.g., 480)
-	 * @throws IOException
-	 */
-	public void resizePTY(int term_width_characters, int term_height_characters, int term_width_pixels,
-			int term_height_pixels) throws IOException {
-		synchronized (this)
-		{
-			/* The following is just a nicer error, we would catch it anyway later in the channel code */
-			if (flag_closed)
-				throw new IOException("This session is closed.");
-		}
-		
-		cm.resizePTY(cn, term_width_characters, term_height_characters, term_width_pixels, term_height_pixels);
-	}
-
-	/**
-	 * Request X11 forwarding for the current session.
-	 * <p>
-	 * You have to supply the name and port of your X-server.
-	 * <p>
-	 * This method may only be called before a program or shell is started in
-	 * this session.
-	 * 
-	 * @param hostname the hostname of the real (target) X11 server (e.g., 127.0.0.1)
-	 * @param port the port of the real (target) X11 server (e.g., 6010)
-	 * @param cookie if non-null, then present this cookie to the real X11 server
-	 * @param singleConnection if true, then the server is instructed to only forward one single
-	 *        connection, no more connections shall be forwarded after first, or after the session
-	 *        channel has been closed
-	 * @throws IOException
-	 */
-	public void requestX11Forwarding(String hostname, int port, byte[] cookie, boolean singleConnection)
-			throws IOException
-	{
-		if (hostname == null)
-			throw new IllegalArgumentException("hostname argument may not be null");
-
-		synchronized (this)
-		{
-			/* The following is just a nicer error, we would catch it anyway later in the channel code */
-			if (flag_closed)
-				throw new IOException("This session is closed.");
-
-			if (flag_x11_requested)
-				throw new IOException("X11 forwarding was already requested.");
-
-			if (flag_execution_started)
-				throw new IOException(
-						"Cannot request X11 forwarding at this stage anymore, a remote execution has already started.");
-
-			flag_x11_requested = true;
-		}
-
-		/* X11ServerData - used to store data about the target X11 server */
-
-		X11ServerData x11data = new X11ServerData();
-
-		x11data.hostname = hostname;
-		x11data.port = port;
-		x11data.x11_magic_cookie = cookie; /* if non-null, then present this cookie to the real X11 server */
-
-		/* Generate fake cookie - this one is used between remote clients and our proxy */
-
-		byte[] fakeCookie = new byte[16];
-		String hexEncodedFakeCookie;
-
-		/* Make sure that this fake cookie is unique for this connection */
-
-		while (true)
-		{
-			rnd.nextBytes(fakeCookie);
-
-			/* Generate also hex representation of fake cookie */
-
-			StringBuffer tmp = new StringBuffer(32);
-			for (int i = 0; i < fakeCookie.length; i++)
-			{
-				String digit2 = Integer.toHexString(fakeCookie[i] & 0xff);
-				tmp.append((digit2.length() == 2) ? digit2 : "0" + digit2);
-			}
-			hexEncodedFakeCookie = tmp.toString();
-
-			/* Well, yes, chances are low, but we want to be on the safe side */
-
-			if (cm.checkX11Cookie(hexEncodedFakeCookie) == null)
-				break;
-		}
-
-		/* Ask for X11 forwarding */
-
-		cm.requestX11(cn, singleConnection, "MIT-MAGIC-COOKIE-1", hexEncodedFakeCookie, 0);
-
-		/* OK, that went fine, get ready to accept X11 connections... */
-		/* ... but only if the user has not called close() in the meantime =) */
-
-		synchronized (this)
-		{
-			if (flag_closed == false)
-			{
-				this.x11FakeCookie = hexEncodedFakeCookie;
-				cm.registerX11Cookie(hexEncodedFakeCookie, x11data);
-			}
-		}
-
-		/* Now it is safe to start remote X11 programs */
-	}
-
-	/**
-	 * Execute a command on the remote machine.
-	 * 
-	 * @param cmd
-	 *            The command to execute on the remote host.
-	 * @throws IOException
-	 */
-	public void execCommand(String cmd) throws IOException
-	{
-		if (cmd == null)
-			throw new IllegalArgumentException("cmd argument may not be null");
-
-		synchronized (this)
-		{
-			/* The following is just a nicer error, we would catch it anyway later in the channel code */
-			if (flag_closed)
-				throw new IOException("This session is closed.");
-
-			if (flag_execution_started)
-				throw new IOException("A remote execution has already started.");
-
-			flag_execution_started = true;
-		}
-
-		cm.requestExecCommand(cn, cmd);
-	}
-
-	/**
-	 * Start a shell on the remote machine.
-	 * 
-	 * @throws IOException
-	 */
-	public void startShell() throws IOException
-	{
-		synchronized (this)
-		{
-			/* The following is just a nicer error, we would catch it anyway later in the channel code */
-			if (flag_closed)
-				throw new IOException("This session is closed.");
-
-			if (flag_execution_started)
-				throw new IOException("A remote execution has already started.");
-
-			flag_execution_started = true;
-		}
-
-		cm.requestShell(cn);
-	}
-
-	/**
-	 * Start a subsystem on the remote machine.
-	 * Unless you know what you are doing, you will never need this.
-	 * 
-	 * @param name the name of the subsystem.
-	 * @throws IOException
-	 */
-	public void startSubSystem(String name) throws IOException
-	{
-		if (name == null)
-			throw new IllegalArgumentException("name argument may not be null");
-
-		synchronized (this)
-		{
-			/* The following is just a nicer error, we would catch it anyway later in the channel code */
-			if (flag_closed)
-				throw new IOException("This session is closed.");
-
-			if (flag_execution_started)
-				throw new IOException("A remote execution has already started.");
-
-			flag_execution_started = true;
-		}
-
-		cm.requestSubSystem(cn, name);
-	}
-
-	/**
-	 * This method can be used to perform end-to-end session (i.e., SSH channel)
-	 * testing. It sends a 'ping' message to the server and waits for the 'pong'
-	 * from the server.
-	 * <p>
-	 * Implementation details: this method sends a SSH_MSG_CHANNEL_REQUEST request
-	 * ('trilead-ping') to the server and waits for the SSH_MSG_CHANNEL_FAILURE reply
-	 * packet.
-	 * 
-	 * @throws IOException in case of any problem or when the session is closed
-	 */
-	public void ping() throws IOException
-	{
-		synchronized (this)
-		{
-			/*
-			 * The following is just a nicer error, we would catch it anyway
-			 * later in the channel code
-			 */
-			if (flag_closed)
-				throw new IOException("This session is closed.");
-		}
-
-		cm.requestChannelTrileadPing(cn);
-	}
-
-	/**
-	 * Request authentication agent forwarding.
-	 * @param agent object that implements the callbacks
-	 *
-	 * @throws IOException in case of any problem or when the session is closed
-	 */
-	public synchronized boolean requestAuthAgentForwarding(AuthAgentCallback agent) throws IOException
-	{
-		synchronized (this)
-		{
-			/*
-			 * The following is just a nicer error, we would catch it anyway
-			 * later in the channel code
-			 */
-			if (flag_closed)
-				throw new IOException("This session is closed.");
-		}
-
-		return cm.requestChannelAgentForwarding(cn, agent);
-	}
-
-	public InputStream getStdout()
-	{
-		return cn.getStdoutStream();
-	}
-
-	public InputStream getStderr()
-	{
-		return cn.getStderrStream();
-	}
-
-	public OutputStream getStdin()
-	{
-		return cn.getStdinStream();
-	}
-
-	/**
-	 * This method blocks until there is more data available on either the
-	 * stdout or stderr InputStream of this <code>Session</code>. Very useful
-	 * if you do not want to use two parallel threads for reading from the two
-	 * InputStreams. One can also specify a timeout. NOTE: do NOT call this
-	 * method if you use concurrent threads that operate on either of the two
-	 * InputStreams of this <code>Session</code> (otherwise this method may
-	 * block, even though more data is available).
-	 * 
-	 * @param timeout
-	 *            The (non-negative) timeout in <code>ms</code>. <code>0</code> means no
-	 *            timeout, the call may block forever.
-	 * @return
-	 *            <ul>
-	 *            <li><code>0</code> if no more data will arrive.</li>
-	 *            <li><code>1</code> if more data is available.</li>
-	 *            <li><code>-1</code> if a timeout occurred.</li>
-	 *            </ul>
-	 *            
-	 * @throws    IOException
-	 * @deprecated This method has been replaced with a much more powerful wait-for-condition
-	 *             interface and therefore acts only as a wrapper.
-	 * 
-	 */
-	public int waitUntilDataAvailable(long timeout) throws IOException
-	{
-		if (timeout < 0)
-			throw new IllegalArgumentException("timeout must not be negative!");
-
-		int conditions = cm.waitForCondition(cn, timeout, ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA
-				| ChannelCondition.EOF);
-
-		if ((conditions & ChannelCondition.TIMEOUT) != 0)
-			return -1;
-
-		if ((conditions & (ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA)) != 0)
-			return 1;
-
-		/* Here we do not need to check separately for CLOSED, since CLOSED implies EOF */
-
-		if ((conditions & ChannelCondition.EOF) != 0)
-			return 0;
-
-		throw new IllegalStateException("Unexpected condition result (" + conditions + ")");
-	}
-
-	/**
-	 * This method blocks until certain conditions hold true on the underlying SSH-2 channel.
-	 * <p>
-	 * This method returns as soon as one of the following happens:
-	 * <ul>
-	 * <li>at least of the specified conditions (see {@link ChannelCondition}) holds true</li>
-	 * <li>timeout > 0 and a timeout occured (TIMEOUT will be set in result conditions)</a> 
-	 * <li>the underlying channel was closed (CLOSED will be set in result conditions)</a>
-	 * </ul>
-	 * <p>
-	 * In any case, the result value contains ALL current conditions, which may be more
-	 * than the specified condition set (i.e., never use the "==" operator to test for conditions
-	 * in the bitmask, see also comments in {@link ChannelCondition}). 
-	 * <p>
-	 * Note: do NOT call this method if you want to wait for STDOUT_DATA or STDERR_DATA and
-	 * there are concurrent threads (e.g., StreamGobblers) that operate on either of the two
-	 * InputStreams of this <code>Session</code> (otherwise this method may
-	 * block, even though more data is available in the StreamGobblers).
-	 * 
-	 * @param condition_set a bitmask based on {@link ChannelCondition} values
-	 * @param timeout non-negative timeout in ms, <code>0</code> means no timeout
-	 * @return all bitmask specifying all current conditions that are true
-	 */
-
-	public int waitForCondition(int condition_set, long timeout)
-	{
-		if (timeout < 0)
-			throw new IllegalArgumentException("timeout must be non-negative!");
-
-		return cm.waitForCondition(cn, timeout, condition_set);
-	}
-
-	/**
-	 * Get the exit code/status from the remote command - if available. Be
-	 * careful - not all server implementations return this value. It is
-	 * generally a good idea to call this method only when all data from the
-	 * remote side has been consumed (see also the <code<WaitForCondition</code> method).
-	 * 
-	 * @return An <code>Integer</code> holding the exit code, or
-	 *         <code>null</code> if no exit code is (yet) available.
-	 */
-	public Integer getExitStatus()
-	{
-		return cn.getExitStatus();
-	}
-
-	/**
-	 * Get the name of the signal by which the process on the remote side was
-	 * stopped - if available and applicable. Be careful - not all server
-	 * implementations return this value.
-	 * 
-	 * @return An <code>String</code> holding the name of the signal, or
-	 *         <code>null</code> if the process exited normally or is still
-	 *         running (or if the server forgot to send this information).
-	 */
-	public String getExitSignal()
-	{
-		return cn.getExitSignal();
-	}
-
-	/**
-	 * Close this session. NEVER forget to call this method to free up resources -
-	 * even if you got an exception from one of the other methods (or when
-	 * getting an Exception on the Input- or OutputStreams). Sometimes these other
-	 * methods may throw an exception, saying that the underlying channel is
-	 * closed (this can happen, e.g., if the other server sent a close message.)
-	 * However, as long as you have not called the <code>close()</code>
-	 * method, you may be wasting (local) resources.
-	 * 
-	 */
-	public void close()
-	{
-		synchronized (this)
-		{
-			if (flag_closed)
-				return;
-
-			flag_closed = true;
-
-			if (x11FakeCookie != null)
-				cm.unRegisterX11Cookie(x11FakeCookie, true);
-
-			try
-			{
-				cm.closeChannel(cn, "Closed due to user request", true);
-			}
-			catch (IOException ignored)
-			{
-			}
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/StreamGobbler.java b/app/src/main/java/com/trilead/ssh2/StreamGobbler.java
deleted file mode 100644
index e93c388..0000000
--- a/app/src/main/java/com/trilead/ssh2/StreamGobbler.java
+++ /dev/null
@@ -1,229 +0,0 @@
-
-package com.trilead.ssh2;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * A <code>StreamGobbler</code> is an InputStream that uses an internal worker
- * thread to constantly consume input from another InputStream. It uses a buffer
- * to store the consumed data. The buffer size is automatically adjusted, if needed.
- * <p>
- * This class is sometimes very convenient - if you wrap a session's STDOUT and STDERR
- * InputStreams with instances of this class, then you don't have to bother about
- * the shared window of STDOUT and STDERR in the low level SSH-2 protocol,
- * since all arriving data will be immediatelly consumed by the worker threads.
- * Also, as a side effect, the streams will be buffered (e.g., single byte
- * read() operations are faster).
- * <p>
- * Other SSH for Java libraries include this functionality by default in
- * their STDOUT and STDERR InputStream implementations, however, please be aware
- * that this approach has also a downside:
- * <p>
- * If you do not call the StreamGobbler's <code>read()</code> method often enough
- * and the peer is constantly sending huge amounts of data, then you will sooner or later
- * encounter a low memory situation due to the aggregated data (well, it also depends on the Java heap size).
- * Joe Average will like this class anyway - a paranoid programmer would never use such an approach.
- * <p>
- * The term "StreamGobbler" was taken from an article called "When Runtime.exec() won't",
- * see http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: StreamGobbler.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class StreamGobbler extends InputStream
-{
-	class GobblerThread extends Thread
-	{
-		public void run()
-		{
-			byte[] buff = new byte[8192];
-
-			while (true)
-			{
-				try
-				{
-					int avail = is.read(buff);
-
-					synchronized (synchronizer)
-					{
-						if (avail <= 0)
-						{
-							isEOF = true;
-							synchronizer.notifyAll();
-							break;
-						}
-						
-						int space_available = buffer.length - write_pos;
-						
-						if (space_available < avail)
-						{
-							/* compact/resize buffer */
-
-							int unread_size = write_pos - read_pos;
-							int need_space = unread_size + avail;
-
-							byte[] new_buffer = buffer;
-
-							if (need_space > buffer.length)
-							{
-								int inc = need_space / 3;
-								inc = (inc < 256) ? 256 : inc;
-								inc = (inc > 8192) ? 8192 : inc;
-								new_buffer = new byte[need_space + inc];
-							}
-							
-							if (unread_size > 0)
-								System.arraycopy(buffer, read_pos, new_buffer, 0, unread_size);
-
-							buffer = new_buffer;
-							
-							read_pos = 0;
-							write_pos = unread_size;
-						}
-						
-						System.arraycopy(buff, 0, buffer, write_pos, avail);
-						write_pos += avail;
-
-						synchronizer.notifyAll();
-					}	
-				}
-				catch (IOException e)
-				{
-					synchronized (synchronizer)
-					{
-						exception = e;
-						synchronizer.notifyAll();
-						break;
-					}
-				}
-			}
-		}
-	}
-
-	private InputStream is;
-	private GobblerThread t;
-
-	private Object synchronizer = new Object();
-
-	private boolean isEOF = false;
-	private boolean isClosed = false;
-	private IOException exception = null;
-
-	private byte[] buffer = new byte[2048];
-	private int read_pos = 0;
-	private int write_pos = 0;
-
-	public StreamGobbler(InputStream is)
-	{
-		this.is = is;
-		t = new GobblerThread();
-		t.setDaemon(true);
-		t.start();
-	}
-
-	public int read() throws IOException
-	{
-		synchronized (synchronizer)
-		{
-			if (isClosed)
-				throw new IOException("This StreamGobbler is closed.");
-
-			while (read_pos == write_pos)
-			{
-				if (exception != null)
-					throw exception;
-
-				if (isEOF)
-					return -1;
-
-				try
-				{
-					synchronizer.wait();
-				}
-				catch (InterruptedException e)
-				{
-				}
-			}
-
-			int b = buffer[read_pos++] & 0xff;
-
-			return b;
-		}
-	}
-
-	public int available() throws IOException
-	{
-		synchronized (synchronizer)
-		{
-			if (isClosed)
-				throw new IOException("This StreamGobbler is closed.");
-
-			return write_pos - read_pos;
-		}
-	}
-
-	public int read(byte[] b) throws IOException
-	{
-		return read(b, 0, b.length);
-	}
-
-	public void close() throws IOException
-	{
-		synchronized (synchronizer)
-		{
-			if (isClosed)
-				return;
-			isClosed = true;
-			isEOF = true;
-			synchronizer.notifyAll();
-			is.close();
-		}
-	}
-
-	public int read(byte[] b, int off, int len) throws IOException
-	{
-		if (b == null)
-			throw new NullPointerException();
-
-		if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length))
-			throw new IndexOutOfBoundsException();
-
-		if (len == 0)
-			return 0;
-
-		synchronized (synchronizer)
-		{
-			if (isClosed)
-				throw new IOException("This StreamGobbler is closed.");
-
-			while (read_pos == write_pos)
-			{
-				if (exception != null)
-					throw exception;
-
-				if (isEOF)
-					return -1;
-
-				try
-				{
-					synchronizer.wait();
-				}
-				catch (InterruptedException e)
-				{
-				}
-			}
-
-			int avail = write_pos - read_pos;
-
-			avail = (avail > len) ? len : avail;
-
-			System.arraycopy(buffer, read_pos, b, off, avail);
-
-			read_pos += avail;
-
-			return avail;
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/auth/AuthenticationManager.java b/app/src/main/java/com/trilead/ssh2/auth/AuthenticationManager.java
deleted file mode 100644
index e551495..0000000
--- a/app/src/main/java/com/trilead/ssh2/auth/AuthenticationManager.java
+++ /dev/null
@@ -1,466 +0,0 @@
-
-package com.trilead.ssh2.auth;
-
-import java.io.IOException;
-import java.security.KeyPair;
-import java.security.PrivateKey;
-import java.security.SecureRandom;
-import java.security.interfaces.DSAPrivateKey;
-import java.security.interfaces.DSAPublicKey;
-import java.security.interfaces.ECPrivateKey;
-import java.security.interfaces.ECPublicKey;
-import java.security.interfaces.RSAPrivateKey;
-import java.security.interfaces.RSAPublicKey;
-import java.util.Vector;
-
-import com.trilead.ssh2.InteractiveCallback;
-import com.trilead.ssh2.crypto.PEMDecoder;
-import com.trilead.ssh2.packets.PacketServiceAccept;
-import com.trilead.ssh2.packets.PacketServiceRequest;
-import com.trilead.ssh2.packets.PacketUserauthBanner;
-import com.trilead.ssh2.packets.PacketUserauthFailure;
-import com.trilead.ssh2.packets.PacketUserauthInfoRequest;
-import com.trilead.ssh2.packets.PacketUserauthInfoResponse;
-import com.trilead.ssh2.packets.PacketUserauthRequestInteractive;
-import com.trilead.ssh2.packets.PacketUserauthRequestNone;
-import com.trilead.ssh2.packets.PacketUserauthRequestPassword;
-import com.trilead.ssh2.packets.PacketUserauthRequestPublicKey;
-import com.trilead.ssh2.packets.Packets;
-import com.trilead.ssh2.packets.TypesWriter;
-import com.trilead.ssh2.signature.DSASHA1Verify;
-import com.trilead.ssh2.signature.ECDSASHA2Verify;
-import com.trilead.ssh2.signature.RSASHA1Verify;
-import com.trilead.ssh2.transport.MessageHandler;
-import com.trilead.ssh2.transport.TransportManager;
-
-
-/**
- * AuthenticationManager.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AuthenticationManager.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class AuthenticationManager implements MessageHandler
-{
-	TransportManager tm;
-
-	Vector packets = new Vector();
-	boolean connectionClosed = false;
-
-	String banner;
-
-	String[] remainingMethods = new String[0];
-	boolean isPartialSuccess = false;
-
-	boolean authenticated = false;
-	boolean initDone = false;
-
-	public AuthenticationManager(TransportManager tm)
-	{
-		this.tm = tm;
-	}
-
-	boolean methodPossible(String methName)
-	{
-		if (remainingMethods == null)
-			return false;
-
-		for (int i = 0; i < remainingMethods.length; i++)
-		{
-			if (remainingMethods[i].compareTo(methName) == 0)
-				return true;
-		}
-		return false;
-	}
-
-	byte[] deQueue() throws IOException
-	{
-		synchronized (packets)
-		{
-			while (packets.size() == 0)
-			{
-				if (connectionClosed)
-					throw (IOException) new IOException("The connection is closed.").initCause(tm
-							.getReasonClosedCause());
-
-				try
-				{
-					packets.wait();
-				}
-				catch (InterruptedException ign)
-				{
-				}
-			}
-			/* This sequence works with J2ME */
-			byte[] res = (byte[]) packets.firstElement();
-			packets.removeElementAt(0);
-			return res;
-		}
-	}
-
-	byte[] getNextMessage() throws IOException
-	{
-		while (true)
-		{
-			byte[] msg = deQueue();
-
-			if (msg[0] != Packets.SSH_MSG_USERAUTH_BANNER)
-				return msg;
-
-			PacketUserauthBanner sb = new PacketUserauthBanner(msg, 0, msg.length);
-
-			banner = sb.getBanner();
-		}
-	}
-
-	public String[] getRemainingMethods(String user) throws IOException
-	{
-		initialize(user);
-		return remainingMethods;
-	}
-
-	public boolean getPartialSuccess()
-	{
-		return isPartialSuccess;
-	}
-
-	private boolean initialize(String user) throws IOException
-	{
-		if (initDone == false)
-		{
-			tm.registerMessageHandler(this, 0, 255);
-
-			PacketServiceRequest sr = new PacketServiceRequest("ssh-userauth");
-			tm.sendMessage(sr.getPayload());
-
-			PacketUserauthRequestNone urn = new PacketUserauthRequestNone("ssh-connection", user);
-			tm.sendMessage(urn.getPayload());
-
-			byte[] msg = getNextMessage();
-			new PacketServiceAccept(msg, 0, msg.length);
-			msg = getNextMessage();
-
-			initDone = true;
-
-			if (msg[0] == Packets.SSH_MSG_USERAUTH_SUCCESS)
-			{
-				authenticated = true;
-				tm.removeMessageHandler(this, 0, 255);
-				return true;
-			}
-
-			if (msg[0] == Packets.SSH_MSG_USERAUTH_FAILURE)
-			{
-				PacketUserauthFailure puf = new PacketUserauthFailure(msg, 0, msg.length);
-
-				remainingMethods = puf.getAuthThatCanContinue();
-				isPartialSuccess = puf.isPartialSuccess();
-				return false;
-			}
-
-			throw new IOException("Unexpected SSH message (type " + msg[0] + ")");
-		}
-		return authenticated;
-	}
-
-	public boolean authenticatePublicKey(String user, char[] PEMPrivateKey, String password, SecureRandom rnd)
-			throws IOException
-	{
-		KeyPair pair = PEMDecoder.decode(PEMPrivateKey, password);
-
-		return authenticatePublicKey(user, pair, rnd);
-	}
-
-	public boolean authenticatePublicKey(String user, KeyPair pair, SecureRandom rnd)
-			throws IOException
-	{
-		PrivateKey key = pair.getPrivate();
-
-		try
-		{
-			initialize(user);
-
-			if (methodPossible("publickey") == false)
-				throw new IOException("Authentication method publickey not supported by the server at this stage.");
-
-			if (key instanceof DSAPrivateKey)
-			{
-				DSAPrivateKey pk = (DSAPrivateKey) key;
-
-				byte[] pk_enc = DSASHA1Verify.encodeSSHDSAPublicKey((DSAPublicKey) pair.getPublic());
-
-				TypesWriter tw = new TypesWriter();
-
-				byte[] H = tm.getSessionIdentifier();
-
-				tw.writeString(H, 0, H.length);
-				tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
-				tw.writeString(user);
-				tw.writeString("ssh-connection");
-				tw.writeString("publickey");
-				tw.writeBoolean(true);
-				tw.writeString("ssh-dss");
-				tw.writeString(pk_enc, 0, pk_enc.length);
-
-				byte[] msg = tw.getBytes();
-
-				byte[] ds = DSASHA1Verify.generateSignature(msg, pk, rnd);
-
-				byte[] ds_enc = DSASHA1Verify.encodeSSHDSASignature(ds);
-
-				PacketUserauthRequestPublicKey ua = new PacketUserauthRequestPublicKey("ssh-connection", user,
-						"ssh-dss", pk_enc, ds_enc);
-				tm.sendMessage(ua.getPayload());
-			}
-			else if (key instanceof RSAPrivateKey)
-			{
-				RSAPrivateKey pk = (RSAPrivateKey) key;
-
-				byte[] pk_enc = RSASHA1Verify.encodeSSHRSAPublicKey((RSAPublicKey) pair.getPublic());
-
-				TypesWriter tw = new TypesWriter();
-				{
-					byte[] H = tm.getSessionIdentifier();
-
-					tw.writeString(H, 0, H.length);
-					tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
-					tw.writeString(user);
-					tw.writeString("ssh-connection");
-					tw.writeString("publickey");
-					tw.writeBoolean(true);
-					tw.writeString("ssh-rsa");
-					tw.writeString(pk_enc, 0, pk_enc.length);
-				}
-
-				byte[] msg = tw.getBytes();
-
-				byte[] ds = RSASHA1Verify.generateSignature(msg, pk);
-
-				byte[] rsa_sig_enc = RSASHA1Verify.encodeSSHRSASignature(ds);
-
-				PacketUserauthRequestPublicKey ua = new PacketUserauthRequestPublicKey("ssh-connection", user,
-						"ssh-rsa", pk_enc, rsa_sig_enc);
-
-				tm.sendMessage(ua.getPayload());
-			}
-			else if (key instanceof ECPrivateKey)
-			{
-				ECPrivateKey pk = (ECPrivateKey) key;
-				final String algo = ECDSASHA2Verify.ECDSA_SHA2_PREFIX
-						+ ECDSASHA2Verify.getCurveName(pk.getParams());
-
-				byte[] pk_enc = ECDSASHA2Verify.encodeSSHECDSAPublicKey((ECPublicKey) pair.getPublic());
-
-				TypesWriter tw = new TypesWriter();
-				{
-					byte[] H = tm.getSessionIdentifier();
-
-					tw.writeString(H, 0, H.length);
-					tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
-					tw.writeString(user);
-					tw.writeString("ssh-connection");
-					tw.writeString("publickey");
-					tw.writeBoolean(true);
-					tw.writeString(algo);
-					tw.writeString(pk_enc, 0, pk_enc.length);
-				}
-
-				byte[] msg = tw.getBytes();
-
-				byte[] ds = ECDSASHA2Verify.generateSignature(msg, pk);
-
-				byte[] ec_sig_enc = ECDSASHA2Verify.encodeSSHECDSASignature(ds, pk.getParams());
-
-				PacketUserauthRequestPublicKey ua = new PacketUserauthRequestPublicKey("ssh-connection", user,
-						algo, pk_enc, ec_sig_enc);
-
-				tm.sendMessage(ua.getPayload());
-			}
-			else
-			{
-				throw new IOException("Unknown private key type returned by the PEM decoder.");
-			}
-
-			byte[] ar = getNextMessage();
-			if (ar[0] == Packets.SSH_MSG_USERAUTH_SUCCESS)
-			{
-				authenticated = true;
-				tm.removeMessageHandler(this, 0, 255);
-				return true;
-			}
-
-			if (ar[0] == Packets.SSH_MSG_USERAUTH_FAILURE)
-			{
-				PacketUserauthFailure puf = new PacketUserauthFailure(ar, 0, ar.length);
-
-				remainingMethods = puf.getAuthThatCanContinue();
-				isPartialSuccess = puf.isPartialSuccess();
-
-				return false;
-			}
-
-			throw new IOException("Unexpected SSH message (type " + ar[0] + ")");
-
-		}
-		catch (IOException e)
-		{
-e.printStackTrace();
-			tm.close(e, false);
-			throw (IOException) new IOException("Publickey authentication failed.").initCause(e);
-		}
-	}
-
-	public boolean authenticateNone(String user) throws IOException
-	{
-		try
-		{
-			initialize(user);
-			return authenticated;
-		}
-		catch (IOException e)
-		{
-			tm.close(e, false);
-			throw (IOException) new IOException("None authentication failed.").initCause(e);
-		}
-	}
-
-	public boolean authenticatePassword(String user, String pass) throws IOException
-	{
-		try
-		{
-			initialize(user);
-
-			if (methodPossible("password") == false)
-				throw new IOException("Authentication method password not supported by the server at this stage.");
-
-			PacketUserauthRequestPassword ua = new PacketUserauthRequestPassword("ssh-connection", user, pass);
-			tm.sendMessage(ua.getPayload());
-
-			byte[] ar = getNextMessage();
-
-			if (ar[0] == Packets.SSH_MSG_USERAUTH_SUCCESS)
-			{
-				authenticated = true;
-				tm.removeMessageHandler(this, 0, 255);
-				return true;
-			}
-
-			if (ar[0] == Packets.SSH_MSG_USERAUTH_FAILURE)
-			{
-				PacketUserauthFailure puf = new PacketUserauthFailure(ar, 0, ar.length);
-
-				remainingMethods = puf.getAuthThatCanContinue();
-				isPartialSuccess = puf.isPartialSuccess();
-
-				return false;
-			}
-
-			throw new IOException("Unexpected SSH message (type " + ar[0] + ")");
-
-		}
-		catch (IOException e)
-		{
-			tm.close(e, false);
-			throw (IOException) new IOException("Password authentication failed.").initCause(e);
-		}
-	}
-
-	public boolean authenticateInteractive(String user, String[] submethods, InteractiveCallback cb) throws IOException
-	{
-		try
-		{
-			initialize(user);
-
-			if (methodPossible("keyboard-interactive") == false)
-				throw new IOException(
-						"Authentication method keyboard-interactive not supported by the server at this stage.");
-
-			if (submethods == null)
-				submethods = new String[0];
-
-			PacketUserauthRequestInteractive ua = new PacketUserauthRequestInteractive("ssh-connection", user,
-					submethods);
-
-			tm.sendMessage(ua.getPayload());
-
-			while (true)
-			{
-				byte[] ar = getNextMessage();
-
-				if (ar[0] == Packets.SSH_MSG_USERAUTH_SUCCESS)
-				{
-					authenticated = true;
-					tm.removeMessageHandler(this, 0, 255);
-					return true;
-				}
-
-				if (ar[0] == Packets.SSH_MSG_USERAUTH_FAILURE)
-				{
-					PacketUserauthFailure puf = new PacketUserauthFailure(ar, 0, ar.length);
-
-					remainingMethods = puf.getAuthThatCanContinue();
-					isPartialSuccess = puf.isPartialSuccess();
-
-					return false;
-				}
-
-				if (ar[0] == Packets.SSH_MSG_USERAUTH_INFO_REQUEST)
-				{
-					PacketUserauthInfoRequest pui = new PacketUserauthInfoRequest(ar, 0, ar.length);
-
-					String[] responses;
-
-					try
-					{
-						responses = cb.replyToChallenge(pui.getName(), pui.getInstruction(), pui.getNumPrompts(), pui
-								.getPrompt(), pui.getEcho());
-					}
-					catch (Exception e)
-					{
-						throw (IOException) new IOException("Exception in callback.").initCause(e);
-					}
-
-					if (responses == null)
-						throw new IOException("Your callback may not return NULL!");
-
-					PacketUserauthInfoResponse puir = new PacketUserauthInfoResponse(responses);
-					tm.sendMessage(puir.getPayload());
-
-					continue;
-				}
-
-				throw new IOException("Unexpected SSH message (type " + ar[0] + ")");
-			}
-		}
-		catch (IOException e)
-		{
-			tm.close(e, false);
-			throw (IOException) new IOException("Keyboard-interactive authentication failed.").initCause(e);
-		}
-	}
-
-	public void handleMessage(byte[] msg, int msglen) throws IOException
-	{
-		synchronized (packets)
-		{
-			if (msg == null)
-			{
-				connectionClosed = true;
-			}
-			else
-			{
-				byte[] tmp = new byte[msglen];
-				System.arraycopy(msg, 0, tmp, 0, msglen);
-				packets.addElement(tmp);
-			}
-
-			packets.notifyAll();
-
-			if (packets.size() > 5)
-			{
-				connectionClosed = true;
-				throw new IOException("Error, peer is flooding us with authentication packets.");
-			}
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/AuthAgentForwardThread.java b/app/src/main/java/com/trilead/ssh2/channel/AuthAgentForwardThread.java
deleted file mode 100644
index c6831e6..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/AuthAgentForwardThread.java
+++ /dev/null
@@ -1,579 +0,0 @@
-/*
- * ConnectBot: simple, powerful, open-source SSH client for Android
- * Copyright 2007 Kenny Root, Jeffrey Sharkey
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.math.BigInteger;
-import java.security.KeyFactory;
-import java.security.KeyPair;
-import java.security.NoSuchAlgorithmException;
-import java.security.PrivateKey;
-import java.security.PublicKey;
-import java.security.SecureRandom;
-import java.security.interfaces.DSAPrivateKey;
-import java.security.interfaces.RSAPrivateKey;
-import java.security.spec.DSAPrivateKeySpec;
-import java.security.spec.DSAPublicKeySpec;
-import java.security.spec.ECParameterSpec;
-import java.security.spec.ECPoint;
-import java.security.spec.ECPrivateKeySpec;
-import java.security.spec.ECPublicKeySpec;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.KeySpec;
-import java.security.spec.RSAPrivateCrtKeySpec;
-import java.security.spec.RSAPublicKeySpec;
-import java.util.Map;
-import java.util.Map.Entry;
-
-import com.trilead.ssh2.AuthAgentCallback;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.packets.TypesWriter;
-import com.trilead.ssh2.signature.DSASHA1Verify;
-import com.trilead.ssh2.signature.ECDSASHA2Verify;
-import com.trilead.ssh2.signature.RSASHA1Verify;
-
-/**
- * AuthAgentForwardThread.
- *
- * @author Kenny Root
- * @version $Id$
- */
-public class AuthAgentForwardThread extends Thread implements IChannelWorkerThread
-{
-	private static final byte[] SSH_AGENT_FAILURE = {0, 0, 0, 1, 5}; // 5
-	private static final byte[] SSH_AGENT_SUCCESS = {0, 0, 0, 1, 6}; // 6
-
-	private static final int SSH2_AGENTC_REQUEST_IDENTITIES = 11;
-	private static final int SSH2_AGENT_IDENTITIES_ANSWER = 12;
-
-	private static final int SSH2_AGENTC_SIGN_REQUEST = 13;
-	private static final int SSH2_AGENT_SIGN_RESPONSE = 14;
-
-	private static final int SSH2_AGENTC_ADD_IDENTITY = 17;
-	private static final int SSH2_AGENTC_REMOVE_IDENTITY = 18;
-	private static final int SSH2_AGENTC_REMOVE_ALL_IDENTITIES = 19;
-
-//	private static final int SSH_AGENTC_ADD_SMARTCARD_KEY = 20;
-//	private static final int SSH_AGENTC_REMOVE_SMARTCARD_KEY = 21;
-
-	private static final int SSH_AGENTC_LOCK = 22;
-	private static final int SSH_AGENTC_UNLOCK = 23;
-
-	private static final int SSH2_AGENTC_ADD_ID_CONSTRAINED = 25;
-//	private static final int SSH_AGENTC_ADD_SMARTCARD_KEY_CONSTRAINED = 26;
-
-	// Constraints for adding keys
-	private static final int SSH_AGENT_CONSTRAIN_LIFETIME = 1;
-	private static final int SSH_AGENT_CONSTRAIN_CONFIRM = 2;
-
-	// Flags for signature requests
-//	private static final int SSH_AGENT_OLD_SIGNATURE = 1;
-
-	private static final Logger log = Logger.getLogger(RemoteAcceptThread.class);
-
-	AuthAgentCallback authAgent;
-	OutputStream os;
-	InputStream is;
-	Channel c;
-
-	byte[] buffer = new byte[Channel.CHANNEL_BUFFER_SIZE];
-
-	public AuthAgentForwardThread(Channel c, AuthAgentCallback authAgent)
-	{
-		this.c = c;
-		this.authAgent = authAgent;
-
-		if (log.isEnabled())
-			log.log(20, "AuthAgentForwardThread started");
-	}
-
-	@Override
-	public void run()
-	{
-		try
-		{
-			c.cm.registerThread(this);
-		}
-		catch (IOException e)
-		{
-			stopWorking();
-			return;
-		}
-
-		try
-		{
-			c.cm.sendOpenConfirmation(c);
-
-			is = c.getStdoutStream();
-			os = c.getStdinStream();
-
-			int totalSize = 4;
-			int readSoFar = 0;
-
-			while (true) {
-				int len;
-
-				try
-				{
-					len = is.read(buffer, readSoFar, buffer.length - readSoFar);
-				}
-				catch (IOException e)
-				{
-					stopWorking();
-					return;
-				}
-
-				if (len <= 0)
-					break;
-
-				readSoFar += len;
-
-				if (readSoFar >= 4) {
-					TypesReader tr = new TypesReader(buffer, 0, 4);
-					totalSize = tr.readUINT32() + 4;
-				}
-
-				if (totalSize == readSoFar) {
-					TypesReader tr = new TypesReader(buffer, 4, readSoFar - 4);
-					int messageType = tr.readByte();
-
-					switch (messageType) {
-					case SSH2_AGENTC_REQUEST_IDENTITIES:
-						sendIdentities();
-						break;
-					case SSH2_AGENTC_ADD_IDENTITY:
-						addIdentity(tr, false);
-						break;
-					case SSH2_AGENTC_ADD_ID_CONSTRAINED:
-						addIdentity(tr, true);
-						break;
-					case SSH2_AGENTC_REMOVE_IDENTITY:
-						removeIdentity(tr);
-						break;
-					case SSH2_AGENTC_REMOVE_ALL_IDENTITIES:
-						removeAllIdentities(tr);
-						break;
-					case SSH2_AGENTC_SIGN_REQUEST:
-						processSignRequest(tr);
-						break;
-					case SSH_AGENTC_LOCK:
-						processLockRequest(tr);
-						break;
-					case SSH_AGENTC_UNLOCK:
-						processUnlockRequest(tr);
-						break;
-					default:
-						os.write(SSH_AGENT_FAILURE);
-						break;
-					}
-
-					readSoFar = 0;
-				}
-			}
-
-			c.cm.closeChannel(c, "EOF on both streams reached.", true);
-		}
-		catch (IOException e)
-		{
-			log.log(50, "IOException in agent forwarder: " + e.getMessage());
-
-			try
-			{
-				is.close();
-			}
-			catch (IOException e1)
-			{
-			}
-
-			try
-			{
-				os.close();
-			}
-			catch (IOException e2)
-			{
-			}
-
-			try
-			{
-				c.cm.closeChannel(c, "IOException in agent forwarder (" + e.getMessage() + ")", true);
-			}
-			catch (IOException e3)
-			{
-			}
-		}
-	}
-
-	public void stopWorking() {
-		try
-		{
-			/* This will lead to an IOException in the is.read() call */
-			is.close();
-		}
-		catch (IOException e)
-		{
-		}
-	}
-
-	/**
-	 * @return whether the agent is locked
-	 */
-	private boolean failWhenLocked() throws IOException
-	{
-		if (authAgent.isAgentLocked()) {
-			os.write(SSH_AGENT_FAILURE);
-			return true;
-		} else
-			return false;
-	}
-
-	private void sendIdentities() throws IOException
-	{
-		Map<String,byte[]> keys = null;
-
-		TypesWriter tw = new TypesWriter();
-		tw.writeByte(SSH2_AGENT_IDENTITIES_ANSWER);
-		int numKeys = 0;
-
-		if (!authAgent.isAgentLocked())
-			keys = authAgent.retrieveIdentities();
-
-		if (keys != null)
-			numKeys = keys.size();
-
-		tw.writeUINT32(numKeys);
-
-		if (keys != null) {
-			for (Entry<String,byte[]> entry : keys.entrySet()) {
-				byte[] keyBytes = entry.getValue();
-				tw.writeString(keyBytes, 0, keyBytes.length);
-				tw.writeString(entry.getKey());
-			}
-		}
-
-		sendPacket(tw.getBytes());
-	}
-
-	/**
-	 * @param tr
-	 */
-	private void addIdentity(TypesReader tr, boolean checkConstraints) {
-		try
-		{
-			if (failWhenLocked())
-				return;
-
-			String type = tr.readString();
-
-			String comment;
-			String keyType;
-			KeySpec pubSpec;
-			KeySpec privSpec;
-
-			if (type.equals("ssh-rsa")) {
-				keyType = "RSA";
-
-				BigInteger n = tr.readMPINT();
-				BigInteger e = tr.readMPINT();
-				BigInteger d = tr.readMPINT();
-				BigInteger iqmp = tr.readMPINT();
-				BigInteger p = tr.readMPINT();
-				BigInteger q = tr.readMPINT();
-				comment = tr.readString();
-
-				// Derive the extra values Java needs.
-				BigInteger dmp1 = d.mod(p.subtract(BigInteger.ONE));
-				BigInteger dmq1 = d.mod(q.subtract(BigInteger.ONE));
-
-				pubSpec = new RSAPublicKeySpec(n, e);
-				privSpec = new RSAPrivateCrtKeySpec(n, e, d, p, q, dmp1, dmq1, iqmp);
-			} else if (type.equals("ssh-dss")) {
-				keyType = "DSA";
-
-				BigInteger p = tr.readMPINT();
-				BigInteger q = tr.readMPINT();
-				BigInteger g = tr.readMPINT();
-				BigInteger y = tr.readMPINT();
-				BigInteger x = tr.readMPINT();
-				comment = tr.readString();
-
-				pubSpec = new DSAPublicKeySpec(y, p, q, g);
-				privSpec = new DSAPrivateKeySpec(x, p, q, g);
-			} else if (type.equals("ecdsa-sha2-nistp256")) {
-				keyType = "EC";
-
-				String curveName = tr.readString();
-				byte[] groupBytes = tr.readByteString();
-				BigInteger exponent = tr.readMPINT();
-				comment = tr.readString();
-
-				if (!"nistp256".equals(curveName)) {
-					log.log(2, "Invalid curve name for ecdsa-sha2-nistp256: " + curveName);
-					os.write(SSH_AGENT_FAILURE);
-					return;
-				}
-
-				ECParameterSpec nistp256 = ECDSASHA2Verify.EllipticCurves.nistp256;
-				ECPoint group = ECDSASHA2Verify.decodeECPoint(groupBytes, nistp256.getCurve());
-				if (group == null) {
-					// TODO log error
-					os.write(SSH_AGENT_FAILURE);
-					return;
-				}
-
-				pubSpec = new ECPublicKeySpec(group, nistp256);
-				privSpec = new ECPrivateKeySpec(exponent, nistp256);
-			} else {
-				log.log(2, "Unknown key type: " + type);
-				os.write(SSH_AGENT_FAILURE);
-				return;
-			}
-
-			PublicKey pubKey;
-			PrivateKey privKey;
-			try {
-				KeyFactory kf = KeyFactory.getInstance(keyType);
-				pubKey = kf.generatePublic(pubSpec);
-				privKey = kf.generatePrivate(privSpec);
-			} catch (NoSuchAlgorithmException ex) {
-				// TODO: log error
-				 os.write(SSH_AGENT_FAILURE);
-				return;
-			} catch (InvalidKeySpecException ex) {
-				// TODO: log error
-				 os.write(SSH_AGENT_FAILURE);
-				return;
-			}
-
-			KeyPair pair = new KeyPair(pubKey, privKey);
-
-			boolean confirmUse = false;
-			int lifetime = 0;
-
-			if (checkConstraints) {
-				while (tr.remain() > 0) {
-					int constraint = tr.readByte();
-					if (constraint == SSH_AGENT_CONSTRAIN_CONFIRM)
-						confirmUse = true;
-					else if (constraint == SSH_AGENT_CONSTRAIN_LIFETIME)
-						lifetime = tr.readUINT32();
-					else {
-						// Unknown constraint. Bail.
-						os.write(SSH_AGENT_FAILURE);
-						return;
-					}
-				}
-			}
-
-			if (authAgent.addIdentity(pair, comment, confirmUse, lifetime))
-				os.write(SSH_AGENT_SUCCESS);
-			else
-				os.write(SSH_AGENT_FAILURE);
-		}
-		catch (IOException e)
-		{
-			try
-			{
-				os.write(SSH_AGENT_FAILURE);
-			}
-			catch (IOException e1)
-			{
-			}
-		}
-	}
-
-	/**
-	 * @param tr
-	 */
-	private void removeIdentity(TypesReader tr) {
-		try
-		{
-			if (failWhenLocked())
-				return;
-
-			byte[] publicKey = tr.readByteString();
-			if (authAgent.removeIdentity(publicKey))
-				os.write(SSH_AGENT_SUCCESS);
-			else
-				os.write(SSH_AGENT_FAILURE);
-		}
-		catch (IOException e)
-		{
-			try
-			{
-				os.write(SSH_AGENT_FAILURE);
-			}
-			catch (IOException e1)
-			{
-			}
-		}
-	}
-
-	/**
-	 * @param tr
-	 */
-	private void removeAllIdentities(TypesReader tr) {
-		try
-		{
-			if (failWhenLocked())
-				return;
-
-			if (authAgent.removeAllIdentities())
-				os.write(SSH_AGENT_SUCCESS);
-			else
-				os.write(SSH_AGENT_FAILURE);
-		}
-		catch (IOException e)
-		{
-			try
-			{
-				os.write(SSH_AGENT_FAILURE);
-			}
-			catch (IOException e1)
-			{
-			}
-		}
-	}
-
-	private void processSignRequest(TypesReader tr)
-	{
-		try
-		{
-			if (failWhenLocked())
-				return;
-
-			byte[] publicKeyBytes = tr.readByteString();
-			byte[] challenge = tr.readByteString();
-
-			int flags = tr.readUINT32();
-
-			if (flags != 0) {
-				// We don't understand any flags; abort!
-				os.write(SSH_AGENT_FAILURE);
-				return;
-			}
-
-			KeyPair pair = authAgent.getKeyPair(publicKeyBytes);
-
-			if (pair == null) {
-				os.write(SSH_AGENT_FAILURE);
-				return;
-			}
-
-			byte[] response;
-
-			PrivateKey privKey = pair.getPrivate();
-			if (privKey instanceof RSAPrivateKey) {
-				byte[] signature = RSASHA1Verify.generateSignature(challenge,
-						(RSAPrivateKey) privKey);
-				response = RSASHA1Verify.encodeSSHRSASignature(signature);
-			} else if (privKey instanceof DSAPrivateKey) {
-				byte[] signature = DSASHA1Verify.generateSignature(challenge,
-						(DSAPrivateKey) privKey, new SecureRandom());
-				response = DSASHA1Verify.encodeSSHDSASignature(signature);
-			} else {
-				os.write(SSH_AGENT_FAILURE);
-				return;
-			}
-
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(SSH2_AGENT_SIGN_RESPONSE);
-			tw.writeString(response, 0, response.length);
-
-			sendPacket(tw.getBytes());
-		}
-		catch (IOException e)
-		{
-			try
-			{
-				os.write(SSH_AGENT_FAILURE);
-			}
-			catch (IOException e1)
-			{
-			}
-		}
-	}
-
-	/**
-	 * @param tr
-	 */
-	private void processLockRequest(TypesReader tr) {
-		try
-		{
-			if (failWhenLocked())
-				return;
-
-			String lockPassphrase = tr.readString();
-			if (!authAgent.setAgentLock(lockPassphrase)) {
-				os.write(SSH_AGENT_FAILURE);
-				return;
-			} else
-				os.write(SSH_AGENT_SUCCESS);
-		}
-		catch (IOException e)
-		{
-			try
-			{
-				os.write(SSH_AGENT_FAILURE);
-			}
-			catch (IOException e1)
-			{
-			}
-		}
-	}
-
-	/**
-	 * @param tr
-	 */
-	private void processUnlockRequest(TypesReader tr)
-	{
-		try
-		{
-			String unlockPassphrase = tr.readString();
-
-			if (authAgent.requestAgentUnlock(unlockPassphrase))
-				os.write(SSH_AGENT_SUCCESS);
-			else
-				os.write(SSH_AGENT_FAILURE);
-		}
-		catch (IOException e)
-		{
-			try
-			{
-				os.write(SSH_AGENT_FAILURE);
-			}
-			catch (IOException e1)
-			{
-			}
-		}
-	}
-
-	/**
-	 * @param tw
-	 * @throws IOException
-	 */
-	private void sendPacket(byte[] message) throws IOException
-	{
-		TypesWriter packet = new TypesWriter();
-		packet.writeUINT32(message.length);
-		packet.writeBytes(message);
-		os.write(packet.getBytes());
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/Channel.java b/app/src/main/java/com/trilead/ssh2/channel/Channel.java
deleted file mode 100644
index 8365f12..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/Channel.java
+++ /dev/null
@@ -1,207 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-/**
- * Channel.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Channel.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class Channel
-{
-	/*
-	 * OK. Here is an important part of the JVM Specification:
-	 * (http://java.sun.com/docs/books/vmspec/2nd-edition/html/Threads.doc.html#22214)
-	 * 
-	 * Any association between locks and variables is purely conventional.
-	 * Locking any lock conceptually flushes all variables from a thread's
-	 * working memory, and unlocking any lock forces the writing out to main
-	 * memory of all variables that the thread has assigned. That a lock may be
-	 * associated with a particular object or a class is purely a convention.
-	 * (...)
-	 * 
-	 * If a thread uses a particular shared variable only after locking a
-	 * particular lock and before the corresponding unlocking of that same lock,
-	 * then the thread will read the shared value of that variable from main
-	 * memory after the lock operation, if necessary, and will copy back to main
-	 * memory the value most recently assigned to that variable before the
-	 * unlock operation.
-	 * 
-	 * This, in conjunction with the mutual exclusion rules for locks, suffices
-	 * to guarantee that values are correctly transmitted from one thread to
-	 * another through shared variables.
-	 * 
-	 * ====> Always keep that in mind when modifying the Channel/ChannelManger
-	 * code.
-	 * 
-	 */
-
-	static final int STATE_OPENING = 1;
-	static final int STATE_OPEN = 2;
-	static final int STATE_CLOSED = 4;
-
-	static final int CHANNEL_BUFFER_SIZE = 30000;
-
-	/*
-	 * To achieve correctness, the following rules have to be respected when
-	 * accessing this object:
-	 */
-
-	// These fields can always be read
-	final ChannelManager cm;
-	final ChannelOutputStream stdinStream;
-	final ChannelInputStream stdoutStream;
-	final ChannelInputStream stderrStream;
-
-	// These two fields will only be written while the Channel is in state
-	// STATE_OPENING.
-	// The code makes sure that the two fields are written out when the state is
-	// changing to STATE_OPEN.
-	// Therefore, if you know that the Channel is in state STATE_OPEN, then you
-	// can read these two fields without synchronizing on the Channel. However, make
-	// sure that you get the latest values (e.g., flush caches by synchronizing on any
-	// object). However, to be on the safe side, you can lock the channel.
-
-	int localID = -1;
-	int remoteID = -1;
-
-	/*
-	 * Make sure that we never send a data/EOF/WindowChange msg after a CLOSE
-	 * msg.
-	 * 
-	 * This is a little bit complicated, but we have to do it in that way, since
-	 * we cannot keep a lock on the Channel during the send operation (this
-	 * would block sometimes the receiver thread, and, in extreme cases, can
-	 * lead to a deadlock on both sides of the connection (senders are blocked
-	 * since the receive buffers on the other side are full, and receiver
-	 * threads wait for the senders to finish). It all depends on the
-	 * implementation on the other side. But we cannot make any assumptions, we
-	 * have to assume the worst case. Confused? Just believe me.
-	 */
-
-	/*
-	 * If you send a message on a channel, then you have to aquire the
-	 * "channelSendLock" and check the "closeMessageSent" flag (this variable
-	 * may only be accessed while holding the "channelSendLock" !!!
-	 * 
-	 * BTW: NEVER EVER SEND MESSAGES FROM THE RECEIVE THREAD - see explanation
-	 * above.
-	 */
-
-	final Object channelSendLock = new Object();
-	boolean closeMessageSent = false;
-
-	/*
-	 * Stop memory fragmentation by allocating this often used buffer.
-	 * May only be used while holding the channelSendLock
-	 */
-
-	final byte[] msgWindowAdjust = new byte[9];
-
-	// If you access (read or write) any of the following fields, then you have
-	// to synchronize on the channel.
-
-	int state = STATE_OPENING;
-
-	boolean closeMessageRecv = false;
-
-	/* This is a stupid implementation. At the moment we can only wait
-	 * for one pending request per channel.
-	 */
-	int successCounter = 0;
-	int failedCounter = 0;
-
-	int localWindow = 0; /* locally, we use a small window, < 2^31 */
-	long remoteWindow = 0; /* long for readable  2^32 - 1 window support */
-
-	int localMaxPacketSize = -1;
-	int remoteMaxPacketSize = -1;
-
-	final byte[] stdoutBuffer = new byte[CHANNEL_BUFFER_SIZE];
-	final byte[] stderrBuffer = new byte[CHANNEL_BUFFER_SIZE];
-
-	int stdoutReadpos = 0;
-	int stdoutWritepos = 0;
-	int stderrReadpos = 0;
-	int stderrWritepos = 0;
-
-	boolean EOF = false;
-
-	Integer exit_status;
-
-	String exit_signal;
-
-	// we keep the x11 cookie so that this channel can be closed when this
-	// specific x11 forwarding gets stopped
-
-	String hexX11FakeCookie;
-
-	// reasonClosed is special, since we sometimes need to access it
-	// while holding the channelSendLock.
-	// We protect it with a private short term lock.
-
-	private final Object reasonClosedLock = new Object();
-	private String reasonClosed = null;
-
-	public Channel(ChannelManager cm)
-	{
-		this.cm = cm;
-
-		this.localWindow = CHANNEL_BUFFER_SIZE;
-		this.localMaxPacketSize = 35000 - 1024; // leave enough slack
-
-		this.stdinStream = new ChannelOutputStream(this);
-		this.stdoutStream = new ChannelInputStream(this, false);
-		this.stderrStream = new ChannelInputStream(this, true);
-	}
-
-	/* Methods to allow access from classes outside of this package */
-
-	public ChannelInputStream getStderrStream()
-	{
-		return stderrStream;
-	}
-
-	public ChannelOutputStream getStdinStream()
-	{
-		return stdinStream;
-	}
-
-	public ChannelInputStream getStdoutStream()
-	{
-		return stdoutStream;
-	}
-
-	public String getExitSignal()
-	{
-		synchronized (this)
-		{
-			return exit_signal;
-		}
-	}
-
-	public Integer getExitStatus()
-	{
-		synchronized (this)
-		{
-			return exit_status;
-		}
-	}
-
-	public String getReasonClosed()
-	{
-		synchronized (reasonClosedLock)
-		{
-			return reasonClosed;
-		}
-	}
-
-	public void setReasonClosed(String reasonClosed)
-	{
-		synchronized (reasonClosedLock)
-		{
-			if (this.reasonClosed == null)
-				this.reasonClosed = reasonClosed;
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/ChannelInputStream.java b/app/src/main/java/com/trilead/ssh2/channel/ChannelInputStream.java
deleted file mode 100644
index f88522c..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/ChannelInputStream.java
+++ /dev/null
@@ -1,86 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * ChannelInputStream.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ChannelInputStream.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public final class ChannelInputStream extends InputStream
-{
-	Channel c;
-
-	boolean isClosed = false;
-	boolean isEOF = false;
-	boolean extendedFlag = false;
-
-	ChannelInputStream(Channel c, boolean isExtended)
-	{
-		this.c = c;
-		this.extendedFlag = isExtended;
-	}
-
-	public int available() throws IOException
-	{
-		if (isEOF)
-			return 0;
-
-		int avail = c.cm.getAvailable(c, extendedFlag);
-
-		/* We must not return -1 on EOF */
-
-		return (avail > 0) ? avail : 0;
-	}
-
-	public void close() throws IOException
-	{
-		isClosed = true;
-	}
-
-	public int read(byte[] b, int off, int len) throws IOException
-	{
-		if (b == null)
-			throw new NullPointerException();
-
-		if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length))
-			throw new IndexOutOfBoundsException();
-
-		if (len == 0)
-			return 0;
-
-		if (isEOF)
-			return -1;
-
-		int ret = c.cm.getChannelData(c, extendedFlag, b, off, len);
-
-		if (ret == -1)
-		{
-			isEOF = true;
-		}
-
-		return ret;
-	}
-
-	public int read(byte[] b) throws IOException
-	{
-		return read(b, 0, b.length);
-	}
-
-	public int read() throws IOException
-	{
-		/* Yes, this stream is pure and unbuffered, a single byte read() is slow */
-
-		final byte b[] = new byte[1];
-
-		int ret = read(b, 0, 1);
-
-		if (ret != 1)
-			return -1;
-
-		return b[0] & 0xff;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/ChannelManager.java b/app/src/main/java/com/trilead/ssh2/channel/ChannelManager.java
deleted file mode 100644
index 88beffd..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/ChannelManager.java
+++ /dev/null
@@ -1,1756 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.Vector;
-
-import com.trilead.ssh2.AuthAgentCallback;
-import com.trilead.ssh2.ChannelCondition;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.PacketChannelAuthAgentReq;
-import com.trilead.ssh2.packets.PacketChannelOpenConfirmation;
-import com.trilead.ssh2.packets.PacketChannelOpenFailure;
-import com.trilead.ssh2.packets.PacketChannelTrileadPing;
-import com.trilead.ssh2.packets.PacketGlobalCancelForwardRequest;
-import com.trilead.ssh2.packets.PacketGlobalForwardRequest;
-import com.trilead.ssh2.packets.PacketGlobalTrileadPing;
-import com.trilead.ssh2.packets.PacketOpenDirectTCPIPChannel;
-import com.trilead.ssh2.packets.PacketOpenSessionChannel;
-import com.trilead.ssh2.packets.PacketSessionExecCommand;
-import com.trilead.ssh2.packets.PacketSessionPtyRequest;
-import com.trilead.ssh2.packets.PacketSessionPtyResize;
-import com.trilead.ssh2.packets.PacketSessionStartShell;
-import com.trilead.ssh2.packets.PacketSessionSubsystemRequest;
-import com.trilead.ssh2.packets.PacketSessionX11Request;
-import com.trilead.ssh2.packets.Packets;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.transport.MessageHandler;
-import com.trilead.ssh2.transport.TransportManager;
-
-/**
- * ChannelManager. Please read the comments in Channel.java.
- * <p>
- * Besides the crypto part, this is the core of the library.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ChannelManager.java,v 1.2 2008/03/03 07:01:36 cplattne Exp $
- */
-public class ChannelManager implements MessageHandler
-{
-	private static final Logger log = Logger.getLogger(ChannelManager.class);
-
-	private HashMap<String, X11ServerData> x11_magic_cookies = new HashMap<String, X11ServerData>();
-
-	private TransportManager tm;
-
-	private Vector<Channel> channels = new Vector<Channel>();
-	private int nextLocalChannel = 100;
-	private boolean shutdown = false;
-	private int globalSuccessCounter = 0;
-	private int globalFailedCounter = 0;
-
-	private HashMap<Integer, RemoteForwardingData> remoteForwardings = new HashMap<Integer, RemoteForwardingData>();
-
-	private AuthAgentCallback authAgent;
-
-	private Vector<IChannelWorkerThread> listenerThreads = new Vector<IChannelWorkerThread>();
-
-	private boolean listenerThreadsAllowed = true;
-
-	public ChannelManager(TransportManager tm)
-	{
-		this.tm = tm;
-		tm.registerMessageHandler(this, 80, 100);
-	}
-
-	private Channel getChannel(int id)
-	{
-		synchronized (channels)
-		{
-			for (int i = 0; i < channels.size(); i++)
-			{
-				Channel c = channels.elementAt(i);
-				if (c.localID == id)
-					return c;
-			}
-		}
-		return null;
-	}
-
-	private void removeChannel(int id)
-	{
-		synchronized (channels)
-		{
-			for (int i = 0; i < channels.size(); i++)
-			{
-				Channel c = channels.elementAt(i);
-				if (c.localID == id)
-				{
-					channels.removeElementAt(i);
-					break;
-				}
-			}
-		}
-	}
-
-	private int addChannel(Channel c)
-	{
-		synchronized (channels)
-		{
-			channels.addElement(c);
-			return nextLocalChannel++;
-		}
-	}
-
-	private void waitUntilChannelOpen(Channel c) throws IOException
-	{
-		synchronized (c)
-		{
-			while (c.state == Channel.STATE_OPENING)
-			{
-				try
-				{
-					c.wait();
-				}
-				catch (InterruptedException ignore)
-				{
-				}
-			}
-
-			if (c.state != Channel.STATE_OPEN)
-			{
-				removeChannel(c.localID);
-
-				String detail = c.getReasonClosed();
-
-				if (detail == null)
-					detail = "state: " + c.state;
-
-				throw new IOException("Could not open channel (" + detail + ")");
-			}
-		}
-	}
-
-	private final boolean waitForGlobalRequestResult() throws IOException
-	{
-		synchronized (channels)
-		{
-			while ((globalSuccessCounter == 0) && (globalFailedCounter == 0))
-			{
-				if (shutdown)
-				{
-					throw new IOException("The connection is being shutdown");
-				}
-
-				try
-				{
-					channels.wait();
-				}
-				catch (InterruptedException ignore)
-				{
-				}
-			}
-
-			if ((globalFailedCounter == 0) && (globalSuccessCounter == 1))
-				return true;
-
-			if ((globalFailedCounter == 1) && (globalSuccessCounter == 0))
-				return false;
-
-			throw new IOException("Illegal state. The server sent " + globalSuccessCounter
-					+ " SSH_MSG_REQUEST_SUCCESS and " + globalFailedCounter + " SSH_MSG_REQUEST_FAILURE messages.");
-		}
-	}
-
-	private final boolean waitForChannelRequestResult(Channel c) throws IOException
-	{
-		synchronized (c)
-		{
-			while ((c.successCounter == 0) && (c.failedCounter == 0))
-			{
-				if (c.state != Channel.STATE_OPEN)
-				{
-					String detail = c.getReasonClosed();
-
-					if (detail == null)
-						detail = "state: " + c.state;
-
-					throw new IOException("This SSH2 channel is not open (" + detail + ")");
-				}
-
-				try
-				{
-					c.wait();
-				}
-				catch (InterruptedException ignore)
-				{
-				}
-			}
-
-			if ((c.failedCounter == 0) && (c.successCounter == 1))
-				return true;
-
-			if ((c.failedCounter == 1) && (c.successCounter == 0))
-				return false;
-
-			throw new IOException("Illegal state. The server sent " + c.successCounter
-					+ " SSH_MSG_CHANNEL_SUCCESS and " + c.failedCounter + " SSH_MSG_CHANNEL_FAILURE messages.");
-		}
-	}
-
-	public void registerX11Cookie(String hexFakeCookie, X11ServerData data)
-	{
-		synchronized (x11_magic_cookies)
-		{
-			x11_magic_cookies.put(hexFakeCookie, data);
-		}
-	}
-
-	public void unRegisterX11Cookie(String hexFakeCookie, boolean killChannels)
-	{
-		if (hexFakeCookie == null)
-			throw new IllegalStateException("hexFakeCookie may not be null");
-
-		synchronized (x11_magic_cookies)
-		{
-			x11_magic_cookies.remove(hexFakeCookie);
-		}
-
-		if (killChannels == false)
-			return;
-
-		if (log.isEnabled())
-			log.log(50, "Closing all X11 channels for the given fake cookie");
-
-		Vector<Channel> channel_copy;
-
-		synchronized (channels)
-		{
-			channel_copy = (Vector<Channel>) channels.clone();
-		}
-
-		for (int i = 0; i < channel_copy.size(); i++)
-		{
-			Channel c = channel_copy.elementAt(i);
-
-			synchronized (c)
-			{
-				if (hexFakeCookie.equals(c.hexX11FakeCookie) == false)
-					continue;
-			}
-
-			try
-			{
-				closeChannel(c, "Closing X11 channel since the corresponding session is closing", true);
-			}
-			catch (IOException e)
-			{
-			}
-		}
-	}
-
-	public X11ServerData checkX11Cookie(String hexFakeCookie)
-	{
-		synchronized (x11_magic_cookies)
-		{
-			if (hexFakeCookie != null)
-				return x11_magic_cookies.get(hexFakeCookie);
-		}
-		return null;
-	}
-
-	public void closeAllChannels()
-	{
-		if (log.isEnabled())
-			log.log(50, "Closing all channels");
-
-		Vector<Channel> channel_copy;
-
-		synchronized (channels)
-		{
-			channel_copy = (Vector<Channel>) channels.clone();
-		}
-
-		for (int i = 0; i < channel_copy.size(); i++)
-		{
-			Channel c = channel_copy.elementAt(i);
-			try
-			{
-				closeChannel(c, "Closing all channels", true);
-			}
-			catch (IOException e)
-			{
-			}
-		}
-	}
-
-	public void closeChannel(Channel c, String reason, boolean force) throws IOException
-	{
-		byte msg[] = new byte[5];
-
-		synchronized (c)
-		{
-			if (force)
-			{
-				c.state = Channel.STATE_CLOSED;
-				c.EOF = true;
-			}
-
-			c.setReasonClosed(reason);
-
-			msg[0] = Packets.SSH_MSG_CHANNEL_CLOSE;
-			msg[1] = (byte) (c.remoteID >> 24);
-			msg[2] = (byte) (c.remoteID >> 16);
-			msg[3] = (byte) (c.remoteID >> 8);
-			msg[4] = (byte) (c.remoteID);
-
-			c.notifyAll();
-		}
-
-		synchronized (c.channelSendLock)
-		{
-			if (c.closeMessageSent == true)
-				return;
-			tm.sendMessage(msg);
-			c.closeMessageSent = true;
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Sent SSH_MSG_CHANNEL_CLOSE (channel " + c.localID + ")");
-	}
-
-	public void sendEOF(Channel c) throws IOException
-	{
-		byte[] msg = new byte[5];
-
-		synchronized (c)
-		{
-			if (c.state != Channel.STATE_OPEN)
-				return;
-
-			msg[0] = Packets.SSH_MSG_CHANNEL_EOF;
-			msg[1] = (byte) (c.remoteID >> 24);
-			msg[2] = (byte) (c.remoteID >> 16);
-			msg[3] = (byte) (c.remoteID >> 8);
-			msg[4] = (byte) (c.remoteID);
-		}
-
-		synchronized (c.channelSendLock)
-		{
-			if (c.closeMessageSent == true)
-				return;
-			tm.sendMessage(msg);
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Sent EOF (Channel " + c.localID + "/" + c.remoteID + ")");
-	}
-
-	public void sendOpenConfirmation(Channel c) throws IOException
-	{
-		PacketChannelOpenConfirmation pcoc = null;
-
-		synchronized (c)
-		{
-			if (c.state != Channel.STATE_OPENING)
-				return;
-
-			c.state = Channel.STATE_OPEN;
-
-			pcoc = new PacketChannelOpenConfirmation(c.remoteID, c.localID, c.localWindow, c.localMaxPacketSize);
-		}
-
-		synchronized (c.channelSendLock)
-		{
-			if (c.closeMessageSent == true)
-				return;
-			tm.sendMessage(pcoc.getPayload());
-		}
-	}
-
-	public void sendData(Channel c, byte[] buffer, int pos, int len) throws IOException
-	{
-		while (len > 0)
-		{
-			int thislen = 0;
-			byte[] msg;
-
-			synchronized (c)
-			{
-				while (true)
-				{
-					if (c.state == Channel.STATE_CLOSED)
-						throw new IOException("SSH channel is closed. (" + c.getReasonClosed() + ")");
-
-					if (c.state != Channel.STATE_OPEN)
-						throw new IOException("SSH channel in strange state. (" + c.state + ")");
-
-					if (c.remoteWindow != 0)
-						break;
-
-					try
-					{
-						c.wait();
-					}
-					catch (InterruptedException ignore)
-					{
-					}
-				}
-
-				/* len > 0, no sign extension can happen when comparing */
-
-				thislen = (c.remoteWindow >= len) ? len : (int) c.remoteWindow;
-
-				int estimatedMaxDataLen = c.remoteMaxPacketSize - (tm.getPacketOverheadEstimate() + 9);
-
-				/* The worst case scenario =) a true bottleneck */
-
-				if (estimatedMaxDataLen <= 0)
-				{
-					estimatedMaxDataLen = 1;
-				}
-
-				if (thislen > estimatedMaxDataLen)
-					thislen = estimatedMaxDataLen;
-
-				c.remoteWindow -= thislen;
-
-				msg = new byte[1 + 8 + thislen];
-
-				msg[0] = Packets.SSH_MSG_CHANNEL_DATA;
-				msg[1] = (byte) (c.remoteID >> 24);
-				msg[2] = (byte) (c.remoteID >> 16);
-				msg[3] = (byte) (c.remoteID >> 8);
-				msg[4] = (byte) (c.remoteID);
-				msg[5] = (byte) (thislen >> 24);
-				msg[6] = (byte) (thislen >> 16);
-				msg[7] = (byte) (thislen >> 8);
-				msg[8] = (byte) (thislen);
-
-				System.arraycopy(buffer, pos, msg, 9, thislen);
-			}
-
-			synchronized (c.channelSendLock)
-			{
-				if (c.closeMessageSent == true)
-					throw new IOException("SSH channel is closed. (" + c.getReasonClosed() + ")");
-
-				tm.sendMessage(msg);
-			}
-
-			pos += thislen;
-			len -= thislen;
-		}
-	}
-
-	public int requestGlobalForward(String bindAddress, int bindPort, String targetAddress, int targetPort)
-			throws IOException
-	{
-		RemoteForwardingData rfd = new RemoteForwardingData();
-
-		rfd.bindAddress = bindAddress;
-		rfd.bindPort = bindPort;
-		rfd.targetAddress = targetAddress;
-		rfd.targetPort = targetPort;
-
-		synchronized (remoteForwardings)
-		{
-			Integer key = Integer.valueOf(bindPort);
-
-			if (remoteForwardings.get(key) != null)
-			{
-				throw new IOException("There is already a forwarding for remote port " + bindPort);
-			}
-
-			remoteForwardings.put(key, rfd);
-		}
-
-		synchronized (channels)
-		{
-			globalSuccessCounter = globalFailedCounter = 0;
-		}
-
-		PacketGlobalForwardRequest pgf = new PacketGlobalForwardRequest(true, bindAddress, bindPort);
-		tm.sendMessage(pgf.getPayload());
-
-		if (log.isEnabled())
-			log.log(50, "Requesting a remote forwarding ('" + bindAddress + "', " + bindPort + ")");
-
-		try
-		{
-			if (waitForGlobalRequestResult() == false)
-				throw new IOException("The server denied the request (did you enable port forwarding?)");
-		}
-		catch (IOException e)
-		{
-			synchronized (remoteForwardings)
-			{
-				remoteForwardings.remove(rfd);
-			}
-			throw e;
-		}
-
-		return bindPort;
-	}
-
-	public void requestCancelGlobalForward(int bindPort) throws IOException
-	{
-		RemoteForwardingData rfd = null;
-
-		synchronized (remoteForwardings)
-		{
-			rfd = remoteForwardings.get(Integer.valueOf(bindPort));
-
-			if (rfd == null)
-				throw new IOException("Sorry, there is no known remote forwarding for remote port " + bindPort);
-		}
-
-		synchronized (channels)
-		{
-			globalSuccessCounter = globalFailedCounter = 0;
-		}
-
-		PacketGlobalCancelForwardRequest pgcf = new PacketGlobalCancelForwardRequest(true, rfd.bindAddress,
-				rfd.bindPort);
-		tm.sendMessage(pgcf.getPayload());
-
-		if (log.isEnabled())
-			log.log(50, "Requesting cancelation of remote forward ('" + rfd.bindAddress + "', " + rfd.bindPort + ")");
-
-		try
-		{
-			if (waitForGlobalRequestResult() == false)
-				throw new IOException("The server denied the request.");
-		}
-		finally
-		{
-			synchronized (remoteForwardings)
-			{
-				/* Only now we are sure that no more forwarded connections will arrive */
-				remoteForwardings.remove(rfd);
-			}
-		}
-
-	}
-
-	/**
-	 * @param agent
-	 * @throws IOException
-	 */
-	public boolean requestChannelAgentForwarding(Channel c, AuthAgentCallback authAgent) throws IOException {
-		synchronized (this)
-		{
-			if (this.authAgent != null)
-				throw new IllegalStateException("Auth agent already exists");
-
-			this.authAgent = authAgent;
-		}
-
-		synchronized (channels)
-		{
-			globalSuccessCounter = globalFailedCounter = 0;
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Requesting agent forwarding");
-
-		PacketChannelAuthAgentReq aar = new PacketChannelAuthAgentReq(c.remoteID);
-		tm.sendMessage(aar.getPayload());
-
-		if (waitForChannelRequestResult(c) == false) {
-			authAgent = null;
-			return false;
-		}
-
-		return true;
-	}
-
-	public void registerThread(IChannelWorkerThread thr) throws IOException
-	{
-		synchronized (listenerThreads)
-		{
-			if (listenerThreadsAllowed == false)
-				throw new IOException("Too late, this connection is closed.");
-			listenerThreads.addElement(thr);
-		}
-	}
-
-	public Channel openDirectTCPIPChannel(String host_to_connect, int port_to_connect, String originator_IP_address,
-			int originator_port) throws IOException
-	{
-		Channel c = new Channel(this);
-
-		synchronized (c)
-		{
-			c.localID = addChannel(c);
-			// end of synchronized block forces writing out to main memory
-		}
-
-		PacketOpenDirectTCPIPChannel dtc = new PacketOpenDirectTCPIPChannel(c.localID, c.localWindow,
-				c.localMaxPacketSize, host_to_connect, port_to_connect, originator_IP_address, originator_port);
-
-		tm.sendMessage(dtc.getPayload());
-
-		waitUntilChannelOpen(c);
-
-		return c;
-	}
-
-	public Channel openSessionChannel() throws IOException
-	{
-		Channel c = new Channel(this);
-
-		synchronized (c)
-		{
-			c.localID = addChannel(c);
-			// end of synchronized block forces the writing out to main memory
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Sending SSH_MSG_CHANNEL_OPEN (Channel " + c.localID + ")");
-
-		PacketOpenSessionChannel smo = new PacketOpenSessionChannel(c.localID, c.localWindow, c.localMaxPacketSize);
-		tm.sendMessage(smo.getPayload());
-
-		waitUntilChannelOpen(c);
-
-		return c;
-	}
-
-	public void requestGlobalTrileadPing() throws IOException
-	{
-		synchronized (channels)
-		{
-			globalSuccessCounter = globalFailedCounter = 0;
-		}
-
-		PacketGlobalTrileadPing pgtp = new PacketGlobalTrileadPing();
-
-		tm.sendMessage(pgtp.getPayload());
-
-		if (log.isEnabled())
-			log.log(50, "Sending SSH_MSG_GLOBAL_REQUEST 'trilead-ping'.");
-
-		try
-		{
-			if (waitForGlobalRequestResult() == true)
-				throw new IOException("Your server is alive - but buggy. "
-						+ "It replied with SSH_MSG_REQUEST_SUCCESS when it actually should not.");
-
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("The ping request failed.").initCause(e);
-		}
-	}
-
-	public void requestChannelTrileadPing(Channel c) throws IOException
-	{
-		PacketChannelTrileadPing pctp;
-
-		synchronized (c)
-		{
-			if (c.state != Channel.STATE_OPEN)
-				throw new IOException("Cannot ping this channel (" + c.getReasonClosed() + ")");
-
-			pctp = new PacketChannelTrileadPing(c.remoteID);
-
-			c.successCounter = c.failedCounter = 0;
-		}
-
-		synchronized (c.channelSendLock)
-		{
-			if (c.closeMessageSent)
-				throw new IOException("Cannot ping this channel (" + c.getReasonClosed() + ")");
-			tm.sendMessage(pctp.getPayload());
-		}
-
-		try
-		{
-			if (waitForChannelRequestResult(c) == true)
-				throw new IOException("Your server is alive - but buggy. "
-						+ "It replied with SSH_MSG_SESSION_SUCCESS when it actually should not.");
-
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("The ping request failed.").initCause(e);
-		}
-	}
-
-	public void requestPTY(Channel c, String term, int term_width_characters, int term_height_characters,
-			int term_width_pixels, int term_height_pixels, byte[] terminal_modes) throws IOException
-	{
-		PacketSessionPtyRequest spr;
-
-		synchronized (c)
-		{
-			if (c.state != Channel.STATE_OPEN)
-				throw new IOException("Cannot request PTY on this channel (" + c.getReasonClosed() + ")");
-
-			spr = new PacketSessionPtyRequest(c.remoteID, true, term, term_width_characters, term_height_characters,
-					term_width_pixels, term_height_pixels, terminal_modes);
-
-			c.successCounter = c.failedCounter = 0;
-		}
-
-		synchronized (c.channelSendLock)
-		{
-			if (c.closeMessageSent)
-				throw new IOException("Cannot request PTY on this channel (" + c.getReasonClosed() + ")");
-			tm.sendMessage(spr.getPayload());
-		}
-
-		try
-		{
-			if (waitForChannelRequestResult(c) == false)
-				throw new IOException("The server denied the request.");
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("PTY request failed").initCause(e);
-		}
-	}
-	
-	
-	public void resizePTY(Channel c, int term_width_characters, int term_height_characters,
-			int term_width_pixels, int term_height_pixels) throws IOException {
-		PacketSessionPtyResize spr;
-
-		synchronized (c) {
-			if (c.state != Channel.STATE_OPEN)
-				throw new IOException("Cannot request PTY on this channel ("
-						+ c.getReasonClosed() + ")");
-
-			spr = new PacketSessionPtyResize(c.remoteID, term_width_characters, term_height_characters,
-					term_width_pixels, term_height_pixels);
-			c.successCounter = c.failedCounter = 0;
-		}
-
-		synchronized (c.channelSendLock) {
-			if (c.closeMessageSent)
-				throw new IOException("Cannot request PTY on this channel ("
-						+ c.getReasonClosed() + ")");
-			tm.sendMessage(spr.getPayload());
-		}
-	}
-	
-
-	public void requestX11(Channel c, boolean singleConnection, String x11AuthenticationProtocol,
-			String x11AuthenticationCookie, int x11ScreenNumber) throws IOException
-	{
-		PacketSessionX11Request psr;
-
-		synchronized (c)
-		{
-			if (c.state != Channel.STATE_OPEN)
-				throw new IOException("Cannot request X11 on this channel (" + c.getReasonClosed() + ")");
-
-			psr = new PacketSessionX11Request(c.remoteID, true, singleConnection, x11AuthenticationProtocol,
-					x11AuthenticationCookie, x11ScreenNumber);
-
-			c.successCounter = c.failedCounter = 0;
-		}
-
-		synchronized (c.channelSendLock)
-		{
-			if (c.closeMessageSent)
-				throw new IOException("Cannot request X11 on this channel (" + c.getReasonClosed() + ")");
-			tm.sendMessage(psr.getPayload());
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Requesting X11 forwarding (Channel " + c.localID + "/" + c.remoteID + ")");
-
-		try
-		{
-			if (waitForChannelRequestResult(c) == false)
-				throw new IOException("The server denied the request.");
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("The X11 request failed.").initCause(e);
-		}
-	}
-
-	public void requestSubSystem(Channel c, String subSystemName) throws IOException
-	{
-		PacketSessionSubsystemRequest ssr;
-
-		synchronized (c)
-		{
-			if (c.state != Channel.STATE_OPEN)
-				throw new IOException("Cannot request subsystem on this channel (" + c.getReasonClosed() + ")");
-
-			ssr = new PacketSessionSubsystemRequest(c.remoteID, true, subSystemName);
-
-			c.successCounter = c.failedCounter = 0;
-		}
-
-		synchronized (c.channelSendLock)
-		{
-			if (c.closeMessageSent)
-				throw new IOException("Cannot request subsystem on this channel (" + c.getReasonClosed() + ")");
-			tm.sendMessage(ssr.getPayload());
-		}
-
-		try
-		{
-			if (waitForChannelRequestResult(c) == false)
-				throw new IOException("The server denied the request.");
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("The subsystem request failed.").initCause(e);
-		}
-	}
-
-	public void requestExecCommand(Channel c, String cmd) throws IOException
-	{
-		PacketSessionExecCommand sm;
-
-		synchronized (c)
-		{
-			if (c.state != Channel.STATE_OPEN)
-				throw new IOException("Cannot execute command on this channel (" + c.getReasonClosed() + ")");
-
-			sm = new PacketSessionExecCommand(c.remoteID, true, cmd);
-
-			c.successCounter = c.failedCounter = 0;
-		}
-
-		synchronized (c.channelSendLock)
-		{
-			if (c.closeMessageSent)
-				throw new IOException("Cannot execute command on this channel (" + c.getReasonClosed() + ")");
-			tm.sendMessage(sm.getPayload());
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Executing command (channel " + c.localID + ", '" + cmd + "')");
-
-		try
-		{
-			if (waitForChannelRequestResult(c) == false)
-				throw new IOException("The server denied the request.");
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("The execute request failed.").initCause(e);
-		}
-	}
-
-	public void requestShell(Channel c) throws IOException
-	{
-		PacketSessionStartShell sm;
-
-		synchronized (c)
-		{
-			if (c.state != Channel.STATE_OPEN)
-				throw new IOException("Cannot start shell on this channel (" + c.getReasonClosed() + ")");
-
-			sm = new PacketSessionStartShell(c.remoteID, true);
-
-			c.successCounter = c.failedCounter = 0;
-		}
-
-		synchronized (c.channelSendLock)
-		{
-			if (c.closeMessageSent)
-				throw new IOException("Cannot start shell on this channel (" + c.getReasonClosed() + ")");
-			tm.sendMessage(sm.getPayload());
-		}
-
-		try
-		{
-			if (waitForChannelRequestResult(c) == false)
-				throw new IOException("The server denied the request.");
-		}
-		catch (IOException e)
-		{
-			throw (IOException) new IOException("The shell request failed.").initCause(e);
-		}
-	}
-
-	public void msgChannelExtendedData(byte[] msg, int msglen) throws IOException
-	{
-		if (msglen <= 13)
-			throw new IOException("SSH_MSG_CHANNEL_EXTENDED_DATA message has wrong size (" + msglen + ")");
-
-		int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-		int dataType = ((msg[5] & 0xff) << 24) | ((msg[6] & 0xff) << 16) | ((msg[7] & 0xff) << 8) | (msg[8] & 0xff);
-		int len = ((msg[9] & 0xff) << 24) | ((msg[10] & 0xff) << 16) | ((msg[11] & 0xff) << 8) | (msg[12] & 0xff);
-
-		Channel c = getChannel(id);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_EXTENDED_DATA message for non-existent channel " + id);
-
-		if (dataType != Packets.SSH_EXTENDED_DATA_STDERR)
-			throw new IOException("SSH_MSG_CHANNEL_EXTENDED_DATA message has unknown type (" + dataType + ")");
-
-		if (len != (msglen - 13))
-			throw new IOException("SSH_MSG_CHANNEL_EXTENDED_DATA message has wrong len (calculated " + (msglen - 13)
-					+ ", got " + len + ")");
-
-		if (log.isEnabled())
-			log.log(80, "Got SSH_MSG_CHANNEL_EXTENDED_DATA (channel " + id + ", " + len + ")");
-
-		synchronized (c)
-		{
-			if (c.state == Channel.STATE_CLOSED)
-				return; // ignore
-
-			if (c.state != Channel.STATE_OPEN)
-				throw new IOException("Got SSH_MSG_CHANNEL_EXTENDED_DATA, but channel is not in correct state ("
-						+ c.state + ")");
-
-			if (c.localWindow < len)
-				throw new IOException("Remote sent too much data, does not fit into window.");
-
-			c.localWindow -= len;
-
-			System.arraycopy(msg, 13, c.stderrBuffer, c.stderrWritepos, len);
-			c.stderrWritepos += len;
-
-			c.notifyAll();
-		}
-	}
-
-	/**
-	 * Wait until for a condition.
-	 * 
-	 * @param c
-	 *            Channel
-	 * @param timeout
-	 *            in ms, 0 means no timeout.
-	 * @param condition_mask
-	 *            minimum event mask
-	 * @return all current events
-	 * 
-	 */
-	public int waitForCondition(Channel c, long timeout, int condition_mask)
-	{
-		long end_time = 0;
-		boolean end_time_set = false;
-
-		synchronized (c)
-		{
-			while (true)
-			{
-				int current_cond = 0;
-
-				int stdoutAvail = c.stdoutWritepos - c.stdoutReadpos;
-				int stderrAvail = c.stderrWritepos - c.stderrReadpos;
-
-				if (stdoutAvail > 0)
-					current_cond = current_cond | ChannelCondition.STDOUT_DATA;
-
-				if (stderrAvail > 0)
-					current_cond = current_cond | ChannelCondition.STDERR_DATA;
-
-				if (c.EOF)
-					current_cond = current_cond | ChannelCondition.EOF;
-
-				if (c.getExitStatus() != null)
-					current_cond = current_cond | ChannelCondition.EXIT_STATUS;
-
-				if (c.getExitSignal() != null)
-					current_cond = current_cond | ChannelCondition.EXIT_SIGNAL;
-
-				if (c.state == Channel.STATE_CLOSED)
-					return current_cond | ChannelCondition.CLOSED | ChannelCondition.EOF;
-
-				if ((current_cond & condition_mask) != 0)
-					return current_cond;
-
-				if (timeout > 0)
-				{
-					if (!end_time_set)
-					{
-						end_time = System.currentTimeMillis() + timeout;
-						end_time_set = true;
-					}
-					else
-					{
-						timeout = end_time - System.currentTimeMillis();
-
-						if (timeout <= 0)
-							return current_cond | ChannelCondition.TIMEOUT;
-					}
-				}
-
-				try
-				{
-					if (timeout > 0)
-						c.wait(timeout);
-					else
-						c.wait();
-				}
-				catch (InterruptedException e)
-				{
-				}
-			}
-		}
-	}
-
-	public int getAvailable(Channel c, boolean extended) throws IOException
-	{
-		synchronized (c)
-		{
-			int avail;
-
-			if (extended)
-				avail = c.stderrWritepos - c.stderrReadpos;
-			else
-				avail = c.stdoutWritepos - c.stdoutReadpos;
-
-			return ((avail > 0) ? avail : (c.EOF ? -1 : 0));
-		}
-	}
-
-	public int getChannelData(Channel c, boolean extended, byte[] target, int off, int len) throws IOException
-	{
-		int copylen = 0;
-		int increment = 0;
-		int remoteID = 0;
-		int localID = 0;
-
-		synchronized (c)
-		{
-			int stdoutAvail = 0;
-			int stderrAvail = 0;
-
-			while (true)
-			{
-				/*
-				 * Data available? We have to return remaining data even if the
-				 * channel is already closed.
-				 */
-
-				stdoutAvail = c.stdoutWritepos - c.stdoutReadpos;
-				stderrAvail = c.stderrWritepos - c.stderrReadpos;
-
-				if ((!extended) && (stdoutAvail != 0))
-					break;
-
-				if ((extended) && (stderrAvail != 0))
-					break;
-
-				/* Do not wait if more data will never arrive (EOF or CLOSED) */
-
-				if ((c.EOF) || (c.state != Channel.STATE_OPEN))
-					return -1;
-
-				try
-				{
-					c.wait();
-				}
-				catch (InterruptedException ignore)
-				{
-				}
-			}
-
-			/* OK, there is some data. Return it. */
-
-			if (!extended)
-			{
-				copylen = (stdoutAvail > len) ? len : stdoutAvail;
-				System.arraycopy(c.stdoutBuffer, c.stdoutReadpos, target, off, copylen);
-				c.stdoutReadpos += copylen;
-
-				if (c.stdoutReadpos != c.stdoutWritepos)
-
-					System.arraycopy(c.stdoutBuffer, c.stdoutReadpos, c.stdoutBuffer, 0, c.stdoutWritepos
-							- c.stdoutReadpos);
-
-				c.stdoutWritepos -= c.stdoutReadpos;
-				c.stdoutReadpos = 0;
-			}
-			else
-			{
-				copylen = (stderrAvail > len) ? len : stderrAvail;
-				System.arraycopy(c.stderrBuffer, c.stderrReadpos, target, off, copylen);
-				c.stderrReadpos += copylen;
-
-				if (c.stderrReadpos != c.stderrWritepos)
-
-					System.arraycopy(c.stderrBuffer, c.stderrReadpos, c.stderrBuffer, 0, c.stderrWritepos
-							- c.stderrReadpos);
-
-				c.stderrWritepos -= c.stderrReadpos;
-				c.stderrReadpos = 0;
-			}
-
-			if (c.state != Channel.STATE_OPEN)
-				return copylen;
-
-			if (c.localWindow < ((Channel.CHANNEL_BUFFER_SIZE + 1) / 2))
-			{
-				int minFreeSpace = Math.min(Channel.CHANNEL_BUFFER_SIZE - c.stdoutWritepos, Channel.CHANNEL_BUFFER_SIZE
-						- c.stderrWritepos);
-
-				increment = minFreeSpace - c.localWindow;
-				c.localWindow = minFreeSpace;
-			}
-
-			remoteID = c.remoteID; /* read while holding the lock */
-			localID = c.localID; /* read while holding the lock */
-		}
-
-		/*
-		 * If a consumer reads stdout and stdin in parallel, we may end up with
-		 * sending two msgWindowAdjust messages. Luckily, it
-		 * does not matter in which order they arrive at the server.
-		 */
-
-		if (increment > 0)
-		{
-			if (log.isEnabled())
-				log.log(80, "Sending SSH_MSG_CHANNEL_WINDOW_ADJUST (channel " + localID + ", " + increment + ")");
-
-			synchronized (c.channelSendLock)
-			{
-				byte[] msg = c.msgWindowAdjust;
-
-				msg[0] = Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST;
-				msg[1] = (byte) (remoteID >> 24);
-				msg[2] = (byte) (remoteID >> 16);
-				msg[3] = (byte) (remoteID >> 8);
-				msg[4] = (byte) (remoteID);
-				msg[5] = (byte) (increment >> 24);
-				msg[6] = (byte) (increment >> 16);
-				msg[7] = (byte) (increment >> 8);
-				msg[8] = (byte) (increment);
-
-				if (c.closeMessageSent == false)
-					tm.sendMessage(msg);
-			}
-		}
-
-		return copylen;
-	}
-
-	public void msgChannelData(byte[] msg, int msglen) throws IOException
-	{
-		if (msglen <= 9)
-			throw new IOException("SSH_MSG_CHANNEL_DATA message has wrong size (" + msglen + ")");
-
-		int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-		int len = ((msg[5] & 0xff) << 24) | ((msg[6] & 0xff) << 16) | ((msg[7] & 0xff) << 8) | (msg[8] & 0xff);
-
-		Channel c = getChannel(id);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_DATA message for non-existent channel " + id);
-
-		if (len != (msglen - 9))
-			throw new IOException("SSH_MSG_CHANNEL_DATA message has wrong len (calculated " + (msglen - 9) + ", got "
-					+ len + ")");
-
-		if (log.isEnabled())
-			log.log(80, "Got SSH_MSG_CHANNEL_DATA (channel " + id + ", " + len + ")");
-
-		synchronized (c)
-		{
-			if (c.state == Channel.STATE_CLOSED)
-				return; // ignore
-
-			if (c.state != Channel.STATE_OPEN)
-				throw new IOException("Got SSH_MSG_CHANNEL_DATA, but channel is not in correct state (" + c.state + ")");
-
-			if (c.localWindow < len)
-				throw new IOException("Remote sent too much data, does not fit into window.");
-
-			c.localWindow -= len;
-
-			System.arraycopy(msg, 9, c.stdoutBuffer, c.stdoutWritepos, len);
-			c.stdoutWritepos += len;
-
-			c.notifyAll();
-		}
-	}
-
-	public void msgChannelWindowAdjust(byte[] msg, int msglen) throws IOException
-	{
-		if (msglen != 9)
-			throw new IOException("SSH_MSG_CHANNEL_WINDOW_ADJUST message has wrong size (" + msglen + ")");
-
-		int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-		int windowChange = ((msg[5] & 0xff) << 24) | ((msg[6] & 0xff) << 16) | ((msg[7] & 0xff) << 8) | (msg[8] & 0xff);
-
-		Channel c = getChannel(id);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_WINDOW_ADJUST message for non-existent channel " + id);
-
-		synchronized (c)
-		{
-			final long huge = 0xFFFFffffL; /* 2^32 - 1 */
-
-			c.remoteWindow += (windowChange & huge); /* avoid sign extension */
-
-			/* TODO - is this a good heuristic? */
-
-			if ((c.remoteWindow > huge))
-				c.remoteWindow = huge;
-
-			c.notifyAll();
-		}
-
-		if (log.isEnabled())
-			log.log(80, "Got SSH_MSG_CHANNEL_WINDOW_ADJUST (channel " + id + ", " + windowChange + ")");
-	}
-
-	public void msgChannelOpen(byte[] msg, int msglen) throws IOException
-	{
-		TypesReader tr = new TypesReader(msg, 0, msglen);
-
-		tr.readByte(); // skip packet type
-		String channelType = tr.readString();
-		int remoteID = tr.readUINT32(); /* sender channel */
-		int remoteWindow = tr.readUINT32(); /* initial window size */
-		int remoteMaxPacketSize = tr.readUINT32(); /* maximum packet size */
-
-		if ("x11".equals(channelType))
-		{
-			synchronized (x11_magic_cookies)
-			{
-				/* If we did not request X11 forwarding, then simply ignore this bogus request. */
-
-				if (x11_magic_cookies.size() == 0)
-				{
-					PacketChannelOpenFailure pcof = new PacketChannelOpenFailure(remoteID,
-							Packets.SSH_OPEN_ADMINISTRATIVELY_PROHIBITED, "X11 forwarding not activated", "");
-
-					tm.sendAsynchronousMessage(pcof.getPayload());
-
-					if (log.isEnabled())
-						log.log(20, "Unexpected X11 request, denying it!");
-
-					return;
-				}
-			}
-
-			String remoteOriginatorAddress = tr.readString();
-			int remoteOriginatorPort = tr.readUINT32();
-
-			Channel c = new Channel(this);
-
-			synchronized (c)
-			{
-				c.remoteID = remoteID;
-				c.remoteWindow = remoteWindow & 0xFFFFffffL; /* properly convert UINT32 to long */
-				c.remoteMaxPacketSize = remoteMaxPacketSize;
-				c.localID = addChannel(c);
-			}
-
-			/*
-			 * The open confirmation message will be sent from another thread
-			 */
-
-			RemoteX11AcceptThread rxat = new RemoteX11AcceptThread(c, remoteOriginatorAddress, remoteOriginatorPort);
-			rxat.setDaemon(true);
-			rxat.start();
-
-			return;
-		}
-
-		if ("forwarded-tcpip".equals(channelType))
-		{
-			String remoteConnectedAddress = tr.readString(); /* address that was connected */
-			int remoteConnectedPort = tr.readUINT32(); /* port that was connected */
-			String remoteOriginatorAddress = tr.readString(); /* originator IP address */
-			int remoteOriginatorPort = tr.readUINT32(); /* originator port */
-
-			RemoteForwardingData rfd = null;
-
-			synchronized (remoteForwardings)
-			{
-				rfd = remoteForwardings.get(Integer.valueOf(remoteConnectedPort));
-			}
-
-			if (rfd == null)
-			{
-				PacketChannelOpenFailure pcof = new PacketChannelOpenFailure(remoteID,
-						Packets.SSH_OPEN_ADMINISTRATIVELY_PROHIBITED,
-						"No thanks, unknown port in forwarded-tcpip request", "");
-
-				/* Always try to be polite. */
-
-				tm.sendAsynchronousMessage(pcof.getPayload());
-
-				if (log.isEnabled())
-					log.log(20, "Unexpected forwarded-tcpip request, denying it!");
-
-				return;
-			}
-
-			Channel c = new Channel(this);
-
-			synchronized (c)
-			{
-				c.remoteID = remoteID;
-				c.remoteWindow = remoteWindow & 0xFFFFffffL; /* convert UINT32 to long */
-				c.remoteMaxPacketSize = remoteMaxPacketSize;
-				c.localID = addChannel(c);
-			}
-
-			/*
-			 * The open confirmation message will be sent from another thread.
-			 */
-
-			RemoteAcceptThread rat = new RemoteAcceptThread(c, remoteConnectedAddress, remoteConnectedPort,
-					remoteOriginatorAddress, remoteOriginatorPort, rfd.targetAddress, rfd.targetPort);
-
-			rat.setDaemon(true);
-			rat.start();
-
-			return;
-		}
-
-		if ("auth-agent@openssh.com".equals(channelType)) {
-			Channel c = new Channel(this);
-
-			synchronized (c)
-			{
-				c.remoteID = remoteID;
-				c.remoteWindow = remoteWindow & 0xFFFFffffL; /* properly convert UINT32 to long */
-				c.remoteMaxPacketSize = remoteMaxPacketSize;
-				c.localID = addChannel(c);
-			}
-
-			AuthAgentForwardThread aat = new AuthAgentForwardThread(c, authAgent);
-
-			aat.setDaemon(true);
-			aat.start();
-
-			return;
-		}
-
-		/* Tell the server that we have no idea what it is talking about */
-
-		PacketChannelOpenFailure pcof = new PacketChannelOpenFailure(remoteID, Packets.SSH_OPEN_UNKNOWN_CHANNEL_TYPE,
-				"Unknown channel type", "");
-
-		tm.sendAsynchronousMessage(pcof.getPayload());
-
-		if (log.isEnabled())
-			log.log(20, "The peer tried to open an unsupported channel type (" + channelType + ")");
-	}
-
-	public void msgChannelRequest(byte[] msg, int msglen) throws IOException
-	{
-		TypesReader tr = new TypesReader(msg, 0, msglen);
-
-		tr.readByte(); // skip packet type
-		int id = tr.readUINT32();
-
-		Channel c = getChannel(id);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_REQUEST message for non-existent channel " + id);
-
-		String type = tr.readString("US-ASCII");
-		boolean wantReply = tr.readBoolean();
-
-		if (log.isEnabled())
-			log.log(80, "Got SSH_MSG_CHANNEL_REQUEST (channel " + id + ", '" + type + "')");
-
-		if (type.equals("exit-status"))
-		{
-			if (wantReply != false)
-				throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message, 'want reply' is true");
-
-			int exit_status = tr.readUINT32();
-
-			if (tr.remain() != 0)
-				throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");
-
-			synchronized (c)
-			{
-				c.exit_status = Integer.valueOf(exit_status);
-				c.notifyAll();
-			}
-
-			if (log.isEnabled())
-				log.log(50, "Got EXIT STATUS (channel " + id + ", status " + exit_status + ")");
-
-			return;
-		}
-
-		if (type.equals("exit-signal"))
-		{
-			if (wantReply != false)
-				throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message, 'want reply' is true");
-
-			String signame = tr.readString("US-ASCII");
-			tr.readBoolean();
-			tr.readString();
-			tr.readString();
-
-			if (tr.remain() != 0)
-				throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");
-
-			synchronized (c)
-			{
-				c.exit_signal = signame;
-				c.notifyAll();
-			}
-
-			if (log.isEnabled())
-				log.log(50, "Got EXIT SIGNAL (channel " + id + ", signal " + signame + ")");
-
-			return;
-		}
-
-		/* We simply ignore unknown channel requests, however, if the server wants a reply,
-		 * then we signal that we have no idea what it is about.
-		 */
-
-		if (wantReply)
-		{
-			byte[] reply = new byte[5];
-
-			reply[0] = Packets.SSH_MSG_CHANNEL_FAILURE;
-			reply[1] = (byte) (c.remoteID >> 24);
-			reply[2] = (byte) (c.remoteID >> 16);
-			reply[3] = (byte) (c.remoteID >> 8);
-			reply[4] = (byte) (c.remoteID);
-
-			tm.sendAsynchronousMessage(reply);
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Channel request '" + type + "' is not known, ignoring it");
-	}
-
-	public void msgChannelEOF(byte[] msg, int msglen) throws IOException
-	{
-		if (msglen != 5)
-			throw new IOException("SSH_MSG_CHANNEL_EOF message has wrong size (" + msglen + ")");
-
-		int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-
-		Channel c = getChannel(id);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_EOF message for non-existent channel " + id);
-
-		synchronized (c)
-		{
-			c.EOF = true;
-			c.notifyAll();
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Got SSH_MSG_CHANNEL_EOF (channel " + id + ")");
-	}
-
-	public void msgChannelClose(byte[] msg, int msglen) throws IOException
-	{
-		if (msglen != 5)
-			throw new IOException("SSH_MSG_CHANNEL_CLOSE message has wrong size (" + msglen + ")");
-
-		int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-
-		Channel c = getChannel(id);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_CLOSE message for non-existent channel " + id);
-
-		synchronized (c)
-		{
-			c.EOF = true;
-			c.state = Channel.STATE_CLOSED;
-			c.setReasonClosed("Close requested by remote");
-			c.closeMessageRecv = true;
-
-			removeChannel(c.localID);
-
-			c.notifyAll();
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Got SSH_MSG_CHANNEL_CLOSE (channel " + id + ")");
-	}
-
-	public void msgChannelSuccess(byte[] msg, int msglen) throws IOException
-	{
-		if (msglen != 5)
-			throw new IOException("SSH_MSG_CHANNEL_SUCCESS message has wrong size (" + msglen + ")");
-
-		int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-
-		Channel c = getChannel(id);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_SUCCESS message for non-existent channel " + id);
-
-		synchronized (c)
-		{
-			c.successCounter++;
-			c.notifyAll();
-		}
-
-		if (log.isEnabled())
-			log.log(80, "Got SSH_MSG_CHANNEL_SUCCESS (channel " + id + ")");
-	}
-
-	public void msgChannelFailure(byte[] msg, int msglen) throws IOException
-	{
-		if (msglen != 5)
-			throw new IOException("SSH_MSG_CHANNEL_FAILURE message has wrong size (" + msglen + ")");
-
-		int id = ((msg[1] & 0xff) << 24) | ((msg[2] & 0xff) << 16) | ((msg[3] & 0xff) << 8) | (msg[4] & 0xff);
-
-		Channel c = getChannel(id);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_FAILURE message for non-existent channel " + id);
-
-		synchronized (c)
-		{
-			c.failedCounter++;
-			c.notifyAll();
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Got SSH_MSG_CHANNEL_FAILURE (channel " + id + ")");
-	}
-
-	public void msgChannelOpenConfirmation(byte[] msg, int msglen) throws IOException
-	{
-		PacketChannelOpenConfirmation sm = new PacketChannelOpenConfirmation(msg, 0, msglen);
-
-		Channel c = getChannel(sm.recipientChannelID);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_OPEN_CONFIRMATION message for non-existent channel "
-					+ sm.recipientChannelID);
-
-		synchronized (c)
-		{
-			if (c.state != Channel.STATE_OPENING)
-				throw new IOException("Unexpected SSH_MSG_CHANNEL_OPEN_CONFIRMATION message for channel "
-						+ sm.recipientChannelID);
-
-			c.remoteID = sm.senderChannelID;
-			c.remoteWindow = sm.initialWindowSize & 0xFFFFffffL; /* convert UINT32 to long */
-			c.remoteMaxPacketSize = sm.maxPacketSize;
-			c.state = Channel.STATE_OPEN;
-			c.notifyAll();
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Got SSH_MSG_CHANNEL_OPEN_CONFIRMATION (channel " + sm.recipientChannelID + " / remote: "
-					+ sm.senderChannelID + ")");
-	}
-
-	public void msgChannelOpenFailure(byte[] msg, int msglen) throws IOException
-	{
-		if (msglen < 5)
-			throw new IOException("SSH_MSG_CHANNEL_OPEN_FAILURE message has wrong size (" + msglen + ")");
-
-		TypesReader tr = new TypesReader(msg, 0, msglen);
-
-		tr.readByte(); // skip packet type
-		int id = tr.readUINT32(); /* sender channel */
-
-		Channel c = getChannel(id);
-
-		if (c == null)
-			throw new IOException("Unexpected SSH_MSG_CHANNEL_OPEN_FAILURE message for non-existent channel " + id);
-
-		int reasonCode = tr.readUINT32();
-		String description = tr.readString("UTF-8");
-
-		String reasonCodeSymbolicName = null;
-
-		switch (reasonCode)
-		{
-		case 1:
-			reasonCodeSymbolicName = "SSH_OPEN_ADMINISTRATIVELY_PROHIBITED";
-			break;
-		case 2:
-			reasonCodeSymbolicName = "SSH_OPEN_CONNECT_FAILED";
-			break;
-		case 3:
-			reasonCodeSymbolicName = "SSH_OPEN_UNKNOWN_CHANNEL_TYPE";
-			break;
-		case 4:
-			reasonCodeSymbolicName = "SSH_OPEN_RESOURCE_SHORTAGE";
-			break;
-		default:
-			reasonCodeSymbolicName = "UNKNOWN REASON CODE (" + reasonCode + ")";
-		}
-
-		StringBuffer descriptionBuffer = new StringBuffer();
-		descriptionBuffer.append(description);
-
-		for (int i = 0; i < descriptionBuffer.length(); i++)
-		{
-			char cc = descriptionBuffer.charAt(i);
-
-			if ((cc >= 32) && (cc <= 126))
-				continue;
-			descriptionBuffer.setCharAt(i, '\uFFFD');
-		}
-
-		synchronized (c)
-		{
-			c.EOF = true;
-			c.state = Channel.STATE_CLOSED;
-			c.setReasonClosed("The server refused to open the channel (" + reasonCodeSymbolicName + ", '"
-					+ descriptionBuffer.toString() + "')");
-			c.notifyAll();
-		}
-
-		if (log.isEnabled())
-			log.log(50, "Got SSH_MSG_CHANNEL_OPEN_FAILURE (channel " + id + ")");
-	}
-
-	public void msgGlobalRequest(byte[] msg, int msglen) throws IOException
-	{
-		/* Currently we do not support any kind of global request */
-
-		TypesReader tr = new TypesReader(msg, 0, msglen);
-
-		tr.readByte(); // skip packet type
-		String requestName = tr.readString();
-		boolean wantReply = tr.readBoolean();
-
-		if (wantReply)
-		{
-			byte[] reply_failure = new byte[1];
-			reply_failure[0] = Packets.SSH_MSG_REQUEST_FAILURE;
-
-			tm.sendAsynchronousMessage(reply_failure);
-		}
-
-		/* We do not clean up the requestName String - that is OK for debug */
-
-		if (log.isEnabled())
-			log.log(80, "Got SSH_MSG_GLOBAL_REQUEST (" + requestName + ")");
-	}
-
-	public void msgGlobalSuccess() throws IOException
-	{
-		synchronized (channels)
-		{
-			globalSuccessCounter++;
-			channels.notifyAll();
-		}
-
-		if (log.isEnabled())
-			log.log(80, "Got SSH_MSG_REQUEST_SUCCESS");
-	}
-
-	public void msgGlobalFailure() throws IOException
-	{
-		synchronized (channels)
-		{
-			globalFailedCounter++;
-			channels.notifyAll();
-		}
-
-		if (log.isEnabled())
-			log.log(80, "Got SSH_MSG_REQUEST_FAILURE");
-	}
-
-	public void handleMessage(byte[] msg, int msglen) throws IOException
-	{
-		if (msg == null)
-		{
-			if (log.isEnabled())
-				log.log(50, "HandleMessage: got shutdown");
-
-			synchronized (listenerThreads)
-			{
-				for (int i = 0; i < listenerThreads.size(); i++)
-				{
-					IChannelWorkerThread lat = listenerThreads.elementAt(i);
-					lat.stopWorking();
-				}
-				listenerThreadsAllowed = false;
-			}
-
-			synchronized (channels)
-			{
-				shutdown = true;
-
-				for (int i = 0; i < channels.size(); i++)
-				{
-					Channel c = channels.elementAt(i);
-					synchronized (c)
-					{
-						c.EOF = true;
-						c.state = Channel.STATE_CLOSED;
-						c.setReasonClosed("The connection is being shutdown");
-						c.closeMessageRecv = true; /*
-																															 * You never know, perhaps
-																															 * we are waiting for a
-																															 * pending close message
-																															 * from the server...
-																															 */
-						c.notifyAll();
-					}
-				}
-				/* Works with J2ME */
-				channels.setSize(0);
-				channels.trimToSize();
-				channels.notifyAll(); /* Notify global response waiters */
-				return;
-			}
-		}
-
-		switch (msg[0])
-		{
-		case Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION:
-			msgChannelOpenConfirmation(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST:
-			msgChannelWindowAdjust(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_DATA:
-			msgChannelData(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_EXTENDED_DATA:
-			msgChannelExtendedData(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_REQUEST:
-			msgChannelRequest(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_EOF:
-			msgChannelEOF(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_OPEN:
-			msgChannelOpen(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_CLOSE:
-			msgChannelClose(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_SUCCESS:
-			msgChannelSuccess(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_FAILURE:
-			msgChannelFailure(msg, msglen);
-			break;
-		case Packets.SSH_MSG_CHANNEL_OPEN_FAILURE:
-			msgChannelOpenFailure(msg, msglen);
-			break;
-		case Packets.SSH_MSG_GLOBAL_REQUEST:
-			msgGlobalRequest(msg, msglen);
-			break;
-		case Packets.SSH_MSG_REQUEST_SUCCESS:
-			msgGlobalSuccess();
-			break;
-		case Packets.SSH_MSG_REQUEST_FAILURE:
-			msgGlobalFailure();
-			break;
-		default:
-			throw new IOException("Cannot handle unknown channel message " + (msg[0] & 0xff));
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/ChannelOutputStream.java b/app/src/main/java/com/trilead/ssh2/channel/ChannelOutputStream.java
deleted file mode 100644
index c1d56e8..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/ChannelOutputStream.java
+++ /dev/null
@@ -1,71 +0,0 @@
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.OutputStream;
-
-/**
- * ChannelOutputStream.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ChannelOutputStream.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public final class ChannelOutputStream extends OutputStream
-{
-	Channel c;
-
-	private byte[] writeBuffer;
-
-	boolean isClosed = false;
-	
-	ChannelOutputStream(Channel c)
-	{
-		this.c = c;
-		writeBuffer = new byte[1];
-	}
-
-	public void write(int b) throws IOException
-	{	
-		writeBuffer[0] = (byte) b;
-		
-		write(writeBuffer, 0, 1);
-	}
-
-	public void close() throws IOException
-	{
-		if (isClosed == false)
-		{
-			isClosed = true;
-			c.cm.sendEOF(c);
-		}
-	}
-
-	public void flush() throws IOException
-	{
-		if (isClosed)
-			throw new IOException("This OutputStream is closed.");
-
-		/* This is a no-op, since this stream is unbuffered */
-	}
-
-	public void write(byte[] b, int off, int len) throws IOException
-	{
-		if (isClosed)
-			throw new IOException("This OutputStream is closed.");
-		
-		if (b == null)
-			throw new NullPointerException();
-
-		if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length))
-			throw new IndexOutOfBoundsException();
-
-		if (len == 0)
-			return;
-		
-		c.cm.sendData(c, b, off, len);
-	}
-
-	public void write(byte[] b) throws IOException
-	{
-		write(b, 0, b.length);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/DynamicAcceptThread.java b/app/src/main/java/com/trilead/ssh2/channel/DynamicAcceptThread.java
deleted file mode 100644
index ef3a3d0..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/DynamicAcceptThread.java
+++ /dev/null
@@ -1,284 +0,0 @@
-/*
- * ConnectBot: simple, powerful, open-source SSH client for Android
- * Copyright 2007 Kenny Root, Jeffrey Sharkey
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InterruptedIOException;
-import java.io.OutputStream;
-import java.io.PushbackInputStream;
-import java.net.ConnectException;
-import java.net.InetAddress;
-import java.net.InetSocketAddress;
-import java.net.NoRouteToHostException;
-import java.net.ServerSocket;
-import java.net.Socket;
-
-import net.sourceforge.jsocks.Proxy;
-import net.sourceforge.jsocks.ProxyMessage;
-import net.sourceforge.jsocks.Socks4Message;
-import net.sourceforge.jsocks.Socks5Message;
-import net.sourceforge.jsocks.SocksException;
-import net.sourceforge.jsocks.server.ServerAuthenticator;
-import net.sourceforge.jsocks.server.ServerAuthenticatorNone;
-
-/**
- * DynamicAcceptThread.
- *
- * @author Kenny Root
- * @version $Id$
- */
-public class DynamicAcceptThread extends Thread implements IChannelWorkerThread {
-	private ChannelManager cm;
-	private ServerSocket ss;
-
-	class DynamicAcceptRunnable implements Runnable {
-		private static final int idleTimeout	= 180000; //3 minutes
-
-		private ServerAuthenticator auth;
-		private Socket sock;
-		private InputStream in;
-		private OutputStream out;
-		private ProxyMessage msg;
-
-		public DynamicAcceptRunnable(ServerAuthenticator auth, Socket sock) {
-			this.auth = auth;
-			this.sock = sock;
-
-			setName("DynamicAcceptRunnable");
-		}
-
-		public void run() {
-			try {
-				startSession();
-			} catch (IOException ioe) {
-				int error_code = Proxy.SOCKS_FAILURE;
-
-				if (ioe instanceof SocksException)
-					error_code = ((SocksException) ioe).errCode;
-				else if (ioe instanceof NoRouteToHostException)
-					error_code = Proxy.SOCKS_HOST_UNREACHABLE;
-				else if (ioe instanceof ConnectException)
-					error_code = Proxy.SOCKS_CONNECTION_REFUSED;
-				else if (ioe instanceof InterruptedIOException)
-					error_code = Proxy.SOCKS_TTL_EXPIRE;
-
-				if (error_code > Proxy.SOCKS_ADDR_NOT_SUPPORTED
-						|| error_code < 0) {
-					error_code = Proxy.SOCKS_FAILURE;
-				}
-
-				sendErrorMessage(error_code);
-			} finally {
-				if (auth != null)
-					auth.endSession();
-			}
-		}
-
-		private ProxyMessage readMsg(InputStream in) throws IOException {
-			PushbackInputStream push_in;
-			if (in instanceof PushbackInputStream)
-				push_in = (PushbackInputStream) in;
-			else
-				push_in = new PushbackInputStream(in);
-
-			int version = push_in.read();
-			push_in.unread(version);
-
-			ProxyMessage msg;
-
-			if (version == 5) {
-				msg = new Socks5Message(push_in, false);
-			} else if (version == 4) {
-				msg = new Socks4Message(push_in, false);
-			} else {
-				throw new SocksException(Proxy.SOCKS_FAILURE);
-			}
-			return msg;
-		}
-
-		private void sendErrorMessage(int error_code) {
-			ProxyMessage err_msg;
-			if (msg instanceof Socks4Message)
-				err_msg = new Socks4Message(Socks4Message.REPLY_REJECTED);
-			else
-				err_msg = new Socks5Message(error_code);
-			try {
-				err_msg.write(out);
-			} catch (IOException ioe) {
-			}
-		}
-
-		private void handleRequest(ProxyMessage msg) throws IOException {
-			if (!auth.checkRequest(msg))
-				throw new SocksException(Proxy.SOCKS_FAILURE);
-
-			switch (msg.command) {
-			case Proxy.SOCKS_CMD_CONNECT:
-				onConnect(msg);
-				break;
-			default:
-				throw new SocksException(Proxy.SOCKS_CMD_NOT_SUPPORTED);
-			}
-		}
-
-		private void startSession() throws IOException {
-			sock.setSoTimeout(idleTimeout);
-
-			try {
-				auth = auth.startSession(sock);
-			} catch (IOException ioe) {
-				System.out.println("Could not start SOCKS session");
-				ioe.printStackTrace();
-				auth = null;
-				return;
-			}
-
-			if (auth == null) { // Authentication failed
-				System.out.println("SOCKS auth failed");
-				return;
-			}
-
-			in = auth.getInputStream();
-			out = auth.getOutputStream();
-
-			msg = readMsg(in);
-			handleRequest(msg);
-		}
-
-		private void onConnect(ProxyMessage msg) throws IOException {
-			ProxyMessage response = null;
-			Channel cn = null;
-			StreamForwarder r2l = null;
-			StreamForwarder l2r = null;
-
-			if (msg instanceof Socks5Message) {
-				response = new Socks5Message(Proxy.SOCKS_SUCCESS, (InetAddress)null, 0);
-			} else {
-				response = new Socks4Message(Socks4Message.REPLY_OK, (InetAddress)null, 0);
-			}
-			response.write(out);
-
-			String destHost = msg.host;
-			if (msg.ip != null)
-				destHost = msg.ip.getHostAddress();
-
-			try {
-				/*
-				 * This may fail, e.g., if the remote port is closed (in
-				 * optimistic terms: not open yet)
-				 */
-
-				cn = cm.openDirectTCPIPChannel(destHost, msg.port,
-						"127.0.0.1", 0);
-
-			} catch (IOException e) {
-				/*
-				 * Simply close the local socket and wait for the next incoming
-				 * connection
-				 */
-
-				try {
-					sock.close();
-				} catch (IOException ignore) {
-				}
-
-				return;
-			}
-
-			try {
-				r2l = new StreamForwarder(cn, null, sock, cn.stdoutStream, out, "RemoteToLocal");
-				l2r = new StreamForwarder(cn, r2l, sock, in, cn.stdinStream, "LocalToRemote");
-			} catch (IOException e) {
-				try {
-					/*
-					 * This message is only visible during debugging, since we
-					 * discard the channel immediatelly
-					 */
-					cn.cm.closeChannel(cn,
-							"Weird error during creation of StreamForwarder ("
-									+ e.getMessage() + ")", true);
-				} catch (IOException ignore) {
-				}
-
-				return;
-			}
-
-			r2l.setDaemon(true);
-			l2r.setDaemon(true);
-			r2l.start();
-			l2r.start();
-		}
-	}
-
-	public DynamicAcceptThread(ChannelManager cm, int local_port)
-			throws IOException {
-		this.cm = cm;
-
-		setName("DynamicAcceptThread");
-
-		ss = new ServerSocket(local_port);
-	}
-
-	public DynamicAcceptThread(ChannelManager cm, InetSocketAddress localAddress)
-			throws IOException {
-		this.cm = cm;
-
-		ss = new ServerSocket();
-		ss.bind(localAddress);
-	}
-
-	@Override
-	public void run() {
-		try {
-			cm.registerThread(this);
-		} catch (IOException e) {
-			stopWorking();
-			return;
-		}
-
-		while (true) {
-			Socket sock = null;
-
-			try {
-				sock = ss.accept();
-			} catch (IOException e) {
-				stopWorking();
-				return;
-			}
-
-			DynamicAcceptRunnable dar = new DynamicAcceptRunnable(new ServerAuthenticatorNone(), sock);
-			Thread t = new Thread(dar);
-			t.setDaemon(true);
-			t.start();
-		}
-	}
-
-	/*
-	 * (non-Javadoc)
-	 *
-	 * @see com.trilead.ssh2.channel.IChannelWorkerThread#stopWorking()
-	 */
-	public void stopWorking() {
-		try {
-			/* This will lead to an IOException in the ss.accept() call */
-			ss.close();
-		} catch (IOException e) {
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/IChannelWorkerThread.java b/app/src/main/java/com/trilead/ssh2/channel/IChannelWorkerThread.java
deleted file mode 100644
index bce9b1b..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/IChannelWorkerThread.java
+++ /dev/null
@@ -1,13 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-/**
- * IChannelWorkerThread.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: IChannelWorkerThread.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-interface IChannelWorkerThread
-{
-	public void stopWorking();
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/LocalAcceptThread.java b/app/src/main/java/com/trilead/ssh2/channel/LocalAcceptThread.java
deleted file mode 100644
index 0d1bb35..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/LocalAcceptThread.java
+++ /dev/null
@@ -1,135 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.ServerSocket;
-import java.net.Socket;
-
-/**
- * LocalAcceptThread.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: LocalAcceptThread.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class LocalAcceptThread extends Thread implements IChannelWorkerThread
-{
-	ChannelManager cm;
-	String host_to_connect;
-	int port_to_connect;
-
-	final ServerSocket ss;
-
-	public LocalAcceptThread(ChannelManager cm, int local_port, String host_to_connect, int port_to_connect)
-			throws IOException
-	{
-		this.cm = cm;
-		this.host_to_connect = host_to_connect;
-		this.port_to_connect = port_to_connect;
-
-		ss = new ServerSocket(local_port);
-	}
-
-	public LocalAcceptThread(ChannelManager cm, InetSocketAddress localAddress, String host_to_connect,
-			int port_to_connect) throws IOException
-	{
-		this.cm = cm;
-		this.host_to_connect = host_to_connect;
-		this.port_to_connect = port_to_connect;
-
-		ss = new ServerSocket();
-		ss.bind(localAddress);
-	}
-
-	public void run()
-	{
-		try
-		{
-			cm.registerThread(this);
-		}
-		catch (IOException e)
-		{
-			stopWorking();
-			return;
-		}
-
-		while (true)
-		{
-			Socket s = null;
-
-			try
-			{
-				s = ss.accept();
-			}
-			catch (IOException e)
-			{
-				stopWorking();
-				return;
-			}
-
-			Channel cn = null;
-			StreamForwarder r2l = null;
-			StreamForwarder l2r = null;
-
-			try
-			{
-				/* This may fail, e.g., if the remote port is closed (in optimistic terms: not open yet) */
-
-				cn = cm.openDirectTCPIPChannel(host_to_connect, port_to_connect, s.getInetAddress().getHostAddress(), s
-						.getPort());
-
-			}
-			catch (IOException e)
-			{
-				/* Simply close the local socket and wait for the next incoming connection */
-
-				try
-				{
-					s.close();
-				}
-				catch (IOException ignore)
-				{
-				}
-
-				continue;
-			}
-
-			try
-			{
-				r2l = new StreamForwarder(cn, null, s, cn.stdoutStream, s.getOutputStream(), "RemoteToLocal");
-				l2r = new StreamForwarder(cn, r2l, s, s.getInputStream(), cn.stdinStream, "LocalToRemote");
-			}
-			catch (IOException e)
-			{
-				try
-				{
-					/* This message is only visible during debugging, since we discard the channel immediatelly */
-					cn.cm.closeChannel(cn, "Weird error during creation of StreamForwarder (" + e.getMessage() + ")",
-							true);
-				}
-				catch (IOException ignore)
-				{
-				}
-
-				continue;
-			}
-
-			r2l.setDaemon(true);
-			l2r.setDaemon(true);
-			r2l.start();
-			l2r.start();
-		}
-	}
-
-	public void stopWorking()
-	{
-		try
-		{
-			/* This will lead to an IOException in the ss.accept() call */
-			ss.close();
-		}
-		catch (IOException e)
-		{
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/RemoteAcceptThread.java b/app/src/main/java/com/trilead/ssh2/channel/RemoteAcceptThread.java
deleted file mode 100644
index 29b02b8..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/RemoteAcceptThread.java
+++ /dev/null
@@ -1,103 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.net.Socket;
-
-import com.trilead.ssh2.log.Logger;
-
-
-/**
- * RemoteAcceptThread.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RemoteAcceptThread.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class RemoteAcceptThread extends Thread
-{
-	private static final Logger log = Logger.getLogger(RemoteAcceptThread.class);
-
-	Channel c;
-
-	String remoteConnectedAddress;
-	int remoteConnectedPort;
-	String remoteOriginatorAddress;
-	int remoteOriginatorPort;
-	String targetAddress;
-	int targetPort;
-
-	Socket s;
-
-	public RemoteAcceptThread(Channel c, String remoteConnectedAddress, int remoteConnectedPort,
-			String remoteOriginatorAddress, int remoteOriginatorPort, String targetAddress, int targetPort)
-	{
-		this.c = c;
-		this.remoteConnectedAddress = remoteConnectedAddress;
-		this.remoteConnectedPort = remoteConnectedPort;
-		this.remoteOriginatorAddress = remoteOriginatorAddress;
-		this.remoteOriginatorPort = remoteOriginatorPort;
-		this.targetAddress = targetAddress;
-		this.targetPort = targetPort;
-
-		if (log.isEnabled())
-			log.log(20, "RemoteAcceptThread: " + remoteConnectedAddress + "/" + remoteConnectedPort + ", R: "
-					+ remoteOriginatorAddress + "/" + remoteOriginatorPort);
-	}
-
-	public void run()
-	{
-		try
-		{
-			c.cm.sendOpenConfirmation(c);
-
-			s = new Socket(targetAddress, targetPort);
-
-			StreamForwarder r2l = new StreamForwarder(c, null, s, c.getStdoutStream(), s.getOutputStream(),
-					"RemoteToLocal");
-			StreamForwarder l2r = new StreamForwarder(c, null, null, s.getInputStream(), c.getStdinStream(),
-					"LocalToRemote");
-
-			/* No need to start two threads, one can be executed in the current thread */
-			
-			r2l.setDaemon(true);
-			r2l.start();
-			l2r.run();
-
-			while (r2l.isAlive())
-			{
-				try
-				{
-					r2l.join();
-				}
-				catch (InterruptedException e)
-				{
-				}
-			}
-
-			/* If the channel is already closed, then this is a no-op */
-
-			c.cm.closeChannel(c, "EOF on both streams reached.", true);
-			s.close();
-		}
-		catch (IOException e)
-		{
-			log.log(50, "IOException in proxy code: " + e.getMessage());
-
-			try
-			{
-				c.cm.closeChannel(c, "IOException in proxy code (" + e.getMessage() + ")", true);
-			}
-			catch (IOException e1)
-			{
-			}
-			try
-			{
-				if (s != null)
-					s.close();
-			}
-			catch (IOException e1)
-			{
-			}
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/RemoteForwardingData.java b/app/src/main/java/com/trilead/ssh2/channel/RemoteForwardingData.java
deleted file mode 100644
index d05378e..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/RemoteForwardingData.java
+++ /dev/null
@@ -1,17 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-/**
- * RemoteForwardingData. Data about a requested remote forwarding.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RemoteForwardingData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class RemoteForwardingData
-{
-	public String bindAddress;
-	public int bindPort;
-
-	String targetAddress;
-	int targetPort;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/RemoteX11AcceptThread.java b/app/src/main/java/com/trilead/ssh2/channel/RemoteX11AcceptThread.java
deleted file mode 100644
index 9f99410..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/RemoteX11AcceptThread.java
+++ /dev/null
@@ -1,240 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.Socket;
-
-import com.trilead.ssh2.log.Logger;
-
-
-/**
- * RemoteX11AcceptThread.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RemoteX11AcceptThread.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class RemoteX11AcceptThread extends Thread
-{
-	private static final Logger log = Logger.getLogger(RemoteX11AcceptThread.class);
-
-	Channel c;
-
-	String remoteOriginatorAddress;
-	int remoteOriginatorPort;
-
-	Socket s;
-
-	public RemoteX11AcceptThread(Channel c, String remoteOriginatorAddress, int remoteOriginatorPort)
-	{
-		this.c = c;
-		this.remoteOriginatorAddress = remoteOriginatorAddress;
-		this.remoteOriginatorPort = remoteOriginatorPort;
-	}
-
-	public void run()
-	{
-		try
-		{
-			/* Send Open Confirmation */
-
-			c.cm.sendOpenConfirmation(c);
-
-			/* Read startup packet from client */
-
-			OutputStream remote_os = c.getStdinStream();
-			InputStream remote_is = c.getStdoutStream();
-
-			/* The following code is based on the protocol description given in:
-			 * Scheifler/Gettys,
-			 * X Windows System: Core and Extension Protocols:
-			 * X Version 11, Releases 6 and 6.1 ISBN 1-55558-148-X
-			 */
-
-			/*
-			 * Client startup:
-			 * 
-			 * 1 0X42 MSB first/0x6c lSB first - byteorder
-			 * 1 - unused
-			 * 2 card16 - protocol-major-version
-			 * 2 card16 - protocol-minor-version
-			 * 2 n - lenght of authorization-protocol-name
-			 * 2 d - lenght of authorization-protocol-data
-			 * 2 - unused
-			 * string8 - authorization-protocol-name
-			 * p - unused, p=pad(n)
-			 * string8 - authorization-protocol-data
-			 * q - unused, q=pad(d)
-			 * 
-			 * pad(X) = (4 - (X mod 4)) mod 4
-			 * 
-			 * Server response:
-			 * 
-			 * 1 (0 failed, 2 authenticate, 1 success)
-			 * ...
-			 * 
-			 */
-
-			/* Later on we will simply forward the first 6 header bytes to the "real" X11 server */
-
-			byte[] header = new byte[6];
-
-			if (remote_is.read(header) != 6)
-				throw new IOException("Unexpected EOF on X11 startup!");
-
-			if ((header[0] != 0x42) && (header[0] != 0x6c)) // 0x42 MSB first, 0x6C LSB first
-				throw new IOException("Unknown endian format in X11 message!");
-
-			/* Yes, I came up with this myself - shall I file an application for a patent? =) */
-			
-			int idxMSB = (header[0] == 0x42) ? 0 : 1;
-
-			/* Read authorization data header */
-
-			byte[] auth_buff = new byte[6];
-
-			if (remote_is.read(auth_buff) != 6)
-				throw new IOException("Unexpected EOF on X11 startup!");
-
-			int authProtocolNameLength = ((auth_buff[idxMSB] & 0xff) << 8) | (auth_buff[1 - idxMSB] & 0xff);
-			int authProtocolDataLength = ((auth_buff[2 + idxMSB] & 0xff) << 8) | (auth_buff[3 - idxMSB] & 0xff);
-
-			if ((authProtocolNameLength > 256) || (authProtocolDataLength > 256))
-				throw new IOException("Buggy X11 authorization data");
-
-			int authProtocolNamePadding = ((4 - (authProtocolNameLength % 4)) % 4);
-			int authProtocolDataPadding = ((4 - (authProtocolDataLength % 4)) % 4);
-
-			byte[] authProtocolName = new byte[authProtocolNameLength];
-			byte[] authProtocolData = new byte[authProtocolDataLength];
-
-			byte[] paddingBuffer = new byte[4];
-
-			if (remote_is.read(authProtocolName) != authProtocolNameLength)
-				throw new IOException("Unexpected EOF on X11 startup! (authProtocolName)");
-
-			if (remote_is.read(paddingBuffer, 0, authProtocolNamePadding) != authProtocolNamePadding)
-				throw new IOException("Unexpected EOF on X11 startup! (authProtocolNamePadding)");
-
-			if (remote_is.read(authProtocolData) != authProtocolDataLength)
-				throw new IOException("Unexpected EOF on X11 startup! (authProtocolData)");
-
-			if (remote_is.read(paddingBuffer, 0, authProtocolDataPadding) != authProtocolDataPadding)
-				throw new IOException("Unexpected EOF on X11 startup! (authProtocolDataPadding)");
-
-			if ("MIT-MAGIC-COOKIE-1".equals(new String(authProtocolName, "ISO-8859-1")) == false)
-				throw new IOException("Unknown X11 authorization protocol!");
-
-			if (authProtocolDataLength != 16)
-				throw new IOException("Wrong data length for X11 authorization data!");
-
-			StringBuffer tmp = new StringBuffer(32);
-			for (int i = 0; i < authProtocolData.length; i++)
-			{
-				String digit2 = Integer.toHexString(authProtocolData[i] & 0xff);
-				tmp.append((digit2.length() == 2) ? digit2 : "0" + digit2);
-			}
-			String hexEncodedFakeCookie = tmp.toString();
-
-			/* Order is very important here - it may be that a certain x11 forwarding
-			 * gets disabled right in the moment when we check and register our connection
-			 * */
-
-			synchronized (c)
-			{
-				/* Please read the comment in Channel.java */
-				c.hexX11FakeCookie = hexEncodedFakeCookie;
-			}
-
-			/* Now check our fake cookie directory to see if we produced this cookie */
-
-			X11ServerData sd = c.cm.checkX11Cookie(hexEncodedFakeCookie);
-
-			if (sd == null)
-				throw new IOException("Invalid X11 cookie received.");
-
-			/* If the session which corresponds to this cookie is closed then we will
-			 * detect this: the session's close code will close all channels
-			 * with the session's assigned x11 fake cookie.
-			 */
-
-			s = new Socket(sd.hostname, sd.port);
-
-			OutputStream x11_os = s.getOutputStream();
-			InputStream x11_is = s.getInputStream();
-
-			/* Now we are sending the startup packet to the real X11 server */
-
-			x11_os.write(header);
-
-			if (sd.x11_magic_cookie == null)
-			{
-				byte[] emptyAuthData = new byte[6];
-				/* empty auth data, hopefully you are connecting to localhost =) */
-				x11_os.write(emptyAuthData);
-			}
-			else
-			{
-				if (sd.x11_magic_cookie.length != 16)
-					throw new IOException("The real X11 cookie has an invalid length!");
-
-				/* send X11 cookie specified by client */
-				x11_os.write(auth_buff);
-				x11_os.write(authProtocolName); /* re-use */
-				x11_os.write(paddingBuffer, 0, authProtocolNamePadding);
-				x11_os.write(sd.x11_magic_cookie);
-				x11_os.write(paddingBuffer, 0, authProtocolDataPadding);
-			}
-
-			x11_os.flush();
-
-			/* Start forwarding traffic */
-
-			StreamForwarder r2l = new StreamForwarder(c, null, s, remote_is, x11_os, "RemoteToX11");
-			StreamForwarder l2r = new StreamForwarder(c, null, null, x11_is, remote_os, "X11ToRemote");
-
-			/* No need to start two threads, one can be executed in the current thread */
-
-			r2l.setDaemon(true);
-			r2l.start();
-			l2r.run();
-
-			while (r2l.isAlive())
-			{
-				try
-				{
-					r2l.join();
-				}
-				catch (InterruptedException e)
-				{
-				}
-			}
-
-			/* If the channel is already closed, then this is a no-op */
-
-			c.cm.closeChannel(c, "EOF on both X11 streams reached.", true);
-			s.close();
-		}
-		catch (IOException e)
-		{
-			log.log(50, "IOException in X11 proxy code: " + e.getMessage());
-
-			try
-			{
-				c.cm.closeChannel(c, "IOException in X11 proxy code (" + e.getMessage() + ")", true);
-			}
-			catch (IOException e1)
-			{
-			}
-			try
-			{
-				if (s != null)
-					s.close();
-			}
-			catch (IOException e1)
-			{
-			}
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/StreamForwarder.java b/app/src/main/java/com/trilead/ssh2/channel/StreamForwarder.java
deleted file mode 100644
index e1afee8..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/StreamForwarder.java
+++ /dev/null
@@ -1,113 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.Socket;
-
-/**
- * A StreamForwarder forwards data between two given streams. 
- * If two StreamForwarder threads are used (one for each direction)
- * then one can be configured to shutdown the underlying channel/socket
- * if both threads have finished forwarding (EOF).
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: StreamForwarder.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class StreamForwarder extends Thread
-{
-	final OutputStream os;
-	final InputStream is;
-	final byte[] buffer = new byte[Channel.CHANNEL_BUFFER_SIZE];
-	final Channel c;
-	final StreamForwarder sibling;
-	final Socket s;
-	final String mode;
-
-	StreamForwarder(Channel c, StreamForwarder sibling, Socket s, InputStream is, OutputStream os, String mode)
-			throws IOException
-	{
-		this.is = is;
-		this.os = os;
-		this.mode = mode;
-		this.c = c;
-		this.sibling = sibling;
-		this.s = s;
-	}
-
-	public void run()
-	{
-		try
-		{
-			while (true)
-			{
-				int len = is.read(buffer);
-				if (len <= 0)
-					break;
-				os.write(buffer, 0, len);
-				os.flush();
-			}
-		}
-		catch (IOException ignore)
-		{
-			try
-			{
-				c.cm.closeChannel(c, "Closed due to exception in StreamForwarder (" + mode + "): "
-						+ ignore.getMessage(), true);
-			}
-			catch (IOException e)
-			{
-			}
-		}
-		finally
-		{
-			try
-			{
-				os.close();
-			}
-			catch (IOException e1)
-			{
-			}
-			try
-			{
-				is.close();
-			}
-			catch (IOException e2)
-			{
-			}
-
-			if (sibling != null)
-			{
-				while (sibling.isAlive())
-				{
-					try
-					{
-						sibling.join();
-					}
-					catch (InterruptedException e)
-					{
-					}
-				}
-
-				try
-				{
-					c.cm.closeChannel(c, "StreamForwarder (" + mode + ") is cleaning up the connection", true);
-				}
-				catch (IOException e3)
-				{
-				}
-			}
-
-			if (s != null) {
-				try
-				{
-					s.close();
-				}
-				catch (IOException e1)
-				{
-				}
-			}
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/channel/X11ServerData.java b/app/src/main/java/com/trilead/ssh2/channel/X11ServerData.java
deleted file mode 100644
index 041f9cb..0000000
--- a/app/src/main/java/com/trilead/ssh2/channel/X11ServerData.java
+++ /dev/null
@@ -1,16 +0,0 @@
-
-package com.trilead.ssh2.channel;
-
-/**
- * X11ServerData. Data regarding an x11 forwarding target.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: X11ServerData.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- * 
- */
-public class X11ServerData
-{
-	public String hostname;
-	public int port;
-	public byte[] x11_magic_cookie; /* not the remote (fake) one, the local (real) one */
-}
diff --git a/app/src/main/java/com/trilead/ssh2/compression/CompressionFactory.java b/app/src/main/java/com/trilead/ssh2/compression/CompressionFactory.java
deleted file mode 100644
index 9f8d7ef..0000000
--- a/app/src/main/java/com/trilead/ssh2/compression/CompressionFactory.java
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * ConnectBot: simple, powerful, open-source SSH client for Android
- * Copyright 2007 Kenny Root, Jeffrey Sharkey
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.trilead.ssh2.compression;
-
-import java.util.Vector;
-
-/**
- * @author Kenny Root
- *
- */
-public class CompressionFactory {
-	static class CompressorEntry
-	{
-		String type;
-		String compressorClass;
-
-		public CompressorEntry(String type, String compressorClass)
-		{
-			this.type = type;
-			this.compressorClass = compressorClass;
-		}
-	}
-
-	static Vector<CompressorEntry> compressors = new Vector<CompressorEntry>();
-
-	static
-	{
-		/* Higher Priority First */
-
-		compressors.addElement(new CompressorEntry("zlib", "com.trilead.ssh2.compression.Zlib"));
-		compressors.addElement(new CompressorEntry("zlib@openssh.com", "com.trilead.ssh2.compression.ZlibOpenSSH"));
-		compressors.addElement(new CompressorEntry("none", ""));
-	}
-
-	public static String[] getDefaultCompressorList()
-	{
-		String list[] = new String[compressors.size()];
-		for (int i = 0; i < compressors.size(); i++)
-		{
-			CompressorEntry ce = compressors.elementAt(i);
-			list[i] = new String(ce.type);
-		}
-		return list;
-	}
-
-	public static void checkCompressorList(String[] compressorCandidates)
-	{
-		for (int i = 0; i < compressorCandidates.length; i++)
-			getEntry(compressorCandidates[i]);
-	}
-
-	public static ICompressor createCompressor(String type)
-	{
-		try
-		{
-			CompressorEntry ce = getEntry(type);
-			if ("".equals(ce.compressorClass))
-				return null;
-
-			Class<?> cc = Class.forName(ce.compressorClass);
-			ICompressor cmp = (ICompressor) cc.newInstance();
-
-			return cmp;
-		}
-		catch (Exception e)
-		{
-			throw new IllegalArgumentException("Cannot instantiate " + type);
-		}
-	}
-
-	private static CompressorEntry getEntry(String type)
-	{
-		for (int i = 0; i < compressors.size(); i++)
-		{
-			CompressorEntry ce = compressors.elementAt(i);
-			if (ce.type.equals(type))
-				return ce;
-		}
-		throw new IllegalArgumentException("Unkown algorithm " + type);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/compression/ICompressor.java b/app/src/main/java/com/trilead/ssh2/compression/ICompressor.java
deleted file mode 100644
index 0b435b9..0000000
--- a/app/src/main/java/com/trilead/ssh2/compression/ICompressor.java
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * ConnectBot: simple, powerful, open-source SSH client for Android
- * Copyright 2007 Kenny Root, Jeffrey Sharkey
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.trilead.ssh2.compression;
-
-/**
- * @author Kenny Root
- *
- */
-public interface ICompressor {
-	int getBufferSize();
-
-	int compress(byte[] buf, int start, int len, byte[] output);
-
-	byte[] uncompress(byte[] buf, int start, int[] len);
-
-	boolean canCompressPreauth();
-}
diff --git a/app/src/main/java/com/trilead/ssh2/compression/Zlib.java b/app/src/main/java/com/trilead/ssh2/compression/Zlib.java
deleted file mode 100644
index c1203a3..0000000
--- a/app/src/main/java/com/trilead/ssh2/compression/Zlib.java
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * ConnectBot: simple, powerful, open-source SSH client for Android
- * Copyright 2007 Kenny Root, Jeffrey Sharkey
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.trilead.ssh2.compression;
-
-import com.jcraft.jzlib.JZlib;
-import com.jcraft.jzlib.ZStream;
-
-/**
- * @author Kenny Root
- *
- */
-public class Zlib implements ICompressor {
-	static private final int DEFAULT_BUF_SIZE = 4096;
-	static private final int LEVEL = 5;
-
-	private ZStream deflate;
-	private byte[] deflate_tmpbuf;
-
-	private ZStream inflate;
-	private byte[] inflate_tmpbuf;
-	private byte[] inflated_buf;
-
-	public Zlib() {
-		deflate = new ZStream();
-		inflate = new ZStream();
-
-		deflate.deflateInit(LEVEL);
-		inflate.inflateInit();
-
-		deflate_tmpbuf = new byte[DEFAULT_BUF_SIZE];
-		inflate_tmpbuf = new byte[DEFAULT_BUF_SIZE];
-		inflated_buf = new byte[DEFAULT_BUF_SIZE];
-	}
-
-	public boolean canCompressPreauth() {
-		return true;
-	}
-
-	public int getBufferSize() {
-		return DEFAULT_BUF_SIZE;
-	}
-
-	public int compress(byte[] buf, int start, int len, byte[] output) {
-		deflate.next_in = buf;
-		deflate.next_in_index = start;
-		deflate.avail_in = len - start;
-
-		if ((buf.length + 1024) > deflate_tmpbuf.length) {
-			deflate_tmpbuf = new byte[buf.length + 1024];
-		}
-
-		deflate.next_out = deflate_tmpbuf;
-		deflate.next_out_index = 0;
-		deflate.avail_out = output.length;
-
-		if (deflate.deflate(JZlib.Z_PARTIAL_FLUSH) != JZlib.Z_OK) {
-			System.err.println("compress: compression failure");
-		}
-
-		if (deflate.avail_in > 0) {
-			System.err.println("compress: deflated data too large");
-		}
-
-		int outputlen = output.length - deflate.avail_out;
-
-		System.arraycopy(deflate_tmpbuf, 0, output, 0, outputlen);
-
-		return outputlen;
-	}
-
-	public byte[] uncompress(byte[] buffer, int start, int[] length) {
-		int inflated_end = 0;
-
-		inflate.next_in = buffer;
-		inflate.next_in_index = start;
-		inflate.avail_in = length[0];
-
-		while (true) {
-			inflate.next_out = inflate_tmpbuf;
-			inflate.next_out_index = 0;
-			inflate.avail_out = DEFAULT_BUF_SIZE;
-			int status = inflate.inflate(JZlib.Z_PARTIAL_FLUSH);
-			switch (status) {
-			case JZlib.Z_OK:
-				if (inflated_buf.length < inflated_end + DEFAULT_BUF_SIZE
-						- inflate.avail_out) {
-					byte[] foo = new byte[inflated_end + DEFAULT_BUF_SIZE
-							- inflate.avail_out];
-					System.arraycopy(inflated_buf, 0, foo, 0, inflated_end);
-					inflated_buf = foo;
-				}
-				System.arraycopy(inflate_tmpbuf, 0, inflated_buf, inflated_end,
-						DEFAULT_BUF_SIZE - inflate.avail_out);
-				inflated_end += (DEFAULT_BUF_SIZE - inflate.avail_out);
-				length[0] = inflated_end;
-				break;
-			case JZlib.Z_BUF_ERROR:
-				if (inflated_end > buffer.length - start) {
-					byte[] foo = new byte[inflated_end + start];
-					System.arraycopy(buffer, 0, foo, 0, start);
-					System.arraycopy(inflated_buf, 0, foo, start, inflated_end);
-					buffer = foo;
-				} else {
-					System.arraycopy(inflated_buf, 0, buffer, start,
-							inflated_end);
-				}
-				length[0] = inflated_end;
-				return buffer;
-			default:
-				System.err.println("uncompress: inflate returnd " + status);
-				return null;
-			}
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/compression/ZlibOpenSSH.java b/app/src/main/java/com/trilead/ssh2/compression/ZlibOpenSSH.java
deleted file mode 100644
index 266fff9..0000000
--- a/app/src/main/java/com/trilead/ssh2/compression/ZlibOpenSSH.java
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * ConnectBot: simple, powerful, open-source SSH client for Android
- * Copyright 2007 Kenny Root, Jeffrey Sharkey
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.trilead.ssh2.compression;
-
-/**
- * Defines how zlib@openssh.org compression works.
- * See 
- * http://www.openssh.org/txt/draft-miller-secsh-compression-delayed-00.txt
- * compression is disabled until userauth has occurred.
- *
- * @author Matt Johnston
- *
- */
-public class ZlibOpenSSH extends Zlib {
-
-	public boolean canCompressPreauth() {
-		return false;
-	}
-
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/Base64.java b/app/src/main/java/com/trilead/ssh2/crypto/Base64.java
deleted file mode 100644
index 93770ac..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/Base64.java
+++ /dev/null
@@ -1,148 +0,0 @@
-
-package com.trilead.ssh2.crypto;
-
-import java.io.CharArrayWriter;
-import java.io.IOException;
-
-/**
- * Basic Base64 Support.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Base64.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class Base64
-{
-	static final char[] alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray();
-	
-	public static char[] encode(byte[] content)
-	{
-		CharArrayWriter cw = new CharArrayWriter((4 * content.length) / 3);
-
-		int idx = 0;
-					
-		int x = 0;
-
-		for (int i = 0; i < content.length; i++)
-		{
-			if (idx == 0)
-				x = (content[i] & 0xff) << 16;
-			else if (idx == 1)
-				x = x | ((content[i] & 0xff) << 8);
-			else
-				x = x | (content[i] & 0xff);
-
-			idx++;
-
-			if (idx == 3)
-			{
-				cw.write(alphabet[x >> 18]);
-				cw.write(alphabet[(x >> 12) & 0x3f]);
-				cw.write(alphabet[(x >> 6) & 0x3f]);
-				cw.write(alphabet[x & 0x3f]);
-
-				idx = 0;
-			}
-		}
-
-		if (idx == 1)
-		{
-			cw.write(alphabet[x >> 18]);
-			cw.write(alphabet[(x >> 12) & 0x3f]);
-			cw.write('=');
-			cw.write('=');
-		}
-
-		if (idx == 2)
-		{
-			cw.write(alphabet[x >> 18]);
-			cw.write(alphabet[(x >> 12) & 0x3f]);
-			cw.write(alphabet[(x >> 6) & 0x3f]);
-			cw.write('=');
-		}
-
-		return cw.toCharArray();
-	}
-
-	public static byte[] decode(char[] message) throws IOException
-	{
-		byte buff[] = new byte[4];
-		byte dest[] = new byte[message.length];
-
-		int bpos = 0;
-		int destpos = 0;
-
-		for (int i = 0; i < message.length; i++)
-		{
-			int c = message[i];
-
-			if ((c == '\n') || (c == '\r') || (c == ' ') || (c == '\t'))
-				continue;
-
-			if ((c >= 'A') && (c <= 'Z'))
-			{
-				buff[bpos++] = (byte) (c - 'A');
-			}
-			else if ((c >= 'a') && (c <= 'z'))
-			{
-				buff[bpos++] = (byte) ((c - 'a') + 26);
-			}
-			else if ((c >= '0') && (c <= '9'))
-			{
-				buff[bpos++] = (byte) ((c - '0') + 52);
-			}
-			else if (c == '+')
-			{
-				buff[bpos++] = 62;
-			}
-			else if (c == '/')
-			{
-				buff[bpos++] = 63;
-			}
-			else if (c == '=')
-			{
-				buff[bpos++] = 64;
-			}
-			else
-			{
-				throw new IOException("Illegal char in base64 code.");
-			}
-
-			if (bpos == 4)
-			{
-				bpos = 0;
-
-				if (buff[0] == 64)
-					break;
-
-				if (buff[1] == 64)
-					throw new IOException("Unexpected '=' in base64 code.");
-
-				if (buff[2] == 64)
-				{
-					int v = (((buff[0] & 0x3f) << 6) | ((buff[1] & 0x3f)));
-					dest[destpos++] = (byte) (v >> 4);
-					break;
-				}
-				else if (buff[3] == 64)
-				{
-					int v = (((buff[0] & 0x3f) << 12) | ((buff[1] & 0x3f) << 6) | ((buff[2] & 0x3f)));
-					dest[destpos++] = (byte) (v >> 10);
-					dest[destpos++] = (byte) (v >> 2);
-					break;
-				}
-				else
-				{
-					int v = (((buff[0] & 0x3f) << 18) | ((buff[1] & 0x3f) << 12) | ((buff[2] & 0x3f) << 6) | ((buff[3] & 0x3f)));
-					dest[destpos++] = (byte) (v >> 16);
-					dest[destpos++] = (byte) (v >> 8);
-					dest[destpos++] = (byte) (v);
-				}
-			}
-		}
-
-		byte[] res = new byte[destpos];
-		System.arraycopy(dest, 0, res, 0, destpos);
-
-		return res;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/CryptoWishList.java b/app/src/main/java/com/trilead/ssh2/crypto/CryptoWishList.java
deleted file mode 100644
index 86959e7..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/CryptoWishList.java
+++ /dev/null
@@ -1,26 +0,0 @@
-
-package com.trilead.ssh2.crypto;
-
-import com.trilead.ssh2.compression.CompressionFactory;
-import com.trilead.ssh2.crypto.cipher.BlockCipherFactory;
-import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.transport.KexManager;
-
-
-/**
- * CryptoWishList.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CryptoWishList.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class CryptoWishList
-{
-	public String[] kexAlgorithms = KexManager.getDefaultKexAlgorithmList();
-	public String[] serverHostKeyAlgorithms = KexManager.getDefaultServerHostkeyAlgorithmList();
-	public String[] c2s_enc_algos = BlockCipherFactory.getDefaultCipherList();
-	public String[] s2c_enc_algos = BlockCipherFactory.getDefaultCipherList();
-	public String[] c2s_mac_algos = MAC.getMacList();
-	public String[] s2c_mac_algos = MAC.getMacList();
-	public String[] c2s_comp_algos = CompressionFactory.getDefaultCompressorList();
-	public String[] s2c_comp_algos = CompressionFactory.getDefaultCompressorList();
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/KeyMaterial.java b/app/src/main/java/com/trilead/ssh2/crypto/KeyMaterial.java
deleted file mode 100644
index 1dbd6c7..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/KeyMaterial.java
+++ /dev/null
@@ -1,91 +0,0 @@
-
-package com.trilead.ssh2.crypto;
-
-
-import java.math.BigInteger;
-
-import com.trilead.ssh2.crypto.digest.HashForSSH2Types;
-
-/**
- * Establishes key material for iv/key/mac (both directions).
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KeyMaterial.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class KeyMaterial
-{
-	public byte[] initial_iv_client_to_server;
-	public byte[] initial_iv_server_to_client;
-	public byte[] enc_key_client_to_server;
-	public byte[] enc_key_server_to_client;
-	public byte[] integrity_key_client_to_server;
-	public byte[] integrity_key_server_to_client;
-
-	private static byte[] calculateKey(HashForSSH2Types sh, BigInteger K, byte[] H, byte type, byte[] SessionID,
-			int keyLength)
-	{
-		byte[] res = new byte[keyLength];
-
-		int dglen = sh.getDigestLength();
-		int numRounds = (keyLength + dglen - 1) / dglen;
-
-		byte[][] tmp = new byte[numRounds][];
-
-		sh.reset();
-		sh.updateBigInt(K);
-		sh.updateBytes(H);
-		sh.updateByte(type);
-		sh.updateBytes(SessionID);
-
-		tmp[0] = sh.getDigest();
-
-		int off = 0;
-		int produced = Math.min(dglen, keyLength);
-
-		System.arraycopy(tmp[0], 0, res, off, produced);
-
-		keyLength -= produced;
-		off += produced;
-
-		for (int i = 1; i < numRounds; i++)
-		{
-			sh.updateBigInt(K);
-			sh.updateBytes(H);
-
-			for (int j = 0; j < i; j++)
-				sh.updateBytes(tmp[j]);
-
-			tmp[i] = sh.getDigest();
-
-			produced = Math.min(dglen, keyLength);
-			System.arraycopy(tmp[i], 0, res, off, produced);
-			keyLength -= produced;
-			off += produced;
-		}
-
-		return res;
-	}
-
-	public static KeyMaterial create(String hashAlgo, byte[] H, BigInteger K, byte[] SessionID, int keyLengthCS,
-			int blockSizeCS, int macLengthCS, int keyLengthSC, int blockSizeSC, int macLengthSC)
-			throws IllegalArgumentException
-	{
-		KeyMaterial km = new KeyMaterial();
-
-		HashForSSH2Types sh = new HashForSSH2Types(hashAlgo);
-
-		km.initial_iv_client_to_server = calculateKey(sh, K, H, (byte) 'A', SessionID, blockSizeCS);
-
-		km.initial_iv_server_to_client = calculateKey(sh, K, H, (byte) 'B', SessionID, blockSizeSC);
-
-		km.enc_key_client_to_server = calculateKey(sh, K, H, (byte) 'C', SessionID, keyLengthCS);
-
-		km.enc_key_server_to_client = calculateKey(sh, K, H, (byte) 'D', SessionID, keyLengthSC);
-
-		km.integrity_key_client_to_server = calculateKey(sh, K, H, (byte) 'E', SessionID, macLengthCS);
-
-		km.integrity_key_server_to_client = calculateKey(sh, K, H, (byte) 'F', SessionID, macLengthSC);
-
-		return km;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/PEMDecoder.java b/app/src/main/java/com/trilead/ssh2/crypto/PEMDecoder.java
deleted file mode 100644
index 5c0c2fd..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/PEMDecoder.java
+++ /dev/null
@@ -1,494 +0,0 @@
-
-package com.trilead.ssh2.crypto;
-
-import java.io.BufferedReader;
-import java.io.CharArrayReader;
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.DigestException;
-import java.security.KeyFactory;
-import java.security.KeyPair;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-import java.security.PrivateKey;
-import java.security.PublicKey;
-import java.security.spec.DSAPrivateKeySpec;
-import java.security.spec.DSAPublicKeySpec;
-import java.security.spec.ECParameterSpec;
-import java.security.spec.ECPoint;
-import java.security.spec.ECPrivateKeySpec;
-import java.security.spec.ECPublicKeySpec;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.KeySpec;
-import java.security.spec.RSAPrivateCrtKeySpec;
-import java.security.spec.RSAPrivateKeySpec;
-import java.security.spec.RSAPublicKeySpec;
-
-import com.trilead.ssh2.crypto.cipher.AES;
-import com.trilead.ssh2.crypto.cipher.BlockCipher;
-import com.trilead.ssh2.crypto.cipher.CBCMode;
-import com.trilead.ssh2.crypto.cipher.DES;
-import com.trilead.ssh2.crypto.cipher.DESede;
-import com.trilead.ssh2.signature.ECDSASHA2Verify;
-
-/**
- * PEM Support.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PEMDecoder.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class PEMDecoder
-{
-	public static final int PEM_RSA_PRIVATE_KEY = 1;
-	public static final int PEM_DSA_PRIVATE_KEY = 2;
-	public static final int PEM_EC_PRIVATE_KEY = 3;
-
-	private static final int hexToInt(char c)
-	{
-		if ((c >= 'a') && (c <= 'f'))
-		{
-			return (c - 'a') + 10;
-		}
-
-		if ((c >= 'A') && (c <= 'F'))
-		{
-			return (c - 'A') + 10;
-		}
-
-		if ((c >= '0') && (c <= '9'))
-		{
-			return (c - '0');
-		}
-
-		throw new IllegalArgumentException("Need hex char");
-	}
-
-	private static byte[] hexToByteArray(String hex)
-	{
-		if (hex == null)
-			throw new IllegalArgumentException("null argument");
-
-		if ((hex.length() % 2) != 0)
-			throw new IllegalArgumentException("Uneven string length in hex encoding.");
-
-		byte decoded[] = new byte[hex.length() / 2];
-
-		for (int i = 0; i < decoded.length; i++)
-		{
-			int hi = hexToInt(hex.charAt(i * 2));
-			int lo = hexToInt(hex.charAt((i * 2) + 1));
-
-			decoded[i] = (byte) (hi * 16 + lo);
-		}
-
-		return decoded;
-	}
-
-	private static byte[] generateKeyFromPasswordSaltWithMD5(byte[] password, byte[] salt, int keyLen)
-			throws IOException
-	{
-		if (salt.length < 8)
-			throw new IllegalArgumentException("Salt needs to be at least 8 bytes for key generation.");
-
-		MessageDigest md5;
-		try {
-			md5 = MessageDigest.getInstance("MD5");
-		} catch (NoSuchAlgorithmException e) {
-			throw new IllegalArgumentException("VM does not support MD5", e);
-		}
-
-		byte[] key = new byte[keyLen];
-		byte[] tmp = new byte[md5.getDigestLength()];
-
-		while (true)
-		{
-			md5.update(password, 0, password.length);
-			md5.update(salt, 0, 8); // ARGH we only use the first 8 bytes of the
-			// salt in this step.
-			// This took me two hours until I got AES-xxx running.
-
-			int copy = (keyLen < tmp.length) ? keyLen : tmp.length;
-
-			try {
-				md5.digest(tmp, 0, tmp.length);
-			} catch (DigestException e) {
-				IOException ex = new IOException("could not digest password");
-				ex.initCause(e);
-				throw ex;
-			}
-
-			System.arraycopy(tmp, 0, key, key.length - keyLen, copy);
-
-			keyLen -= copy;
-
-			if (keyLen == 0)
-				return key;
-
-			md5.update(tmp, 0, tmp.length);
-		}
-	}
-
-	private static byte[] removePadding(byte[] buff, int blockSize) throws IOException
-	{
-		/* Removes RFC 1423/PKCS #7 padding */
-
-		int rfc_1423_padding = buff[buff.length - 1] & 0xff;
-
-		if ((rfc_1423_padding < 1) || (rfc_1423_padding > blockSize))
-			throw new IOException("Decrypted PEM has wrong padding, did you specify the correct password?");
-
-		for (int i = 2; i <= rfc_1423_padding; i++)
-		{
-			if (buff[buff.length - i] != rfc_1423_padding)
-				throw new IOException("Decrypted PEM has wrong padding, did you specify the correct password?");
-		}
-
-		byte[] tmp = new byte[buff.length - rfc_1423_padding];
-		System.arraycopy(buff, 0, tmp, 0, buff.length - rfc_1423_padding);
-		return tmp;
-	}
-
-	public static final PEMStructure parsePEM(char[] pem) throws IOException
-	{
-		PEMStructure ps = new PEMStructure();
-
-		String line = null;
-
-		BufferedReader br = new BufferedReader(new CharArrayReader(pem));
-
-		String endLine = null;
-
-		while (true)
-		{
-			line = br.readLine();
-
-			if (line == null)
-				throw new IOException("Invalid PEM structure, '-----BEGIN...' missing");
-
-			line = line.trim();
-
-			if (line.startsWith("-----BEGIN DSA PRIVATE KEY-----"))
-			{
-				endLine = "-----END DSA PRIVATE KEY-----";
-				ps.pemType = PEM_DSA_PRIVATE_KEY;
-				break;
-			}
-
-			if (line.startsWith("-----BEGIN RSA PRIVATE KEY-----"))
-			{
-				endLine = "-----END RSA PRIVATE KEY-----";
-				ps.pemType = PEM_RSA_PRIVATE_KEY;
-				break;
-			}
-
-			if (line.startsWith("-----BEGIN EC PRIVATE KEY-----")) {
-				endLine = "-----END EC PRIVATE KEY-----";
-				ps.pemType = PEM_EC_PRIVATE_KEY;
-				break;
-			}
-		}
-
-		while (true)
-		{
-			line = br.readLine();
-
-			if (line == null)
-				throw new IOException("Invalid PEM structure, " + endLine + " missing");
-
-			line = line.trim();
-
-			int sem_idx = line.indexOf(':');
-
-			if (sem_idx == -1)
-				break;
-
-			String name = line.substring(0, sem_idx + 1);
-			String value = line.substring(sem_idx + 1);
-
-			String values[] = value.split(",");
-
-			for (int i = 0; i < values.length; i++)
-				values[i] = values[i].trim();
-
-			// Proc-Type: 4,ENCRYPTED
-			// DEK-Info: DES-EDE3-CBC,579B6BE3E5C60483
-
-			if ("Proc-Type:".equals(name))
-			{
-				ps.procType = values;
-				continue;
-			}
-
-			if ("DEK-Info:".equals(name))
-			{
-				ps.dekInfo = values;
-				continue;
-			}
-			/* Ignore line */
-		}
-
-		StringBuffer keyData = new StringBuffer();
-
-		while (true)
-		{
-			if (line == null)
-				throw new IOException("Invalid PEM structure, " + endLine + " missing");
-
-			line = line.trim();
-
-			if (line.startsWith(endLine))
-				break;
-
-			keyData.append(line);
-
-			line = br.readLine();
-		}
-
-		char[] pem_chars = new char[keyData.length()];
-		keyData.getChars(0, pem_chars.length, pem_chars, 0);
-
-		ps.data = Base64.decode(pem_chars);
-
-		if (ps.data.length == 0)
-			throw new IOException("Invalid PEM structure, no data available");
-
-		return ps;
-	}
-
-	private static final void decryptPEM(PEMStructure ps, byte[] pw) throws IOException
-	{
-		if (ps.dekInfo == null)
-			throw new IOException("Broken PEM, no mode and salt given, but encryption enabled");
-
-		if (ps.dekInfo.length != 2)
-			throw new IOException("Broken PEM, DEK-Info is incomplete!");
-
-		String algo = ps.dekInfo[0];
-		byte[] salt = hexToByteArray(ps.dekInfo[1]);
-
-		BlockCipher bc = null;
-
-		if (algo.equals("DES-EDE3-CBC"))
-		{
-			DESede des3 = new DESede();
-			des3.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 24));
-			bc = new CBCMode(des3, salt, false);
-		}
-		else if (algo.equals("DES-CBC"))
-		{
-			DES des = new DES();
-			des.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 8));
-			bc = new CBCMode(des, salt, false);
-		}
-		else if (algo.equals("AES-128-CBC"))
-		{
-			AES aes = new AES();
-			aes.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 16));
-			bc = new CBCMode(aes, salt, false);
-		}
-		else if (algo.equals("AES-192-CBC"))
-		{
-			AES aes = new AES();
-			aes.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 24));
-			bc = new CBCMode(aes, salt, false);
-		}
-		else if (algo.equals("AES-256-CBC"))
-		{
-			AES aes = new AES();
-			aes.init(false, generateKeyFromPasswordSaltWithMD5(pw, salt, 32));
-			bc = new CBCMode(aes, salt, false);
-		}
-		else
-		{
-			throw new IOException("Cannot decrypt PEM structure, unknown cipher " + algo);
-		}
-
-		if ((ps.data.length % bc.getBlockSize()) != 0)
-			throw new IOException("Invalid PEM structure, size of encrypted block is not a multiple of "
-					+ bc.getBlockSize());
-
-		/* Now decrypt the content */
-
-		byte[] dz = new byte[ps.data.length];
-
-		for (int i = 0; i < ps.data.length / bc.getBlockSize(); i++)
-		{
-			bc.transformBlock(ps.data, i * bc.getBlockSize(), dz, i * bc.getBlockSize());
-		}
-
-		/* Now check and remove RFC 1423/PKCS #7 padding */
-
-		dz = removePadding(dz, bc.getBlockSize());
-
-		ps.data = dz;
-		ps.dekInfo = null;
-		ps.procType = null;
-	}
-
-	public static final boolean isPEMEncrypted(PEMStructure ps) throws IOException
-	{
-		if (ps.procType == null)
-			return false;
-
-		if (ps.procType.length != 2)
-			throw new IOException("Unknown Proc-Type field.");
-
-		if ("4".equals(ps.procType[0]) == false)
-			throw new IOException("Unknown Proc-Type field (" + ps.procType[0] + ")");
-
-		if ("ENCRYPTED".equals(ps.procType[1]))
-			return true;
-
-		return false;
-	}
-
-	public static KeyPair decode(char[] pem, String password) throws IOException
-	{
-		PEMStructure ps = parsePEM(pem);
-		return decode(ps, password);
-	}
-
-	public static KeyPair decode(PEMStructure ps, String password) throws IOException
-	{
-		if (isPEMEncrypted(ps))
-		{
-			if (password == null)
-				throw new IOException("PEM is encrypted, but no password was specified");
-
-			decryptPEM(ps, password.getBytes("ISO-8859-1"));
-		}
-
-		if (ps.pemType == PEM_DSA_PRIVATE_KEY)
-		{
-			SimpleDERReader dr = new SimpleDERReader(ps.data);
-
-			byte[] seq = dr.readSequenceAsByteArray();
-
-			if (dr.available() != 0)
-				throw new IOException("Padding in DSA PRIVATE KEY DER stream.");
-
-			dr.resetInput(seq);
-
-			BigInteger version = dr.readInt();
-
-			if (version.compareTo(BigInteger.ZERO) != 0)
-				throw new IOException("Wrong version (" + version + ") in DSA PRIVATE KEY DER stream.");
-
-			BigInteger p = dr.readInt();
-			BigInteger q = dr.readInt();
-			BigInteger g = dr.readInt();
-			BigInteger y = dr.readInt();
-			BigInteger x = dr.readInt();
-
-			if (dr.available() != 0)
-				throw new IOException("Padding in DSA PRIVATE KEY DER stream.");
-
-			DSAPrivateKeySpec privSpec = new DSAPrivateKeySpec(x, p, q, g);
-			DSAPublicKeySpec pubSpec = new DSAPublicKeySpec(y, p, q, g);
-
-			return generateKeyPair("DSA", privSpec, pubSpec);
-		}
-
-		if (ps.pemType == PEM_RSA_PRIVATE_KEY)
-		{
-			SimpleDERReader dr = new SimpleDERReader(ps.data);
-
-			byte[] seq = dr.readSequenceAsByteArray();
-
-			if (dr.available() != 0)
-				throw new IOException("Padding in RSA PRIVATE KEY DER stream.");
-
-			dr.resetInput(seq);
-
-			BigInteger version = dr.readInt();
-
-			if ((version.compareTo(BigInteger.ZERO) != 0) && (version.compareTo(BigInteger.ONE) != 0))
-				throw new IOException("Wrong version (" + version + ") in RSA PRIVATE KEY DER stream.");
-
-			BigInteger n = dr.readInt();
-			BigInteger e = dr.readInt();
-			BigInteger d = dr.readInt();
-			// TODO: is this right?
-			BigInteger primeP = dr.readInt();
-			BigInteger primeQ = dr.readInt();
-			BigInteger expP = dr.readInt();
-			BigInteger expQ = dr.readInt();
-			BigInteger coeff = dr.readInt();
-
-			RSAPrivateKeySpec privSpec = new RSAPrivateCrtKeySpec(n, e, d, primeP, primeQ, expP, expQ, coeff);
-			RSAPublicKeySpec pubSpec = new RSAPublicKeySpec(n, e);
-
-			return generateKeyPair("RSA", privSpec, pubSpec);
-		}
-
-		if (ps.pemType == PEM_EC_PRIVATE_KEY) {
-			SimpleDERReader dr = new SimpleDERReader(ps.data);
-
-			byte[] seq = dr.readSequenceAsByteArray();
-
-			if (dr.available() != 0)
-				throw new IOException("Padding in EC PRIVATE KEY DER stream.");
-
-			dr.resetInput(seq);
-
-			BigInteger version = dr.readInt();
-
-			if ((version.compareTo(BigInteger.ONE) != 0))
-				throw new IOException("Wrong version (" + version + ") in EC PRIVATE KEY DER stream.");
-
-			byte[] privateBytes = dr.readOctetString();
-
-			String curveOid = null;
-			byte[] publicBytes = null;
-			while (dr.available() > 0) {
-				int type = dr.readConstructedType();
-				SimpleDERReader cr = dr.readConstructed();
-				switch (type) {
-				case 0:
-					curveOid = cr.readOid();
-					break;
-				case 1:
-					publicBytes = cr.readOctetString();
-					break;
-				}
-			}
-
-			ECParameterSpec params = ECDSASHA2Verify.getCurveForOID(curveOid);
-			if (params == null)
-				throw new IOException("invalid OID");
-
-			BigInteger s = new BigInteger(privateBytes);
-			byte[] publicBytesSlice = new byte[publicBytes.length - 1];
-			System.arraycopy(publicBytes, 1, publicBytesSlice, 0, publicBytesSlice.length);
-			ECPoint w = ECDSASHA2Verify.decodeECPoint(publicBytesSlice, params.getCurve());
-
-			ECPrivateKeySpec privSpec = new ECPrivateKeySpec(s, params);
-			ECPublicKeySpec pubSpec = new ECPublicKeySpec(w, params);
-
-			return generateKeyPair("EC", privSpec, pubSpec);
-		}
-
-		throw new IOException("PEM problem: it is of unknown type");
-	}
-
-	/**
-	 * Generate a {@code KeyPair} given an {@code algorithm} and {@code KeySpec}.
-	 */
-	private static KeyPair generateKeyPair(String algorithm, KeySpec privSpec, KeySpec pubSpec)
-			throws IOException {
-		try {
-			final KeyFactory kf = KeyFactory.getInstance(algorithm);
-			final PublicKey pubKey = kf.generatePublic(pubSpec);
-			final PrivateKey privKey = kf.generatePrivate(privSpec);
-			return new KeyPair(pubKey, privKey);
-		} catch (NoSuchAlgorithmException ex) {
-			IOException ioex = new IOException();
-			ioex.initCause(ex);
-			throw ioex;
-		} catch (InvalidKeySpecException ex) {
-			IOException ioex = new IOException("invalid keyspec");
-			ioex.initCause(ex);
-			throw ioex;
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/PEMStructure.java b/app/src/main/java/com/trilead/ssh2/crypto/PEMStructure.java
deleted file mode 100644
index 83fb799..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/PEMStructure.java
+++ /dev/null
@@ -1,17 +0,0 @@
-
-package com.trilead.ssh2.crypto;
-
-/**
- * Parsed PEM structure.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PEMStructure.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-
-public class PEMStructure
-{
-	public int pemType;
-	String dekInfo[];
-	String procType[];
-	public byte[] data;
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/SimpleDERReader.java b/app/src/main/java/com/trilead/ssh2/crypto/SimpleDERReader.java
deleted file mode 100644
index ff8112a..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/SimpleDERReader.java
+++ /dev/null
@@ -1,229 +0,0 @@
-package com.trilead.ssh2.crypto;
-
-import java.io.IOException;
-
-import java.math.BigInteger;
-
-/**
- * SimpleDERReader.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: SimpleDERReader.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class SimpleDERReader
-{
-	private static final int CONSTRUCTED = 0x20;
-
-	byte[] buffer;
-	int pos;
-	int count;
-
-	public SimpleDERReader(byte[] b)
-	{
-		resetInput(b);
-	}
-	
-	public SimpleDERReader(byte[] b, int off, int len)
-	{
-		resetInput(b, off, len);
-	}
-
-	public void resetInput(byte[] b)
-	{
-		resetInput(b, 0, b.length);
-	}
-	
-	public void resetInput(byte[] b, int off, int len)
-	{
-		buffer = b;
-		pos = off;
-		count = len;
-	}
-
-	private byte readByte() throws IOException
-	{
-		if (count <= 0)
-			throw new IOException("DER byte array: out of data");
-		count--;
-		return buffer[pos++];
-	}
-
-	private byte[] readBytes(int len) throws IOException
-	{
-		if (len > count)
-			throw new IOException("DER byte array: out of data");
-
-		byte[] b = new byte[len];
-
-		System.arraycopy(buffer, pos, b, 0, len);
-
-		pos += len;
-		count -= len;
-
-		return b;
-	}
-
-	public int available()
-	{
-		return count;
-	}
-
-	private int readLength() throws IOException
-	{
-		int len = readByte() & 0xff;
-
-		if ((len & 0x80) == 0)
-			return len;
-
-		int remain = len & 0x7F;
-
-		if (remain == 0)
-			return -1;
-
-		len = 0;
-		
-		while (remain > 0)
-		{
-			len = len << 8;
-			len = len | (readByte() & 0xff);
-			remain--;
-		}
-
-		return len;
-	}
-
-	public int ignoreNextObject() throws IOException
-	{
-		int type = readByte() & 0xff;
-
-		int len = readLength();
-
-		if ((len < 0) || len > available())
-			throw new IOException("Illegal len in DER object (" + len  + ")");
-
-		readBytes(len);
-		
-		return type;
-	}
-	
-	public BigInteger readInt() throws IOException
-	{
-		int type = readByte() & 0xff;
-		
-		if (type != 0x02)
-			throw new IOException("Expected DER Integer, but found type " + type);
-		
-		int len = readLength();
-
-		if ((len < 0) || len > available())
-			throw new IOException("Illegal len in DER object (" + len  + ")");
-
-		byte[] b = readBytes(len);
-		
-		BigInteger bi = new BigInteger(b);
-		
-		return bi;
-	}
-
-	public int readConstructedType() throws IOException {
-		int type = readByte() & 0xff;
-
-		if ((type & CONSTRUCTED) != CONSTRUCTED)
-			throw new IOException("Expected constructed type, but was " + type);
-
-		return type & 0x1f;
-	}
-
-	public SimpleDERReader readConstructed() throws IOException
-	{
-		int len = readLength();
-
-		if ((len < 0) || len > available())
-			throw new IOException("Illegal len in DER object (" + len  + ")");
-
-		SimpleDERReader cr = new SimpleDERReader(buffer, pos, len);
-
-		pos += len;
-		count -= len;
-
-		return cr;
-	}
-
-	public byte[] readSequenceAsByteArray() throws IOException
-	{
-		int type = readByte() & 0xff;
-		
-		if (type != 0x30)
-			throw new IOException("Expected DER Sequence, but found type " + type);
-		
-		int len = readLength();
-
-		if ((len < 0) || len > available())
-			throw new IOException("Illegal len in DER object (" + len  + ")");
-
-		byte[] b = readBytes(len);
-
-		return b;
-	}
-
-	public String readOid() throws IOException
-	{
-		int type = readByte() & 0xff;
-
-		if (type != 0x06)
-		   throw new IOException("Expected DER OID, but found type " + type);
-
-		int len = readLength();
-
-		if ((len < 1) || len > available())
-			throw new IOException("Illegal len in DER object (" + len  + ")");
-
-		byte[] b = readBytes(len);
-
-		long value = 0;
-
-		StringBuilder sb = new StringBuilder(64);
-		switch(b[0] / 40) {
-		case 0:
-			sb.append('0');
-			break;
-		case 1:
-			sb.append('1');
-			b[0] -= 40;
-			break;
-		default:
-			sb.append('2');
-			b[0] -= 80;
-			break;
-		}
-
-		for (int i = 0; i < len; i++) {
-			value = (value << 7) + (b[i] & 0x7F);
-			if ((b[i] & 0x80) == 0) {
-				sb.append('.');
-				sb.append(value);
-				value = 0;
-			}
-		}
-
-		return sb.toString();
-	}
-
-	public byte[] readOctetString() throws IOException
-	{
-		int type = readByte() & 0xff;
-
-		if (type != 0x04 && type != 0x03)
-			throw new IOException("Expected DER Octetstring, but found type " + type);
-		
-		int len = readLength();
-
-		if ((len < 0) || len > available())
-			throw new IOException("Illegal len in DER object (" + len  + ")");
-
-		byte[] b = readBytes(len);
-
-		return b;
-	}
-
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/AES.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/AES.java
deleted file mode 100644
index e89e4a6..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/AES.java
+++ /dev/null
@@ -1,698 +0,0 @@
-
-package com.trilead.ssh2.crypto.cipher;
-
-/*
- This file was shamelessly taken from the Bouncy Castle Crypto package.
- Their licence file states the following:
-
- Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle
- (http://www.bouncycastle.org)
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE. 
- */
-
-/**
- * An implementation of the AES (Rijndael), from FIPS-197.
- * <p>
- * For further details see: <a
- * href="http://csrc.nist.gov/encryption/aes/">http://csrc.nist.gov/encryption/aes/
- * </a>.
- * 
- * This implementation is based on optimizations from Dr. Brian Gladman's paper
- * and C code at <a
- * href="http://fp.gladman.plus.com/cryptography_technology/rijndael/">http://fp.gladman.plus.com/cryptography_technology/rijndael/
- * </a>
- * 
- * There are three levels of tradeoff of speed vs memory Because java has no
- * preprocessor, they are written as three separate classes from which to choose
- * 
- * The fastest uses 8Kbytes of static tables to precompute round calculations, 4
- * 256 word tables for encryption and 4 for decryption.
- * 
- * The middle performance version uses only one 256 word table for each, for a
- * total of 2Kbytes, adding 12 rotate operations per round to compute the values
- * contained in the other tables from the contents of the first
- * 
- * The slowest version uses no static tables at all and computes the values in
- * each round
- * <p>
- * This file contains the fast version with 8Kbytes of static tables for round
- * precomputation
- * 
- * @author See comments in the source file
- * @version $Id: AES.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class AES implements BlockCipher
-{
-	// The S box
-	private static final byte[] S = { (byte) 99, (byte) 124, (byte) 119, (byte) 123, (byte) 242, (byte) 107,
-			(byte) 111, (byte) 197, (byte) 48, (byte) 1, (byte) 103, (byte) 43, (byte) 254, (byte) 215, (byte) 171,
-			(byte) 118, (byte) 202, (byte) 130, (byte) 201, (byte) 125, (byte) 250, (byte) 89, (byte) 71, (byte) 240,
-			(byte) 173, (byte) 212, (byte) 162, (byte) 175, (byte) 156, (byte) 164, (byte) 114, (byte) 192, (byte) 183,
-			(byte) 253, (byte) 147, (byte) 38, (byte) 54, (byte) 63, (byte) 247, (byte) 204, (byte) 52, (byte) 165,
-			(byte) 229, (byte) 241, (byte) 113, (byte) 216, (byte) 49, (byte) 21, (byte) 4, (byte) 199, (byte) 35,
-			(byte) 195, (byte) 24, (byte) 150, (byte) 5, (byte) 154, (byte) 7, (byte) 18, (byte) 128, (byte) 226,
-			(byte) 235, (byte) 39, (byte) 178, (byte) 117, (byte) 9, (byte) 131, (byte) 44, (byte) 26, (byte) 27,
-			(byte) 110, (byte) 90, (byte) 160, (byte) 82, (byte) 59, (byte) 214, (byte) 179, (byte) 41, (byte) 227,
-			(byte) 47, (byte) 132, (byte) 83, (byte) 209, (byte) 0, (byte) 237, (byte) 32, (byte) 252, (byte) 177,
-			(byte) 91, (byte) 106, (byte) 203, (byte) 190, (byte) 57, (byte) 74, (byte) 76, (byte) 88, (byte) 207,
-			(byte) 208, (byte) 239, (byte) 170, (byte) 251, (byte) 67, (byte) 77, (byte) 51, (byte) 133, (byte) 69,
-			(byte) 249, (byte) 2, (byte) 127, (byte) 80, (byte) 60, (byte) 159, (byte) 168, (byte) 81, (byte) 163,
-			(byte) 64, (byte) 143, (byte) 146, (byte) 157, (byte) 56, (byte) 245, (byte) 188, (byte) 182, (byte) 218,
-			(byte) 33, (byte) 16, (byte) 255, (byte) 243, (byte) 210, (byte) 205, (byte) 12, (byte) 19, (byte) 236,
-			(byte) 95, (byte) 151, (byte) 68, (byte) 23, (byte) 196, (byte) 167, (byte) 126, (byte) 61, (byte) 100,
-			(byte) 93, (byte) 25, (byte) 115, (byte) 96, (byte) 129, (byte) 79, (byte) 220, (byte) 34, (byte) 42,
-			(byte) 144, (byte) 136, (byte) 70, (byte) 238, (byte) 184, (byte) 20, (byte) 222, (byte) 94, (byte) 11,
-			(byte) 219, (byte) 224, (byte) 50, (byte) 58, (byte) 10, (byte) 73, (byte) 6, (byte) 36, (byte) 92,
-			(byte) 194, (byte) 211, (byte) 172, (byte) 98, (byte) 145, (byte) 149, (byte) 228, (byte) 121, (byte) 231,
-			(byte) 200, (byte) 55, (byte) 109, (byte) 141, (byte) 213, (byte) 78, (byte) 169, (byte) 108, (byte) 86,
-			(byte) 244, (byte) 234, (byte) 101, (byte) 122, (byte) 174, (byte) 8, (byte) 186, (byte) 120, (byte) 37,
-			(byte) 46, (byte) 28, (byte) 166, (byte) 180, (byte) 198, (byte) 232, (byte) 221, (byte) 116, (byte) 31,
-			(byte) 75, (byte) 189, (byte) 139, (byte) 138, (byte) 112, (byte) 62, (byte) 181, (byte) 102, (byte) 72,
-			(byte) 3, (byte) 246, (byte) 14, (byte) 97, (byte) 53, (byte) 87, (byte) 185, (byte) 134, (byte) 193,
-			(byte) 29, (byte) 158, (byte) 225, (byte) 248, (byte) 152, (byte) 17, (byte) 105, (byte) 217, (byte) 142,
-			(byte) 148, (byte) 155, (byte) 30, (byte) 135, (byte) 233, (byte) 206, (byte) 85, (byte) 40, (byte) 223,
-			(byte) 140, (byte) 161, (byte) 137, (byte) 13, (byte) 191, (byte) 230, (byte) 66, (byte) 104, (byte) 65,
-			(byte) 153, (byte) 45, (byte) 15, (byte) 176, (byte) 84, (byte) 187, (byte) 22, };
-
-	// The inverse S-box
-	private static final byte[] Si = { (byte) 82, (byte) 9, (byte) 106, (byte) 213, (byte) 48, (byte) 54, (byte) 165,
-			(byte) 56, (byte) 191, (byte) 64, (byte) 163, (byte) 158, (byte) 129, (byte) 243, (byte) 215, (byte) 251,
-			(byte) 124, (byte) 227, (byte) 57, (byte) 130, (byte) 155, (byte) 47, (byte) 255, (byte) 135, (byte) 52,
-			(byte) 142, (byte) 67, (byte) 68, (byte) 196, (byte) 222, (byte) 233, (byte) 203, (byte) 84, (byte) 123,
-			(byte) 148, (byte) 50, (byte) 166, (byte) 194, (byte) 35, (byte) 61, (byte) 238, (byte) 76, (byte) 149,
-			(byte) 11, (byte) 66, (byte) 250, (byte) 195, (byte) 78, (byte) 8, (byte) 46, (byte) 161, (byte) 102,
-			(byte) 40, (byte) 217, (byte) 36, (byte) 178, (byte) 118, (byte) 91, (byte) 162, (byte) 73, (byte) 109,
-			(byte) 139, (byte) 209, (byte) 37, (byte) 114, (byte) 248, (byte) 246, (byte) 100, (byte) 134, (byte) 104,
-			(byte) 152, (byte) 22, (byte) 212, (byte) 164, (byte) 92, (byte) 204, (byte) 93, (byte) 101, (byte) 182,
-			(byte) 146, (byte) 108, (byte) 112, (byte) 72, (byte) 80, (byte) 253, (byte) 237, (byte) 185, (byte) 218,
-			(byte) 94, (byte) 21, (byte) 70, (byte) 87, (byte) 167, (byte) 141, (byte) 157, (byte) 132, (byte) 144,
-			(byte) 216, (byte) 171, (byte) 0, (byte) 140, (byte) 188, (byte) 211, (byte) 10, (byte) 247, (byte) 228,
-			(byte) 88, (byte) 5, (byte) 184, (byte) 179, (byte) 69, (byte) 6, (byte) 208, (byte) 44, (byte) 30,
-			(byte) 143, (byte) 202, (byte) 63, (byte) 15, (byte) 2, (byte) 193, (byte) 175, (byte) 189, (byte) 3,
-			(byte) 1, (byte) 19, (byte) 138, (byte) 107, (byte) 58, (byte) 145, (byte) 17, (byte) 65, (byte) 79,
-			(byte) 103, (byte) 220, (byte) 234, (byte) 151, (byte) 242, (byte) 207, (byte) 206, (byte) 240, (byte) 180,
-			(byte) 230, (byte) 115, (byte) 150, (byte) 172, (byte) 116, (byte) 34, (byte) 231, (byte) 173, (byte) 53,
-			(byte) 133, (byte) 226, (byte) 249, (byte) 55, (byte) 232, (byte) 28, (byte) 117, (byte) 223, (byte) 110,
-			(byte) 71, (byte) 241, (byte) 26, (byte) 113, (byte) 29, (byte) 41, (byte) 197, (byte) 137, (byte) 111,
-			(byte) 183, (byte) 98, (byte) 14, (byte) 170, (byte) 24, (byte) 190, (byte) 27, (byte) 252, (byte) 86,
-			(byte) 62, (byte) 75, (byte) 198, (byte) 210, (byte) 121, (byte) 32, (byte) 154, (byte) 219, (byte) 192,
-			(byte) 254, (byte) 120, (byte) 205, (byte) 90, (byte) 244, (byte) 31, (byte) 221, (byte) 168, (byte) 51,
-			(byte) 136, (byte) 7, (byte) 199, (byte) 49, (byte) 177, (byte) 18, (byte) 16, (byte) 89, (byte) 39,
-			(byte) 128, (byte) 236, (byte) 95, (byte) 96, (byte) 81, (byte) 127, (byte) 169, (byte) 25, (byte) 181,
-			(byte) 74, (byte) 13, (byte) 45, (byte) 229, (byte) 122, (byte) 159, (byte) 147, (byte) 201, (byte) 156,
-			(byte) 239, (byte) 160, (byte) 224, (byte) 59, (byte) 77, (byte) 174, (byte) 42, (byte) 245, (byte) 176,
-			(byte) 200, (byte) 235, (byte) 187, (byte) 60, (byte) 131, (byte) 83, (byte) 153, (byte) 97, (byte) 23,
-			(byte) 43, (byte) 4, (byte) 126, (byte) 186, (byte) 119, (byte) 214, (byte) 38, (byte) 225, (byte) 105,
-			(byte) 20, (byte) 99, (byte) 85, (byte) 33, (byte) 12, (byte) 125, };
-
-	// vector used in calculating key schedule (powers of x in GF(256))
-	private static final int[] rcon = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab,
-			0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91 };
-
-	// precomputation tables of calculations for rounds
-	private static final int[] T0 = { 0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6, 0x0df2f2ff, 0xbd6b6bd6,
-			0xb16f6fde, 0x54c5c591, 0x50303060, 0x03010102, 0xa96767ce, 0x7d2b2b56, 0x19fefee7, 0x62d7d7b5, 0xe6abab4d,
-			0x9a7676ec, 0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa, 0x15fafaef, 0xeb5959b2, 0xc947478e, 0x0bf0f0fb,
-			0xecadad41, 0x67d4d4b3, 0xfda2a25f, 0xeaafaf45, 0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b, 0xc2b7b775,
-			0x1cfdfde1, 0xae93933d, 0x6a26264c, 0x5a36366c, 0x413f3f7e, 0x02f7f7f5, 0x4fcccc83, 0x5c343468, 0xf4a5a551,
-			0x34e5e5d1, 0x08f1f1f9, 0x937171e2, 0x73d8d8ab, 0x53313162, 0x3f15152a, 0x0c040408, 0x52c7c795, 0x65232346,
-			0x5ec3c39d, 0x28181830, 0xa1969637, 0x0f05050a, 0xb59a9a2f, 0x0907070e, 0x36121224, 0x9b80801b, 0x3de2e2df,
-			0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea, 0x1b090912, 0x9e83831d, 0x742c2c58, 0x2e1a1a34, 0x2d1b1b36,
-			0xb26e6edc, 0xee5a5ab4, 0xfba0a05b, 0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d, 0x7b292952, 0x3ee3e3dd,
-			0x712f2f5e, 0x97848413, 0xf55353a6, 0x68d1d1b9, 0x00000000, 0x2cededc1, 0x60202040, 0x1ffcfce3, 0xc8b1b179,
-			0xed5b5bb6, 0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972, 0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85,
-			0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed, 0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511, 0xcf45458a,
-			0x10f9f9e9, 0x06020204, 0x817f7ffe, 0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b, 0xf35151a2, 0xfea3a35d,
-			0xc0404080, 0x8a8f8f05, 0xad92923f, 0xbc9d9d21, 0x48383870, 0x04f5f5f1, 0xdfbcbc63, 0xc1b6b677, 0x75dadaaf,
-			0x63212142, 0x30101020, 0x1affffe5, 0x0ef3f3fd, 0x6dd2d2bf, 0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3,
-			0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e, 0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a, 0xac6464c8,
-			0xe75d5dba, 0x2b191932, 0x957373e6, 0xa06060c0, 0x98818119, 0xd14f4f9e, 0x7fdcdca3, 0x66222244, 0x7e2a2a54,
-			0xab90903b, 0x8388880b, 0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428, 0x79dedea7, 0xe25e5ebc, 0x1d0b0b16,
-			0x76dbdbad, 0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14, 0xdb494992, 0x0a06060c, 0x6c242448, 0xe45c5cb8,
-			0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4, 0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2, 0x32e7e7d5,
-			0x43c8c88b, 0x5937376e, 0xb76d6dda, 0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949, 0xb46c6cd8, 0xfa5656ac,
-			0x07f4f4f3, 0x25eaeacf, 0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810, 0xd5baba6f, 0x887878f0, 0x6f25254a,
-			0x722e2e5c, 0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697, 0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e,
-			0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d, 0x858a8a0f, 0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc, 0xd8484890,
-			0x05030306, 0x01f6f6f7, 0x120e0e1c, 0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969, 0x91868617, 0x58c1c199,
-			0x271d1d3a, 0xb99e9e27, 0x38e1e1d9, 0x13f8f8eb, 0xb398982b, 0x33111122, 0xbb6969d2, 0x70d9d9a9, 0x898e8e07,
-			0xa7949433, 0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9, 0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5,
-			0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a, 0xdabfbf65, 0x31e6e6d7, 0xc6424284, 0xb86868d0, 0xc3414182,
-			0xb0999929, 0x772d2d5a, 0x110f0f1e, 0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c };
-
-	private static final int[] T1 = { 0x6363c6a5, 0x7c7cf884, 0x7777ee99, 0x7b7bf68d, 0xf2f2ff0d, 0x6b6bd6bd,
-			0x6f6fdeb1, 0xc5c59154, 0x30306050, 0x01010203, 0x6767cea9, 0x2b2b567d, 0xfefee719, 0xd7d7b562, 0xabab4de6,
-			0x7676ec9a, 0xcaca8f45, 0x82821f9d, 0xc9c98940, 0x7d7dfa87, 0xfafaef15, 0x5959b2eb, 0x47478ec9, 0xf0f0fb0b,
-			0xadad41ec, 0xd4d4b367, 0xa2a25ffd, 0xafaf45ea, 0x9c9c23bf, 0xa4a453f7, 0x7272e496, 0xc0c09b5b, 0xb7b775c2,
-			0xfdfde11c, 0x93933dae, 0x26264c6a, 0x36366c5a, 0x3f3f7e41, 0xf7f7f502, 0xcccc834f, 0x3434685c, 0xa5a551f4,
-			0xe5e5d134, 0xf1f1f908, 0x7171e293, 0xd8d8ab73, 0x31316253, 0x15152a3f, 0x0404080c, 0xc7c79552, 0x23234665,
-			0xc3c39d5e, 0x18183028, 0x969637a1, 0x05050a0f, 0x9a9a2fb5, 0x07070e09, 0x12122436, 0x80801b9b, 0xe2e2df3d,
-			0xebebcd26, 0x27274e69, 0xb2b27fcd, 0x7575ea9f, 0x0909121b, 0x83831d9e, 0x2c2c5874, 0x1a1a342e, 0x1b1b362d,
-			0x6e6edcb2, 0x5a5ab4ee, 0xa0a05bfb, 0x5252a4f6, 0x3b3b764d, 0xd6d6b761, 0xb3b37dce, 0x2929527b, 0xe3e3dd3e,
-			0x2f2f5e71, 0x84841397, 0x5353a6f5, 0xd1d1b968, 0x00000000, 0xededc12c, 0x20204060, 0xfcfce31f, 0xb1b179c8,
-			0x5b5bb6ed, 0x6a6ad4be, 0xcbcb8d46, 0xbebe67d9, 0x3939724b, 0x4a4a94de, 0x4c4c98d4, 0x5858b0e8, 0xcfcf854a,
-			0xd0d0bb6b, 0xefefc52a, 0xaaaa4fe5, 0xfbfbed16, 0x434386c5, 0x4d4d9ad7, 0x33336655, 0x85851194, 0x45458acf,
-			0xf9f9e910, 0x02020406, 0x7f7ffe81, 0x5050a0f0, 0x3c3c7844, 0x9f9f25ba, 0xa8a84be3, 0x5151a2f3, 0xa3a35dfe,
-			0x404080c0, 0x8f8f058a, 0x92923fad, 0x9d9d21bc, 0x38387048, 0xf5f5f104, 0xbcbc63df, 0xb6b677c1, 0xdadaaf75,
-			0x21214263, 0x10102030, 0xffffe51a, 0xf3f3fd0e, 0xd2d2bf6d, 0xcdcd814c, 0x0c0c1814, 0x13132635, 0xececc32f,
-			0x5f5fbee1, 0x979735a2, 0x444488cc, 0x17172e39, 0xc4c49357, 0xa7a755f2, 0x7e7efc82, 0x3d3d7a47, 0x6464c8ac,
-			0x5d5dbae7, 0x1919322b, 0x7373e695, 0x6060c0a0, 0x81811998, 0x4f4f9ed1, 0xdcdca37f, 0x22224466, 0x2a2a547e,
-			0x90903bab, 0x88880b83, 0x46468cca, 0xeeeec729, 0xb8b86bd3, 0x1414283c, 0xdedea779, 0x5e5ebce2, 0x0b0b161d,
-			0xdbdbad76, 0xe0e0db3b, 0x32326456, 0x3a3a744e, 0x0a0a141e, 0x494992db, 0x06060c0a, 0x2424486c, 0x5c5cb8e4,
-			0xc2c29f5d, 0xd3d3bd6e, 0xacac43ef, 0x6262c4a6, 0x919139a8, 0x959531a4, 0xe4e4d337, 0x7979f28b, 0xe7e7d532,
-			0xc8c88b43, 0x37376e59, 0x6d6ddab7, 0x8d8d018c, 0xd5d5b164, 0x4e4e9cd2, 0xa9a949e0, 0x6c6cd8b4, 0x5656acfa,
-			0xf4f4f307, 0xeaeacf25, 0x6565caaf, 0x7a7af48e, 0xaeae47e9, 0x08081018, 0xbaba6fd5, 0x7878f088, 0x25254a6f,
-			0x2e2e5c72, 0x1c1c3824, 0xa6a657f1, 0xb4b473c7, 0xc6c69751, 0xe8e8cb23, 0xdddda17c, 0x7474e89c, 0x1f1f3e21,
-			0x4b4b96dd, 0xbdbd61dc, 0x8b8b0d86, 0x8a8a0f85, 0x7070e090, 0x3e3e7c42, 0xb5b571c4, 0x6666ccaa, 0x484890d8,
-			0x03030605, 0xf6f6f701, 0x0e0e1c12, 0x6161c2a3, 0x35356a5f, 0x5757aef9, 0xb9b969d0, 0x86861791, 0xc1c19958,
-			0x1d1d3a27, 0x9e9e27b9, 0xe1e1d938, 0xf8f8eb13, 0x98982bb3, 0x11112233, 0x6969d2bb, 0xd9d9a970, 0x8e8e0789,
-			0x949433a7, 0x9b9b2db6, 0x1e1e3c22, 0x87871592, 0xe9e9c920, 0xcece8749, 0x5555aaff, 0x28285078, 0xdfdfa57a,
-			0x8c8c038f, 0xa1a159f8, 0x89890980, 0x0d0d1a17, 0xbfbf65da, 0xe6e6d731, 0x424284c6, 0x6868d0b8, 0x414182c3,
-			0x999929b0, 0x2d2d5a77, 0x0f0f1e11, 0xb0b07bcb, 0x5454a8fc, 0xbbbb6dd6, 0x16162c3a };
-
-	private static final int[] T2 = { 0x63c6a563, 0x7cf8847c, 0x77ee9977, 0x7bf68d7b, 0xf2ff0df2, 0x6bd6bd6b,
-			0x6fdeb16f, 0xc59154c5, 0x30605030, 0x01020301, 0x67cea967, 0x2b567d2b, 0xfee719fe, 0xd7b562d7, 0xab4de6ab,
-			0x76ec9a76, 0xca8f45ca, 0x821f9d82, 0xc98940c9, 0x7dfa877d, 0xfaef15fa, 0x59b2eb59, 0x478ec947, 0xf0fb0bf0,
-			0xad41ecad, 0xd4b367d4, 0xa25ffda2, 0xaf45eaaf, 0x9c23bf9c, 0xa453f7a4, 0x72e49672, 0xc09b5bc0, 0xb775c2b7,
-			0xfde11cfd, 0x933dae93, 0x264c6a26, 0x366c5a36, 0x3f7e413f, 0xf7f502f7, 0xcc834fcc, 0x34685c34, 0xa551f4a5,
-			0xe5d134e5, 0xf1f908f1, 0x71e29371, 0xd8ab73d8, 0x31625331, 0x152a3f15, 0x04080c04, 0xc79552c7, 0x23466523,
-			0xc39d5ec3, 0x18302818, 0x9637a196, 0x050a0f05, 0x9a2fb59a, 0x070e0907, 0x12243612, 0x801b9b80, 0xe2df3de2,
-			0xebcd26eb, 0x274e6927, 0xb27fcdb2, 0x75ea9f75, 0x09121b09, 0x831d9e83, 0x2c58742c, 0x1a342e1a, 0x1b362d1b,
-			0x6edcb26e, 0x5ab4ee5a, 0xa05bfba0, 0x52a4f652, 0x3b764d3b, 0xd6b761d6, 0xb37dceb3, 0x29527b29, 0xe3dd3ee3,
-			0x2f5e712f, 0x84139784, 0x53a6f553, 0xd1b968d1, 0x00000000, 0xedc12ced, 0x20406020, 0xfce31ffc, 0xb179c8b1,
-			0x5bb6ed5b, 0x6ad4be6a, 0xcb8d46cb, 0xbe67d9be, 0x39724b39, 0x4a94de4a, 0x4c98d44c, 0x58b0e858, 0xcf854acf,
-			0xd0bb6bd0, 0xefc52aef, 0xaa4fe5aa, 0xfbed16fb, 0x4386c543, 0x4d9ad74d, 0x33665533, 0x85119485, 0x458acf45,
-			0xf9e910f9, 0x02040602, 0x7ffe817f, 0x50a0f050, 0x3c78443c, 0x9f25ba9f, 0xa84be3a8, 0x51a2f351, 0xa35dfea3,
-			0x4080c040, 0x8f058a8f, 0x923fad92, 0x9d21bc9d, 0x38704838, 0xf5f104f5, 0xbc63dfbc, 0xb677c1b6, 0xdaaf75da,
-			0x21426321, 0x10203010, 0xffe51aff, 0xf3fd0ef3, 0xd2bf6dd2, 0xcd814ccd, 0x0c18140c, 0x13263513, 0xecc32fec,
-			0x5fbee15f, 0x9735a297, 0x4488cc44, 0x172e3917, 0xc49357c4, 0xa755f2a7, 0x7efc827e, 0x3d7a473d, 0x64c8ac64,
-			0x5dbae75d, 0x19322b19, 0x73e69573, 0x60c0a060, 0x81199881, 0x4f9ed14f, 0xdca37fdc, 0x22446622, 0x2a547e2a,
-			0x903bab90, 0x880b8388, 0x468cca46, 0xeec729ee, 0xb86bd3b8, 0x14283c14, 0xdea779de, 0x5ebce25e, 0x0b161d0b,
-			0xdbad76db, 0xe0db3be0, 0x32645632, 0x3a744e3a, 0x0a141e0a, 0x4992db49, 0x060c0a06, 0x24486c24, 0x5cb8e45c,
-			0xc29f5dc2, 0xd3bd6ed3, 0xac43efac, 0x62c4a662, 0x9139a891, 0x9531a495, 0xe4d337e4, 0x79f28b79, 0xe7d532e7,
-			0xc88b43c8, 0x376e5937, 0x6ddab76d, 0x8d018c8d, 0xd5b164d5, 0x4e9cd24e, 0xa949e0a9, 0x6cd8b46c, 0x56acfa56,
-			0xf4f307f4, 0xeacf25ea, 0x65caaf65, 0x7af48e7a, 0xae47e9ae, 0x08101808, 0xba6fd5ba, 0x78f08878, 0x254a6f25,
-			0x2e5c722e, 0x1c38241c, 0xa657f1a6, 0xb473c7b4, 0xc69751c6, 0xe8cb23e8, 0xdda17cdd, 0x74e89c74, 0x1f3e211f,
-			0x4b96dd4b, 0xbd61dcbd, 0x8b0d868b, 0x8a0f858a, 0x70e09070, 0x3e7c423e, 0xb571c4b5, 0x66ccaa66, 0x4890d848,
-			0x03060503, 0xf6f701f6, 0x0e1c120e, 0x61c2a361, 0x356a5f35, 0x57aef957, 0xb969d0b9, 0x86179186, 0xc19958c1,
-			0x1d3a271d, 0x9e27b99e, 0xe1d938e1, 0xf8eb13f8, 0x982bb398, 0x11223311, 0x69d2bb69, 0xd9a970d9, 0x8e07898e,
-			0x9433a794, 0x9b2db69b, 0x1e3c221e, 0x87159287, 0xe9c920e9, 0xce8749ce, 0x55aaff55, 0x28507828, 0xdfa57adf,
-			0x8c038f8c, 0xa159f8a1, 0x89098089, 0x0d1a170d, 0xbf65dabf, 0xe6d731e6, 0x4284c642, 0x68d0b868, 0x4182c341,
-			0x9929b099, 0x2d5a772d, 0x0f1e110f, 0xb07bcbb0, 0x54a8fc54, 0xbb6dd6bb, 0x162c3a16 };
-
-	private static final int[] T3 = { 0xc6a56363, 0xf8847c7c, 0xee997777, 0xf68d7b7b, 0xff0df2f2, 0xd6bd6b6b,
-			0xdeb16f6f, 0x9154c5c5, 0x60503030, 0x02030101, 0xcea96767, 0x567d2b2b, 0xe719fefe, 0xb562d7d7, 0x4de6abab,
-			0xec9a7676, 0x8f45caca, 0x1f9d8282, 0x8940c9c9, 0xfa877d7d, 0xef15fafa, 0xb2eb5959, 0x8ec94747, 0xfb0bf0f0,
-			0x41ecadad, 0xb367d4d4, 0x5ffda2a2, 0x45eaafaf, 0x23bf9c9c, 0x53f7a4a4, 0xe4967272, 0x9b5bc0c0, 0x75c2b7b7,
-			0xe11cfdfd, 0x3dae9393, 0x4c6a2626, 0x6c5a3636, 0x7e413f3f, 0xf502f7f7, 0x834fcccc, 0x685c3434, 0x51f4a5a5,
-			0xd134e5e5, 0xf908f1f1, 0xe2937171, 0xab73d8d8, 0x62533131, 0x2a3f1515, 0x080c0404, 0x9552c7c7, 0x46652323,
-			0x9d5ec3c3, 0x30281818, 0x37a19696, 0x0a0f0505, 0x2fb59a9a, 0x0e090707, 0x24361212, 0x1b9b8080, 0xdf3de2e2,
-			0xcd26ebeb, 0x4e692727, 0x7fcdb2b2, 0xea9f7575, 0x121b0909, 0x1d9e8383, 0x58742c2c, 0x342e1a1a, 0x362d1b1b,
-			0xdcb26e6e, 0xb4ee5a5a, 0x5bfba0a0, 0xa4f65252, 0x764d3b3b, 0xb761d6d6, 0x7dceb3b3, 0x527b2929, 0xdd3ee3e3,
-			0x5e712f2f, 0x13978484, 0xa6f55353, 0xb968d1d1, 0x00000000, 0xc12ceded, 0x40602020, 0xe31ffcfc, 0x79c8b1b1,
-			0xb6ed5b5b, 0xd4be6a6a, 0x8d46cbcb, 0x67d9bebe, 0x724b3939, 0x94de4a4a, 0x98d44c4c, 0xb0e85858, 0x854acfcf,
-			0xbb6bd0d0, 0xc52aefef, 0x4fe5aaaa, 0xed16fbfb, 0x86c54343, 0x9ad74d4d, 0x66553333, 0x11948585, 0x8acf4545,
-			0xe910f9f9, 0x04060202, 0xfe817f7f, 0xa0f05050, 0x78443c3c, 0x25ba9f9f, 0x4be3a8a8, 0xa2f35151, 0x5dfea3a3,
-			0x80c04040, 0x058a8f8f, 0x3fad9292, 0x21bc9d9d, 0x70483838, 0xf104f5f5, 0x63dfbcbc, 0x77c1b6b6, 0xaf75dada,
-			0x42632121, 0x20301010, 0xe51affff, 0xfd0ef3f3, 0xbf6dd2d2, 0x814ccdcd, 0x18140c0c, 0x26351313, 0xc32fecec,
-			0xbee15f5f, 0x35a29797, 0x88cc4444, 0x2e391717, 0x9357c4c4, 0x55f2a7a7, 0xfc827e7e, 0x7a473d3d, 0xc8ac6464,
-			0xbae75d5d, 0x322b1919, 0xe6957373, 0xc0a06060, 0x19988181, 0x9ed14f4f, 0xa37fdcdc, 0x44662222, 0x547e2a2a,
-			0x3bab9090, 0x0b838888, 0x8cca4646, 0xc729eeee, 0x6bd3b8b8, 0x283c1414, 0xa779dede, 0xbce25e5e, 0x161d0b0b,
-			0xad76dbdb, 0xdb3be0e0, 0x64563232, 0x744e3a3a, 0x141e0a0a, 0x92db4949, 0x0c0a0606, 0x486c2424, 0xb8e45c5c,
-			0x9f5dc2c2, 0xbd6ed3d3, 0x43efacac, 0xc4a66262, 0x39a89191, 0x31a49595, 0xd337e4e4, 0xf28b7979, 0xd532e7e7,
-			0x8b43c8c8, 0x6e593737, 0xdab76d6d, 0x018c8d8d, 0xb164d5d5, 0x9cd24e4e, 0x49e0a9a9, 0xd8b46c6c, 0xacfa5656,
-			0xf307f4f4, 0xcf25eaea, 0xcaaf6565, 0xf48e7a7a, 0x47e9aeae, 0x10180808, 0x6fd5baba, 0xf0887878, 0x4a6f2525,
-			0x5c722e2e, 0x38241c1c, 0x57f1a6a6, 0x73c7b4b4, 0x9751c6c6, 0xcb23e8e8, 0xa17cdddd, 0xe89c7474, 0x3e211f1f,
-			0x96dd4b4b, 0x61dcbdbd, 0x0d868b8b, 0x0f858a8a, 0xe0907070, 0x7c423e3e, 0x71c4b5b5, 0xccaa6666, 0x90d84848,
-			0x06050303, 0xf701f6f6, 0x1c120e0e, 0xc2a36161, 0x6a5f3535, 0xaef95757, 0x69d0b9b9, 0x17918686, 0x9958c1c1,
-			0x3a271d1d, 0x27b99e9e, 0xd938e1e1, 0xeb13f8f8, 0x2bb39898, 0x22331111, 0xd2bb6969, 0xa970d9d9, 0x07898e8e,
-			0x33a79494, 0x2db69b9b, 0x3c221e1e, 0x15928787, 0xc920e9e9, 0x8749cece, 0xaaff5555, 0x50782828, 0xa57adfdf,
-			0x038f8c8c, 0x59f8a1a1, 0x09808989, 0x1a170d0d, 0x65dabfbf, 0xd731e6e6, 0x84c64242, 0xd0b86868, 0x82c34141,
-			0x29b09999, 0x5a772d2d, 0x1e110f0f, 0x7bcbb0b0, 0xa8fc5454, 0x6dd6bbbb, 0x2c3a1616 };
-
-	private static final int[] Tinv0 = { 0x50a7f451, 0x5365417e, 0xc3a4171a, 0x965e273a, 0xcb6bab3b, 0xf1459d1f,
-			0xab58faac, 0x9303e34b, 0x55fa3020, 0xf66d76ad, 0x9176cc88, 0x254c02f5, 0xfcd7e54f, 0xd7cb2ac5, 0x80443526,
-			0x8fa362b5, 0x495ab1de, 0x671bba25, 0x980eea45, 0xe1c0fe5d, 0x02752fc3, 0x12f04c81, 0xa397468d, 0xc6f9d36b,
-			0xe75f8f03, 0x959c9215, 0xeb7a6dbf, 0xda595295, 0x2d83bed4, 0xd3217458, 0x2969e049, 0x44c8c98e, 0x6a89c275,
-			0x78798ef4, 0x6b3e5899, 0xdd71b927, 0xb64fe1be, 0x17ad88f0, 0x66ac20c9, 0xb43ace7d, 0x184adf63, 0x82311ae5,
-			0x60335197, 0x457f5362, 0xe07764b1, 0x84ae6bbb, 0x1ca081fe, 0x942b08f9, 0x58684870, 0x19fd458f, 0x876cde94,
-			0xb7f87b52, 0x23d373ab, 0xe2024b72, 0x578f1fe3, 0x2aab5566, 0x0728ebb2, 0x03c2b52f, 0x9a7bc586, 0xa50837d3,
-			0xf2872830, 0xb2a5bf23, 0xba6a0302, 0x5c8216ed, 0x2b1ccf8a, 0x92b479a7, 0xf0f207f3, 0xa1e2694e, 0xcdf4da65,
-			0xd5be0506, 0x1f6234d1, 0x8afea6c4, 0x9d532e34, 0xa055f3a2, 0x32e18a05, 0x75ebf6a4, 0x39ec830b, 0xaaef6040,
-			0x069f715e, 0x51106ebd, 0xf98a213e, 0x3d06dd96, 0xae053edd, 0x46bde64d, 0xb58d5491, 0x055dc471, 0x6fd40604,
-			0xff155060, 0x24fb9819, 0x97e9bdd6, 0xcc434089, 0x779ed967, 0xbd42e8b0, 0x888b8907, 0x385b19e7, 0xdbeec879,
-			0x470a7ca1, 0xe90f427c, 0xc91e84f8, 0x00000000, 0x83868009, 0x48ed2b32, 0xac70111e, 0x4e725a6c, 0xfbff0efd,
-			0x5638850f, 0x1ed5ae3d, 0x27392d36, 0x64d90f0a, 0x21a65c68, 0xd1545b9b, 0x3a2e3624, 0xb1670a0c, 0x0fe75793,
-			0xd296eeb4, 0x9e919b1b, 0x4fc5c080, 0xa220dc61, 0x694b775a, 0x161a121c, 0x0aba93e2, 0xe52aa0c0, 0x43e0223c,
-			0x1d171b12, 0x0b0d090e, 0xadc78bf2, 0xb9a8b62d, 0xc8a91e14, 0x8519f157, 0x4c0775af, 0xbbdd99ee, 0xfd607fa3,
-			0x9f2601f7, 0xbcf5725c, 0xc53b6644, 0x347efb5b, 0x7629438b, 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8, 0xcadc31d7,
-			0x10856342, 0x40229713, 0x2011c684, 0x7d244a85, 0xf83dbbd2, 0x1132f9ae, 0x6da129c7, 0x4b2f9e1d, 0xf330b2dc,
-			0xec52860d, 0xd0e3c177, 0x6c16b32b, 0x99b970a9, 0xfa489411, 0x2264e947, 0xc48cfca8, 0x1a3ff0a0, 0xd82c7d56,
-			0xef903322, 0xc74e4987, 0xc1d138d9, 0xfea2ca8c, 0x360bd498, 0xcf81f5a6, 0x28de7aa5, 0x268eb7da, 0xa4bfad3f,
-			0xe49d3a2c, 0x0d927850, 0x9bcc5f6a, 0x62467e54, 0xc2138df6, 0xe8b8d890, 0x5ef7392e, 0xf5afc382, 0xbe805d9f,
-			0x7c93d069, 0xa92dd56f, 0xb31225cf, 0x3b99acc8, 0xa77d1810, 0x6e639ce8, 0x7bbb3bdb, 0x097826cd, 0xf418596e,
-			0x01b79aec, 0xa89a4f83, 0x656e95e6, 0x7ee6ffaa, 0x08cfbc21, 0xe6e815ef, 0xd99be7ba, 0xce366f4a, 0xd4099fea,
-			0xd67cb029, 0xafb2a431, 0x31233f2a, 0x3094a5c6, 0xc066a235, 0x37bc4e74, 0xa6ca82fc, 0xb0d090e0, 0x15d8a733,
-			0x4a9804f1, 0xf7daec41, 0x0e50cd7f, 0x2ff69117, 0x8dd64d76, 0x4db0ef43, 0x544daacc, 0xdf0496e4, 0xe3b5d19e,
-			0x1b886a4c, 0xb81f2cc1, 0x7f516546, 0x04ea5e9d, 0x5d358c01, 0x737487fa, 0x2e410bfb, 0x5a1d67b3, 0x52d2db92,
-			0x335610e9, 0x1347d66d, 0x8c61d79a, 0x7a0ca137, 0x8e14f859, 0x893c13eb, 0xee27a9ce, 0x35c961b7, 0xede51ce1,
-			0x3cb1477a, 0x59dfd29c, 0x3f73f255, 0x79ce1418, 0xbf37c773, 0xeacdf753, 0x5baafd5f, 0x146f3ddf, 0x86db4478,
-			0x81f3afca, 0x3ec468b9, 0x2c342438, 0x5f40a3c2, 0x72c31d16, 0x0c25e2bc, 0x8b493c28, 0x41950dff, 0x7101a839,
-			0xdeb30c08, 0x9ce4b4d8, 0x90c15664, 0x6184cb7b, 0x70b632d5, 0x745c6c48, 0x4257b8d0 };
-
-	private static final int[] Tinv1 = { 0xa7f45150, 0x65417e53, 0xa4171ac3, 0x5e273a96, 0x6bab3bcb, 0x459d1ff1,
-			0x58faacab, 0x03e34b93, 0xfa302055, 0x6d76adf6, 0x76cc8891, 0x4c02f525, 0xd7e54ffc, 0xcb2ac5d7, 0x44352680,
-			0xa362b58f, 0x5ab1de49, 0x1bba2567, 0x0eea4598, 0xc0fe5de1, 0x752fc302, 0xf04c8112, 0x97468da3, 0xf9d36bc6,
-			0x5f8f03e7, 0x9c921595, 0x7a6dbfeb, 0x595295da, 0x83bed42d, 0x217458d3, 0x69e04929, 0xc8c98e44, 0x89c2756a,
-			0x798ef478, 0x3e58996b, 0x71b927dd, 0x4fe1beb6, 0xad88f017, 0xac20c966, 0x3ace7db4, 0x4adf6318, 0x311ae582,
-			0x33519760, 0x7f536245, 0x7764b1e0, 0xae6bbb84, 0xa081fe1c, 0x2b08f994, 0x68487058, 0xfd458f19, 0x6cde9487,
-			0xf87b52b7, 0xd373ab23, 0x024b72e2, 0x8f1fe357, 0xab55662a, 0x28ebb207, 0xc2b52f03, 0x7bc5869a, 0x0837d3a5,
-			0x872830f2, 0xa5bf23b2, 0x6a0302ba, 0x8216ed5c, 0x1ccf8a2b, 0xb479a792, 0xf207f3f0, 0xe2694ea1, 0xf4da65cd,
-			0xbe0506d5, 0x6234d11f, 0xfea6c48a, 0x532e349d, 0x55f3a2a0, 0xe18a0532, 0xebf6a475, 0xec830b39, 0xef6040aa,
-			0x9f715e06, 0x106ebd51, 0x8a213ef9, 0x06dd963d, 0x053eddae, 0xbde64d46, 0x8d5491b5, 0x5dc47105, 0xd406046f,
-			0x155060ff, 0xfb981924, 0xe9bdd697, 0x434089cc, 0x9ed96777, 0x42e8b0bd, 0x8b890788, 0x5b19e738, 0xeec879db,
-			0x0a7ca147, 0x0f427ce9, 0x1e84f8c9, 0x00000000, 0x86800983, 0xed2b3248, 0x70111eac, 0x725a6c4e, 0xff0efdfb,
-			0x38850f56, 0xd5ae3d1e, 0x392d3627, 0xd90f0a64, 0xa65c6821, 0x545b9bd1, 0x2e36243a, 0x670a0cb1, 0xe757930f,
-			0x96eeb4d2, 0x919b1b9e, 0xc5c0804f, 0x20dc61a2, 0x4b775a69, 0x1a121c16, 0xba93e20a, 0x2aa0c0e5, 0xe0223c43,
-			0x171b121d, 0x0d090e0b, 0xc78bf2ad, 0xa8b62db9, 0xa91e14c8, 0x19f15785, 0x0775af4c, 0xdd99eebb, 0x607fa3fd,
-			0x2601f79f, 0xf5725cbc, 0x3b6644c5, 0x7efb5b34, 0x29438b76, 0xc623cbdc, 0xfcedb668, 0xf1e4b863, 0xdc31d7ca,
-			0x85634210, 0x22971340, 0x11c68420, 0x244a857d, 0x3dbbd2f8, 0x32f9ae11, 0xa129c76d, 0x2f9e1d4b, 0x30b2dcf3,
-			0x52860dec, 0xe3c177d0, 0x16b32b6c, 0xb970a999, 0x489411fa, 0x64e94722, 0x8cfca8c4, 0x3ff0a01a, 0x2c7d56d8,
-			0x903322ef, 0x4e4987c7, 0xd138d9c1, 0xa2ca8cfe, 0x0bd49836, 0x81f5a6cf, 0xde7aa528, 0x8eb7da26, 0xbfad3fa4,
-			0x9d3a2ce4, 0x9278500d, 0xcc5f6a9b, 0x467e5462, 0x138df6c2, 0xb8d890e8, 0xf7392e5e, 0xafc382f5, 0x805d9fbe,
-			0x93d0697c, 0x2dd56fa9, 0x1225cfb3, 0x99acc83b, 0x7d1810a7, 0x639ce86e, 0xbb3bdb7b, 0x7826cd09, 0x18596ef4,
-			0xb79aec01, 0x9a4f83a8, 0x6e95e665, 0xe6ffaa7e, 0xcfbc2108, 0xe815efe6, 0x9be7bad9, 0x366f4ace, 0x099fead4,
-			0x7cb029d6, 0xb2a431af, 0x233f2a31, 0x94a5c630, 0x66a235c0, 0xbc4e7437, 0xca82fca6, 0xd090e0b0, 0xd8a73315,
-			0x9804f14a, 0xdaec41f7, 0x50cd7f0e, 0xf691172f, 0xd64d768d, 0xb0ef434d, 0x4daacc54, 0x0496e4df, 0xb5d19ee3,
-			0x886a4c1b, 0x1f2cc1b8, 0x5165467f, 0xea5e9d04, 0x358c015d, 0x7487fa73, 0x410bfb2e, 0x1d67b35a, 0xd2db9252,
-			0x5610e933, 0x47d66d13, 0x61d79a8c, 0x0ca1377a, 0x14f8598e, 0x3c13eb89, 0x27a9ceee, 0xc961b735, 0xe51ce1ed,
-			0xb1477a3c, 0xdfd29c59, 0x73f2553f, 0xce141879, 0x37c773bf, 0xcdf753ea, 0xaafd5f5b, 0x6f3ddf14, 0xdb447886,
-			0xf3afca81, 0xc468b93e, 0x3424382c, 0x40a3c25f, 0xc31d1672, 0x25e2bc0c, 0x493c288b, 0x950dff41, 0x01a83971,
-			0xb30c08de, 0xe4b4d89c, 0xc1566490, 0x84cb7b61, 0xb632d570, 0x5c6c4874, 0x57b8d042 };
-
-	private static final int[] Tinv2 = { 0xf45150a7, 0x417e5365, 0x171ac3a4, 0x273a965e, 0xab3bcb6b, 0x9d1ff145,
-			0xfaacab58, 0xe34b9303, 0x302055fa, 0x76adf66d, 0xcc889176, 0x02f5254c, 0xe54ffcd7, 0x2ac5d7cb, 0x35268044,
-			0x62b58fa3, 0xb1de495a, 0xba25671b, 0xea45980e, 0xfe5de1c0, 0x2fc30275, 0x4c8112f0, 0x468da397, 0xd36bc6f9,
-			0x8f03e75f, 0x9215959c, 0x6dbfeb7a, 0x5295da59, 0xbed42d83, 0x7458d321, 0xe0492969, 0xc98e44c8, 0xc2756a89,
-			0x8ef47879, 0x58996b3e, 0xb927dd71, 0xe1beb64f, 0x88f017ad, 0x20c966ac, 0xce7db43a, 0xdf63184a, 0x1ae58231,
-			0x51976033, 0x5362457f, 0x64b1e077, 0x6bbb84ae, 0x81fe1ca0, 0x08f9942b, 0x48705868, 0x458f19fd, 0xde94876c,
-			0x7b52b7f8, 0x73ab23d3, 0x4b72e202, 0x1fe3578f, 0x55662aab, 0xebb20728, 0xb52f03c2, 0xc5869a7b, 0x37d3a508,
-			0x2830f287, 0xbf23b2a5, 0x0302ba6a, 0x16ed5c82, 0xcf8a2b1c, 0x79a792b4, 0x07f3f0f2, 0x694ea1e2, 0xda65cdf4,
-			0x0506d5be, 0x34d11f62, 0xa6c48afe, 0x2e349d53, 0xf3a2a055, 0x8a0532e1, 0xf6a475eb, 0x830b39ec, 0x6040aaef,
-			0x715e069f, 0x6ebd5110, 0x213ef98a, 0xdd963d06, 0x3eddae05, 0xe64d46bd, 0x5491b58d, 0xc471055d, 0x06046fd4,
-			0x5060ff15, 0x981924fb, 0xbdd697e9, 0x4089cc43, 0xd967779e, 0xe8b0bd42, 0x8907888b, 0x19e7385b, 0xc879dbee,
-			0x7ca1470a, 0x427ce90f, 0x84f8c91e, 0x00000000, 0x80098386, 0x2b3248ed, 0x111eac70, 0x5a6c4e72, 0x0efdfbff,
-			0x850f5638, 0xae3d1ed5, 0x2d362739, 0x0f0a64d9, 0x5c6821a6, 0x5b9bd154, 0x36243a2e, 0x0a0cb167, 0x57930fe7,
-			0xeeb4d296, 0x9b1b9e91, 0xc0804fc5, 0xdc61a220, 0x775a694b, 0x121c161a, 0x93e20aba, 0xa0c0e52a, 0x223c43e0,
-			0x1b121d17, 0x090e0b0d, 0x8bf2adc7, 0xb62db9a8, 0x1e14c8a9, 0xf1578519, 0x75af4c07, 0x99eebbdd, 0x7fa3fd60,
-			0x01f79f26, 0x725cbcf5, 0x6644c53b, 0xfb5b347e, 0x438b7629, 0x23cbdcc6, 0xedb668fc, 0xe4b863f1, 0x31d7cadc,
-			0x63421085, 0x97134022, 0xc6842011, 0x4a857d24, 0xbbd2f83d, 0xf9ae1132, 0x29c76da1, 0x9e1d4b2f, 0xb2dcf330,
-			0x860dec52, 0xc177d0e3, 0xb32b6c16, 0x70a999b9, 0x9411fa48, 0xe9472264, 0xfca8c48c, 0xf0a01a3f, 0x7d56d82c,
-			0x3322ef90, 0x4987c74e, 0x38d9c1d1, 0xca8cfea2, 0xd498360b, 0xf5a6cf81, 0x7aa528de, 0xb7da268e, 0xad3fa4bf,
-			0x3a2ce49d, 0x78500d92, 0x5f6a9bcc, 0x7e546246, 0x8df6c213, 0xd890e8b8, 0x392e5ef7, 0xc382f5af, 0x5d9fbe80,
-			0xd0697c93, 0xd56fa92d, 0x25cfb312, 0xacc83b99, 0x1810a77d, 0x9ce86e63, 0x3bdb7bbb, 0x26cd0978, 0x596ef418,
-			0x9aec01b7, 0x4f83a89a, 0x95e6656e, 0xffaa7ee6, 0xbc2108cf, 0x15efe6e8, 0xe7bad99b, 0x6f4ace36, 0x9fead409,
-			0xb029d67c, 0xa431afb2, 0x3f2a3123, 0xa5c63094, 0xa235c066, 0x4e7437bc, 0x82fca6ca, 0x90e0b0d0, 0xa73315d8,
-			0x04f14a98, 0xec41f7da, 0xcd7f0e50, 0x91172ff6, 0x4d768dd6, 0xef434db0, 0xaacc544d, 0x96e4df04, 0xd19ee3b5,
-			0x6a4c1b88, 0x2cc1b81f, 0x65467f51, 0x5e9d04ea, 0x8c015d35, 0x87fa7374, 0x0bfb2e41, 0x67b35a1d, 0xdb9252d2,
-			0x10e93356, 0xd66d1347, 0xd79a8c61, 0xa1377a0c, 0xf8598e14, 0x13eb893c, 0xa9ceee27, 0x61b735c9, 0x1ce1ede5,
-			0x477a3cb1, 0xd29c59df, 0xf2553f73, 0x141879ce, 0xc773bf37, 0xf753eacd, 0xfd5f5baa, 0x3ddf146f, 0x447886db,
-			0xafca81f3, 0x68b93ec4, 0x24382c34, 0xa3c25f40, 0x1d1672c3, 0xe2bc0c25, 0x3c288b49, 0x0dff4195, 0xa8397101,
-			0x0c08deb3, 0xb4d89ce4, 0x566490c1, 0xcb7b6184, 0x32d570b6, 0x6c48745c, 0xb8d04257 };
-
-	private static final int[] Tinv3 = { 0x5150a7f4, 0x7e536541, 0x1ac3a417, 0x3a965e27, 0x3bcb6bab, 0x1ff1459d,
-			0xacab58fa, 0x4b9303e3, 0x2055fa30, 0xadf66d76, 0x889176cc, 0xf5254c02, 0x4ffcd7e5, 0xc5d7cb2a, 0x26804435,
-			0xb58fa362, 0xde495ab1, 0x25671bba, 0x45980eea, 0x5de1c0fe, 0xc302752f, 0x8112f04c, 0x8da39746, 0x6bc6f9d3,
-			0x03e75f8f, 0x15959c92, 0xbfeb7a6d, 0x95da5952, 0xd42d83be, 0x58d32174, 0x492969e0, 0x8e44c8c9, 0x756a89c2,
-			0xf478798e, 0x996b3e58, 0x27dd71b9, 0xbeb64fe1, 0xf017ad88, 0xc966ac20, 0x7db43ace, 0x63184adf, 0xe582311a,
-			0x97603351, 0x62457f53, 0xb1e07764, 0xbb84ae6b, 0xfe1ca081, 0xf9942b08, 0x70586848, 0x8f19fd45, 0x94876cde,
-			0x52b7f87b, 0xab23d373, 0x72e2024b, 0xe3578f1f, 0x662aab55, 0xb20728eb, 0x2f03c2b5, 0x869a7bc5, 0xd3a50837,
-			0x30f28728, 0x23b2a5bf, 0x02ba6a03, 0xed5c8216, 0x8a2b1ccf, 0xa792b479, 0xf3f0f207, 0x4ea1e269, 0x65cdf4da,
-			0x06d5be05, 0xd11f6234, 0xc48afea6, 0x349d532e, 0xa2a055f3, 0x0532e18a, 0xa475ebf6, 0x0b39ec83, 0x40aaef60,
-			0x5e069f71, 0xbd51106e, 0x3ef98a21, 0x963d06dd, 0xddae053e, 0x4d46bde6, 0x91b58d54, 0x71055dc4, 0x046fd406,
-			0x60ff1550, 0x1924fb98, 0xd697e9bd, 0x89cc4340, 0x67779ed9, 0xb0bd42e8, 0x07888b89, 0xe7385b19, 0x79dbeec8,
-			0xa1470a7c, 0x7ce90f42, 0xf8c91e84, 0x00000000, 0x09838680, 0x3248ed2b, 0x1eac7011, 0x6c4e725a, 0xfdfbff0e,
-			0x0f563885, 0x3d1ed5ae, 0x3627392d, 0x0a64d90f, 0x6821a65c, 0x9bd1545b, 0x243a2e36, 0x0cb1670a, 0x930fe757,
-			0xb4d296ee, 0x1b9e919b, 0x804fc5c0, 0x61a220dc, 0x5a694b77, 0x1c161a12, 0xe20aba93, 0xc0e52aa0, 0x3c43e022,
-			0x121d171b, 0x0e0b0d09, 0xf2adc78b, 0x2db9a8b6, 0x14c8a91e, 0x578519f1, 0xaf4c0775, 0xeebbdd99, 0xa3fd607f,
-			0xf79f2601, 0x5cbcf572, 0x44c53b66, 0x5b347efb, 0x8b762943, 0xcbdcc623, 0xb668fced, 0xb863f1e4, 0xd7cadc31,
-			0x42108563, 0x13402297, 0x842011c6, 0x857d244a, 0xd2f83dbb, 0xae1132f9, 0xc76da129, 0x1d4b2f9e, 0xdcf330b2,
-			0x0dec5286, 0x77d0e3c1, 0x2b6c16b3, 0xa999b970, 0x11fa4894, 0x472264e9, 0xa8c48cfc, 0xa01a3ff0, 0x56d82c7d,
-			0x22ef9033, 0x87c74e49, 0xd9c1d138, 0x8cfea2ca, 0x98360bd4, 0xa6cf81f5, 0xa528de7a, 0xda268eb7, 0x3fa4bfad,
-			0x2ce49d3a, 0x500d9278, 0x6a9bcc5f, 0x5462467e, 0xf6c2138d, 0x90e8b8d8, 0x2e5ef739, 0x82f5afc3, 0x9fbe805d,
-			0x697c93d0, 0x6fa92dd5, 0xcfb31225, 0xc83b99ac, 0x10a77d18, 0xe86e639c, 0xdb7bbb3b, 0xcd097826, 0x6ef41859,
-			0xec01b79a, 0x83a89a4f, 0xe6656e95, 0xaa7ee6ff, 0x2108cfbc, 0xefe6e815, 0xbad99be7, 0x4ace366f, 0xead4099f,
-			0x29d67cb0, 0x31afb2a4, 0x2a31233f, 0xc63094a5, 0x35c066a2, 0x7437bc4e, 0xfca6ca82, 0xe0b0d090, 0x3315d8a7,
-			0xf14a9804, 0x41f7daec, 0x7f0e50cd, 0x172ff691, 0x768dd64d, 0x434db0ef, 0xcc544daa, 0xe4df0496, 0x9ee3b5d1,
-			0x4c1b886a, 0xc1b81f2c, 0x467f5165, 0x9d04ea5e, 0x015d358c, 0xfa737487, 0xfb2e410b, 0xb35a1d67, 0x9252d2db,
-			0xe9335610, 0x6d1347d6, 0x9a8c61d7, 0x377a0ca1, 0x598e14f8, 0xeb893c13, 0xceee27a9, 0xb735c961, 0xe1ede51c,
-			0x7a3cb147, 0x9c59dfd2, 0x553f73f2, 0x1879ce14, 0x73bf37c7, 0x53eacdf7, 0x5f5baafd, 0xdf146f3d, 0x7886db44,
-			0xca81f3af, 0xb93ec468, 0x382c3424, 0xc25f40a3, 0x1672c31d, 0xbc0c25e2, 0x288b493c, 0xff41950d, 0x397101a8,
-			0x08deb30c, 0xd89ce4b4, 0x6490c156, 0x7b6184cb, 0xd570b632, 0x48745c6c, 0xd04257b8 };
-
-	private final int shift(int r, int shift)
-	{
-		return (((r >>> shift) | (r << (32 - shift))));
-	}
-
-	/* multiply four bytes in GF(2^8) by 'x' {02} in parallel */
-
-	private static final int m1 = 0x80808080;
-	private static final int m2 = 0x7f7f7f7f;
-	private static final int m3 = 0x0000001b;
-
-	private final int FFmulX(int x)
-	{
-		return (((x & m2) << 1) ^ (((x & m1) >>> 7) * m3));
-	}
-
-	/*
-	 * The following defines provide alternative definitions of FFmulX that
-	 * might give improved performance if a fast 32-bit multiply is not
-	 * available.
-	 * 
-	 * private int FFmulX(int x) { int u = x & m1; u |= (u >> 1); return ((x &
-	 * m2) < < 1) ^ ((u >>> 3) | (u >>> 6)); } private static final int m4 =
-	 * 0x1b1b1b1b; private int FFmulX(int x) { int u = x & m1; return ((x & m2) < <
-	 * 1) ^ ((u - (u >>> 7)) & m4); }
-	 * 
-	 */
-
-	private final int inv_mcol(int x)
-	{
-		int f2 = FFmulX(x);
-		int f4 = FFmulX(f2);
-		int f8 = FFmulX(f4);
-		int f9 = x ^ f8;
-
-		return f2 ^ f4 ^ f8 ^ shift(f2 ^ f9, 8) ^ shift(f4 ^ f9, 16) ^ shift(f9, 24);
-	}
-
-	private final int subWord(int x)
-	{
-		return (S[x & 255] & 255 | ((S[(x >> 8) & 255] & 255) << 8) | ((S[(x >> 16) & 255] & 255) << 16) | S[(x >> 24) & 255] << 24);
-	}
-
-	/**
-	 * Calculate the necessary round keys The number of calculations depends on
-	 * key size and block size AES specified a fixed block size of 128 bits and
-	 * key sizes 128/192/256 bits This code is written assuming those are the
-	 * only possible values
-	 */
-	private final int[][] generateWorkingKey(byte[] key, boolean forEncryption)
-	{
-		int KC = key.length / 4; // key length in words
-		int t;
-
-		if (((KC != 4) && (KC != 6) && (KC != 8)) || ((KC * 4) != key.length))
-		{
-			throw new IllegalArgumentException("Key length not 128/192/256 bits.");
-		}
-
-		ROUNDS = KC + 6; // This is not always true for the generalized
-		// Rijndael that allows larger block sizes
-		int[][] W = new int[ROUNDS + 1][4]; // 4 words in a block
-
-		//
-		// copy the key into the round key array
-		//
-
-		t = 0;
-		for (int i = 0; i < key.length; t++)
-		{
-			W[t >> 2][t & 3] = (key[i] & 0xff) | ((key[i + 1] & 0xff) << 8) | ((key[i + 2] & 0xff) << 16)
-					| (key[i + 3] << 24);
-			i += 4;
-		}
-
-		//
-		// while not enough round key material calculated
-		// calculate new values
-		//
-		int k = (ROUNDS + 1) << 2;
-		for (int i = KC; (i < k); i++)
-		{
-			int temp = W[(i - 1) >> 2][(i - 1) & 3];
-			if ((i % KC) == 0)
-			{
-				temp = subWord(shift(temp, 8)) ^ rcon[(i / KC) - 1];
-			}
-			else if ((KC > 6) && ((i % KC) == 4))
-			{
-				temp = subWord(temp);
-			}
-
-			W[i >> 2][i & 3] = W[(i - KC) >> 2][(i - KC) & 3] ^ temp;
-		}
-
-		if (!forEncryption)
-		{
-			for (int j = 1; j < ROUNDS; j++)
-			{
-				for (int i = 0; i < 4; i++)
-				{
-					W[j][i] = inv_mcol(W[j][i]);
-				}
-			}
-		}
-
-		return W;
-	}
-
-	private int ROUNDS;
-	private int[][] WorkingKey = null;
-	private int C0, C1, C2, C3;
-	private boolean doEncrypt;
-
-	private static final int BLOCK_SIZE = 16;
-
-	/**
-	 * default constructor - 128 bit block size.
-	 */
-	public AES()
-	{
-	}
-
-	/**
-	 * initialise an AES cipher.
-	 * 
-	 * @param forEncryption
-	 *            whether or not we are for encryption.
-	 * @param key
-	 *            the key required to set up the cipher.
-	 * @exception IllegalArgumentException
-	 *                if the params argument is inappropriate.
-	 */
-
-	public final void init(boolean forEncryption, byte[] key)
-	{
-		WorkingKey = generateWorkingKey(key, forEncryption);
-		this.doEncrypt = forEncryption;
-	}
-
-	public final String getAlgorithmName()
-	{
-		return "AES";
-	}
-
-	public final int getBlockSize()
-	{
-		return BLOCK_SIZE;
-	}
-
-	public final int processBlock(byte[] in, int inOff, byte[] out, int outOff)
-	{
-		if (WorkingKey == null)
-		{
-			throw new IllegalStateException("AES engine not initialised");
-		}
-
-		if ((inOff + (32 / 2)) > in.length)
-		{
-			throw new IllegalArgumentException("input buffer too short");
-		}
-
-		if ((outOff + (32 / 2)) > out.length)
-		{
-			throw new IllegalArgumentException("output buffer too short");
-		}
-
-		if (doEncrypt)
-		{
-			unpackBlock(in, inOff);
-			encryptBlock(WorkingKey);
-			packBlock(out, outOff);
-		}
-		else
-		{
-			unpackBlock(in, inOff);
-			decryptBlock(WorkingKey);
-			packBlock(out, outOff);
-		}
-
-		return BLOCK_SIZE;
-	}
-
-	public final void reset()
-	{
-	}
-
-	private final void unpackBlock(byte[] bytes, int off)
-	{
-		int index = off;
-
-		C0 = (bytes[index++] & 0xff);
-		C0 |= (bytes[index++] & 0xff) << 8;
-		C0 |= (bytes[index++] & 0xff) << 16;
-		C0 |= bytes[index++] << 24;
-
-		C1 = (bytes[index++] & 0xff);
-		C1 |= (bytes[index++] & 0xff) << 8;
-		C1 |= (bytes[index++] & 0xff) << 16;
-		C1 |= bytes[index++] << 24;
-
-		C2 = (bytes[index++] & 0xff);
-		C2 |= (bytes[index++] & 0xff) << 8;
-		C2 |= (bytes[index++] & 0xff) << 16;
-		C2 |= bytes[index++] << 24;
-
-		C3 = (bytes[index++] & 0xff);
-		C3 |= (bytes[index++] & 0xff) << 8;
-		C3 |= (bytes[index++] & 0xff) << 16;
-		C3 |= bytes[index++] << 24;
-	}
-
-	private final void packBlock(byte[] bytes, int off)
-	{
-		int index = off;
-
-		bytes[index++] = (byte) C0;
-		bytes[index++] = (byte) (C0 >> 8);
-		bytes[index++] = (byte) (C0 >> 16);
-		bytes[index++] = (byte) (C0 >> 24);
-
-		bytes[index++] = (byte) C1;
-		bytes[index++] = (byte) (C1 >> 8);
-		bytes[index++] = (byte) (C1 >> 16);
-		bytes[index++] = (byte) (C1 >> 24);
-
-		bytes[index++] = (byte) C2;
-		bytes[index++] = (byte) (C2 >> 8);
-		bytes[index++] = (byte) (C2 >> 16);
-		bytes[index++] = (byte) (C2 >> 24);
-
-		bytes[index++] = (byte) C3;
-		bytes[index++] = (byte) (C3 >> 8);
-		bytes[index++] = (byte) (C3 >> 16);
-		bytes[index++] = (byte) (C3 >> 24);
-	}
-
-	private final void encryptBlock(int[][] KW)
-	{
-		int r, r0, r1, r2, r3;
-
-		C0 ^= KW[0][0];
-		C1 ^= KW[0][1];
-		C2 ^= KW[0][2];
-		C3 ^= KW[0][3];
-
-		for (r = 1; r < ROUNDS - 1;)
-		{
-			r0 = T0[C0 & 255] ^ T1[(C1 >> 8) & 255] ^ T2[(C2 >> 16) & 255] ^ T3[(C3 >> 24) & 255] ^ KW[r][0];
-			r1 = T0[C1 & 255] ^ T1[(C2 >> 8) & 255] ^ T2[(C3 >> 16) & 255] ^ T3[(C0 >> 24) & 255] ^ KW[r][1];
-			r2 = T0[C2 & 255] ^ T1[(C3 >> 8) & 255] ^ T2[(C0 >> 16) & 255] ^ T3[(C1 >> 24) & 255] ^ KW[r][2];
-			r3 = T0[C3 & 255] ^ T1[(C0 >> 8) & 255] ^ T2[(C1 >> 16) & 255] ^ T3[(C2 >> 24) & 255] ^ KW[r++][3];
-			C0 = T0[r0 & 255] ^ T1[(r1 >> 8) & 255] ^ T2[(r2 >> 16) & 255] ^ T3[(r3 >> 24) & 255] ^ KW[r][0];
-			C1 = T0[r1 & 255] ^ T1[(r2 >> 8) & 255] ^ T2[(r3 >> 16) & 255] ^ T3[(r0 >> 24) & 255] ^ KW[r][1];
-			C2 = T0[r2 & 255] ^ T1[(r3 >> 8) & 255] ^ T2[(r0 >> 16) & 255] ^ T3[(r1 >> 24) & 255] ^ KW[r][2];
-			C3 = T0[r3 & 255] ^ T1[(r0 >> 8) & 255] ^ T2[(r1 >> 16) & 255] ^ T3[(r2 >> 24) & 255] ^ KW[r++][3];
-		}
-
-		r0 = T0[C0 & 255] ^ T1[(C1 >> 8) & 255] ^ T2[(C2 >> 16) & 255] ^ T3[(C3 >> 24) & 255] ^ KW[r][0];
-		r1 = T0[C1 & 255] ^ T1[(C2 >> 8) & 255] ^ T2[(C3 >> 16) & 255] ^ T3[(C0 >> 24) & 255] ^ KW[r][1];
-		r2 = T0[C2 & 255] ^ T1[(C3 >> 8) & 255] ^ T2[(C0 >> 16) & 255] ^ T3[(C1 >> 24) & 255] ^ KW[r][2];
-		r3 = T0[C3 & 255] ^ T1[(C0 >> 8) & 255] ^ T2[(C1 >> 16) & 255] ^ T3[(C2 >> 24) & 255] ^ KW[r++][3];
-
-		// the final round's table is a simple function of S so we don't use a
-		// whole other four tables for it
-
-		C0 = (S[r0 & 255] & 255) ^ ((S[(r1 >> 8) & 255] & 255) << 8) ^ ((S[(r2 >> 16) & 255] & 255) << 16)
-				^ (S[(r3 >> 24) & 255] << 24) ^ KW[r][0];
-		C1 = (S[r1 & 255] & 255) ^ ((S[(r2 >> 8) & 255] & 255) << 8) ^ ((S[(r3 >> 16) & 255] & 255) << 16)
-				^ (S[(r0 >> 24) & 255] << 24) ^ KW[r][1];
-		C2 = (S[r2 & 255] & 255) ^ ((S[(r3 >> 8) & 255] & 255) << 8) ^ ((S[(r0 >> 16) & 255] & 255) << 16)
-				^ (S[(r1 >> 24) & 255] << 24) ^ KW[r][2];
-		C3 = (S[r3 & 255] & 255) ^ ((S[(r0 >> 8) & 255] & 255) << 8) ^ ((S[(r1 >> 16) & 255] & 255) << 16)
-				^ (S[(r2 >> 24) & 255] << 24) ^ KW[r][3];
-
-	}
-
-	private final void decryptBlock(int[][] KW)
-	{
-		int r, r0, r1, r2, r3;
-
-		C0 ^= KW[ROUNDS][0];
-		C1 ^= KW[ROUNDS][1];
-		C2 ^= KW[ROUNDS][2];
-		C3 ^= KW[ROUNDS][3];
-
-		for (r = ROUNDS - 1; r > 1;)
-		{
-			r0 = Tinv0[C0 & 255] ^ Tinv1[(C3 >> 8) & 255] ^ Tinv2[(C2 >> 16) & 255] ^ Tinv3[(C1 >> 24) & 255]
-					^ KW[r][0];
-			r1 = Tinv0[C1 & 255] ^ Tinv1[(C0 >> 8) & 255] ^ Tinv2[(C3 >> 16) & 255] ^ Tinv3[(C2 >> 24) & 255]
-					^ KW[r][1];
-			r2 = Tinv0[C2 & 255] ^ Tinv1[(C1 >> 8) & 255] ^ Tinv2[(C0 >> 16) & 255] ^ Tinv3[(C3 >> 24) & 255]
-					^ KW[r][2];
-			r3 = Tinv0[C3 & 255] ^ Tinv1[(C2 >> 8) & 255] ^ Tinv2[(C1 >> 16) & 255] ^ Tinv3[(C0 >> 24) & 255]
-					^ KW[r--][3];
-			C0 = Tinv0[r0 & 255] ^ Tinv1[(r3 >> 8) & 255] ^ Tinv2[(r2 >> 16) & 255] ^ Tinv3[(r1 >> 24) & 255]
-					^ KW[r][0];
-			C1 = Tinv0[r1 & 255] ^ Tinv1[(r0 >> 8) & 255] ^ Tinv2[(r3 >> 16) & 255] ^ Tinv3[(r2 >> 24) & 255]
-					^ KW[r][1];
-			C2 = Tinv0[r2 & 255] ^ Tinv1[(r1 >> 8) & 255] ^ Tinv2[(r0 >> 16) & 255] ^ Tinv3[(r3 >> 24) & 255]
-					^ KW[r][2];
-			C3 = Tinv0[r3 & 255] ^ Tinv1[(r2 >> 8) & 255] ^ Tinv2[(r1 >> 16) & 255] ^ Tinv3[(r0 >> 24) & 255]
-					^ KW[r--][3];
-		}
-
-		r0 = Tinv0[C0 & 255] ^ Tinv1[(C3 >> 8) & 255] ^ Tinv2[(C2 >> 16) & 255] ^ Tinv3[(C1 >> 24) & 255] ^ KW[r][0];
-		r1 = Tinv0[C1 & 255] ^ Tinv1[(C0 >> 8) & 255] ^ Tinv2[(C3 >> 16) & 255] ^ Tinv3[(C2 >> 24) & 255] ^ KW[r][1];
-		r2 = Tinv0[C2 & 255] ^ Tinv1[(C1 >> 8) & 255] ^ Tinv2[(C0 >> 16) & 255] ^ Tinv3[(C3 >> 24) & 255] ^ KW[r][2];
-		r3 = Tinv0[C3 & 255] ^ Tinv1[(C2 >> 8) & 255] ^ Tinv2[(C1 >> 16) & 255] ^ Tinv3[(C0 >> 24) & 255] ^ KW[r--][3];
-
-		// the final round's table is a simple function of Si so we don't use a
-		// whole other four tables for it
-
-		C0 = (Si[r0 & 255] & 255) ^ ((Si[(r3 >> 8) & 255] & 255) << 8) ^ ((Si[(r2 >> 16) & 255] & 255) << 16)
-				^ (Si[(r1 >> 24) & 255] << 24) ^ KW[0][0];
-		C1 = (Si[r1 & 255] & 255) ^ ((Si[(r0 >> 8) & 255] & 255) << 8) ^ ((Si[(r3 >> 16) & 255] & 255) << 16)
-				^ (Si[(r2 >> 24) & 255] << 24) ^ KW[0][1];
-		C2 = (Si[r2 & 255] & 255) ^ ((Si[(r1 >> 8) & 255] & 255) << 8) ^ ((Si[(r0 >> 16) & 255] & 255) << 16)
-				^ (Si[(r3 >> 24) & 255] << 24) ^ KW[0][2];
-		C3 = (Si[r3 & 255] & 255) ^ ((Si[(r2 >> 8) & 255] & 255) << 8) ^ ((Si[(r1 >> 16) & 255] & 255) << 16)
-				^ (Si[(r0 >> 24) & 255] << 24) ^ KW[0][3];
-	}
-
-	public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
-	{
-		processBlock(src, srcoff, dst, dstoff);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipher.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipher.java
deleted file mode 100644
index 4cc28ab..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipher.java
+++ /dev/null
@@ -1,16 +0,0 @@
-package com.trilead.ssh2.crypto.cipher;
-
-/**
- * BlockCipher.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: BlockCipher.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public interface BlockCipher
-{
-	public void init(boolean forEncryption, byte[] key);
-
-	public int getBlockSize();
-
-	public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff);
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipherFactory.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipherFactory.java
deleted file mode 100644
index 6e386a5..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/BlockCipherFactory.java
+++ /dev/null
@@ -1,115 +0,0 @@
-
-package com.trilead.ssh2.crypto.cipher;
-
-import java.util.Vector;
-
-/**
- * BlockCipherFactory.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: BlockCipherFactory.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class BlockCipherFactory
-{
-	static class CipherEntry
-	{
-		String type;
-		int blocksize;
-		int keysize;
-		String cipherClass;
-
-		public CipherEntry(String type, int blockSize, int keySize, String cipherClass)
-		{
-			this.type = type;
-			this.blocksize = blockSize;
-			this.keysize = keySize;
-			this.cipherClass = cipherClass;
-		}
-	}
-
-	static Vector<CipherEntry> ciphers = new Vector<CipherEntry>();
-
-	static
-	{
-		/* Higher Priority First */
-
-		ciphers.addElement(new CipherEntry("aes256-ctr", 16, 32, "com.trilead.ssh2.crypto.cipher.AES"));
-		ciphers.addElement(new CipherEntry("aes192-ctr", 16, 24, "com.trilead.ssh2.crypto.cipher.AES"));
-		ciphers.addElement(new CipherEntry("aes128-ctr", 16, 16, "com.trilead.ssh2.crypto.cipher.AES"));
-		ciphers.addElement(new CipherEntry("blowfish-ctr", 8, 16, "com.trilead.ssh2.crypto.cipher.BlowFish"));
-
-		ciphers.addElement(new CipherEntry("aes256-cbc", 16, 32, "com.trilead.ssh2.crypto.cipher.AES"));
-		ciphers.addElement(new CipherEntry("aes192-cbc", 16, 24, "com.trilead.ssh2.crypto.cipher.AES"));
-		ciphers.addElement(new CipherEntry("aes128-cbc", 16, 16, "com.trilead.ssh2.crypto.cipher.AES"));
-		ciphers.addElement(new CipherEntry("blowfish-cbc", 8, 16, "com.trilead.ssh2.crypto.cipher.BlowFish"));
-		
-		ciphers.addElement(new CipherEntry("3des-ctr", 8, 24, "com.trilead.ssh2.crypto.cipher.DESede"));
-		ciphers.addElement(new CipherEntry("3des-cbc", 8, 24, "com.trilead.ssh2.crypto.cipher.DESede"));
-	}
-
-	public static String[] getDefaultCipherList()
-	{
-		String list[] = new String[ciphers.size()];
-		for (int i = 0; i < ciphers.size(); i++)
-		{
-			CipherEntry ce = ciphers.elementAt(i);
-			list[i] = new String(ce.type);
-		}
-		return list;
-	}
-
-	public static void checkCipherList(String[] cipherCandidates)
-	{
-		for (int i = 0; i < cipherCandidates.length; i++)
-			getEntry(cipherCandidates[i]);
-	}
-
-	public static BlockCipher createCipher(String type, boolean encrypt, byte[] key, byte[] iv)
-	{
-		try
-		{
-			CipherEntry ce = getEntry(type);
-			Class cc = Class.forName(ce.cipherClass);
-			BlockCipher bc = (BlockCipher) cc.newInstance();
-
-			if (type.endsWith("-cbc"))
-			{
-				bc.init(encrypt, key);
-				return new CBCMode(bc, iv, encrypt);
-			}
-			else if (type.endsWith("-ctr"))
-			{
-				bc.init(true, key);
-				return new CTRMode(bc, iv, encrypt);
-			}
-			throw new IllegalArgumentException("Cannot instantiate " + type);
-		}
-		catch (Exception e)
-		{
-			throw new IllegalArgumentException("Cannot instantiate " + type);
-		}
-	}
-
-	private static CipherEntry getEntry(String type)
-	{
-		for (int i = 0; i < ciphers.size(); i++)
-		{
-			CipherEntry ce = ciphers.elementAt(i);
-			if (ce.type.equals(type))
-				return ce;
-		}
-		throw new IllegalArgumentException("Unkown algorithm " + type);
-	}
-
-	public static int getBlockSize(String type)
-	{
-		CipherEntry ce = getEntry(type);
-		return ce.blocksize;
-	}
-
-	public static int getKeySize(String type)
-	{
-		CipherEntry ce = getEntry(type);
-		return ce.keysize;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/BlowFish.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/BlowFish.java
deleted file mode 100644
index 0b2f295..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/BlowFish.java
+++ /dev/null
@@ -1,403 +0,0 @@
-
-package com.trilead.ssh2.crypto.cipher;
-
-/*
- This file was shamelessly taken from the Bouncy Castle Crypto package.
- Their licence file states the following:
-
- Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle
- (http://www.bouncycastle.org)
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE. 
- */
-
-/**
- * A class that provides Blowfish key encryption operations, such as encoding
- * data and generating keys. All the algorithms herein are from Applied
- * Cryptography and implement a simplified cryptography interface.
- * 
- * @author See comments in the source file
- * @version $Id: BlowFish.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class BlowFish implements BlockCipher
-{
-
-	private final static int[] KP = { 0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344, 0xA4093822, 0x299F31D0,
-			0x082EFA98, 0xEC4E6C89, 0x452821E6, 0x38D01377, 0xBE5466CF, 0x34E90C6C, 0xC0AC29B7, 0xC97C50DD, 0x3F84D5B5,
-			0xB5470917, 0x9216D5D9, 0x8979FB1B },
-
-	KS0 = { 0xD1310BA6, 0x98DFB5AC, 0x2FFD72DB, 0xD01ADFB7, 0xB8E1AFED, 0x6A267E96, 0xBA7C9045, 0xF12C7F99, 0x24A19947,
-			0xB3916CF7, 0x0801F2E2, 0x858EFC16, 0x636920D8, 0x71574E69, 0xA458FEA3, 0xF4933D7E, 0x0D95748F, 0x728EB658,
-			0x718BCD58, 0x82154AEE, 0x7B54A41D, 0xC25A59B5, 0x9C30D539, 0x2AF26013, 0xC5D1B023, 0x286085F0, 0xCA417918,
-			0xB8DB38EF, 0x8E79DCB0, 0x603A180E, 0x6C9E0E8B, 0xB01E8A3E, 0xD71577C1, 0xBD314B27, 0x78AF2FDA, 0x55605C60,
-			0xE65525F3, 0xAA55AB94, 0x57489862, 0x63E81440, 0x55CA396A, 0x2AAB10B6, 0xB4CC5C34, 0x1141E8CE, 0xA15486AF,
-			0x7C72E993, 0xB3EE1411, 0x636FBC2A, 0x2BA9C55D, 0x741831F6, 0xCE5C3E16, 0x9B87931E, 0xAFD6BA33, 0x6C24CF5C,
-			0x7A325381, 0x28958677, 0x3B8F4898, 0x6B4BB9AF, 0xC4BFE81B, 0x66282193, 0x61D809CC, 0xFB21A991, 0x487CAC60,
-			0x5DEC8032, 0xEF845D5D, 0xE98575B1, 0xDC262302, 0xEB651B88, 0x23893E81, 0xD396ACC5, 0x0F6D6FF3, 0x83F44239,
-			0x2E0B4482, 0xA4842004, 0x69C8F04A, 0x9E1F9B5E, 0x21C66842, 0xF6E96C9A, 0x670C9C61, 0xABD388F0, 0x6A51A0D2,
-			0xD8542F68, 0x960FA728, 0xAB5133A3, 0x6EEF0B6C, 0x137A3BE4, 0xBA3BF050, 0x7EFB2A98, 0xA1F1651D, 0x39AF0176,
-			0x66CA593E, 0x82430E88, 0x8CEE8619, 0x456F9FB4, 0x7D84A5C3, 0x3B8B5EBE, 0xE06F75D8, 0x85C12073, 0x401A449F,
-			0x56C16AA6, 0x4ED3AA62, 0x363F7706, 0x1BFEDF72, 0x429B023D, 0x37D0D724, 0xD00A1248, 0xDB0FEAD3, 0x49F1C09B,
-			0x075372C9, 0x80991B7B, 0x25D479D8, 0xF6E8DEF7, 0xE3FE501A, 0xB6794C3B, 0x976CE0BD, 0x04C006BA, 0xC1A94FB6,
-			0x409F60C4, 0x5E5C9EC2, 0x196A2463, 0x68FB6FAF, 0x3E6C53B5, 0x1339B2EB, 0x3B52EC6F, 0x6DFC511F, 0x9B30952C,
-			0xCC814544, 0xAF5EBD09, 0xBEE3D004, 0xDE334AFD, 0x660F2807, 0x192E4BB3, 0xC0CBA857, 0x45C8740F, 0xD20B5F39,
-			0xB9D3FBDB, 0x5579C0BD, 0x1A60320A, 0xD6A100C6, 0x402C7279, 0x679F25FE, 0xFB1FA3CC, 0x8EA5E9F8, 0xDB3222F8,
-			0x3C7516DF, 0xFD616B15, 0x2F501EC8, 0xAD0552AB, 0x323DB5FA, 0xFD238760, 0x53317B48, 0x3E00DF82, 0x9E5C57BB,
-			0xCA6F8CA0, 0x1A87562E, 0xDF1769DB, 0xD542A8F6, 0x287EFFC3, 0xAC6732C6, 0x8C4F5573, 0x695B27B0, 0xBBCA58C8,
-			0xE1FFA35D, 0xB8F011A0, 0x10FA3D98, 0xFD2183B8, 0x4AFCB56C, 0x2DD1D35B, 0x9A53E479, 0xB6F84565, 0xD28E49BC,
-			0x4BFB9790, 0xE1DDF2DA, 0xA4CB7E33, 0x62FB1341, 0xCEE4C6E8, 0xEF20CADA, 0x36774C01, 0xD07E9EFE, 0x2BF11FB4,
-			0x95DBDA4D, 0xAE909198, 0xEAAD8E71, 0x6B93D5A0, 0xD08ED1D0, 0xAFC725E0, 0x8E3C5B2F, 0x8E7594B7, 0x8FF6E2FB,
-			0xF2122B64, 0x8888B812, 0x900DF01C, 0x4FAD5EA0, 0x688FC31C, 0xD1CFF191, 0xB3A8C1AD, 0x2F2F2218, 0xBE0E1777,
-			0xEA752DFE, 0x8B021FA1, 0xE5A0CC0F, 0xB56F74E8, 0x18ACF3D6, 0xCE89E299, 0xB4A84FE0, 0xFD13E0B7, 0x7CC43B81,
-			0xD2ADA8D9, 0x165FA266, 0x80957705, 0x93CC7314, 0x211A1477, 0xE6AD2065, 0x77B5FA86, 0xC75442F5, 0xFB9D35CF,
-			0xEBCDAF0C, 0x7B3E89A0, 0xD6411BD3, 0xAE1E7E49, 0x00250E2D, 0x2071B35E, 0x226800BB, 0x57B8E0AF, 0x2464369B,
-			0xF009B91E, 0x5563911D, 0x59DFA6AA, 0x78C14389, 0xD95A537F, 0x207D5BA2, 0x02E5B9C5, 0x83260376, 0x6295CFA9,
-			0x11C81968, 0x4E734A41, 0xB3472DCA, 0x7B14A94A, 0x1B510052, 0x9A532915, 0xD60F573F, 0xBC9BC6E4, 0x2B60A476,
-			0x81E67400, 0x08BA6FB5, 0x571BE91F, 0xF296EC6B, 0x2A0DD915, 0xB6636521, 0xE7B9F9B6, 0xFF34052E, 0xC5855664,
-			0x53B02D5D, 0xA99F8FA1, 0x08BA4799, 0x6E85076A },
-
-	KS1 = { 0x4B7A70E9, 0xB5B32944, 0xDB75092E, 0xC4192623, 0xAD6EA6B0, 0x49A7DF7D, 0x9CEE60B8, 0x8FEDB266, 0xECAA8C71,
-			0x699A17FF, 0x5664526C, 0xC2B19EE1, 0x193602A5, 0x75094C29, 0xA0591340, 0xE4183A3E, 0x3F54989A, 0x5B429D65,
-			0x6B8FE4D6, 0x99F73FD6, 0xA1D29C07, 0xEFE830F5, 0x4D2D38E6, 0xF0255DC1, 0x4CDD2086, 0x8470EB26, 0x6382E9C6,
-			0x021ECC5E, 0x09686B3F, 0x3EBAEFC9, 0x3C971814, 0x6B6A70A1, 0x687F3584, 0x52A0E286, 0xB79C5305, 0xAA500737,
-			0x3E07841C, 0x7FDEAE5C, 0x8E7D44EC, 0x5716F2B8, 0xB03ADA37, 0xF0500C0D, 0xF01C1F04, 0x0200B3FF, 0xAE0CF51A,
-			0x3CB574B2, 0x25837A58, 0xDC0921BD, 0xD19113F9, 0x7CA92FF6, 0x94324773, 0x22F54701, 0x3AE5E581, 0x37C2DADC,
-			0xC8B57634, 0x9AF3DDA7, 0xA9446146, 0x0FD0030E, 0xECC8C73E, 0xA4751E41, 0xE238CD99, 0x3BEA0E2F, 0x3280BBA1,
-			0x183EB331, 0x4E548B38, 0x4F6DB908, 0x6F420D03, 0xF60A04BF, 0x2CB81290, 0x24977C79, 0x5679B072, 0xBCAF89AF,
-			0xDE9A771F, 0xD9930810, 0xB38BAE12, 0xDCCF3F2E, 0x5512721F, 0x2E6B7124, 0x501ADDE6, 0x9F84CD87, 0x7A584718,
-			0x7408DA17, 0xBC9F9ABC, 0xE94B7D8C, 0xEC7AEC3A, 0xDB851DFA, 0x63094366, 0xC464C3D2, 0xEF1C1847, 0x3215D908,
-			0xDD433B37, 0x24C2BA16, 0x12A14D43, 0x2A65C451, 0x50940002, 0x133AE4DD, 0x71DFF89E, 0x10314E55, 0x81AC77D6,
-			0x5F11199B, 0x043556F1, 0xD7A3C76B, 0x3C11183B, 0x5924A509, 0xF28FE6ED, 0x97F1FBFA, 0x9EBABF2C, 0x1E153C6E,
-			0x86E34570, 0xEAE96FB1, 0x860E5E0A, 0x5A3E2AB3, 0x771FE71C, 0x4E3D06FA, 0x2965DCB9, 0x99E71D0F, 0x803E89D6,
-			0x5266C825, 0x2E4CC978, 0x9C10B36A, 0xC6150EBA, 0x94E2EA78, 0xA5FC3C53, 0x1E0A2DF4, 0xF2F74EA7, 0x361D2B3D,
-			0x1939260F, 0x19C27960, 0x5223A708, 0xF71312B6, 0xEBADFE6E, 0xEAC31F66, 0xE3BC4595, 0xA67BC883, 0xB17F37D1,
-			0x018CFF28, 0xC332DDEF, 0xBE6C5AA5, 0x65582185, 0x68AB9802, 0xEECEA50F, 0xDB2F953B, 0x2AEF7DAD, 0x5B6E2F84,
-			0x1521B628, 0x29076170, 0xECDD4775, 0x619F1510, 0x13CCA830, 0xEB61BD96, 0x0334FE1E, 0xAA0363CF, 0xB5735C90,
-			0x4C70A239, 0xD59E9E0B, 0xCBAADE14, 0xEECC86BC, 0x60622CA7, 0x9CAB5CAB, 0xB2F3846E, 0x648B1EAF, 0x19BDF0CA,
-			0xA02369B9, 0x655ABB50, 0x40685A32, 0x3C2AB4B3, 0x319EE9D5, 0xC021B8F7, 0x9B540B19, 0x875FA099, 0x95F7997E,
-			0x623D7DA8, 0xF837889A, 0x97E32D77, 0x11ED935F, 0x16681281, 0x0E358829, 0xC7E61FD6, 0x96DEDFA1, 0x7858BA99,
-			0x57F584A5, 0x1B227263, 0x9B83C3FF, 0x1AC24696, 0xCDB30AEB, 0x532E3054, 0x8FD948E4, 0x6DBC3128, 0x58EBF2EF,
-			0x34C6FFEA, 0xFE28ED61, 0xEE7C3C73, 0x5D4A14D9, 0xE864B7E3, 0x42105D14, 0x203E13E0, 0x45EEE2B6, 0xA3AAABEA,
-			0xDB6C4F15, 0xFACB4FD0, 0xC742F442, 0xEF6ABBB5, 0x654F3B1D, 0x41CD2105, 0xD81E799E, 0x86854DC7, 0xE44B476A,
-			0x3D816250, 0xCF62A1F2, 0x5B8D2646, 0xFC8883A0, 0xC1C7B6A3, 0x7F1524C3, 0x69CB7492, 0x47848A0B, 0x5692B285,
-			0x095BBF00, 0xAD19489D, 0x1462B174, 0x23820E00, 0x58428D2A, 0x0C55F5EA, 0x1DADF43E, 0x233F7061, 0x3372F092,
-			0x8D937E41, 0xD65FECF1, 0x6C223BDB, 0x7CDE3759, 0xCBEE7460, 0x4085F2A7, 0xCE77326E, 0xA6078084, 0x19F8509E,
-			0xE8EFD855, 0x61D99735, 0xA969A7AA, 0xC50C06C2, 0x5A04ABFC, 0x800BCADC, 0x9E447A2E, 0xC3453484, 0xFDD56705,
-			0x0E1E9EC9, 0xDB73DBD3, 0x105588CD, 0x675FDA79, 0xE3674340, 0xC5C43465, 0x713E38D8, 0x3D28F89E, 0xF16DFF20,
-			0x153E21E7, 0x8FB03D4A, 0xE6E39F2B, 0xDB83ADF7 },
-
-	KS2 = { 0xE93D5A68, 0x948140F7, 0xF64C261C, 0x94692934, 0x411520F7, 0x7602D4F7, 0xBCF46B2E, 0xD4A20068, 0xD4082471,
-			0x3320F46A, 0x43B7D4B7, 0x500061AF, 0x1E39F62E, 0x97244546, 0x14214F74, 0xBF8B8840, 0x4D95FC1D, 0x96B591AF,
-			0x70F4DDD3, 0x66A02F45, 0xBFBC09EC, 0x03BD9785, 0x7FAC6DD0, 0x31CB8504, 0x96EB27B3, 0x55FD3941, 0xDA2547E6,
-			0xABCA0A9A, 0x28507825, 0x530429F4, 0x0A2C86DA, 0xE9B66DFB, 0x68DC1462, 0xD7486900, 0x680EC0A4, 0x27A18DEE,
-			0x4F3FFEA2, 0xE887AD8C, 0xB58CE006, 0x7AF4D6B6, 0xAACE1E7C, 0xD3375FEC, 0xCE78A399, 0x406B2A42, 0x20FE9E35,
-			0xD9F385B9, 0xEE39D7AB, 0x3B124E8B, 0x1DC9FAF7, 0x4B6D1856, 0x26A36631, 0xEAE397B2, 0x3A6EFA74, 0xDD5B4332,
-			0x6841E7F7, 0xCA7820FB, 0xFB0AF54E, 0xD8FEB397, 0x454056AC, 0xBA489527, 0x55533A3A, 0x20838D87, 0xFE6BA9B7,
-			0xD096954B, 0x55A867BC, 0xA1159A58, 0xCCA92963, 0x99E1DB33, 0xA62A4A56, 0x3F3125F9, 0x5EF47E1C, 0x9029317C,
-			0xFDF8E802, 0x04272F70, 0x80BB155C, 0x05282CE3, 0x95C11548, 0xE4C66D22, 0x48C1133F, 0xC70F86DC, 0x07F9C9EE,
-			0x41041F0F, 0x404779A4, 0x5D886E17, 0x325F51EB, 0xD59BC0D1, 0xF2BCC18F, 0x41113564, 0x257B7834, 0x602A9C60,
-			0xDFF8E8A3, 0x1F636C1B, 0x0E12B4C2, 0x02E1329E, 0xAF664FD1, 0xCAD18115, 0x6B2395E0, 0x333E92E1, 0x3B240B62,
-			0xEEBEB922, 0x85B2A20E, 0xE6BA0D99, 0xDE720C8C, 0x2DA2F728, 0xD0127845, 0x95B794FD, 0x647D0862, 0xE7CCF5F0,
-			0x5449A36F, 0x877D48FA, 0xC39DFD27, 0xF33E8D1E, 0x0A476341, 0x992EFF74, 0x3A6F6EAB, 0xF4F8FD37, 0xA812DC60,
-			0xA1EBDDF8, 0x991BE14C, 0xDB6E6B0D, 0xC67B5510, 0x6D672C37, 0x2765D43B, 0xDCD0E804, 0xF1290DC7, 0xCC00FFA3,
-			0xB5390F92, 0x690FED0B, 0x667B9FFB, 0xCEDB7D9C, 0xA091CF0B, 0xD9155EA3, 0xBB132F88, 0x515BAD24, 0x7B9479BF,
-			0x763BD6EB, 0x37392EB3, 0xCC115979, 0x8026E297, 0xF42E312D, 0x6842ADA7, 0xC66A2B3B, 0x12754CCC, 0x782EF11C,
-			0x6A124237, 0xB79251E7, 0x06A1BBE6, 0x4BFB6350, 0x1A6B1018, 0x11CAEDFA, 0x3D25BDD8, 0xE2E1C3C9, 0x44421659,
-			0x0A121386, 0xD90CEC6E, 0xD5ABEA2A, 0x64AF674E, 0xDA86A85F, 0xBEBFE988, 0x64E4C3FE, 0x9DBC8057, 0xF0F7C086,
-			0x60787BF8, 0x6003604D, 0xD1FD8346, 0xF6381FB0, 0x7745AE04, 0xD736FCCC, 0x83426B33, 0xF01EAB71, 0xB0804187,
-			0x3C005E5F, 0x77A057BE, 0xBDE8AE24, 0x55464299, 0xBF582E61, 0x4E58F48F, 0xF2DDFDA2, 0xF474EF38, 0x8789BDC2,
-			0x5366F9C3, 0xC8B38E74, 0xB475F255, 0x46FCD9B9, 0x7AEB2661, 0x8B1DDF84, 0x846A0E79, 0x915F95E2, 0x466E598E,
-			0x20B45770, 0x8CD55591, 0xC902DE4C, 0xB90BACE1, 0xBB8205D0, 0x11A86248, 0x7574A99E, 0xB77F19B6, 0xE0A9DC09,
-			0x662D09A1, 0xC4324633, 0xE85A1F02, 0x09F0BE8C, 0x4A99A025, 0x1D6EFE10, 0x1AB93D1D, 0x0BA5A4DF, 0xA186F20F,
-			0x2868F169, 0xDCB7DA83, 0x573906FE, 0xA1E2CE9B, 0x4FCD7F52, 0x50115E01, 0xA70683FA, 0xA002B5C4, 0x0DE6D027,
-			0x9AF88C27, 0x773F8641, 0xC3604C06, 0x61A806B5, 0xF0177A28, 0xC0F586E0, 0x006058AA, 0x30DC7D62, 0x11E69ED7,
-			0x2338EA63, 0x53C2DD94, 0xC2C21634, 0xBBCBEE56, 0x90BCB6DE, 0xEBFC7DA1, 0xCE591D76, 0x6F05E409, 0x4B7C0188,
-			0x39720A3D, 0x7C927C24, 0x86E3725F, 0x724D9DB9, 0x1AC15BB4, 0xD39EB8FC, 0xED545578, 0x08FCA5B5, 0xD83D7CD3,
-			0x4DAD0FC4, 0x1E50EF5E, 0xB161E6F8, 0xA28514D9, 0x6C51133C, 0x6FD5C7E7, 0x56E14EC4, 0x362ABFCE, 0xDDC6C837,
-			0xD79A3234, 0x92638212, 0x670EFA8E, 0x406000E0 },
-
-	KS3 = { 0x3A39CE37, 0xD3FAF5CF, 0xABC27737, 0x5AC52D1B, 0x5CB0679E, 0x4FA33742, 0xD3822740, 0x99BC9BBE, 0xD5118E9D,
-			0xBF0F7315, 0xD62D1C7E, 0xC700C47B, 0xB78C1B6B, 0x21A19045, 0xB26EB1BE, 0x6A366EB4, 0x5748AB2F, 0xBC946E79,
-			0xC6A376D2, 0x6549C2C8, 0x530FF8EE, 0x468DDE7D, 0xD5730A1D, 0x4CD04DC6, 0x2939BBDB, 0xA9BA4650, 0xAC9526E8,
-			0xBE5EE304, 0xA1FAD5F0, 0x6A2D519A, 0x63EF8CE2, 0x9A86EE22, 0xC089C2B8, 0x43242EF6, 0xA51E03AA, 0x9CF2D0A4,
-			0x83C061BA, 0x9BE96A4D, 0x8FE51550, 0xBA645BD6, 0x2826A2F9, 0xA73A3AE1, 0x4BA99586, 0xEF5562E9, 0xC72FEFD3,
-			0xF752F7DA, 0x3F046F69, 0x77FA0A59, 0x80E4A915, 0x87B08601, 0x9B09E6AD, 0x3B3EE593, 0xE990FD5A, 0x9E34D797,
-			0x2CF0B7D9, 0x022B8B51, 0x96D5AC3A, 0x017DA67D, 0xD1CF3ED6, 0x7C7D2D28, 0x1F9F25CF, 0xADF2B89B, 0x5AD6B472,
-			0x5A88F54C, 0xE029AC71, 0xE019A5E6, 0x47B0ACFD, 0xED93FA9B, 0xE8D3C48D, 0x283B57CC, 0xF8D56629, 0x79132E28,
-			0x785F0191, 0xED756055, 0xF7960E44, 0xE3D35E8C, 0x15056DD4, 0x88F46DBA, 0x03A16125, 0x0564F0BD, 0xC3EB9E15,
-			0x3C9057A2, 0x97271AEC, 0xA93A072A, 0x1B3F6D9B, 0x1E6321F5, 0xF59C66FB, 0x26DCF319, 0x7533D928, 0xB155FDF5,
-			0x03563482, 0x8ABA3CBB, 0x28517711, 0xC20AD9F8, 0xABCC5167, 0xCCAD925F, 0x4DE81751, 0x3830DC8E, 0x379D5862,
-			0x9320F991, 0xEA7A90C2, 0xFB3E7BCE, 0x5121CE64, 0x774FBE32, 0xA8B6E37E, 0xC3293D46, 0x48DE5369, 0x6413E680,
-			0xA2AE0810, 0xDD6DB224, 0x69852DFD, 0x09072166, 0xB39A460A, 0x6445C0DD, 0x586CDECF, 0x1C20C8AE, 0x5BBEF7DD,
-			0x1B588D40, 0xCCD2017F, 0x6BB4E3BB, 0xDDA26A7E, 0x3A59FF45, 0x3E350A44, 0xBCB4CDD5, 0x72EACEA8, 0xFA6484BB,
-			0x8D6612AE, 0xBF3C6F47, 0xD29BE463, 0x542F5D9E, 0xAEC2771B, 0xF64E6370, 0x740E0D8D, 0xE75B1357, 0xF8721671,
-			0xAF537D5D, 0x4040CB08, 0x4EB4E2CC, 0x34D2466A, 0x0115AF84, 0xE1B00428, 0x95983A1D, 0x06B89FB4, 0xCE6EA048,
-			0x6F3F3B82, 0x3520AB82, 0x011A1D4B, 0x277227F8, 0x611560B1, 0xE7933FDC, 0xBB3A792B, 0x344525BD, 0xA08839E1,
-			0x51CE794B, 0x2F32C9B7, 0xA01FBAC9, 0xE01CC87E, 0xBCC7D1F6, 0xCF0111C3, 0xA1E8AAC7, 0x1A908749, 0xD44FBD9A,
-			0xD0DADECB, 0xD50ADA38, 0x0339C32A, 0xC6913667, 0x8DF9317C, 0xE0B12B4F, 0xF79E59B7, 0x43F5BB3A, 0xF2D519FF,
-			0x27D9459C, 0xBF97222C, 0x15E6FC2A, 0x0F91FC71, 0x9B941525, 0xFAE59361, 0xCEB69CEB, 0xC2A86459, 0x12BAA8D1,
-			0xB6C1075E, 0xE3056A0C, 0x10D25065, 0xCB03A442, 0xE0EC6E0E, 0x1698DB3B, 0x4C98A0BE, 0x3278E964, 0x9F1F9532,
-			0xE0D392DF, 0xD3A0342B, 0x8971F21E, 0x1B0A7441, 0x4BA3348C, 0xC5BE7120, 0xC37632D8, 0xDF359F8D, 0x9B992F2E,
-			0xE60B6F47, 0x0FE3F11D, 0xE54CDA54, 0x1EDAD891, 0xCE6279CF, 0xCD3E7E6F, 0x1618B166, 0xFD2C1D05, 0x848FD2C5,
-			0xF6FB2299, 0xF523F357, 0xA6327623, 0x93A83531, 0x56CCCD02, 0xACF08162, 0x5A75EBB5, 0x6E163697, 0x88D273CC,
-			0xDE966292, 0x81B949D0, 0x4C50901B, 0x71C65614, 0xE6C6C7BD, 0x327A140A, 0x45E1D006, 0xC3F27B9A, 0xC9AA53FD,
-			0x62A80F00, 0xBB25BFE2, 0x35BDD2F6, 0x71126905, 0xB2040222, 0xB6CBCF7C, 0xCD769C2B, 0x53113EC0, 0x1640E3D3,
-			0x38ABBD60, 0x2547ADF0, 0xBA38209C, 0xF746CE76, 0x77AFA1C5, 0x20756060, 0x85CBFE4E, 0x8AE88DD8, 0x7AAAF9B0,
-			0x4CF9AA7E, 0x1948C25C, 0x02FB8A8C, 0x01C36AE4, 0xD6EBE1F9, 0x90D4F869, 0xA65CDEA0, 0x3F09252D, 0xC208E69F,
-			0xB74E6132, 0xCE77E25B, 0x578FDFE3, 0x3AC372E6 };
-
-	// ====================================
-	// Useful constants
-	// ====================================
-
-	private static final int ROUNDS = 16;
-	private static final int BLOCK_SIZE = 8; // bytes = 64 bits
-	private static final int SBOX_SK = 256;
-	private static final int P_SZ = ROUNDS + 2;
-
-	private final int[] S0, S1, S2, S3; // the s-boxes
-	private final int[] P; // the p-array
-
-	private boolean doEncrypt = false;
-
-	private byte[] workingKey = null;
-
-	public BlowFish()
-	{
-		S0 = new int[SBOX_SK];
-		S1 = new int[SBOX_SK];
-		S2 = new int[SBOX_SK];
-		S3 = new int[SBOX_SK];
-		P = new int[P_SZ];
-	}
-
-	/**
-	 * initialise a Blowfish cipher.
-	 * 
-	 * @param encrypting
-	 *            whether or not we are for encryption.
-	 * @param key
-	 *            the key required to set up the cipher.
-	 * @exception IllegalArgumentException
-	 *                if the params argument is inappropriate.
-	 */
-	public void init(boolean encrypting, byte[] key)
-	{
-		this.doEncrypt = encrypting;
-		this.workingKey = key;
-		setKey(this.workingKey);
-	}
-
-	public String getAlgorithmName()
-	{
-		return "Blowfish";
-	}
-
-	public final void transformBlock(byte[] in, int inOff, byte[] out, int outOff)
-	{
-		if (workingKey == null)
-		{
-			throw new IllegalStateException("Blowfish not initialised");
-		}
-
-		if (doEncrypt)
-		{
-			encryptBlock(in, inOff, out, outOff);
-		}
-		else
-		{
-			decryptBlock(in, inOff, out, outOff);
-		}
-	}
-
-	public void reset()
-	{
-	}
-
-	public int getBlockSize()
-	{
-		return BLOCK_SIZE;
-	}
-
-	// ==================================
-	// Private Implementation
-	// ==================================
-
-	private int F(int x)
-	{
-		return (((S0[(x >>> 24)] + S1[(x >>> 16) & 0xff]) ^ S2[(x >>> 8) & 0xff]) + S3[x & 0xff]);
-	}
-
-	/**
-	 * apply the encryption cycle to each value pair in the table.
-	 */
-	private void processTable(int xl, int xr, int[] table)
-	{
-		int size = table.length;
-
-		for (int s = 0; s < size; s += 2)
-		{
-			xl ^= P[0];
-
-			for (int i = 1; i < ROUNDS; i += 2)
-			{
-				xr ^= F(xl) ^ P[i];
-				xl ^= F(xr) ^ P[i + 1];
-			}
-
-			xr ^= P[ROUNDS + 1];
-
-			table[s] = xr;
-			table[s + 1] = xl;
-
-			xr = xl; // end of cycle swap
-			xl = table[s];
-		}
-	}
-
-	private void setKey(byte[] key)
-	{
-		/*
-		 * - comments are from _Applied Crypto_, Schneier, p338 please be
-		 * careful comparing the two, AC numbers the arrays from 1, the enclosed
-		 * code from 0.
-		 * 
-		 * (1) Initialise the S-boxes and the P-array, with a fixed string This
-		 * string contains the hexadecimal digits of pi (3.141...)
-		 */
-		System.arraycopy(KS0, 0, S0, 0, SBOX_SK);
-		System.arraycopy(KS1, 0, S1, 0, SBOX_SK);
-		System.arraycopy(KS2, 0, S2, 0, SBOX_SK);
-		System.arraycopy(KS3, 0, S3, 0, SBOX_SK);
-
-		System.arraycopy(KP, 0, P, 0, P_SZ);
-
-		/*
-		 * (2) Now, XOR P[0] with the first 32 bits of the key, XOR P[1] with
-		 * the second 32-bits of the key, and so on for all bits of the key (up
-		 * to P[17]). Repeatedly cycle through the key bits until the entire
-		 * P-array has been XOR-ed with the key bits
-		 */
-		int keyLength = key.length;
-		int keyIndex = 0;
-
-		for (int i = 0; i < P_SZ; i++)
-		{
-			// get the 32 bits of the key, in 4 * 8 bit chunks
-			int data = 0x0000000;
-			for (int j = 0; j < 4; j++)
-			{
-				// create a 32 bit block
-				data = (data << 8) | (key[keyIndex++] & 0xff);
-
-				// wrap when we get to the end of the key
-				if (keyIndex >= keyLength)
-				{
-					keyIndex = 0;
-				}
-			}
-			// XOR the newly created 32 bit chunk onto the P-array
-			P[i] ^= data;
-		}
-
-		/*
-		 * (3) Encrypt the all-zero string with the Blowfish algorithm, using
-		 * the subkeys described in (1) and (2)
-		 * 
-		 * (4) Replace P1 and P2 with the output of step (3)
-		 * 
-		 * (5) Encrypt the output of step(3) using the Blowfish algorithm, with
-		 * the modified subkeys.
-		 * 
-		 * (6) Replace P3 and P4 with the output of step (5)
-		 * 
-		 * (7) Continue the process, replacing all elements of the P-array and
-		 * then all four S-boxes in order, with the output of the continuously
-		 * changing Blowfish algorithm
-		 */
-
-		processTable(0, 0, P);
-		processTable(P[P_SZ - 2], P[P_SZ - 1], S0);
-		processTable(S0[SBOX_SK - 2], S0[SBOX_SK - 1], S1);
-		processTable(S1[SBOX_SK - 2], S1[SBOX_SK - 1], S2);
-		processTable(S2[SBOX_SK - 2], S2[SBOX_SK - 1], S3);
-	}
-
-	/**
-	 * Encrypt the given input starting at the given offset and place the result
-	 * in the provided buffer starting at the given offset. The input will be an
-	 * exact multiple of our blocksize.
-	 */
-	private void encryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)
-	{
-		int xl = BytesTo32bits(src, srcIndex);
-		int xr = BytesTo32bits(src, srcIndex + 4);
-
-		xl ^= P[0];
-
-		for (int i = 1; i < ROUNDS; i += 2)
-		{
-			xr ^= F(xl) ^ P[i];
-			xl ^= F(xr) ^ P[i + 1];
-		}
-
-		xr ^= P[ROUNDS + 1];
-
-		Bits32ToBytes(xr, dst, dstIndex);
-		Bits32ToBytes(xl, dst, dstIndex + 4);
-	}
-
-	/**
-	 * Decrypt the given input starting at the given offset and place the result
-	 * in the provided buffer starting at the given offset. The input will be an
-	 * exact multiple of our blocksize.
-	 */
-	private void decryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)
-	{
-		int xl = BytesTo32bits(src, srcIndex);
-		int xr = BytesTo32bits(src, srcIndex + 4);
-
-		xl ^= P[ROUNDS + 1];
-
-		for (int i = ROUNDS; i > 0; i -= 2)
-		{
-			xr ^= F(xl) ^ P[i];
-			xl ^= F(xr) ^ P[i - 1];
-		}
-
-		xr ^= P[0];
-
-		Bits32ToBytes(xr, dst, dstIndex);
-		Bits32ToBytes(xl, dst, dstIndex + 4);
-	}
-
-	private int BytesTo32bits(byte[] b, int i)
-	{
-		return ((b[i] & 0xff) << 24) | ((b[i + 1] & 0xff) << 16) | ((b[i + 2] & 0xff) << 8) | ((b[i + 3] & 0xff));
-	}
-
-	private void Bits32ToBytes(int in, byte[] b, int offset)
-	{
-		b[offset + 3] = (byte) in;
-		b[offset + 2] = (byte) (in >> 8);
-		b[offset + 1] = (byte) (in >> 16);
-		b[offset] = (byte) (in >> 24);
-	}
-
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/CBCMode.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/CBCMode.java
deleted file mode 100644
index 0ae51b3..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/CBCMode.java
+++ /dev/null
@@ -1,78 +0,0 @@
-package com.trilead.ssh2.crypto.cipher;
-
-/**
- * CBCMode.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CBCMode.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class CBCMode implements BlockCipher
-{
-	BlockCipher tc;
-	int blockSize;
-	boolean doEncrypt;
-
-	byte[] cbc_vector;
-	byte[] tmp_vector;
-
-	public void init(boolean forEncryption, byte[] key)
-	{
-	}
-	
-	public CBCMode(BlockCipher tc, byte[] iv, boolean doEncrypt)
-			throws IllegalArgumentException
-	{
-		this.tc = tc;
-		this.blockSize = tc.getBlockSize();
-		this.doEncrypt = doEncrypt;
-
-		if (this.blockSize != iv.length)
-			throw new IllegalArgumentException("IV must be " + blockSize
-					+ " bytes long! (currently " + iv.length + ")");
-
-		this.cbc_vector = new byte[blockSize];
-		this.tmp_vector = new byte[blockSize];
-		System.arraycopy(iv, 0, cbc_vector, 0, blockSize);
-	}
-
-	public int getBlockSize()
-	{
-		return blockSize;
-	}
-
-	private void encryptBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
-	{
-		for (int i = 0; i < blockSize; i++)
-			cbc_vector[i] ^= src[srcoff + i];
-
-		tc.transformBlock(cbc_vector, 0, dst, dstoff);
-
-		System.arraycopy(dst, dstoff, cbc_vector, 0, blockSize);
-	}
-
-	private void decryptBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
-	{
-		/* Assume the worst, src and dst are overlapping... */
-		
-		System.arraycopy(src, srcoff, tmp_vector, 0, blockSize);
-		
-		tc.transformBlock(src, srcoff, dst, dstoff);
-		
-		for (int i = 0; i < blockSize; i++)
-			dst[dstoff + i] ^= cbc_vector[i];
-
-		/* ...that is why we need a tmp buffer. */
-		
-		byte[] swap = cbc_vector;
-		cbc_vector = tmp_vector;
-		tmp_vector = swap;
-	}
-
-	public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
-	{
-		if (doEncrypt)
-			encryptBlock(src, srcoff, dst, dstoff);
-		else
-			decryptBlock(src, srcoff, dst, dstoff);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/CTRMode.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/CTRMode.java
deleted file mode 100644
index 8541c8d..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/CTRMode.java
+++ /dev/null
@@ -1,62 +0,0 @@
-
-package com.trilead.ssh2.crypto.cipher;
-
-/**
- * This is CTR mode as described in draft-ietf-secsh-newmodes-XY.txt
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CTRMode.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class CTRMode implements BlockCipher
-{
-	byte[] X;
-	byte[] Xenc;
-
-	BlockCipher bc;
-	int blockSize;
-	boolean doEncrypt;
-
-	int count = 0;
-
-	public void init(boolean forEncryption, byte[] key)
-	{
-	}
-
-	public CTRMode(BlockCipher tc, byte[] iv, boolean doEnc) throws IllegalArgumentException
-	{
-		bc = tc;
-		blockSize = bc.getBlockSize();
-		doEncrypt = doEnc;
-
-		if (blockSize != iv.length)
-			throw new IllegalArgumentException("IV must be " + blockSize + " bytes long! (currently " + iv.length + ")");
-
-		X = new byte[blockSize];
-		Xenc = new byte[blockSize];
-
-		System.arraycopy(iv, 0, X, 0, blockSize);
-	}
-
-	public final int getBlockSize()
-	{
-		return blockSize;
-	}
-
-	public final void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
-	{
-		bc.transformBlock(X, 0, Xenc, 0);
-
-		for (int i = 0; i < blockSize; i++)
-		{
-			dst[dstoff + i] = (byte) (src[srcoff + i] ^ Xenc[i]);
-		}
-
-		for (int i = (blockSize - 1); i >= 0; i--)
-		{
-			X[i]++;
-			if (X[i] != 0)
-				break;
-
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/CipherInputStream.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/CipherInputStream.java
deleted file mode 100644
index c9055ab..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/CipherInputStream.java
+++ /dev/null
@@ -1,144 +0,0 @@
-
-package com.trilead.ssh2.crypto.cipher;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * CipherInputStream.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CipherInputStream.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class CipherInputStream
-{
-	BlockCipher currentCipher;
-	InputStream bi;
-	byte[] buffer;
-	byte[] enc;
-	int blockSize;
-	int pos;
-
-	/*
-	 * We cannot use java.io.BufferedInputStream, since that is not available in
-	 * J2ME. Everything could be improved alot here.
-	 */
-
-	final int BUFF_SIZE = 2048;
-	byte[] input_buffer = new byte[BUFF_SIZE];
-	int input_buffer_pos = 0;
-	int input_buffer_size = 0;
-
-	public CipherInputStream(BlockCipher tc, InputStream bi)
-	{
-		this.bi = bi;
-		changeCipher(tc);
-	}
-
-	private int fill_buffer() throws IOException
-	{
-		input_buffer_pos = 0;
-		input_buffer_size = bi.read(input_buffer, 0, BUFF_SIZE);
-		return input_buffer_size;
-	}
-
-	private int internal_read(byte[] b, int off, int len) throws IOException
-	{
-		if (input_buffer_size < 0)
-			return -1;
-
-		if (input_buffer_pos >= input_buffer_size)
-		{
-			if (fill_buffer() <= 0)
-				return -1;
-		}
-		
-		int avail = input_buffer_size - input_buffer_pos;
-		int thiscopy = (len > avail) ? avail : len;
-
-		System.arraycopy(input_buffer, input_buffer_pos, b, off, thiscopy);
-		input_buffer_pos += thiscopy;
-
-		return thiscopy;
-	}
-
-	public void changeCipher(BlockCipher bc)
-	{
-		this.currentCipher = bc;
-		blockSize = bc.getBlockSize();
-		buffer = new byte[blockSize];
-		enc = new byte[blockSize];
-		pos = blockSize;
-	}
-
-	private void getBlock() throws IOException
-	{
-		int n = 0;
-		while (n < blockSize)
-		{
-			int len = internal_read(enc, n, blockSize - n);
-			if (len < 0)
-				throw new IOException("Cannot read full block, EOF reached.");
-			n += len;
-		}
-
-		try
-		{
-			currentCipher.transformBlock(enc, 0, buffer, 0);
-		}
-		catch (Exception e)
-		{
-			throw new IOException("Error while decrypting block.");
-		}
-		pos = 0;
-	}
-
-	public int read(byte[] dst) throws IOException
-	{
-		return read(dst, 0, dst.length);
-	}
-
-	public int read(byte[] dst, int off, int len) throws IOException
-	{
-		int count = 0;
-
-		while (len > 0)
-		{
-			if (pos >= blockSize)
-				getBlock();
-
-			int avail = blockSize - pos;
-			int copy = Math.min(avail, len);
-			System.arraycopy(buffer, pos, dst, off, copy);
-			pos += copy;
-			off += copy;
-			len -= copy;
-			count += copy;
-		}
-		return count;
-	}
-
-	public int read() throws IOException
-	{
-		if (pos >= blockSize)
-		{
-			getBlock();
-		}
-		return buffer[pos++] & 0xff;
-	}
-
-	public int readPlain(byte[] b, int off, int len) throws IOException
-	{
-		if (pos != blockSize)
-			throw new IOException("Cannot read plain since crypto buffer is not aligned.");
-		int n = 0;
-		while (n < len)
-		{
-			int cnt = internal_read(b, off + n, len - n);
-			if (cnt < 0)
-				throw new IOException("Cannot fill buffer, EOF reached.");
-			n += cnt;
-		}
-		return n;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java
deleted file mode 100644
index cf0db4a..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java
+++ /dev/null
@@ -1,142 +0,0 @@
-
-package com.trilead.ssh2.crypto.cipher;
-
-import java.io.IOException;
-import java.io.OutputStream;
-
-/**
- * CipherOutputStream.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: CipherOutputStream.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class CipherOutputStream
-{
-	BlockCipher currentCipher;
-	OutputStream bo;
-	byte[] buffer;
-	byte[] enc;
-	int blockSize;
-	int pos;
-
-	/*
-	 * We cannot use java.io.BufferedOutputStream, since that is not available
-	 * in J2ME. Everything could be improved here alot.
-	 */
-
-	final int BUFF_SIZE = 2048;
-	byte[] out_buffer = new byte[BUFF_SIZE];
-	int out_buffer_pos = 0;
-
-	public CipherOutputStream(BlockCipher tc, OutputStream bo)
-	{
-		this.bo = bo;
-		changeCipher(tc);
-	}
-
-	private void internal_write(byte[] src, int off, int len) throws IOException
-	{
-		while (len > 0)
-		{
-			int space = BUFF_SIZE - out_buffer_pos;
-			int copy = (len > space) ? space : len;
-
-			System.arraycopy(src, off, out_buffer, out_buffer_pos, copy);
-
-			off += copy;
-			out_buffer_pos += copy;
-			len -= copy;
-
-			if (out_buffer_pos >= BUFF_SIZE)
-			{
-				bo.write(out_buffer, 0, BUFF_SIZE);
-				out_buffer_pos = 0;
-			}
-		}
-	}
-
-	private void internal_write(int b) throws IOException
-	{
-		out_buffer[out_buffer_pos++] = (byte) b;
-		if (out_buffer_pos >= BUFF_SIZE)
-		{
-			bo.write(out_buffer, 0, BUFF_SIZE);
-			out_buffer_pos = 0;
-		}
-	}
-
-	public void flush() throws IOException
-	{
-		if (pos != 0)
-			throw new IOException("FATAL: cannot flush since crypto buffer is not aligned.");
-
-		if (out_buffer_pos > 0)
-		{
-			bo.write(out_buffer, 0, out_buffer_pos);
-			out_buffer_pos = 0;
-		}
-		bo.flush();
-	}
-
-	public void changeCipher(BlockCipher bc)
-	{
-		this.currentCipher = bc;
-		blockSize = bc.getBlockSize();
-		buffer = new byte[blockSize];
-		enc = new byte[blockSize];
-		pos = 0;
-	}
-
-	private void writeBlock() throws IOException
-	{
-		try
-		{
-			currentCipher.transformBlock(buffer, 0, enc, 0);
-		}
-		catch (Exception e)
-		{
-			throw (IOException) new IOException("Error while decrypting block.").initCause(e);
-		}
-
-		internal_write(enc, 0, blockSize);
-		pos = 0;
-	}
-
-	public void write(byte[] src, int off, int len) throws IOException
-	{
-		while (len > 0)
-		{
-			int avail = blockSize - pos;
-			int copy = Math.min(avail, len);
-
-			System.arraycopy(src, off, buffer, pos, copy);
-			pos += copy;
-			off += copy;
-			len -= copy;
-
-			if (pos >= blockSize)
-				writeBlock();
-		}
-	}
-
-	public void write(int b) throws IOException
-	{
-		buffer[pos++] = (byte) b;
-		if (pos >= blockSize)
-			writeBlock();
-	}
-
-	public void writePlain(int b) throws IOException
-	{
-		if (pos != 0)
-			throw new IOException("Cannot write plain since crypto buffer is not aligned.");
-		internal_write(b);
-	}
-
-	public void writePlain(byte[] b, int off, int len) throws IOException
-	{
-		if (pos != 0)
-			throw new IOException("Cannot write plain since crypto buffer is not aligned.");
-		internal_write(b, off, len);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/DES.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/DES.java
deleted file mode 100644
index 6588459..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/DES.java
+++ /dev/null
@@ -1,373 +0,0 @@
-
-package com.trilead.ssh2.crypto.cipher;
-
-/*
- This file is based on the 3DES implementation from the Bouncy Castle Crypto package.
- Their licence file states the following:
-
- Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle
- (http://www.bouncycastle.org)
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE. 
- */
-
-/**
- * DES.
- * 
- * @author See comments in the source file
- * @version $Id: DES.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- * 
- */
-public class DES implements BlockCipher
-{
-	private int[] workingKey = null;
-
-	/**
-	 * standard constructor.
-	 */
-	public DES()
-	{
-	}
-
-	/**
-	 * initialise a DES cipher.
-	 * 
-	 * @param encrypting
-	 *            whether or not we are for encryption.
-	 * @param key
-	 *            the parameters required to set up the cipher.
-	 * @exception IllegalArgumentException
-	 *                if the params argument is inappropriate.
-	 */
-	public void init(boolean encrypting, byte[] key)
-	{
-		this.workingKey = generateWorkingKey(encrypting, key, 0);
-	}
-
-	public String getAlgorithmName()
-	{
-		return "DES";
-	}
-
-	public int getBlockSize()
-	{
-		return 8;
-	}
-
-	public void transformBlock(byte[] in, int inOff, byte[] out, int outOff)
-	{
-		if (workingKey == null)
-		{
-			throw new IllegalStateException("DES engine not initialised!");
-		}
-
-		desFunc(workingKey, in, inOff, out, outOff);
-	}
-
-	public void reset()
-	{
-	}
-
-	/**
-	 * what follows is mainly taken from "Applied Cryptography", by Bruce
-	 * Schneier, however it also bears great resemblance to Richard
-	 * Outerbridge's D3DES...
-	 */
-
-	static short[] Df_Key = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32,
-			0x10, 0x89, 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67 };
-
-	static short[] bytebit = { 0200, 0100, 040, 020, 010, 04, 02, 01 };
-
-	static int[] bigbyte = { 0x800000, 0x400000, 0x200000, 0x100000, 0x80000, 0x40000, 0x20000, 0x10000, 0x8000,
-			0x4000, 0x2000, 0x1000, 0x800, 0x400, 0x200, 0x100, 0x80, 0x40, 0x20, 0x10, 0x8, 0x4, 0x2, 0x1 };
-
-	/*
-	 * Use the key schedule specified in the Standard (ANSI X3.92-1981).
-	 */
-
-	static byte[] pc1 = { 56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2,
-			59, 51, 43, 35, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 60, 52, 44, 36, 28, 20, 12,
-			4, 27, 19, 11, 3 };
-
-	static byte[] totrot = { 1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28 };
-
-	static byte[] pc2 = { 13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9, 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1, 40,
-			51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47, 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31 };
-
-	static int[] SP1 = { 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404, 0x00000004,
-			0x00010000, 0x00000400, 0x01010400, 0x01010404, 0x00000400, 0x01000404, 0x01010004, 0x01000000, 0x00000004,
-			0x00000404, 0x01000400, 0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404, 0x00010004,
-			0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404, 0x00010404, 0x01000000, 0x00010000, 0x01010404,
-			0x00000004, 0x01010000, 0x01010400, 0x01000000, 0x01000000, 0x00000400, 0x01010004, 0x00010000, 0x00010400,
-			0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404, 0x01010404, 0x00010004, 0x01010000, 0x01000404,
-			0x01000004, 0x00000404, 0x00010404, 0x01010400, 0x00000404, 0x01000400, 0x01000400, 0x00000000, 0x00010004,
-			0x00010400, 0x00000000, 0x01010004 };
-
-	static int[] SP2 = { 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020, 0x80100020,
-			0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000, 0x80008000, 0x00100000, 0x00000020, 0x80100020,
-			0x00108000, 0x00100020, 0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000, 0x00100020,
-			0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000, 0x80100000, 0x00008020, 0x00000000, 0x00108020,
-			0x80100020, 0x00100000, 0x80008020, 0x80100000, 0x80108000, 0x00008000, 0x80100000, 0x80008000, 0x00000020,
-			0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000, 0x00008020, 0x80108000, 0x00100000, 0x80000020,
-			0x00100020, 0x80008020, 0x80000020, 0x00100020, 0x00108000, 0x00000000, 0x80008000, 0x00008020, 0x80000000,
-			0x80100020, 0x80108020, 0x00108000 };
-
-	static int[] SP3 = { 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000, 0x00020208,
-			0x08000200, 0x00020008, 0x08000008, 0x08000008, 0x00020000, 0x08020208, 0x00020008, 0x08020000, 0x00000208,
-			0x08000000, 0x00000008, 0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208, 0x08000208,
-			0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208, 0x00000200, 0x08000000, 0x08020200, 0x08000000,
-			0x00020008, 0x00000208, 0x00020000, 0x08020200, 0x08000200, 0x00000000, 0x00000200, 0x00020008, 0x08020208,
-			0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008, 0x08000208, 0x00020000, 0x08000000, 0x08020208,
-			0x00000008, 0x00020208, 0x00020200, 0x08000008, 0x08020000, 0x08000208, 0x00000208, 0x08020000, 0x00020208,
-			0x00000008, 0x08020008, 0x00020200 };
-
-	static int[] SP4 = { 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081, 0x00800001,
-			0x00002001, 0x00000000, 0x00802000, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00800080, 0x00800001,
-			0x00000001, 0x00002000, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080, 0x00800081,
-			0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080, 0x00802081, 0x00000081, 0x00800080, 0x00800001,
-			0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00000000, 0x00802000, 0x00002080, 0x00800080, 0x00800081,
-			0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802081, 0x00000081, 0x00000001, 0x00002000,
-			0x00800001, 0x00002001, 0x00802080, 0x00800081, 0x00002001, 0x00002080, 0x00800000, 0x00802001, 0x00000080,
-			0x00800000, 0x00002000, 0x00802080 };
-
-	static int[] SP5 = { 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100, 0x40000000,
-			0x02080000, 0x40080100, 0x00080000, 0x02000100, 0x40080100, 0x42000100, 0x42080000, 0x00080100, 0x40000000,
-			0x02000000, 0x40080000, 0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100, 0x42080000,
-			0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000, 0x42000000, 0x00080100, 0x00080000, 0x42000100,
-			0x00000100, 0x02000000, 0x40000000, 0x02080000, 0x42000100, 0x40080100, 0x02000100, 0x40000000, 0x42080000,
-			0x02080100, 0x40080100, 0x00000100, 0x02000000, 0x42080000, 0x42080100, 0x00080100, 0x42000000, 0x42080100,
-			0x02080000, 0x00000000, 0x40080000, 0x42000000, 0x00080100, 0x02000100, 0x40000100, 0x00080000, 0x00000000,
-			0x40080000, 0x02080100, 0x40000100 };
-
-	static int[] SP6 = { 0x20000010, 0x20400000, 0x00004000, 0x20404010, 0x20400000, 0x00000010, 0x20404010,
-			0x00400000, 0x20004000, 0x00404010, 0x00400000, 0x20000010, 0x00400010, 0x20004000, 0x20000000, 0x00004010,
-			0x00000000, 0x00400010, 0x20004010, 0x00004000, 0x00404000, 0x20004010, 0x00000010, 0x20400010, 0x20400010,
-			0x00000000, 0x00404010, 0x20404000, 0x00004010, 0x00404000, 0x20404000, 0x20000000, 0x20004000, 0x00000010,
-			0x20400010, 0x00404000, 0x20404010, 0x00400000, 0x00004010, 0x20000010, 0x00400000, 0x20004000, 0x20000000,
-			0x00004010, 0x20000010, 0x20404010, 0x00404000, 0x20400000, 0x00404010, 0x20404000, 0x00000000, 0x20400010,
-			0x00000010, 0x00004000, 0x20400000, 0x00404010, 0x00004000, 0x00400010, 0x20004010, 0x00000000, 0x20404000,
-			0x20000000, 0x00400010, 0x20004010 };
-
-	static int[] SP7 = { 0x00200000, 0x04200002, 0x04000802, 0x00000000, 0x00000800, 0x04000802, 0x00200802,
-			0x04200800, 0x04200802, 0x00200000, 0x00000000, 0x04000002, 0x00000002, 0x04000000, 0x04200002, 0x00000802,
-			0x04000800, 0x00200802, 0x00200002, 0x04000800, 0x04000002, 0x04200000, 0x04200800, 0x00200002, 0x04200000,
-			0x00000800, 0x00000802, 0x04200802, 0x00200800, 0x00000002, 0x04000000, 0x00200800, 0x04000000, 0x00200800,
-			0x00200000, 0x04000802, 0x04000802, 0x04200002, 0x04200002, 0x00000002, 0x00200002, 0x04000000, 0x04000800,
-			0x00200000, 0x04200800, 0x00000802, 0x00200802, 0x04200800, 0x00000802, 0x04000002, 0x04200802, 0x04200000,
-			0x00200800, 0x00000000, 0x00000002, 0x04200802, 0x00000000, 0x00200802, 0x04200000, 0x00000800, 0x04000002,
-			0x04000800, 0x00000800, 0x00200002 };
-
-	static int[] SP8 = { 0x10001040, 0x00001000, 0x00040000, 0x10041040, 0x10000000, 0x10001040, 0x00000040,
-			0x10000000, 0x00040040, 0x10040000, 0x10041040, 0x00041000, 0x10041000, 0x00041040, 0x00001000, 0x00000040,
-			0x10040000, 0x10000040, 0x10001000, 0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000, 0x00001040,
-			0x00000000, 0x00000000, 0x10040040, 0x10000040, 0x10001000, 0x00041040, 0x00040000, 0x00041040, 0x00040000,
-			0x10041000, 0x00001000, 0x00000040, 0x10040040, 0x00001000, 0x00041040, 0x10001000, 0x00000040, 0x10000040,
-			0x10040000, 0x10040040, 0x10000000, 0x00040000, 0x10001040, 0x00000000, 0x10041040, 0x00040040, 0x10000040,
-			0x10040000, 0x10001000, 0x10001040, 0x00000000, 0x10041040, 0x00041000, 0x00041000, 0x00001040, 0x00001040,
-			0x00040040, 0x10000000, 0x10041000 };
-
-	/**
-	 * generate an integer based working key based on our secret key and what we
-	 * processing we are planning to do.
-	 * 
-	 * Acknowledgements for this routine go to James Gillogly & Phil Karn.
-	 * (whoever, and wherever they are!).
-	 */
-	protected int[] generateWorkingKey(boolean encrypting, byte[] key, int off)
-	{
-		int[] newKey = new int[32];
-		boolean[] pc1m = new boolean[56], pcr = new boolean[56];
-
-		for (int j = 0; j < 56; j++)
-		{
-			int l = pc1[j];
-
-			pc1m[j] = ((key[off + (l >>> 3)] & bytebit[l & 07]) != 0);
-		}
-
-		for (int i = 0; i < 16; i++)
-		{
-			int l, m, n;
-
-			if (encrypting)
-			{
-				m = i << 1;
-			}
-			else
-			{
-				m = (15 - i) << 1;
-			}
-
-			n = m + 1;
-			newKey[m] = newKey[n] = 0;
-
-			for (int j = 0; j < 28; j++)
-			{
-				l = j + totrot[i];
-				if (l < 28)
-				{
-					pcr[j] = pc1m[l];
-				}
-				else
-				{
-					pcr[j] = pc1m[l - 28];
-				}
-			}
-
-			for (int j = 28; j < 56; j++)
-			{
-				l = j + totrot[i];
-				if (l < 56)
-				{
-					pcr[j] = pc1m[l];
-				}
-				else
-				{
-					pcr[j] = pc1m[l - 28];
-				}
-			}
-
-			for (int j = 0; j < 24; j++)
-			{
-				if (pcr[pc2[j]])
-				{
-					newKey[m] |= bigbyte[j];
-				}
-
-				if (pcr[pc2[j + 24]])
-				{
-					newKey[n] |= bigbyte[j];
-				}
-			}
-		}
-
-		//
-		// store the processed key
-		//
-		for (int i = 0; i != 32; i += 2)
-		{
-			int i1, i2;
-
-			i1 = newKey[i];
-			i2 = newKey[i + 1];
-
-			newKey[i] = ((i1 & 0x00fc0000) << 6) | ((i1 & 0x00000fc0) << 10) | ((i2 & 0x00fc0000) >>> 10)
-					| ((i2 & 0x00000fc0) >>> 6);
-
-			newKey[i + 1] = ((i1 & 0x0003f000) << 12) | ((i1 & 0x0000003f) << 16) | ((i2 & 0x0003f000) >>> 4)
-					| (i2 & 0x0000003f);
-		}
-
-		return newKey;
-	}
-
-	/**
-	 * the DES engine.
-	 */
-	protected void desFunc(int[] wKey, byte[] in, int inOff, byte[] out, int outOff)
-	{
-		int work, right, left;
-
-		left = (in[inOff + 0] & 0xff) << 24;
-		left |= (in[inOff + 1] & 0xff) << 16;
-		left |= (in[inOff + 2] & 0xff) << 8;
-		left |= (in[inOff + 3] & 0xff);
-
-		right = (in[inOff + 4] & 0xff) << 24;
-		right |= (in[inOff + 5] & 0xff) << 16;
-		right |= (in[inOff + 6] & 0xff) << 8;
-		right |= (in[inOff + 7] & 0xff);
-
-		work = ((left >>> 4) ^ right) & 0x0f0f0f0f;
-		right ^= work;
-		left ^= (work << 4);
-		work = ((left >>> 16) ^ right) & 0x0000ffff;
-		right ^= work;
-		left ^= (work << 16);
-		work = ((right >>> 2) ^ left) & 0x33333333;
-		left ^= work;
-		right ^= (work << 2);
-		work = ((right >>> 8) ^ left) & 0x00ff00ff;
-		left ^= work;
-		right ^= (work << 8);
-		right = ((right << 1) | ((right >>> 31) & 1)) & 0xffffffff;
-		work = (left ^ right) & 0xaaaaaaaa;
-		left ^= work;
-		right ^= work;
-		left = ((left << 1) | ((left >>> 31) & 1)) & 0xffffffff;
-
-		for (int round = 0; round < 8; round++)
-		{
-			int fval;
-
-			work = (right << 28) | (right >>> 4);
-			work ^= wKey[round * 4 + 0];
-			fval = SP7[work & 0x3f];
-			fval |= SP5[(work >>> 8) & 0x3f];
-			fval |= SP3[(work >>> 16) & 0x3f];
-			fval |= SP1[(work >>> 24) & 0x3f];
-			work = right ^ wKey[round * 4 + 1];
-			fval |= SP8[work & 0x3f];
-			fval |= SP6[(work >>> 8) & 0x3f];
-			fval |= SP4[(work >>> 16) & 0x3f];
-			fval |= SP2[(work >>> 24) & 0x3f];
-			left ^= fval;
-			work = (left << 28) | (left >>> 4);
-			work ^= wKey[round * 4 + 2];
-			fval = SP7[work & 0x3f];
-			fval |= SP5[(work >>> 8) & 0x3f];
-			fval |= SP3[(work >>> 16) & 0x3f];
-			fval |= SP1[(work >>> 24) & 0x3f];
-			work = left ^ wKey[round * 4 + 3];
-			fval |= SP8[work & 0x3f];
-			fval |= SP6[(work >>> 8) & 0x3f];
-			fval |= SP4[(work >>> 16) & 0x3f];
-			fval |= SP2[(work >>> 24) & 0x3f];
-			right ^= fval;
-		}
-
-		right = (right << 31) | (right >>> 1);
-		work = (left ^ right) & 0xaaaaaaaa;
-		left ^= work;
-		right ^= work;
-		left = (left << 31) | (left >>> 1);
-		work = ((left >>> 8) ^ right) & 0x00ff00ff;
-		right ^= work;
-		left ^= (work << 8);
-		work = ((left >>> 2) ^ right) & 0x33333333;
-		right ^= work;
-		left ^= (work << 2);
-		work = ((right >>> 16) ^ left) & 0x0000ffff;
-		left ^= work;
-		right ^= (work << 16);
-		work = ((right >>> 4) ^ left) & 0x0f0f0f0f;
-		left ^= work;
-		right ^= (work << 4);
-
-		out[outOff + 0] = (byte) ((right >>> 24) & 0xff);
-		out[outOff + 1] = (byte) ((right >>> 16) & 0xff);
-		out[outOff + 2] = (byte) ((right >>> 8) & 0xff);
-		out[outOff + 3] = (byte) (right & 0xff);
-		out[outOff + 4] = (byte) ((left >>> 24) & 0xff);
-		out[outOff + 5] = (byte) ((left >>> 16) & 0xff);
-		out[outOff + 6] = (byte) ((left >>> 8) & 0xff);
-		out[outOff + 7] = (byte) (left & 0xff);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java
deleted file mode 100644
index f47a636..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java
+++ /dev/null
@@ -1,105 +0,0 @@
-
-package com.trilead.ssh2.crypto.cipher;
-
-/*
- This file was shamelessly taken (and modified) from the Bouncy Castle Crypto package.
- Their licence file states the following:
-
- Copyright (c) 2000 - 2004 The Legion Of The Bouncy Castle
- (http://www.bouncycastle.org)
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE. 
- */
-
-/**
- * DESede.
- * 
- * @author See comments in the source file
- * @version $Id: DESede.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- * 
- */
-public class DESede extends DES
-{
-	private int[] key1 = null;
-	private int[] key2 = null;
-	private int[] key3 = null;
-
-	private boolean encrypt;
-
-	/**
-	 * standard constructor.
-	 */
-	public DESede()
-	{
-	}
-
-	/**
-	 * initialise a DES cipher.
-	 * 
-	 * @param encrypting
-	 *            whether or not we are for encryption.
-	 * @param key
-	 *            the parameters required to set up the cipher.
-	 * @exception IllegalArgumentException
-	 *                if the params argument is inappropriate.
-	 */
-	public void init(boolean encrypting, byte[] key)
-	{
-		key1 = generateWorkingKey(encrypting, key, 0);
-		key2 = generateWorkingKey(!encrypting, key, 8);
-		key3 = generateWorkingKey(encrypting, key, 16);
-
-		encrypt = encrypting;
-	}
-
-	public String getAlgorithmName()
-	{
-		return "DESede";
-	}
-
-	public int getBlockSize()
-	{
-		return 8;
-	}
-
-	public void transformBlock(byte[] in, int inOff, byte[] out, int outOff)
-	{
-		if (key1 == null)
-		{
-			throw new IllegalStateException("DESede engine not initialised!");
-		}
-
-		if (encrypt)
-		{
-			desFunc(key1, in, inOff, out, outOff);
-			desFunc(key2, out, outOff, out, outOff);
-			desFunc(key3, out, outOff, out, outOff);
-		}
-		else
-		{
-			desFunc(key3, in, inOff, out, outOff);
-			desFunc(key2, out, outOff, out, outOff);
-			desFunc(key1, out, outOff, out, outOff);
-		}
-	}
-
-	public void reset()
-	{
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/cipher/NullCipher.java b/app/src/main/java/com/trilead/ssh2/crypto/cipher/NullCipher.java
deleted file mode 100644
index 38f8215..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/cipher/NullCipher.java
+++ /dev/null
@@ -1,35 +0,0 @@
-package com.trilead.ssh2.crypto.cipher;
-
-/**
- * NullCipher.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: NullCipher.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class NullCipher implements BlockCipher
-{
-	private int blockSize = 8;
-	
-	public NullCipher()
-	{
-	}
-
-	public NullCipher(int blockSize)
-	{
-		this.blockSize = blockSize;
-	}
-	
-	public void init(boolean forEncryption, byte[] key)
-	{
-	}
-
-	public int getBlockSize()
-	{
-		return blockSize;
-	}
-
-	public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
-	{
-		System.arraycopy(src, srcoff, dst, dstoff, blockSize);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/dh/DhExchange.java b/app/src/main/java/com/trilead/ssh2/crypto/dh/DhExchange.java
deleted file mode 100644
index 3acde25..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/dh/DhExchange.java
+++ /dev/null
@@ -1,132 +0,0 @@
-/**
- *
- */
-package com.trilead.ssh2.crypto.dh;
-
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.InvalidAlgorithmParameterException;
-import java.security.InvalidKeyException;
-import java.security.KeyFactory;
-import java.security.KeyPair;
-import java.security.KeyPairGenerator;
-import java.security.NoSuchAlgorithmException;
-import java.security.spec.InvalidKeySpecException;
-
-import javax.crypto.KeyAgreement;
-import javax.crypto.interfaces.DHPrivateKey;
-import javax.crypto.interfaces.DHPublicKey;
-import javax.crypto.spec.DHParameterSpec;
-import javax.crypto.spec.DHPublicKeySpec;
-
-/**
- * @author kenny
- *
- */
-public class DhExchange extends GenericDhExchange {
-
-	/* Given by the standard */
-
-	private static final BigInteger P1 = new BigInteger(
-			  "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
-			+ "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
-			+ "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
-			+ "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
-			+ "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381"
-			+ "FFFFFFFFFFFFFFFF", 16);
-
-	private static final BigInteger P14 = new BigInteger(
-			  "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
-			+ "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
-			+ "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
-			+ "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
-			+ "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
-			+ "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
-			+ "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
-			+ "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
-			+ "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
-			+ "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
-			+ "15728E5A8AACAA68FFFFFFFFFFFFFFFF", 16);
-
-	private static final BigInteger G = BigInteger.valueOf(2);
-
-	/* Client public and private */
-
-	private DHPrivateKey clientPrivate;
-	private DHPublicKey clientPublic;
-
-	/* Server public */
-
-	private DHPublicKey serverPublic;
-
-	@Override
-	public void init(String name) throws IOException {
-		final DHParameterSpec spec;
-		if ("diffie-hellman-group1-sha1".equals(name)) {
-			spec = new DHParameterSpec(P1, G);
-		} else if ("diffie-hellman-group14-sha1".equals(name)) {
-			spec = new DHParameterSpec(P14, G);
-		} else {
-			throw new IllegalArgumentException("Unknown DH group " + name);
-		}
-
-		try {
-			KeyPairGenerator kpg = KeyPairGenerator.getInstance("DH");
-			kpg.initialize(spec);
-			KeyPair pair = kpg.generateKeyPair();
-			clientPrivate = (DHPrivateKey) pair.getPrivate();
-			clientPublic = (DHPublicKey) pair.getPublic();
-		} catch (NoSuchAlgorithmException e) {
-			throw (IOException) new IOException("No DH keypair generator").initCause(e);
-		} catch (InvalidAlgorithmParameterException e) {
-			throw (IOException) new IOException("Invalid DH parameters").initCause(e);
-		}
-	}
-
-	@Override
-	public byte[] getE() {
-		if (clientPublic == null)
-			throw new IllegalStateException("DhExchange not initialized!");
-
-		return clientPublic.getY().toByteArray();
-	}
-
-	@Override
-	protected byte[] getServerE() {
-		if (serverPublic == null)
-			throw new IllegalStateException("DhExchange not initialized!");
-
-		return serverPublic.getY().toByteArray();
-	}
-
-	@Override
-	public void setF(byte[] f) throws IOException {
-		if (clientPublic == null)
-			throw new IllegalStateException("DhExchange not initialized!");
-
-		final KeyAgreement ka;
-		try {
-			KeyFactory kf = KeyFactory.getInstance("DH");
-			DHParameterSpec params = clientPublic.getParams();
-			this.serverPublic = (DHPublicKey) kf.generatePublic(new DHPublicKeySpec(
-					new BigInteger(f), params.getP(), params.getG()));
-
-			ka = KeyAgreement.getInstance("DH");
-			ka.init(clientPrivate);
-			ka.doPhase(serverPublic, true);
-		} catch (NoSuchAlgorithmException e) {
-			throw (IOException) new IOException("No DH key agreement method").initCause(e);
-		} catch (InvalidKeyException e) {
-			throw (IOException) new IOException("Invalid DH key").initCause(e);
-		} catch (InvalidKeySpecException e) {
-			throw (IOException) new IOException("Invalid DH key").initCause(e);
-		}
-
-		sharedSecret = new BigInteger(ka.generateSecret());
-	}
-
-	@Override
-	public String getHashAlgo() {
-		return "SHA1";
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/dh/DhGroupExchange.java b/app/src/main/java/com/trilead/ssh2/crypto/dh/DhGroupExchange.java
deleted file mode 100644
index a888950..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/dh/DhGroupExchange.java
+++ /dev/null
@@ -1,113 +0,0 @@
-
-package com.trilead.ssh2.crypto.dh;
-
-import java.math.BigInteger;
-import java.security.SecureRandom;
-
-import com.trilead.ssh2.DHGexParameters;
-import com.trilead.ssh2.crypto.digest.HashForSSH2Types;
-
-
-/**
- * DhGroupExchange.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DhGroupExchange.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class DhGroupExchange
-{
-	/* Given by the standard */
-
-	private BigInteger p;
-	private BigInteger g;
-
-	/* Client public and private */
-
-	private BigInteger e;
-	private BigInteger x;
-
-	/* Server public */
-
-	private BigInteger f;
-
-	/* Shared secret */
-
-	private BigInteger k;
-
-	public DhGroupExchange(BigInteger p, BigInteger g)
-	{
-		this.p = p;
-		this.g = g;
-	}
-
-	public void init(SecureRandom rnd)
-	{
-		k = null;
-
-		x = new BigInteger(p.bitLength() - 1, rnd);
-		e = g.modPow(x, p);
-	}
-
-	/**
-	 * @return Returns the e.
-	 */
-	public BigInteger getE()
-	{
-		if (e == null)
-			throw new IllegalStateException("Not initialized!");
-
-		return e;
-	}
-
-	/**
-	 * @return Returns the shared secret k.
-	 */
-	public BigInteger getK()
-	{
-		if (k == null)
-			throw new IllegalStateException("Shared secret not yet known, need f first!");
-
-		return k;
-	}
-
-	/**
-	 * Sets f and calculates the shared secret.
-	 */
-	public void setF(BigInteger f)
-	{
-		if (e == null)
-			throw new IllegalStateException("Not initialized!");
-
-		BigInteger zero = BigInteger.valueOf(0);
-
-		if (zero.compareTo(f) >= 0 || p.compareTo(f) <= 0)
-			throw new IllegalArgumentException("Invalid f specified!");
-
-		this.f = f;
-		this.k = f.modPow(x, p);
-	}
-
-	public byte[] calculateH(String hashAlgo, byte[] clientversion, byte[] serverversion,
-			byte[] clientKexPayload, byte[] serverKexPayload, byte[] hostKey, DHGexParameters para)
-	{
-		HashForSSH2Types hash = new HashForSSH2Types(hashAlgo);
-
-		hash.updateByteString(clientversion);
-		hash.updateByteString(serverversion);
-		hash.updateByteString(clientKexPayload);
-		hash.updateByteString(serverKexPayload);
-		hash.updateByteString(hostKey);
-		if (para.getMin_group_len() > 0)
-			hash.updateUINT32(para.getMin_group_len());
-		hash.updateUINT32(para.getPref_group_len());
-		if (para.getMax_group_len() > 0)
-			hash.updateUINT32(para.getMax_group_len());
-		hash.updateBigInt(p);
-		hash.updateBigInt(g);
-		hash.updateBigInt(e);
-		hash.updateBigInt(f);
-		hash.updateBigInt(k);
-
-		return hash.getDigest();
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/dh/EcDhExchange.java b/app/src/main/java/com/trilead/ssh2/crypto/dh/EcDhExchange.java
deleted file mode 100644
index 870a3b4..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/dh/EcDhExchange.java
+++ /dev/null
@@ -1,106 +0,0 @@
-/**
- *
- */
-package com.trilead.ssh2.crypto.dh;
-
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.InvalidAlgorithmParameterException;
-import java.security.InvalidKeyException;
-import java.security.KeyFactory;
-import java.security.KeyPair;
-import java.security.KeyPairGenerator;
-import java.security.NoSuchAlgorithmException;
-import java.security.interfaces.ECPrivateKey;
-import java.security.interfaces.ECPublicKey;
-import java.security.spec.ECParameterSpec;
-import java.security.spec.ECPoint;
-import java.security.spec.ECPublicKeySpec;
-import java.security.spec.InvalidKeySpecException;
-
-import javax.crypto.KeyAgreement;
-
-import com.trilead.ssh2.signature.ECDSASHA2Verify;
-
-/**
- * @author kenny
- *
- */
-public class EcDhExchange extends GenericDhExchange {
-	private ECPrivateKey clientPrivate;
-	private ECPublicKey clientPublic;
-	private ECPublicKey serverPublic;
-
-	@Override
-	public void init(String name) throws IOException {
-		final ECParameterSpec spec;
-
-		if ("ecdh-sha2-nistp256".equals(name)) {
-			spec = ECDSASHA2Verify.EllipticCurves.nistp256;
-		} else if ("ecdh-sha2-nistp384".equals(name)) {
-			spec = ECDSASHA2Verify.EllipticCurves.nistp384;
-		} else if ("ecdh-sha2-nistp521".equals(name)) {
-			spec = ECDSASHA2Verify.EllipticCurves.nistp521;
-		} else {
-			throw new IllegalArgumentException("Unknown EC curve " + name);
-		}
-
-		KeyPairGenerator kpg;
-		try {
-			kpg = KeyPairGenerator.getInstance("EC");
-			kpg.initialize(spec);
-			KeyPair pair = kpg.generateKeyPair();
-			clientPrivate = (ECPrivateKey) pair.getPrivate();
-			clientPublic = (ECPublicKey) pair.getPublic();
-		} catch (NoSuchAlgorithmException e) {
-			throw (IOException) new IOException("No DH keypair generator").initCause(e);
-		} catch (InvalidAlgorithmParameterException e) {
-			throw (IOException) new IOException("Invalid DH parameters").initCause(e);
-		}
-	}
-
-	@Override
-	public byte[] getE() {
-		return ECDSASHA2Verify.encodeECPoint(clientPublic.getW(), clientPublic.getParams()
-				.getCurve());
-	}
-
-	@Override
-	protected byte[] getServerE() {
-		return ECDSASHA2Verify.encodeECPoint(serverPublic.getW(), serverPublic.getParams()
-				.getCurve());
-	}
-
-	@Override
-	public void setF(byte[] f) throws IOException {
-
-		if (clientPublic == null)
-			throw new IllegalStateException("DhDsaExchange not initialized!");
-
-		final KeyAgreement ka;
-		try {
-			KeyFactory kf = KeyFactory.getInstance("EC");
-			ECParameterSpec params = clientPublic.getParams();
-			ECPoint serverPoint = ECDSASHA2Verify.decodeECPoint(f, params.getCurve());
-			this.serverPublic = (ECPublicKey) kf.generatePublic(new ECPublicKeySpec(serverPoint,
-																					params));
-
-			ka = KeyAgreement.getInstance("ECDH");
-			ka.init(clientPrivate);
-			ka.doPhase(serverPublic, true);
-		} catch (NoSuchAlgorithmException e) {
-			throw (IOException) new IOException("No ECDH key agreement method").initCause(e);
-		} catch (InvalidKeyException e) {
-			throw (IOException) new IOException("Invalid ECDH key").initCause(e);
-		} catch (InvalidKeySpecException e) {
-			throw (IOException) new IOException("Invalid ECDH key").initCause(e);
-		}
-
-		sharedSecret = new BigInteger(1, ka.generateSecret());
-	}
-
-	@Override
-	public String getHashAlgo() {
-		return ECDSASHA2Verify.getDigestAlgorithmForParams(clientPublic.getParams());
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/dh/GenericDhExchange.java b/app/src/main/java/com/trilead/ssh2/crypto/dh/GenericDhExchange.java
deleted file mode 100644
index 039ff75..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/dh/GenericDhExchange.java
+++ /dev/null
@@ -1,93 +0,0 @@
-
-package com.trilead.ssh2.crypto.dh;
-
-import java.io.IOException;
-import java.io.UnsupportedEncodingException;
-import java.math.BigInteger;
-
-import com.trilead.ssh2.crypto.digest.HashForSSH2Types;
-import com.trilead.ssh2.log.Logger;
-
-
-/**
- * DhExchange.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DhExchange.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public abstract class GenericDhExchange
-{
-	private static final Logger log = Logger.getLogger(GenericDhExchange.class);
-
-	/* Shared secret */
-
-	BigInteger sharedSecret;
-
-	protected GenericDhExchange()
-	{
-	}
-
-	public static GenericDhExchange getInstance(String algo) {
-		if (algo.startsWith("ecdh-sha2-")) {
-			return new EcDhExchange();
-		} else {
-			return new DhExchange();
-		}
-	}
-
-	public abstract void init(String name) throws IOException;
-
-	/**
-	 * @return Returns the e (public value)
-	 * @throws IllegalStateException
-	 */
-	public abstract byte[] getE();
-
-	/**
-	 * @return Returns the server's e (public value)
-	 * @throws IllegalStateException
-	 */
-	protected abstract byte[] getServerE();
-
-	/**
-	 * @return Returns the shared secret k.
-	 * @throws IllegalStateException
-	 */
-	public BigInteger getK()
-	{
-		if (sharedSecret == null)
-			throw new IllegalStateException("Shared secret not yet known, need f first!");
-
-		return sharedSecret;
-	}
-
-	/**
-	 * @param f
-	 */
-	public abstract void setF(byte[] f) throws IOException;
-
-	public byte[] calculateH(byte[] clientversion, byte[] serverversion, byte[] clientKexPayload,
-			byte[] serverKexPayload, byte[] hostKey) throws UnsupportedEncodingException
-	{
-		HashForSSH2Types hash = new HashForSSH2Types(getHashAlgo());
-
-		if (log.isEnabled())
-		{
-			log.log(90, "Client: '" + new String(clientversion, "ISO-8859-1") + "'");
-			log.log(90, "Server: '" + new String(serverversion, "ISO-8859-1") + "'");
-		}
-
-		hash.updateByteString(clientversion);
-		hash.updateByteString(serverversion);
-		hash.updateByteString(clientKexPayload);
-		hash.updateByteString(serverKexPayload);
-		hash.updateByteString(hostKey);
-		hash.updateByteString(getE());
-		hash.updateByteString(getServerE());
-		hash.updateBigInt(sharedSecret);
-
-		return hash.getDigest();
-	}
-
-	public abstract String getHashAlgo();
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java b/app/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java
deleted file mode 100644
index 6b0d6e3..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/digest/HashForSSH2Types.java
+++ /dev/null
@@ -1,91 +0,0 @@
-
-package com.trilead.ssh2.crypto.digest;
-
-import java.math.BigInteger;
-import java.security.DigestException;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-
-/**
- * HashForSSH2Types.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: HashForSSH2Types.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class HashForSSH2Types
-{
-	MessageDigest md;
-
-	public HashForSSH2Types(String type)
-	{
-		try {
-			md = MessageDigest.getInstance(type);
-		} catch (NoSuchAlgorithmException e) {
-			throw new RuntimeException("Unsupported algorithm " + type);
-		}
-	}
-
-	public void updateByte(byte b)
-	{
-		/* HACK - to test it with J2ME */
-		byte[] tmp = new byte[1];
-		tmp[0] = b;
-		md.update(tmp);
-	}
-
-	public void updateBytes(byte[] b)
-	{
-		md.update(b);
-	}
-
-	public void updateUINT32(int v)
-	{
-		md.update((byte) (v >> 24));
-		md.update((byte) (v >> 16));
-		md.update((byte) (v >> 8));
-		md.update((byte) (v));
-	}
-
-	public void updateByteString(byte[] b)
-	{
-		updateUINT32(b.length);
-		updateBytes(b);
-	}
-
-	public void updateBigInt(BigInteger b)
-	{
-		updateByteString(b.toByteArray());
-	}
-
-	public void reset()
-	{
-		md.reset();
-	}
-
-	public int getDigestLength()
-	{
-		return md.getDigestLength();
-	}
-
-	public byte[] getDigest()
-	{
-		byte[] tmp = new byte[md.getDigestLength()];
-		getDigest(tmp);
-		return tmp;
-	}
-
-	public void getDigest(byte[] out)
-	{
-		getDigest(out, 0);
-	}
-
-	public void getDigest(byte[] out, int off)
-	{
-		try {
-			md.digest(out, off, out.length - off);
-		} catch (DigestException e) {
-			// TODO is this right?!
-			throw new RuntimeException("Unable to digest", e);
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java b/app/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java
deleted file mode 100644
index 561599c..0000000
--- a/app/src/main/java/com/trilead/ssh2/crypto/digest/MAC.java
+++ /dev/null
@@ -1,157 +0,0 @@
-
-package com.trilead.ssh2.crypto.digest;
-
-import java.security.InvalidKeyException;
-import java.security.NoSuchAlgorithmException;
-
-import javax.crypto.Mac;
-import javax.crypto.ShortBufferException;
-import javax.crypto.spec.SecretKeySpec;
-
-/**
- * MAC.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: MAC.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public final class MAC
-{
-	/**
-	 * From http://tools.ietf.org/html/rfc4253
-	 */
-	private static final String HMAC_MD5 = "hmac-md5";
-
-	/**
-	 * From http://tools.ietf.org/html/rfc4253
-	 */
-	private static final String HMAC_MD5_96 = "hmac-md5-96";
-
-	/**
-	 * From http://tools.ietf.org/html/rfc4253
-	 */
-	private static final String HMAC_SHA1 = "hmac-sha1";
-
-	/**
-	 * From http://tools.ietf.org/html/rfc4253
-	 */
-	private static final String HMAC_SHA1_96 = "hmac-sha1-96";
-
-	/**
-	 * From http://tools.ietf.org/html/rfc6668
-	 */
-	private static final String HMAC_SHA2_256 = "hmac-sha2-256";
-
-	/**
-	 * From http://tools.ietf.org/html/rfc6668
-	 */
-	private static final String HMAC_SHA2_512 = "hmac-sha2-512";
-
-	Mac mac;
-	int outSize;
-	int macSize;
-	byte[] buffer;
-
-	/* Higher Priority First */
-	private static final String[] MAC_LIST = {
-		HMAC_SHA2_256, HMAC_SHA2_512,
-		HMAC_SHA1_96, HMAC_SHA1, HMAC_MD5_96, HMAC_MD5
-	};
-
-	public final static String[] getMacList()
-	{
-		return MAC_LIST;
-	}
-
-	public final static void checkMacList(String[] macs)
-	{
-		for (int i = 0; i < macs.length; i++)
-			getKeyLen(macs[i]);
-	}
-
-	public final static int getKeyLen(String type)
-	{
-		if (HMAC_SHA1.equals(type) || HMAC_SHA1_96.equals(type))
-			return 20;
-		if (HMAC_MD5.equals(type) || HMAC_MD5_96.equals(type))
-			return 16;
-		if (HMAC_SHA2_256.equals(type))
-			return 32;
-		if (HMAC_SHA2_512.equals(type))
-			return 64;
-		throw new IllegalArgumentException("Unkown algorithm " + type);
-	}
-
-	public MAC(String type, byte[] key)
-	{
-		try {
-			if (HMAC_SHA1.equals(type) || HMAC_SHA1_96.equals(type))
-			{
-				mac = Mac.getInstance("HmacSHA1");
-			}
-			else if (HMAC_MD5.equals(type) || HMAC_MD5_96.equals(type))
-			{
-				mac = Mac.getInstance("HmacMD5");
-			}
-			else if (HMAC_SHA2_256.equals(type))
-			{
-				mac = Mac.getInstance("HmacSHA256");
-			}
-			else if (HMAC_SHA2_512.equals(type))
-			{
-				mac = Mac.getInstance("HmacSHA512");
-			}
-			else
-				throw new IllegalArgumentException("Unkown algorithm " + type);
-		} catch (NoSuchAlgorithmException e) {
-			throw new IllegalArgumentException("Unknown algorithm " + type, e);
-		}
-
-		macSize = mac.getMacLength();
-		if (type.endsWith("-96")) {
-			outSize = 12;
-			buffer = new byte[macSize];
-		} else {
-			outSize = macSize;
-			buffer = null;
-		}
-
-		try {
-			mac.init(new SecretKeySpec(key, type));
-		} catch (InvalidKeyException e) {
-			throw new IllegalArgumentException(e);
-		}
-	}
-
-	public final void initMac(int seq)
-	{
-		mac.reset();
-		mac.update((byte) (seq >> 24));
-		mac.update((byte) (seq >> 16));
-		mac.update((byte) (seq >> 8));
-		mac.update((byte) (seq));
-	}
-
-	public final void update(byte[] packetdata, int off, int len)
-	{
-		mac.update(packetdata, off, len);
-	}
-
-	public final void getMac(byte[] out, int off)
-	{
-		try {
-			if (buffer != null) {
-				mac.doFinal(buffer, 0);
-				System.arraycopy(buffer, 0, out, off, out.length - off);
-			} else {
-				mac.doFinal(out, off);
-			}
-		} catch (ShortBufferException e) {
-			throw new IllegalStateException(e);
-		}
-	}
-
-	public final int size()
-	{
-		return outSize;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/log/Logger.java b/app/src/main/java/com/trilead/ssh2/log/Logger.java
deleted file mode 100644
index 20ab397..0000000
--- a/app/src/main/java/com/trilead/ssh2/log/Logger.java
+++ /dev/null
@@ -1,54 +0,0 @@
-
-package com.trilead.ssh2.log;
-
-import com.trilead.ssh2.DebugLogger;
-
-/**
- * Logger - a very simple logger, mainly used during development.
- * Is not based on log4j (to reduce external dependencies).
- * However, if needed, something like log4j could easily be
- * hooked in.
- * <p>
- * For speed reasons, the static variables are not protected
- * with semaphores. In other words, if you dynamicaly change the
- * logging settings, then some threads may still use the old setting.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Logger.java,v 1.2 2008/03/03 07:01:36 cplattne Exp $
- */
-
-public class Logger
-{
-	public static boolean enabled = false;
-	public static DebugLogger logger = null;
-	
-	private String className;
-
-	public final static Logger getLogger(Class x)
-	{
-		return new Logger(x);
-	}
-
-	public Logger(Class x)
-	{
-		this.className = x.getName();
-	}
-
-	public final boolean isEnabled()
-	{
-		return enabled;
-	}
-
-	public final void log(int level, String message)
-	{
-		if (!enabled)
-			return;
-		
-		DebugLogger target = logger;
-		
-		if (target == null)
-			return;
-		
-		target.log(level, className, message);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelAuthAgentReq.java b/app/src/main/java/com/trilead/ssh2/packets/PacketChannelAuthAgentReq.java
deleted file mode 100644
index 95fa396..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelAuthAgentReq.java
+++ /dev/null
@@ -1,33 +0,0 @@
-package com.trilead.ssh2.packets;
-
-/**
- * PacketGlobalAuthAgent.
- *
- * @author Kenny Root, kenny@the-b.org
- * @version $Id$
- */
-public class PacketChannelAuthAgentReq
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-
-	public PacketChannelAuthAgentReq(int recipientChannelID)
-	{
-		this.recipientChannelID = recipientChannelID;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeString("auth-agent-req@openssh.com");
-			tw.writeBoolean(true); // want reply
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenConfirmation.java b/app/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenConfirmation.java
deleted file mode 100644
index bd2ea3f..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenConfirmation.java
+++ /dev/null
@@ -1,66 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketChannelOpenConfirmation.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketChannelOpenConfirmation.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketChannelOpenConfirmation
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-	public int senderChannelID;
-	public int initialWindowSize;
-	public int maxPacketSize;
-
-	public PacketChannelOpenConfirmation(int recipientChannelID, int senderChannelID, int initialWindowSize,
-			int maxPacketSize)
-	{
-		this.recipientChannelID = recipientChannelID;
-		this.senderChannelID = senderChannelID;
-		this.initialWindowSize = initialWindowSize;
-		this.maxPacketSize = maxPacketSize;
-	}
-
-	public PacketChannelOpenConfirmation(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION)
-			throw new IOException(
-					"This is not a SSH_MSG_CHANNEL_OPEN_CONFIRMATION! ("
-							+ packet_type + ")");
-
-		recipientChannelID = tr.readUINT32();
-		senderChannelID = tr.readUINT32();
-		initialWindowSize = tr.readUINT32();
-		maxPacketSize = tr.readUINT32();
-		
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN_CONFIRMATION packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeUINT32(senderChannelID);
-			tw.writeUINT32(initialWindowSize);
-			tw.writeUINT32(maxPacketSize);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenFailure.java b/app/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenFailure.java
deleted file mode 100644
index 1370355..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelOpenFailure.java
+++ /dev/null
@@ -1,66 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketChannelOpenFailure.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketChannelOpenFailure.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketChannelOpenFailure
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-	public int reasonCode;
-	public String description;
-	public String languageTag;
-
-	public PacketChannelOpenFailure(int recipientChannelID, int reasonCode, String description,
-			String languageTag)
-	{
-		this.recipientChannelID = recipientChannelID;
-		this.reasonCode = reasonCode;
-		this.description = description;
-		this.languageTag = languageTag;
-	}
-
-	public PacketChannelOpenFailure(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN_FAILURE)
-			throw new IOException(
-					"This is not a SSH_MSG_CHANNEL_OPEN_FAILURE! ("
-							+ packet_type + ")");
-
-		recipientChannelID = tr.readUINT32();
-		reasonCode = tr.readUINT32();
-		description = tr.readString();
-		languageTag = tr.readString();
-		
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN_FAILURE packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN_FAILURE);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeUINT32(reasonCode);
-			tw.writeString(description);
-			tw.writeString(languageTag);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelTrileadPing.java b/app/src/main/java/com/trilead/ssh2/packets/PacketChannelTrileadPing.java
deleted file mode 100644
index c337930..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelTrileadPing.java
+++ /dev/null
@@ -1,35 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-/**
- * PacketChannelTrileadPing.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketChannelTrileadPing.java,v 1.1 2008/03/03 07:01:36
- *          cplattne Exp $
- */
-public class PacketChannelTrileadPing
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-
-	public PacketChannelTrileadPing(int recipientChannelID)
-	{
-		this.recipientChannelID = recipientChannelID;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeString("trilead-ping");
-			tw.writeBoolean(true);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelWindowAdjust.java b/app/src/main/java/com/trilead/ssh2/packets/PacketChannelWindowAdjust.java
deleted file mode 100644
index 37ec081..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketChannelWindowAdjust.java
+++ /dev/null
@@ -1,57 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketChannelWindowAdjust.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketChannelWindowAdjust.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketChannelWindowAdjust
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-	public int windowChange;
-
-	public PacketChannelWindowAdjust(int recipientChannelID, int windowChange)
-	{
-		this.recipientChannelID = recipientChannelID;
-		this.windowChange = windowChange;
-	}
-
-	public PacketChannelWindowAdjust(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST)
-			throw new IOException(
-					"This is not a SSH_MSG_CHANNEL_WINDOW_ADJUST! ("
-							+ packet_type + ")");
-
-		recipientChannelID = tr.readUINT32();
-		windowChange = tr.readUINT32();
-		
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_CHANNEL_WINDOW_ADJUST packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_WINDOW_ADJUST);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeUINT32(windowChange);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketDisconnect.java b/app/src/main/java/com/trilead/ssh2/packets/PacketDisconnect.java
deleted file mode 100644
index 50d6ec2..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketDisconnect.java
+++ /dev/null
@@ -1,57 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketDisconnect.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketDisconnect.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class PacketDisconnect
-{
-	byte[] payload;
-
-	int reason;
-	String desc;
-	String lang;
-
-	public PacketDisconnect(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_DISCONNECT)
-			throw new IOException("This is not a Disconnect Packet! (" + packet_type + ")");
-
-		reason = tr.readUINT32();
-		desc = tr.readString();
-		lang = tr.readString();
-	}
-
-	public PacketDisconnect(int reason, String desc, String lang)
-	{
-		this.reason = reason;
-		this.desc = desc;
-		this.lang = lang;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_DISCONNECT);
-			tw.writeUINT32(reason);
-			tw.writeString(desc);
-			tw.writeString(lang);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketGlobalCancelForwardRequest.java b/app/src/main/java/com/trilead/ssh2/packets/PacketGlobalCancelForwardRequest.java
deleted file mode 100644
index 20bd558..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketGlobalCancelForwardRequest.java
+++ /dev/null
@@ -1,42 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-/**
- * PacketGlobalCancelForwardRequest.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketGlobalCancelForwardRequest.java,v 1.1 2007/10/15 12:49:55
- *          cplattne Exp $
- */
-public class PacketGlobalCancelForwardRequest
-{
-	byte[] payload;
-
-	public boolean wantReply;
-	public String bindAddress;
-	public int bindPort;
-
-	public PacketGlobalCancelForwardRequest(boolean wantReply, String bindAddress, int bindPort)
-	{
-		this.wantReply = wantReply;
-		this.bindAddress = bindAddress;
-		this.bindPort = bindPort;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_GLOBAL_REQUEST);
-
-			tw.writeString("cancel-tcpip-forward");
-			tw.writeBoolean(wantReply);
-			tw.writeString(bindAddress);
-			tw.writeUINT32(bindPort);
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketGlobalForwardRequest.java b/app/src/main/java/com/trilead/ssh2/packets/PacketGlobalForwardRequest.java
deleted file mode 100644
index 55257e9..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketGlobalForwardRequest.java
+++ /dev/null
@@ -1,41 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-/**
- * PacketGlobalForwardRequest.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketGlobalForwardRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketGlobalForwardRequest
-{
-	byte[] payload;
-
-	public boolean wantReply;
-	public String bindAddress;
-	public int bindPort;
-
-	public PacketGlobalForwardRequest(boolean wantReply, String bindAddress, int bindPort)
-	{
-		this.wantReply = wantReply;
-		this.bindAddress = bindAddress;
-		this.bindPort = bindPort;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_GLOBAL_REQUEST);
-			
-			tw.writeString("tcpip-forward");
-			tw.writeBoolean(wantReply);
-			tw.writeString(bindAddress);
-			tw.writeUINT32(bindPort);
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketGlobalTrileadPing.java b/app/src/main/java/com/trilead/ssh2/packets/PacketGlobalTrileadPing.java
deleted file mode 100644
index 3d8930e..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketGlobalTrileadPing.java
+++ /dev/null
@@ -1,32 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-/**
- * PacketGlobalTrileadPing.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketGlobalTrileadPing.java,v 1.1 2008/03/03 07:01:36 cplattne Exp $
- */
-public class PacketGlobalTrileadPing
-{
-	byte[] payload;
-
-	public PacketGlobalTrileadPing()
-	{
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_GLOBAL_REQUEST);
-			
-			tw.writeString("trilead-ping");
-			tw.writeBoolean(true);
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketIgnore.java b/app/src/main/java/com/trilead/ssh2/packets/PacketIgnore.java
deleted file mode 100644
index 2b4d917..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketIgnore.java
+++ /dev/null
@@ -1,59 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketIgnore.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketIgnore.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketIgnore
-{
-	byte[] payload;
-
-	byte[] data;
-
-	public void setData(byte[] data)
-	{
-		this.data = data;
-		payload = null;
-	}
-
-	public PacketIgnore()
-	{
-	}
-
-	public PacketIgnore(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_IGNORE)
-			throw new IOException("This is not a SSH_MSG_IGNORE packet! (" + packet_type + ")");
-
-		/* Could parse String body */
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_IGNORE);
-
-			if (data != null)
-				tw.writeString(data, 0, data.length);
-			else
-				tw.writeString("");
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDHInit.java b/app/src/main/java/com/trilead/ssh2/packets/PacketKexDHInit.java
deleted file mode 100644
index 0092516..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDHInit.java
+++ /dev/null
@@ -1,31 +0,0 @@
-package com.trilead.ssh2.packets;
-
-/**
- * PacketKexDHInit.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDHInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDHInit
-{
-	byte[] payload;
-
-	byte[] publicKey;
-
-	public PacketKexDHInit(byte[] publicKey)
-	{
-		this.publicKey = publicKey;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_KEXDH_INIT);
-			tw.writeString(publicKey, 0, publicKey.length);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDHReply.java b/app/src/main/java/com/trilead/ssh2/packets/PacketKexDHReply.java
deleted file mode 100644
index 51f2bda..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDHReply.java
+++ /dev/null
@@ -1,53 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketKexDHReply.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDHReply.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDHReply
-{
-	byte[] payload;
-
-	byte[] hostKey;
-	byte[] publicKey;
-	byte[] signature;
-	
-	public PacketKexDHReply(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_KEXDH_REPLY)
-			throw new IOException("This is not a SSH_MSG_KEXDH_REPLY! ("
-					+ packet_type + ")");
-
-		hostKey = tr.readByteString();
-		publicKey = tr.readByteString();
-		signature = tr.readByteString();
-
-		if (tr.remain() != 0) throw new IOException("PADDING IN SSH_MSG_KEXDH_REPLY!");
-	}
-
-	public byte[] getF()
-	{
-		return publicKey;
-	}
-	
-	public byte[] getHostKey()
-	{
-		return hostKey;
-	}
-
-	public byte[] getSignature()
-	{
-		return signature;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexGroup.java b/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexGroup.java
deleted file mode 100644
index db85b61..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexGroup.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-import java.math.BigInteger;
-
-/**
- * PacketKexDhGexGroup.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexGroup.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexGroup
-{
-	byte[] payload;
-
-	BigInteger p;
-	BigInteger g;
-
-	public PacketKexDhGexGroup(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_KEX_DH_GEX_GROUP)
-			throw new IllegalArgumentException(
-					"This is not a SSH_MSG_KEX_DH_GEX_GROUP! (" + packet_type
-							+ ")");
-
-		p = tr.readMPINT();
-		g = tr.readMPINT();
-
-		if (tr.remain() != 0)
-			throw new IOException("PADDING IN SSH_MSG_KEX_DH_GEX_GROUP!");
-	}
-
-	public BigInteger getG()
-	{
-		return g;
-	}
-
-	public BigInteger getP()
-	{
-		return p;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexInit.java b/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexInit.java
deleted file mode 100644
index 8b34230..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexInit.java
+++ /dev/null
@@ -1,33 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.math.BigInteger;
-
-/**
- * PacketKexDhGexInit.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexInit
-{
-	byte[] payload;
-
-	BigInteger e;
-
-	public PacketKexDhGexInit(BigInteger e)
-	{
-		this.e = e;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_INIT);
-			tw.writeMPInt(e);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexReply.java b/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexReply.java
deleted file mode 100644
index 382b3b7..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexReply.java
+++ /dev/null
@@ -1,56 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-import java.math.BigInteger;
-
-/**
- * PacketKexDhGexReply.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexReply.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexReply
-{
-	byte[] payload;
-
-	byte[] hostKey;
-	BigInteger f;
-	byte[] signature;
-
-	public PacketKexDhGexReply(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_KEX_DH_GEX_REPLY)
-			throw new IOException("This is not a SSH_MSG_KEX_DH_GEX_REPLY! (" + packet_type + ")");
-
-		hostKey = tr.readByteString();
-		f = tr.readMPINT();
-		signature = tr.readByteString();
-
-		if (tr.remain() != 0)
-			throw new IOException("PADDING IN SSH_MSG_KEX_DH_GEX_REPLY!");
-	}
-
-	public BigInteger getF()
-	{
-		return f;
-	}
-
-	public byte[] getHostKey()
-	{
-		return hostKey;
-	}
-
-	public byte[] getSignature()
-	{
-		return signature;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequest.java b/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequest.java
deleted file mode 100644
index 50369df..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequest.java
+++ /dev/null
@@ -1,39 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import com.trilead.ssh2.DHGexParameters;
-
-/**
- * PacketKexDhGexRequest.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexRequest
-{
-	byte[] payload;
-
-	int min;
-	int n;
-	int max;
-
-	public PacketKexDhGexRequest(DHGexParameters para)
-	{
-		this.min = para.getMin_group_len();
-		this.n = para.getPref_group_len();
-		this.max = para.getMax_group_len();
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_REQUEST);
-			tw.writeUINT32(min);
-			tw.writeUINT32(n);
-			tw.writeUINT32(max);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequestOld.java b/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequestOld.java
deleted file mode 100644
index 327f379..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketKexDhGexRequestOld.java
+++ /dev/null
@@ -1,34 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import com.trilead.ssh2.DHGexParameters;
-
-/**
- * PacketKexDhGexRequestOld.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexDhGexRequestOld.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexDhGexRequestOld
-{
-	byte[] payload;
-
-	int n;
-
-	public PacketKexDhGexRequestOld(DHGexParameters para)
-	{
-		this.n = para.getPref_group_len();
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_KEX_DH_GEX_REQUEST_OLD);
-			tw.writeUINT32(n);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java b/app/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java
deleted file mode 100644
index 087d658..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketKexInit.java
+++ /dev/null
@@ -1,165 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-import java.security.SecureRandom;
-
-import com.trilead.ssh2.crypto.CryptoWishList;
-import com.trilead.ssh2.transport.KexParameters;
-
-
-/**
- * PacketKexInit.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketKexInit.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketKexInit
-{
-	byte[] payload;
-
-	KexParameters kp = new KexParameters();
-
-	public PacketKexInit(CryptoWishList cwl)
-	{
-		kp.cookie = new byte[16];
-		new SecureRandom().nextBytes(kp.cookie);
-
-		kp.kex_algorithms = cwl.kexAlgorithms;
-		kp.server_host_key_algorithms = cwl.serverHostKeyAlgorithms;
-		kp.encryption_algorithms_client_to_server = cwl.c2s_enc_algos;
-		kp.encryption_algorithms_server_to_client = cwl.s2c_enc_algos;
-		kp.mac_algorithms_client_to_server = cwl.c2s_mac_algos;
-		kp.mac_algorithms_server_to_client = cwl.s2c_mac_algos;
-		kp.compression_algorithms_client_to_server = cwl.c2s_comp_algos;
-		kp.compression_algorithms_server_to_client = cwl.s2c_comp_algos;
-		kp.languages_client_to_server = new String[] {};
-		kp.languages_server_to_client = new String[] {};
-		kp.first_kex_packet_follows = false;
-		kp.reserved_field1 = 0;
-	}
-
-	public PacketKexInit(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_KEXINIT)
-			throw new IOException("This is not a KexInitPacket! (" + packet_type + ")");
-
-		kp.cookie = tr.readBytes(16);
-		kp.kex_algorithms = tr.readNameList();
-		kp.server_host_key_algorithms = tr.readNameList();
-		kp.encryption_algorithms_client_to_server = tr.readNameList();
-		kp.encryption_algorithms_server_to_client = tr.readNameList();
-		kp.mac_algorithms_client_to_server = tr.readNameList();
-		kp.mac_algorithms_server_to_client = tr.readNameList();
-		kp.compression_algorithms_client_to_server = tr.readNameList();
-		kp.compression_algorithms_server_to_client = tr.readNameList();
-		kp.languages_client_to_server = tr.readNameList();
-		kp.languages_server_to_client = tr.readNameList();
-		kp.first_kex_packet_follows = tr.readBoolean();
-		kp.reserved_field1 = tr.readUINT32();
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in KexInitPacket!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_KEXINIT);
-			tw.writeBytes(kp.cookie, 0, 16);
-			tw.writeNameList(kp.kex_algorithms);
-			tw.writeNameList(kp.server_host_key_algorithms);
-			tw.writeNameList(kp.encryption_algorithms_client_to_server);
-			tw.writeNameList(kp.encryption_algorithms_server_to_client);
-			tw.writeNameList(kp.mac_algorithms_client_to_server);
-			tw.writeNameList(kp.mac_algorithms_server_to_client);
-			tw.writeNameList(kp.compression_algorithms_client_to_server);
-			tw.writeNameList(kp.compression_algorithms_server_to_client);
-			tw.writeNameList(kp.languages_client_to_server);
-			tw.writeNameList(kp.languages_server_to_client);
-			tw.writeBoolean(kp.first_kex_packet_follows);
-			tw.writeUINT32(kp.reserved_field1);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-
-	public KexParameters getKexParameters()
-	{
-		return kp;
-	}
-
-	public String[] getCompression_algorithms_client_to_server()
-	{
-		return kp.compression_algorithms_client_to_server;
-	}
-
-	public String[] getCompression_algorithms_server_to_client()
-	{
-		return kp.compression_algorithms_server_to_client;
-	}
-
-	public byte[] getCookie()
-	{
-		return kp.cookie;
-	}
-
-	public String[] getEncryption_algorithms_client_to_server()
-	{
-		return kp.encryption_algorithms_client_to_server;
-	}
-
-	public String[] getEncryption_algorithms_server_to_client()
-	{
-		return kp.encryption_algorithms_server_to_client;
-	}
-
-	public boolean isFirst_kex_packet_follows()
-	{
-		return kp.first_kex_packet_follows;
-	}
-
-	public String[] getKex_algorithms()
-	{
-		return kp.kex_algorithms;
-	}
-
-	public String[] getLanguages_client_to_server()
-	{
-		return kp.languages_client_to_server;
-	}
-
-	public String[] getLanguages_server_to_client()
-	{
-		return kp.languages_server_to_client;
-	}
-
-	public String[] getMac_algorithms_client_to_server()
-	{
-		return kp.mac_algorithms_client_to_server;
-	}
-
-	public String[] getMac_algorithms_server_to_client()
-	{
-		return kp.mac_algorithms_server_to_client;
-	}
-
-	public int getReserved_field1()
-	{
-		return kp.reserved_field1;
-	}
-
-	public String[] getServer_host_key_algorithms()
-	{
-		return kp.server_host_key_algorithms;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketNewKeys.java b/app/src/main/java/com/trilead/ssh2/packets/PacketNewKeys.java
deleted file mode 100644
index 3ca6503..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketNewKeys.java
+++ /dev/null
@@ -1,46 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketNewKeys.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketNewKeys.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketNewKeys
-{
-	byte[] payload;
-
-	public PacketNewKeys()
-	{
-	}
-	
-	public PacketNewKeys(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_NEWKEYS)
-			throw new IOException("This is not a SSH_MSG_NEWKEYS! ("
-					+ packet_type + ")");
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_NEWKEYS packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_NEWKEYS);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketOpenDirectTCPIPChannel.java b/app/src/main/java/com/trilead/ssh2/packets/PacketOpenDirectTCPIPChannel.java
deleted file mode 100644
index da6cbef..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketOpenDirectTCPIPChannel.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package com.trilead.ssh2.packets;
-
-
-/**
- * PacketOpenDirectTCPIPChannel.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketOpenDirectTCPIPChannel.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketOpenDirectTCPIPChannel
-{
-	byte[] payload;
-
-	int channelID;
-	int initialWindowSize;
-	int maxPacketSize;
-
-	String host_to_connect;
-	int port_to_connect;
-	String originator_IP_address;
-	int originator_port;
-
-	public PacketOpenDirectTCPIPChannel(int channelID, int initialWindowSize, int maxPacketSize,
-			String host_to_connect, int port_to_connect, String originator_IP_address,
-			int originator_port)
-	{
-		this.channelID = channelID;
-		this.initialWindowSize = initialWindowSize;
-		this.maxPacketSize = maxPacketSize;
-		this.host_to_connect = host_to_connect;
-		this.port_to_connect = port_to_connect;
-		this.originator_IP_address = originator_IP_address;
-		this.originator_port = originator_port;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN);
-			tw.writeString("direct-tcpip");
-			tw.writeUINT32(channelID);
-			tw.writeUINT32(initialWindowSize);
-			tw.writeUINT32(maxPacketSize);
-			tw.writeString(host_to_connect);
-			tw.writeUINT32(port_to_connect);
-			tw.writeString(originator_IP_address);
-			tw.writeUINT32(originator_port);
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketOpenSessionChannel.java b/app/src/main/java/com/trilead/ssh2/packets/PacketOpenSessionChannel.java
deleted file mode 100644
index a75ea63..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketOpenSessionChannel.java
+++ /dev/null
@@ -1,62 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketOpenSessionChannel.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketOpenSessionChannel.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketOpenSessionChannel
-{
-	byte[] payload;
-
-	int channelID;
-	int initialWindowSize;
-	int maxPacketSize;
-
-	public PacketOpenSessionChannel(int channelID, int initialWindowSize,
-			int maxPacketSize)
-	{
-		this.channelID = channelID;
-		this.initialWindowSize = initialWindowSize;
-		this.maxPacketSize = maxPacketSize;
-	}
-
-	public PacketOpenSessionChannel(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN)
-			throw new IOException("This is not a SSH_MSG_CHANNEL_OPEN! ("
-					+ packet_type + ")");
-
-		channelID = tr.readUINT32();
-		initialWindowSize = tr.readUINT32();
-		maxPacketSize = tr.readUINT32();
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN);
-			tw.writeString("session");
-			tw.writeUINT32(channelID);
-			tw.writeUINT32(initialWindowSize);
-			tw.writeUINT32(maxPacketSize);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketServiceAccept.java b/app/src/main/java/com/trilead/ssh2/packets/PacketServiceAccept.java
deleted file mode 100644
index d5c9a90..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketServiceAccept.java
+++ /dev/null
@@ -1,61 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketServiceAccept.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketServiceAccept.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class PacketServiceAccept
-{
-	byte[] payload;
-
-	String serviceName;
-
-	public PacketServiceAccept(String serviceName)
-	{
-		this.serviceName = serviceName;
-	}
-
-	public PacketServiceAccept(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_SERVICE_ACCEPT)
-			throw new IOException("This is not a SSH_MSG_SERVICE_ACCEPT! (" + packet_type + ")");
-
-		/* Be clever in case the server is not. Some servers seem to violate RFC4253 */
-
-		if (tr.remain() > 0)
-		{
-			serviceName = tr.readString();
-		}
-		else
-		{
-			serviceName = "";
-		}
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_SERVICE_ACCEPT packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_SERVICE_ACCEPT);
-			tw.writeString(serviceName);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketServiceRequest.java b/app/src/main/java/com/trilead/ssh2/packets/PacketServiceRequest.java
deleted file mode 100644
index c2d2065..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketServiceRequest.java
+++ /dev/null
@@ -1,52 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketServiceRequest.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketServiceRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketServiceRequest
-{
-	byte[] payload;
-
-	String serviceName;
-
-	public PacketServiceRequest(String serviceName)
-	{
-		this.serviceName = serviceName;
-	}
-
-	public PacketServiceRequest(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_SERVICE_REQUEST)
-			throw new IOException("This is not a SSH_MSG_SERVICE_REQUEST! ("
-					+ packet_type + ")");
-
-		serviceName = tr.readString();
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_SERVICE_REQUEST packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_SERVICE_REQUEST);
-			tw.writeString(serviceName);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionExecCommand.java b/app/src/main/java/com/trilead/ssh2/packets/PacketSessionExecCommand.java
deleted file mode 100644
index 84efa5d..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionExecCommand.java
+++ /dev/null
@@ -1,39 +0,0 @@
-package com.trilead.ssh2.packets;
-
-
-/**
- * PacketSessionExecCommand.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionExecCommand.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionExecCommand
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-	public boolean wantReply;
-	public String command;
-
-	public PacketSessionExecCommand(int recipientChannelID, boolean wantReply, String command)
-	{
-		this.recipientChannelID = recipientChannelID;
-		this.wantReply = wantReply;
-		this.command = command;
-	}
-	
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeString("exec");
-			tw.writeBoolean(wantReply);
-			tw.writeString(command);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyRequest.java b/app/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyRequest.java
deleted file mode 100644
index d9c3d59..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyRequest.java
+++ /dev/null
@@ -1,57 +0,0 @@
-package com.trilead.ssh2.packets;
-
-
-/**
- * PacketSessionPtyRequest.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionPtyRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionPtyRequest
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-	public boolean wantReply;
-	public String term;
-	public int character_width;
-	public int character_height;
-	public int pixel_width;
-	public int pixel_height;
-	public byte[] terminal_modes;
-
-	public PacketSessionPtyRequest(int recipientChannelID, boolean wantReply, String term,
-			int character_width, int character_height, int pixel_width, int pixel_height,
-			byte[] terminal_modes)
-	{
-		this.recipientChannelID = recipientChannelID;
-		this.wantReply = wantReply;
-		this.term = term;
-		this.character_width = character_width;
-		this.character_height = character_height;
-		this.pixel_width = pixel_width;
-		this.pixel_height = pixel_height;
-		this.terminal_modes = terminal_modes;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeString("pty-req");
-			tw.writeBoolean(wantReply);
-			tw.writeString(term);
-			tw.writeUINT32(character_width);
-			tw.writeUINT32(character_height);
-			tw.writeUINT32(pixel_width);
-			tw.writeUINT32(pixel_height);
-			tw.writeString(terminal_modes, 0, terminal_modes.length);
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java b/app/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java
deleted file mode 100644
index 1e3b558..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package com.trilead.ssh2.packets;
-
-public class PacketSessionPtyResize {
-	byte[] payload;
-
-	public int recipientChannelID;
-	public int width;
-	public int height;
-	public int pixelWidth;
-	public int pixelHeight;
-
-	public PacketSessionPtyResize(int recipientChannelID, int width, int height, int pixelWidth, int pixelHeight) {
-		this.recipientChannelID = recipientChannelID;
-		this.width = width;
-		this.height = height;
-		this.pixelWidth = pixelWidth;
-		this.pixelHeight = pixelHeight;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeString("window-change");
-			tw.writeBoolean(false);
-			tw.writeUINT32(width);
-			tw.writeUINT32(height);
-			tw.writeUINT32(pixelWidth);
-			tw.writeUINT32(pixelHeight);
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
-
-
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionStartShell.java b/app/src/main/java/com/trilead/ssh2/packets/PacketSessionStartShell.java
deleted file mode 100644
index e5add01..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionStartShell.java
+++ /dev/null
@@ -1,36 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-/**
- * PacketSessionStartShell.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionStartShell.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionStartShell
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-	public boolean wantReply;
-
-	public PacketSessionStartShell(int recipientChannelID, boolean wantReply)
-	{
-		this.recipientChannelID = recipientChannelID;
-		this.wantReply = wantReply;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeString("shell");
-			tw.writeBoolean(wantReply);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionSubsystemRequest.java b/app/src/main/java/com/trilead/ssh2/packets/PacketSessionSubsystemRequest.java
deleted file mode 100644
index cdc3a8c..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionSubsystemRequest.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package com.trilead.ssh2.packets;
-
-
-/**
- * PacketSessionSubsystemRequest.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionSubsystemRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionSubsystemRequest
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-	public boolean wantReply;
-	public String subsystem;
-
-	public PacketSessionSubsystemRequest(int recipientChannelID, boolean wantReply, String subsystem)
-	{
-		this.recipientChannelID = recipientChannelID;
-		this.wantReply = wantReply;
-		this.subsystem = subsystem;
-	}
-	
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeString("subsystem");
-			tw.writeBoolean(wantReply);
-			tw.writeString(subsystem);
-			payload = tw.getBytes();
-			tw.getBytes(payload);
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionX11Request.java b/app/src/main/java/com/trilead/ssh2/packets/PacketSessionX11Request.java
deleted file mode 100644
index 26479c7..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketSessionX11Request.java
+++ /dev/null
@@ -1,53 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-/**
- * PacketSessionX11Request.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketSessionX11Request.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketSessionX11Request
-{
-	byte[] payload;
-
-	public int recipientChannelID;
-	public boolean wantReply;
-
-	public boolean singleConnection;
-	String x11AuthenticationProtocol;
-	String x11AuthenticationCookie;
-	int x11ScreenNumber;
-
-	public PacketSessionX11Request(int recipientChannelID, boolean wantReply, boolean singleConnection,
-			String x11AuthenticationProtocol, String x11AuthenticationCookie, int x11ScreenNumber)
-	{
-		this.recipientChannelID = recipientChannelID;
-		this.wantReply = wantReply;
-
-		this.singleConnection = singleConnection;
-		this.x11AuthenticationProtocol = x11AuthenticationProtocol;
-		this.x11AuthenticationCookie = x11AuthenticationCookie;
-		this.x11ScreenNumber = x11ScreenNumber;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
-			tw.writeUINT32(recipientChannelID);
-			tw.writeString("x11-req");
-			tw.writeBoolean(wantReply);
-
-			tw.writeBoolean(singleConnection);
-			tw.writeString(x11AuthenticationProtocol);
-			tw.writeString(x11AuthenticationCookie);
-			tw.writeUINT32(x11ScreenNumber);
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthBanner.java b/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthBanner.java
deleted file mode 100644
index 8ad8c3b..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthBanner.java
+++ /dev/null
@@ -1,60 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthBanner.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthBanner.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthBanner
-{
-	byte[] payload;
-
-	String message;
-	String language;
-
-	public PacketUserauthBanner(String message, String language)
-	{
-		this.message = message;
-		this.language = language;
-	}
-
-	public String getBanner()
-	{
-		return message;
-	}
-	
-	public PacketUserauthBanner(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_USERAUTH_BANNER)
-			throw new IOException("This is not a SSH_MSG_USERAUTH_BANNER! (" + packet_type + ")");
-
-		message = tr.readString("UTF-8");
-		language = tr.readString();
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_USERAUTH_BANNER);
-			tw.writeString(message);
-			tw.writeString(language);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthFailure.java b/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthFailure.java
deleted file mode 100644
index fd4a726..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthFailure.java
+++ /dev/null
@@ -1,53 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthBanner.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthFailure.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthFailure
-{
-	byte[] payload;
-
-	String[] authThatCanContinue;
-	boolean partialSuccess;
-
-	public PacketUserauthFailure(String[] authThatCanContinue, boolean partialSuccess)
-	{
-		this.authThatCanContinue = authThatCanContinue;
-		this.partialSuccess = partialSuccess;
-	}
-
-	public PacketUserauthFailure(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_USERAUTH_FAILURE)
-			throw new IOException("This is not a SSH_MSG_USERAUTH_FAILURE! (" + packet_type + ")");
-
-		authThatCanContinue = tr.readNameList();
-		partialSuccess = tr.readBoolean();
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_USERAUTH_FAILURE packet!");
-	}
-
-	public String[] getAuthThatCanContinue()
-	{
-		return authThatCanContinue;
-	}
-
-	public boolean isPartialSuccess()
-	{
-		return partialSuccess;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoRequest.java b/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoRequest.java
deleted file mode 100644
index e1606d1..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoRequest.java
+++ /dev/null
@@ -1,84 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthInfoRequest.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthInfoRequest.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthInfoRequest
-{
-	byte[] payload;
-
-	String name;
-	String instruction;
-	String languageTag;
-	int numPrompts;
-
-	String prompt[];
-	boolean echo[];
-
-	public PacketUserauthInfoRequest(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_USERAUTH_INFO_REQUEST)
-			throw new IOException("This is not a SSH_MSG_USERAUTH_INFO_REQUEST! (" + packet_type + ")");
-
-		name = tr.readString();
-		instruction = tr.readString();
-		languageTag = tr.readString();
-
-		numPrompts = tr.readUINT32();
-
-		prompt = new String[numPrompts];
-		echo = new boolean[numPrompts];
-
-		for (int i = 0; i < numPrompts; i++)
-		{
-			prompt[i] = tr.readString();
-			echo[i] = tr.readBoolean();
-		}
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_USERAUTH_INFO_REQUEST packet!");
-	}
-
-	public boolean[] getEcho()
-	{
-		return echo;
-	}
-
-	public String getInstruction()
-	{
-		return instruction;
-	}
-
-	public String getLanguageTag()
-	{
-		return languageTag;
-	}
-
-	public String getName()
-	{
-		return name;
-	}
-
-	public int getNumPrompts()
-	{
-		return numPrompts;
-	}
-
-	public String[] getPrompt()
-	{
-		return prompt;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoResponse.java b/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoResponse.java
deleted file mode 100644
index e8795d4..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthInfoResponse.java
+++ /dev/null
@@ -1,35 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-/**
- * PacketUserauthInfoResponse.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthInfoResponse.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthInfoResponse
-{
-	byte[] payload;
-
-	String[] responses;
-
-	public PacketUserauthInfoResponse(String[] responses)
-	{
-		this.responses = responses;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_USERAUTH_INFO_RESPONSE);
-			tw.writeUINT32(responses.length);
-			for (int i = 0; i < responses.length; i++)
-				tw.writeString(responses[i]);
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestInteractive.java b/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestInteractive.java
deleted file mode 100644
index 83e9f49..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestInteractive.java
+++ /dev/null
@@ -1,42 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-/**
- * PacketUserauthRequestInteractive.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthRequestInteractive.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthRequestInteractive
-{
-	byte[] payload;
-
-	String userName;
-	String serviceName;
-	String[] submethods;
-
-	public PacketUserauthRequestInteractive(String serviceName, String user, String[] submethods)
-	{
-		this.serviceName = serviceName;
-		this.userName = user;
-		this.submethods = submethods;
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
-			tw.writeString(userName);
-			tw.writeString(serviceName);
-			tw.writeString("keyboard-interactive");
-			tw.writeString(""); // draft-ietf-secsh-newmodes-04.txt says that
-			// the language tag should be empty.
-			tw.writeNameList(submethods);
-
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestNone.java b/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestNone.java
deleted file mode 100644
index d786003..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestNone.java
+++ /dev/null
@@ -1,61 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthRequestPassword.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthRequestNone.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthRequestNone
-{
-	byte[] payload;
-
-	String userName;
-	String serviceName;
-
-	public PacketUserauthRequestNone(String serviceName, String user)
-	{
-		this.serviceName = serviceName;
-		this.userName = user;
-	}
-
-	public PacketUserauthRequestNone(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST)
-			throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! (" + packet_type + ")");
-
-		userName = tr.readString();
-		serviceName = tr.readString();
-
-		String method = tr.readString();
-
-		if (method.equals("none") == false)
-			throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST with type none!");
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
-			tw.writeString(userName);
-			tw.writeString(serviceName);
-			tw.writeString("none");
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPassword.java b/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPassword.java
deleted file mode 100644
index 83047dd..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPassword.java
+++ /dev/null
@@ -1,67 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthRequestPassword.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthRequestPassword.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthRequestPassword
-{
-	byte[] payload;
-
-	String userName;
-	String serviceName;
-	String password;
-
-	public PacketUserauthRequestPassword(String serviceName, String user, String pass)
-	{
-		this.serviceName = serviceName;
-		this.userName = user;
-		this.password = pass;
-	}
-
-	public PacketUserauthRequestPassword(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST)
-			throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! (" + packet_type + ")");
-
-		userName = tr.readString();
-		serviceName = tr.readString();
-
-		String method = tr.readString();
-
-		if (method.equals("password") == false)
-			throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST with type password!");
-
-		/* ... */
-		
-		if (tr.remain() != 0)
-			throw new IOException("Padding in SSH_MSG_USERAUTH_REQUEST packet!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
-			tw.writeString(userName);
-			tw.writeString(serviceName);
-			tw.writeString("password");
-			tw.writeBoolean(false);
-			tw.writeString(password);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPublicKey.java b/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPublicKey.java
deleted file mode 100644
index 6462864..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/PacketUserauthRequestPublicKey.java
+++ /dev/null
@@ -1,65 +0,0 @@
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-
-/**
- * PacketUserauthRequestPublicKey.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: PacketUserauthRequestPublicKey.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class PacketUserauthRequestPublicKey
-{
-	byte[] payload;
-
-	String userName;
-	String serviceName;
-	String password;
-	String pkAlgoName;
-	byte[] pk;
-	byte[] sig;
-
-	public PacketUserauthRequestPublicKey(String serviceName, String user,
-			String pkAlgorithmName, byte[] pk, byte[] sig)
-	{
-		this.serviceName = serviceName;
-		this.userName = user;
-		this.pkAlgoName = pkAlgorithmName;
-		this.pk = pk;
-		this.sig = sig;
-	}
-
-	public PacketUserauthRequestPublicKey(byte payload[], int off, int len) throws IOException
-	{
-		this.payload = new byte[len];
-		System.arraycopy(payload, off, this.payload, 0, len);
-
-		TypesReader tr = new TypesReader(payload, off, len);
-
-		int packet_type = tr.readByte();
-
-		if (packet_type != Packets.SSH_MSG_USERAUTH_REQUEST)
-			throw new IOException("This is not a SSH_MSG_USERAUTH_REQUEST! ("
-					+ packet_type + ")");
-
-		throw new IOException("Not implemented!");
-	}
-
-	public byte[] getPayload()
-	{
-		if (payload == null)
-		{
-			TypesWriter tw = new TypesWriter();
-			tw.writeByte(Packets.SSH_MSG_USERAUTH_REQUEST);
-			tw.writeString(userName);
-			tw.writeString(serviceName);
-			tw.writeString("publickey");
-			tw.writeBoolean(true);
-			tw.writeString(pkAlgoName);
-			tw.writeString(pk, 0, pk.length);
-			tw.writeString(sig, 0, sig.length);
-			payload = tw.getBytes();
-		}
-		return payload;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/Packets.java b/app/src/main/java/com/trilead/ssh2/packets/Packets.java
deleted file mode 100644
index 6989286..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/Packets.java
+++ /dev/null
@@ -1,149 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-/**
- * Packets.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Packets.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class Packets
-{
-	public static final int SSH_MSG_DISCONNECT = 1;
-	public static final int SSH_MSG_IGNORE = 2;
-	public static final int SSH_MSG_UNIMPLEMENTED = 3;
-	public static final int SSH_MSG_DEBUG = 4;
-	public static final int SSH_MSG_SERVICE_REQUEST = 5;
-	public static final int SSH_MSG_SERVICE_ACCEPT = 6;
-
-	public static final int SSH_MSG_KEXINIT = 20;
-	public static final int SSH_MSG_NEWKEYS = 21;
-
-	public static final int SSH_MSG_KEXDH_INIT = 30;
-	public static final int SSH_MSG_KEXDH_REPLY = 31;
-
-	public static final int SSH_MSG_KEX_DH_GEX_REQUEST_OLD = 30;
-	public static final int SSH_MSG_KEX_DH_GEX_REQUEST = 34;
-	public static final int SSH_MSG_KEX_DH_GEX_GROUP = 31;
-	public static final int SSH_MSG_KEX_DH_GEX_INIT = 32;
-	public static final int SSH_MSG_KEX_DH_GEX_REPLY = 33;
-
-	public static final int SSH_MSG_USERAUTH_REQUEST = 50;
-	public static final int SSH_MSG_USERAUTH_FAILURE = 51;
-	public static final int SSH_MSG_USERAUTH_SUCCESS = 52;
-	public static final int SSH_MSG_USERAUTH_BANNER = 53;
-	public static final int SSH_MSG_USERAUTH_INFO_REQUEST = 60;
-	public static final int SSH_MSG_USERAUTH_INFO_RESPONSE = 61;
-
-	public static final int SSH_MSG_GLOBAL_REQUEST = 80;
-	public static final int SSH_MSG_REQUEST_SUCCESS = 81;
-	public static final int SSH_MSG_REQUEST_FAILURE = 82;
-
-	public static final int SSH_MSG_CHANNEL_OPEN = 90;
-	public static final int SSH_MSG_CHANNEL_OPEN_CONFIRMATION = 91;
-	public static final int SSH_MSG_CHANNEL_OPEN_FAILURE = 92;
-	public static final int SSH_MSG_CHANNEL_WINDOW_ADJUST = 93;
-	public static final int SSH_MSG_CHANNEL_DATA = 94;
-	public static final int SSH_MSG_CHANNEL_EXTENDED_DATA = 95;
-	public static final int SSH_MSG_CHANNEL_EOF = 96;
-	public static final int SSH_MSG_CHANNEL_CLOSE = 97;
-	public static final int SSH_MSG_CHANNEL_REQUEST = 98;
-	public static final int SSH_MSG_CHANNEL_SUCCESS = 99;
-	public static final int SSH_MSG_CHANNEL_FAILURE = 100;
-
-	public static final int SSH_EXTENDED_DATA_STDERR = 1;
-
-	public static final int SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT = 1;
-	public static final int SSH_DISCONNECT_PROTOCOL_ERROR = 2;
-	public static final int SSH_DISCONNECT_KEY_EXCHANGE_FAILED = 3;
-	public static final int SSH_DISCONNECT_RESERVED = 4;
-	public static final int SSH_DISCONNECT_MAC_ERROR = 5;
-	public static final int SSH_DISCONNECT_COMPRESSION_ERROR = 6;
-	public static final int SSH_DISCONNECT_SERVICE_NOT_AVAILABLE = 7;
-	public static final int SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED = 8;
-	public static final int SSH_DISCONNECT_HOST_KEY_NOT_VERIFIABLE = 9;
-	public static final int SSH_DISCONNECT_CONNECTION_LOST = 10;
-	public static final int SSH_DISCONNECT_BY_APPLICATION = 11;
-	public static final int SSH_DISCONNECT_TOO_MANY_CONNECTIONS = 12;
-	public static final int SSH_DISCONNECT_AUTH_CANCELLED_BY_USER = 13;
-	public static final int SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE = 14;
-	public static final int SSH_DISCONNECT_ILLEGAL_USER_NAME = 15;
-
-	public static final int SSH_OPEN_ADMINISTRATIVELY_PROHIBITED = 1;
-	public static final int SSH_OPEN_CONNECT_FAILED = 2;
-	public static final int SSH_OPEN_UNKNOWN_CHANNEL_TYPE = 3;
-	public static final int SSH_OPEN_RESOURCE_SHORTAGE = 4;
-
-	private static final String[] reverseNames = new String[101];
-
-	static
-	{
-		reverseNames[1] = "SSH_MSG_DISCONNECT";
-		reverseNames[2] = "SSH_MSG_IGNORE";
-		reverseNames[3] = "SSH_MSG_UNIMPLEMENTED";
-		reverseNames[4] = "SSH_MSG_DEBUG";
-		reverseNames[5] = "SSH_MSG_SERVICE_REQUEST";
-		reverseNames[6] = "SSH_MSG_SERVICE_ACCEPT";
-
-		reverseNames[20] = "SSH_MSG_KEXINIT";
-		reverseNames[21] = "SSH_MSG_NEWKEYS";
-
-		reverseNames[30] = "SSH_MSG_KEXDH_INIT";
-		reverseNames[31] = "SSH_MSG_KEXDH_REPLY/SSH_MSG_KEX_DH_GEX_GROUP";
-		reverseNames[32] = "SSH_MSG_KEX_DH_GEX_INIT";
-		reverseNames[33] = "SSH_MSG_KEX_DH_GEX_REPLY";
-		reverseNames[34] = "SSH_MSG_KEX_DH_GEX_REQUEST";
-
-		reverseNames[50] = "SSH_MSG_USERAUTH_REQUEST";
-		reverseNames[51] = "SSH_MSG_USERAUTH_FAILURE";
-		reverseNames[52] = "SSH_MSG_USERAUTH_SUCCESS";
-		reverseNames[53] = "SSH_MSG_USERAUTH_BANNER";
-
-		reverseNames[60] = "SSH_MSG_USERAUTH_INFO_REQUEST";
-		reverseNames[61] = "SSH_MSG_USERAUTH_INFO_RESPONSE";
-
-		reverseNames[80] = "SSH_MSG_GLOBAL_REQUEST";
-		reverseNames[81] = "SSH_MSG_REQUEST_SUCCESS";
-		reverseNames[82] = "SSH_MSG_REQUEST_FAILURE";
-
-		reverseNames[90] = "SSH_MSG_CHANNEL_OPEN";
-		reverseNames[91] = "SSH_MSG_CHANNEL_OPEN_CONFIRMATION";
-		reverseNames[92] = "SSH_MSG_CHANNEL_OPEN_FAILURE";
-		reverseNames[93] = "SSH_MSG_CHANNEL_WINDOW_ADJUST";
-		reverseNames[94] = "SSH_MSG_CHANNEL_DATA";
-		reverseNames[95] = "SSH_MSG_CHANNEL_EXTENDED_DATA";
-		reverseNames[96] = "SSH_MSG_CHANNEL_EOF";
-		reverseNames[97] = "SSH_MSG_CHANNEL_CLOSE";
-		reverseNames[98] = "SSH_MSG_CHANNEL_REQUEST";
-		reverseNames[99] = "SSH_MSG_CHANNEL_SUCCESS";
-		reverseNames[100] = "SSH_MSG_CHANNEL_FAILURE";
-	}
-
-	public static final String getMessageName(int type)
-	{
-		String res = null;
-
-		if ((type >= 0) && (type < reverseNames.length))
-		{
-			res = reverseNames[type];
-		}
-
-		return (res == null) ? ("UNKNOWN MSG " + type) : res;
-	}
-
-	//	public static final void debug(String tag, byte[] msg)
-	//	{
-	//		System.err.println(tag + " Type: " + msg[0] + ", LEN: " + msg.length);
-	//
-	//		for (int i = 0; i < msg.length; i++)
-	//		{
-	//			if (((msg[i] >= 'a') && (msg[i] <= 'z')) || ((msg[i] >= 'A') && (msg[i] <= 'Z'))
-	//					|| ((msg[i] >= '0') && (msg[i] <= '9')) || (msg[i] == ' '))
-	//				System.err.print((char) msg[i]);
-	//			else
-	//				System.err.print(".");
-	//		}
-	//		System.err.println();
-	//		System.err.flush();
-	//	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/TypesReader.java b/app/src/main/java/com/trilead/ssh2/packets/TypesReader.java
deleted file mode 100644
index 28f5363..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/TypesReader.java
+++ /dev/null
@@ -1,177 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import java.io.IOException;
-import java.math.BigInteger;
-
-import com.trilead.ssh2.util.Tokenizer;
-
-
-/**
- * TypesReader.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TypesReader.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class TypesReader
-{
-	byte[] arr;
-	int pos = 0;
-	int max = 0;
-
-	public TypesReader(byte[] arr)
-	{
-		this.arr = arr;
-		pos = 0;
-		max = arr.length;
-	}
-
-	public TypesReader(byte[] arr, int off)
-	{
-		this.arr = arr;
-		this.pos = off;
-		this.max = arr.length;
-
-		if ((pos < 0) || (pos > arr.length))
-			throw new IllegalArgumentException("Illegal offset.");
-	}
-
-	public TypesReader(byte[] arr, int off, int len)
-	{
-		this.arr = arr;
-		this.pos = off;
-		this.max = off + len;
-
-		if ((pos < 0) || (pos > arr.length))
-			throw new IllegalArgumentException("Illegal offset.");
-
-		if ((max < 0) || (max > arr.length))
-			throw new IllegalArgumentException("Illegal length.");
-	}
-
-	public int readByte() throws IOException
-	{
-		if (pos >= max)
-			throw new IOException("Packet too short.");
-
-		return (arr[pos++] & 0xff);
-	}
-
-	public byte[] readBytes(int len) throws IOException
-	{
-		if ((pos + len) > max)
-			throw new IOException("Packet too short.");
-
-		byte[] res = new byte[len];
-
-		System.arraycopy(arr, pos, res, 0, len);
-		pos += len;
-
-		return res;
-	}
-
-	public void readBytes(byte[] dst, int off, int len) throws IOException
-	{
-		if ((pos + len) > max)
-			throw new IOException("Packet too short.");
-
-		System.arraycopy(arr, pos, dst, off, len);
-		pos += len;
-	}
-
-	public boolean readBoolean() throws IOException
-	{
-		if (pos >= max)
-			throw new IOException("Packet too short.");
-
-		return (arr[pos++] != 0);
-	}
-
-	public int readUINT32() throws IOException
-	{
-		if ((pos + 4) > max)
-			throw new IOException("Packet too short.");
-
-		return ((arr[pos++] & 0xff) << 24) | ((arr[pos++] & 0xff) << 16) | ((arr[pos++] & 0xff) << 8)
-				| (arr[pos++] & 0xff);
-	}
-
-	public long readUINT64() throws IOException
-	{
-		if ((pos + 8) > max)
-			throw new IOException("Packet too short.");
-
-		long high = ((arr[pos++] & 0xff) << 24) | ((arr[pos++] & 0xff) << 16) | ((arr[pos++] & 0xff) << 8)
-				| (arr[pos++] & 0xff); /* sign extension may take place - will be shifted away =) */
-
-		long low = ((arr[pos++] & 0xff) << 24) | ((arr[pos++] & 0xff) << 16) | ((arr[pos++] & 0xff) << 8)
-				| (arr[pos++] & 0xff); /* sign extension may take place - handle below */
-
-		return (high << 32) | (low & 0xffffffffl); /* see Java language spec (15.22.1, 5.6.2) */
-	}
-
-	public BigInteger readMPINT() throws IOException
-	{
-		BigInteger b;
-
-		byte raw[] = readByteString();
-
-		if (raw.length == 0)
-			b = BigInteger.ZERO;
-		else
-			b = new BigInteger(raw);
-
-		return b;
-	}
-
-	public byte[] readByteString() throws IOException
-	{
-		int len = readUINT32();
-
-		if ((len + pos) > max)
-			throw new IOException("Malformed SSH byte string.");
-
-		byte[] res = new byte[len];
-		System.arraycopy(arr, pos, res, 0, len);
-		pos += len;
-		return res;
-	}
-
-	public String readString(String charsetName) throws IOException
-	{
-		int len = readUINT32();
-
-		if ((len + pos) > max)
-			throw new IOException("Malformed SSH string.");
-
-		String res = (charsetName == null) ? new String(arr, pos, len) : new String(arr, pos, len, charsetName);
-		pos += len;
-
-		return res;
-	}
-
-	public String readString() throws IOException
-	{
-		int len = readUINT32();
-
-		if ((len + pos) > max)
-			throw new IOException("Malformed SSH string.");
-
-		String res = new String(arr, pos, len, "ISO-8859-1");
-		
-		pos += len;
-
-		return res;
-	}
-
-	public String[] readNameList() throws IOException
-	{
-		return Tokenizer.parseTokens(readString(), ',');
-	}
-
-	public int remain()
-	{
-		return max - pos;
-	}
-
-}
diff --git a/app/src/main/java/com/trilead/ssh2/packets/TypesWriter.java b/app/src/main/java/com/trilead/ssh2/packets/TypesWriter.java
deleted file mode 100644
index 9f7336b..0000000
--- a/app/src/main/java/com/trilead/ssh2/packets/TypesWriter.java
+++ /dev/null
@@ -1,169 +0,0 @@
-
-package com.trilead.ssh2.packets;
-
-import java.io.UnsupportedEncodingException;
-import java.math.BigInteger;
-
-/**
- * TypesWriter.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TypesWriter.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class TypesWriter
-{
-	byte arr[];
-	int pos;
-
-	public TypesWriter()
-	{
-		arr = new byte[256];
-		pos = 0;
-	}
-
-	private void resize(int len)
-	{
-		byte new_arr[] = new byte[len];
-		System.arraycopy(arr, 0, new_arr, 0, arr.length);
-		arr = new_arr;
-	}
-
-	public int length()
-	{
-		return pos;
-	}
-
-	public byte[] getBytes()
-	{
-		byte[] dst = new byte[pos];
-		System.arraycopy(arr, 0, dst, 0, pos);
-		return dst;
-	}
-
-	public void getBytes(byte dst[])
-	{
-		System.arraycopy(arr, 0, dst, 0, pos);
-	}
-
-	public void writeUINT32(int val, int off)
-	{
-		if ((off + 4) > arr.length)
-			resize(off + 32);
-
-		arr[off++] = (byte) (val >> 24);
-		arr[off++] = (byte) (val >> 16);
-		arr[off++] = (byte) (val >> 8);
-		arr[off++] = (byte) val;
-	}
-
-	public void writeUINT32(int val)
-	{
-		writeUINT32(val, pos);
-		pos += 4;
-	}
-
-	public void writeUINT64(long val)
-	{
-		if ((pos + 8) > arr.length)
-			resize(arr.length + 32);
-
-		arr[pos++] = (byte) (val >> 56);
-		arr[pos++] = (byte) (val >> 48);
-		arr[pos++] = (byte) (val >> 40);
-		arr[pos++] = (byte) (val >> 32);
-		arr[pos++] = (byte) (val >> 24);
-		arr[pos++] = (byte) (val >> 16);
-		arr[pos++] = (byte) (val >> 8);
-		arr[pos++] = (byte) val;
-	}
-
-	public void writeBoolean(boolean v)
-	{
-		if ((pos + 1) > arr.length)
-			resize(arr.length + 32);
-
-		arr[pos++] = v ? (byte) 1 : (byte) 0;
-	}
-
-	public void writeByte(int v, int off)
-	{
-		if ((off + 1) > arr.length)
-			resize(off + 32);
-
-		arr[off] = (byte) v;
-	}
-
-	public void writeByte(int v)
-	{
-		writeByte(v, pos);
-		pos++;
-	}
-
-	public void writeMPInt(BigInteger b)
-	{
-		byte raw[] = b.toByteArray();
-
-		if ((raw.length == 1) && (raw[0] == 0))
-			writeUINT32(0); /* String with zero bytes of data */
-		else
-			writeString(raw, 0, raw.length);
-	}
-
-	public void writeBytes(byte[] buff)
-	{
-		writeBytes(buff, 0, buff.length);
-	}
-
-	public void writeBytes(byte[] buff, int off, int len)
-	{
-		if ((pos + len) > arr.length)
-			resize(arr.length + len + 32);
-
-		System.arraycopy(buff, off, arr, pos, len);
-		pos += len;
-	}
-
-	public void writeString(byte[] buff, int off, int len)
-	{
-		writeUINT32(len);
-		writeBytes(buff, off, len);
-	}
-
-	public void writeString(String v)
-	{
-		byte[] b;
-
-		try
-		{
-			/* All Java JVMs must support ISO-8859-1 */
-			b = v.getBytes("ISO-8859-1");
-		}
-		catch (UnsupportedEncodingException ignore)
-		{
-			b = v.getBytes();
-		}
-
-		writeUINT32(b.length);
-		writeBytes(b, 0, b.length);
-	}
-
-	public void writeString(String v, String charsetName) throws UnsupportedEncodingException
-	{
-		byte[] b = (charsetName == null) ? v.getBytes() : v.getBytes(charsetName);
-
-		writeUINT32(b.length);
-		writeBytes(b, 0, b.length);
-	}
-
-	public void writeNameList(String v[])
-	{
-		StringBuffer sb = new StringBuffer();
-		for (int i = 0; i < v.length; i++)
-		{
-			if (i > 0)
-				sb.append(',');
-			sb.append(v[i]);
-		}
-		writeString(sb.toString());
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/sftp/AttrTextHints.java b/app/src/main/java/com/trilead/ssh2/sftp/AttrTextHints.java
deleted file mode 100644
index 19f0525..0000000
--- a/app/src/main/java/com/trilead/ssh2/sftp/AttrTextHints.java
+++ /dev/null
@@ -1,38 +0,0 @@
-
-package com.trilead.ssh2.sftp;
-
-/**
- * 
- * Values for the 'text-hint' field in the SFTP ATTRS data type.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttrTextHints.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttrTextHints
-{
-	/**
-	 * The server knows the file is a text file, and should be opened
-	 * using the SSH_FXF_ACCESS_TEXT_MODE flag.
-	 */
-	public static final int SSH_FILEXFER_ATTR_KNOWN_TEXT = 0x00;
-
-	/**
-	 * The server has applied a heuristic or other mechanism and
-	 * believes that the file should be opened with the
-	 * SSH_FXF_ACCESS_TEXT_MODE flag.
-	 */
-	public static final int SSH_FILEXFER_ATTR_GUESSED_TEXT = 0x01;
-
-	/**
-	 * The server knows the file has binary content.
-	 */
-	public static final int SSH_FILEXFER_ATTR_KNOWN_BINARY = 0x02;
-
-	/**
-	 * The server has applied a heuristic or other mechanism and
-	 * believes has binary content, and should not be opened with the
-	 * SSH_FXF_ACCESS_TEXT_MODE flag.
-	 */
-	public static final int SSH_FILEXFER_ATTR_GUESSED_BINARY = 0x03;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/sftp/AttribBits.java b/app/src/main/java/com/trilead/ssh2/sftp/AttribBits.java
deleted file mode 100644
index b143613..0000000
--- a/app/src/main/java/com/trilead/ssh2/sftp/AttribBits.java
+++ /dev/null
@@ -1,129 +0,0 @@
-
-package com.trilead.ssh2.sftp;
-
-/**
- * 
- * SFTP Attribute Bits for the "attrib-bits" and "attrib-bits-valid" fields
- * of the SFTP ATTR data type.
- * <p>
- * Yes, these are the "attrib-bits", even though they have "_FLAGS_" in
- * their name. Don't ask - I did not invent it.
- * <p>
- * "<i>These fields, taken together, reflect various attributes of the file
- * or directory, on the server. Bits not set in 'attrib-bits-valid' MUST be
- * ignored in the 'attrib-bits' field.  This allows both the server and the
- * client to communicate only the bits it knows about without inadvertently
- * twiddling bits they don't understand.</i>"
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttribBits.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttribBits
-{
-	/**
-	 * Advisory, read-only bit. This bit is not part of the access
-	 * control information on the file, but is rather an advisory field
-	 * indicating that the file should not be written.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_READONLY = 0x00000001;
-
-	/**
-	 * The file is part of the operating system.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_SYSTEM = 0x00000002;
-
-	/**
-	 * File SHOULD NOT be shown to user unless specifically requested.
-	 * For example, most UNIX systems SHOULD set this bit if the filename
-	 * begins with a 'period'. This bit may be read-only (see section 5.4 of
-	 * the SFTP standard draft). Most UNIX systems will not allow this to be
-	 * changed.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_HIDDEN = 0x00000004;
-
-	/**
-	 * This attribute applies only to directories. This attribute is
-	 * always read-only, and cannot be modified. This attribute means
-	 * that files and directory names in this directory should be compared
-	 * without regard to case.
-	 * <p>
-	 * It is recommended that where possible, the server's filesystem be
-	 * allowed to do comparisons. For example, if a client wished to prompt
-	 * a user before overwriting a file, it should not compare the new name
-	 * with the previously retrieved list of names in the directory. Rather,
-	 * it should first try to create the new file by specifying
-	 * SSH_FXF_CREATE_NEW flag. Then, if this fails and returns
-	 * SSH_FX_FILE_ALREADY_EXISTS, it should prompt the user and then retry
-	 * the create specifying SSH_FXF_CREATE_TRUNCATE.
-	 * <p>
-	 * Unless otherwise specified, filenames are assumed to be case sensitive.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_CASE_INSENSITIVE = 0x00000008;
-
-	/**
-	 * The file should be included in backup / archive operations.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_ARCHIVE = 0x00000010;
-
-	/**
-	 * The file is stored on disk using file-system level transparent
-	 * encryption. This flag does not affect the file data on the wire
-	 * (for either READ or WRITE requests.)
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_ENCRYPTED = 0x00000020;
-
-	/**
-	 * The file is stored on disk using file-system level transparent
-	 * compression. This flag does not affect the file data on the wire.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_COMPRESSED = 0x00000040;
-
-	/**
-	 * The file is a sparse file; this means that file blocks that have
-	 * not been explicitly written are not stored on disk. For example, if
-	 * a client writes a buffer at 10 M from the beginning of the file,
-	 * the blocks between the previous EOF marker and the 10 M offset would
-	 * not consume physical disk space.
-	 * <p>
-	 * Some servers may store all files as sparse files, in which case
-	 * this bit will be unconditionally set. Other servers may not have
-	 * a mechanism for determining if the file is sparse, and so the file
-	 * MAY be stored sparse even if this flag is not set.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_SPARSE = 0x00000080;
-
-	/**
-	 * Opening the file without either the SSH_FXF_ACCESS_APPEND_DATA or
-	 * the SSH_FXF_ACCESS_APPEND_DATA_ATOMIC flag (see section 8.1.1.3
-	 * of the SFTP standard draft) MUST result in an
-	 * SSH_FX_INVALID_PARAMETER error.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_APPEND_ONLY = 0x00000100;
-
-	/**
-	 * The file cannot be deleted or renamed, no hard link can be created
-	 * to this file, and no data can be written to the file.
-	 * <p>
-	 * This bit implies a stronger level of protection than
-	 * SSH_FILEXFER_ATTR_FLAGS_READONLY, the file permission mask or ACLs.
-	 * Typically even the superuser cannot write to immutable files, and
-	 * only the superuser can set or remove the bit.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_IMMUTABLE = 0x00000200;
-
-	/**
-	 * When the file is modified, the changes are written synchronously
-	 * to the disk.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_SYNC = 0x00000400;
-
-	/**
-	 * The server MAY include this bit in a directory listing or realpath
-	 * response. It indicates there was a failure in the translation to UTF-8.
-	 * If this flag is included, the server SHOULD also include the
-	 * UNTRANSLATED_NAME attribute.
-	 */
-	public static final int SSH_FILEXFER_ATTR_FLAGS_TRANSLATION_ERR = 0x00000800;
-
-}
diff --git a/app/src/main/java/com/trilead/ssh2/sftp/AttribFlags.java b/app/src/main/java/com/trilead/ssh2/sftp/AttribFlags.java
deleted file mode 100644
index ea27871..0000000
--- a/app/src/main/java/com/trilead/ssh2/sftp/AttribFlags.java
+++ /dev/null
@@ -1,112 +0,0 @@
-
-package com.trilead.ssh2.sftp;
-
-/**
- * 
- * Attribute Flags. The 'valid-attribute-flags' field in
- * the SFTP ATTRS data type specifies which of the fields are actually present.
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttribFlags.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttribFlags
-{
-	/**
-	 * Indicates that the 'allocation-size' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_SIZE = 0x00000001;
-
-	/** Protocol version 6:
-	 * 0x00000002 was used in a previous version of this protocol.
-	 * It is now a reserved value and MUST NOT appear in the mask.
-	 * Some future version of this protocol may reuse this value.
-	 */
-	public static final int SSH_FILEXFER_ATTR_V3_UIDGID = 0x00000002;
-
-	/**
-	 * Indicates that the 'permissions' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_PERMISSIONS = 0x00000004;
-
-	/**
-	 * Indicates that the 'atime' and 'mtime' field are present
-	 * (protocol v3).
-	 */
-	public static final int SSH_FILEXFER_ATTR_V3_ACMODTIME = 0x00000008;
-
-	/**
-	 * Indicates that the 'atime' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_ACCESSTIME = 0x00000008;
-
-	/**
-	 * Indicates that the 'createtime' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_CREATETIME = 0x00000010;
-
-	/**
-	 * Indicates that the 'mtime' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_MODIFYTIME = 0x00000020;
-
-	/**
-	 * Indicates that the 'acl' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_ACL = 0x00000040;
-
-	/**
-	 * Indicates that the 'owner' and 'group' fields are present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_OWNERGROUP = 0x00000080;
-
-	/**
-	 * Indicates that additionally to the 'atime', 'createtime',
-	 * 'mtime' and 'ctime' fields (if present), there is also
-	 * 'atime-nseconds', 'createtime-nseconds',  'mtime-nseconds' 
-	 * and 'ctime-nseconds'.
-	 */
-	public static final int SSH_FILEXFER_ATTR_SUBSECOND_TIMES = 0x00000100;
-
-	/**
-	 * Indicates that the 'attrib-bits' and 'attrib-bits-valid'
-	 * fields are present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_BITS = 0x00000200;
-
-	/**
-	 * Indicates that the 'allocation-size' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_ALLOCATION_SIZE = 0x00000400;
-
-	/**
-	 * Indicates that the 'text-hint' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_TEXT_HINT = 0x00000800;
-
-	/**
-	 * Indicates that the 'mime-type' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_MIME_TYPE = 0x00001000;
-
-	/**
-	 * Indicates that the 'link-count' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_LINK_COUNT = 0x00002000;
-
-	/**
-	 * Indicates that the 'untranslated-name' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_UNTRANSLATED_NAME = 0x00004000;
-
-	/**
-	 * Indicates that the 'ctime' field is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_CTIME = 0x00008000;
-
-	/**
-	 * Indicates that the 'extended-count' field (and probablby some
-	 * 'extensions') is present.
-	 */
-	public static final int SSH_FILEXFER_ATTR_EXTENDED = 0x80000000;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/sftp/AttribPermissions.java b/app/src/main/java/com/trilead/ssh2/sftp/AttribPermissions.java
deleted file mode 100644
index 558aa6f..0000000
--- a/app/src/main/java/com/trilead/ssh2/sftp/AttribPermissions.java
+++ /dev/null
@@ -1,32 +0,0 @@
-
-package com.trilead.ssh2.sftp;
-
-/**
- * 
- * Permissions for the 'permissions' field in the SFTP ATTRS data type.
- * <p>
- * "<i>The 'permissions' field contains a bit mask specifying file permissions.
- * These permissions correspond to the st_mode field of the stat structure
- * defined by POSIX [IEEE.1003-1.1996].</i>"
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttribPermissions.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttribPermissions
-{
-	/* Octal values! */
-
-	public static final int S_IRUSR = 0400;
-	public static final int S_IWUSR = 0200;
-	public static final int S_IXUSR = 0100;
-	public static final int S_IRGRP = 0040;
-	public static final int S_IWGRP = 0020;
-	public static final int S_IXGRP = 0010;
-	public static final int S_IROTH = 0004;
-	public static final int S_IWOTH = 0002;
-	public static final int S_IXOTH = 0001;
-	public static final int S_ISUID = 04000;
-	public static final int S_ISGID = 02000;
-	public static final int S_ISVTX = 01000;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/sftp/AttribTypes.java b/app/src/main/java/com/trilead/ssh2/sftp/AttribTypes.java
deleted file mode 100644
index e2f4169..0000000
--- a/app/src/main/java/com/trilead/ssh2/sftp/AttribTypes.java
+++ /dev/null
@@ -1,28 +0,0 @@
-
-package com.trilead.ssh2.sftp;
-
-/**
- * 
- * Types for the 'type' field in the SFTP ATTRS data type.
- * <p>
- * "<i>On a POSIX system, these values would be derived from the mode field
- * of the stat structure.  SPECIAL should be used for files that are of
- * a known type which cannot be expressed in the protocol. UNKNOWN
- * should be used if the type is not known.</i>"
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: AttribTypes.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class AttribTypes
-{
-	public static final int SSH_FILEXFER_TYPE_REGULAR = 1;
-	public static final int SSH_FILEXFER_TYPE_DIRECTORY = 2;
-	public static final int SSH_FILEXFER_TYPE_SYMLINK = 3;
-	public static final int SSH_FILEXFER_TYPE_SPECIAL = 4;
-	public static final int SSH_FILEXFER_TYPE_UNKNOWN = 5;
-	public static final int SSH_FILEXFER_TYPE_SOCKET = 6;
-	public static final int SSH_FILEXFER_TYPE_CHAR_DEVICE = 7;
-	public static final int SSH_FILEXFER_TYPE_BLOCK_DEVICE = 8;
-	public static final int SSH_FILEXFER_TYPE_FIFO = 9;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/sftp/ErrorCodes.java b/app/src/main/java/com/trilead/ssh2/sftp/ErrorCodes.java
deleted file mode 100644
index 7317a00..0000000
--- a/app/src/main/java/com/trilead/ssh2/sftp/ErrorCodes.java
+++ /dev/null
@@ -1,104 +0,0 @@
-
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * SFTP Error Codes
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ErrorCodes.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class ErrorCodes
-{
-	public static final int SSH_FX_OK = 0;
-	public static final int SSH_FX_EOF = 1;
-	public static final int SSH_FX_NO_SUCH_FILE = 2;
-	public static final int SSH_FX_PERMISSION_DENIED = 3;
-	public static final int SSH_FX_FAILURE = 4;
-	public static final int SSH_FX_BAD_MESSAGE = 5;
-	public static final int SSH_FX_NO_CONNECTION = 6;
-	public static final int SSH_FX_CONNECTION_LOST = 7;
-	public static final int SSH_FX_OP_UNSUPPORTED = 8;
-	public static final int SSH_FX_INVALID_HANDLE = 9;
-	public static final int SSH_FX_NO_SUCH_PATH = 10;
-	public static final int SSH_FX_FILE_ALREADY_EXISTS = 11;
-	public static final int SSH_FX_WRITE_PROTECT = 12;
-	public static final int SSH_FX_NO_MEDIA = 13;
-	public static final int SSH_FX_NO_SPACE_ON_FILESYSTEM = 14;
-	public static final int SSH_FX_QUOTA_EXCEEDED = 15;
-	public static final int SSH_FX_UNKNOWN_PRINCIPAL = 16;
-	public static final int SSH_FX_LOCK_CONFLICT = 17;
-	public static final int SSH_FX_DIR_NOT_EMPTY = 18;
-	public static final int SSH_FX_NOT_A_DIRECTORY = 19;
-	public static final int SSH_FX_INVALID_FILENAME = 20;
-	public static final int SSH_FX_LINK_LOOP = 21;
-	public static final int SSH_FX_CANNOT_DELETE = 22;
-	public static final int SSH_FX_INVALID_PARAMETER = 23;
-	public static final int SSH_FX_FILE_IS_A_DIRECTORY = 24;
-	public static final int SSH_FX_BYTE_RANGE_LOCK_CONFLICT = 25;
-	public static final int SSH_FX_BYTE_RANGE_LOCK_REFUSED = 26;
-	public static final int SSH_FX_DELETE_PENDING = 27;
-	public static final int SSH_FX_FILE_CORRUPT = 28;
-	public static final int SSH_FX_OWNER_INVALID = 29;
-	public static final int SSH_FX_GROUP_INVALID = 30;
-	public static final int SSH_FX_NO_MATCHING_BYTE_RANGE_LOCK = 31;
-
-	private static final String[][] messages = {
-
-			{ "SSH_FX_OK", "Indicates successful completion of the operation." },
-			{ "SSH_FX_EOF",
-					"An attempt to read past the end-of-file was made; or, there are no more directory entries to return." },
-			{ "SSH_FX_NO_SUCH_FILE", "A reference was made to a file which does not exist." },
-			{ "SSH_FX_PERMISSION_DENIED", "The user does not have sufficient permissions to perform the operation." },
-			{ "SSH_FX_FAILURE", "An error occurred, but no specific error code exists to describe the failure." },
-			{ "SSH_FX_BAD_MESSAGE", "A badly formatted packet or other SFTP protocol incompatibility was detected." },
-			{ "SSH_FX_NO_CONNECTION", "There is no connection to the server." },
-			{ "SSH_FX_CONNECTION_LOST", "The connection to the server was lost." },
-			{ "SSH_FX_OP_UNSUPPORTED",
-					"An attempted operation could not be completed by the server because the server does not support the operation." },
-			{ "SSH_FX_INVALID_HANDLE", "The handle value was invalid." },
-			{ "SSH_FX_NO_SUCH_PATH", "The file path does not exist or is invalid." },
-			{ "SSH_FX_FILE_ALREADY_EXISTS", "The file already exists." },
-			{ "SSH_FX_WRITE_PROTECT", "The file is on read-only media, or the media is write protected." },
-			{ "SSH_FX_NO_MEDIA",
-					"The requested operation cannot be completed because there is no media available in the drive." },
-			{ "SSH_FX_NO_SPACE_ON_FILESYSTEM",
-					"The requested operation cannot be completed because there is insufficient free space on the filesystem." },
-			{ "SSH_FX_QUOTA_EXCEEDED",
-					"The operation cannot be completed because it would exceed the user's storage quota." },
-			{
-					"SSH_FX_UNKNOWN_PRINCIPAL",
-					"A principal referenced by the request (either the 'owner', 'group', or 'who' field of an ACL), was unknown. The error specific data contains the problematic names." },
-			{ "SSH_FX_LOCK_CONFLICT", "The file could not be opened because it is locked by another process." },
-			{ "SSH_FX_DIR_NOT_EMPTY", "The directory is not empty." },
-			{ "SSH_FX_NOT_A_DIRECTORY", "The specified file is not a directory." },
-			{ "SSH_FX_INVALID_FILENAME", "The filename is not valid." },
-			{ "SSH_FX_LINK_LOOP",
-					"Too many symbolic links encountered or, an SSH_FXF_NOFOLLOW open encountered a symbolic link as the final component." },
-			{ "SSH_FX_CANNOT_DELETE",
-					"The file cannot be deleted. One possible reason is that the advisory READONLY attribute-bit is set." },
-			{ "SSH_FX_INVALID_PARAMETER",
-					"One of the parameters was out of range, or the parameters specified cannot be used together." },
-			{ "SSH_FX_FILE_IS_A_DIRECTORY",
-					"The specified file was a directory in a context where a directory cannot be used." },
-			{ "SSH_FX_BYTE_RANGE_LOCK_CONFLICT",
-					" A read or write operation failed because another process's mandatory byte-range lock overlaps with the request." },
-			{ "SSH_FX_BYTE_RANGE_LOCK_REFUSED", "A request for a byte range lock was refused." },
-			{ "SSH_FX_DELETE_PENDING", "An operation was attempted on a file for which a delete operation is pending." },
-			{ "SSH_FX_FILE_CORRUPT", "The file is corrupt; an filesystem integrity check should be run." },
-			{ "SSH_FX_OWNER_INVALID", "The principal specified can not be assigned as an owner of a file." },
-			{ "SSH_FX_GROUP_INVALID", "The principal specified can not be assigned as the primary group of a file." },
-			{ "SSH_FX_NO_MATCHING_BYTE_RANGE_LOCK",
-					"The requested operation could not be completed because the	specifed byte range lock has not been granted." },
-
-	};
-
-	public static final String[] getDescription(int errorCode)
-	{
-		if ((errorCode < 0) || (errorCode >= messages.length))
-			return null;
-
-		return messages[errorCode];
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/sftp/OpenFlags.java b/app/src/main/java/com/trilead/ssh2/sftp/OpenFlags.java
deleted file mode 100644
index b2979b9..0000000
--- a/app/src/main/java/com/trilead/ssh2/sftp/OpenFlags.java
+++ /dev/null
@@ -1,223 +0,0 @@
-
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * SFTP Open Flags.
- * 
- * The following table is provided to assist in mapping POSIX semantics
- * to equivalent SFTP file open parameters:
- * <p>
- * TODO: This comment should be moved to the open method.
- * <p>
- * <ul>
- * <li>O_RDONLY
- * <ul><li>desired-access = READ_DATA | READ_ATTRIBUTES</li></ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_WRONLY
- * <ul><li>desired-access = WRITE_DATA | WRITE_ATTRIBUTES</li></ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_RDWR
- * <ul><li>desired-access = READ_DATA | READ_ATTRIBUTES | WRITE_DATA | WRITE_ATTRIBUTES</li></ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_APPEND
- * <ul>
- * <li>desired-access = WRITE_DATA | WRITE_ATTRIBUTES | APPEND_DATA</li>
- * <li>flags = SSH_FXF_ACCESS_APPEND_DATA and or SSH_FXF_ACCESS_APPEND_DATA_ATOMIC</li>
- * </ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_CREAT
- * <ul>
- * <li>flags = SSH_FXF_OPEN_OR_CREATE</li>
- * </ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_TRUNC
- * <ul>
- * <li>flags = SSH_FXF_TRUNCATE_EXISTING</li>
- * </ul>
- * </li>
- * </ul>
- * <ul>
- * <li>O_TRUNC|O_CREATE
- * <ul>
- * <li>flags = SSH_FXF_CREATE_TRUNCATE</li>
- * </ul>
- * </li>
- * </ul>
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: OpenFlags.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- */
-public class OpenFlags
-{
-	/**
-	 * Disposition is a 3 bit field that controls how the file is opened.
-	 * The server MUST support these bits (possible enumaration values:
-	 * SSH_FXF_CREATE_NEW, SSH_FXF_CREATE_TRUNCATE, SSH_FXF_OPEN_EXISTING,
-	 * SSH_FXF_OPEN_OR_CREATE or SSH_FXF_TRUNCATE_EXISTING).
-	 */
-	public static final int SSH_FXF_ACCESS_DISPOSITION = 0x00000007;
-
-	/**
-	 * A new file is created; if the file already exists, the server
-	 * MUST return status SSH_FX_FILE_ALREADY_EXISTS.
-	 */
-	public static final int SSH_FXF_CREATE_NEW = 0x00000000;
-
-	/**
-	 * A new file is created; if the file already exists, it is opened
-	 * and truncated.
-	 */
-	public static final int SSH_FXF_CREATE_TRUNCATE = 0x00000001;
-
-	/**
-	 * An existing file is opened.  If the file does not exist, the
-	 * server MUST return SSH_FX_NO_SUCH_FILE. If a directory in the
-	 * path does not exist, the server SHOULD return
-	 * SSH_FX_NO_SUCH_PATH. It is also acceptable if the server
-	 * returns SSH_FX_NO_SUCH_FILE in this case.
-	 */
-	public static final int SSH_FXF_OPEN_EXISTING = 0x00000002;
-
-	/**
-	 * If the file exists, it is opened. If the file does not exist,
-	 * it is created.
-	 */
-	public static final int SSH_FXF_OPEN_OR_CREATE = 0x00000003;
-
-	/**
-	 * An existing file is opened and truncated. If the file does not
-	 * exist, the server MUST return the same error codes as defined
-	 * for SSH_FXF_OPEN_EXISTING.
-	 */
-	public static final int SSH_FXF_TRUNCATE_EXISTING = 0x00000004;
-
-	/**
-	 * Data is always written at the end of the file. The offset field
-	 * of the SSH_FXP_WRITE requests are ignored.
-	 * <p>
-	 * Data is not required to be appended atomically. This means that
-	 * if multiple writers attempt to append data simultaneously, data
-	 * from the first may be lost. However, data MAY be appended
-	 * atomically.
-	 */
-	public static final int SSH_FXF_ACCESS_APPEND_DATA = 0x00000008;
-
-	/**
-	 * Data is always written at the end of the file. The offset field
-	 * of the SSH_FXP_WRITE requests are ignored.
-	 * <p>
-	 * Data MUST be written atomically so that there is no chance that
-	 * multiple appenders can collide and result in data being lost.
-	 * <p>
-	 * If both append flags are specified, the server SHOULD use atomic
-	 * append if it is available, but SHOULD use non-atomic appends
-	 * otherwise. The server SHOULD NOT fail the request in this case.
-	 */
-	public static final int SSH_FXF_ACCESS_APPEND_DATA_ATOMIC = 0x00000010;
-
-	/**
-	 * Indicates that the server should treat the file as text and
-	 * convert it to the canonical newline convention in use.
-	 * (See Determining Server Newline Convention in section 5.3 in the
-	 * SFTP standard draft).
-	 * <p>
-	 * When a file is opened with this flag, the offset field in the read
-	 * and write functions is ignored.
-	 * <p>
-	 * Servers MUST process multiple, parallel reads and writes correctly
-	 * in this mode.  Naturally, it is permissible for them to do this by
-	 * serializing the requests.
-	 * <p>
-	 * Clients SHOULD use the SSH_FXF_ACCESS_APPEND_DATA flag to append
-	 * data to a text file rather then using write with a calculated offset.
-	 */
-	public static final int SSH_FXF_ACCESS_TEXT_MODE = 0x00000020;
-
-	/**
-	 * The server MUST guarantee that no other handle has been opened
-	 * with ACE4_READ_DATA access, and that no other handle will be
-	 * opened with ACE4_READ_DATA access until the client closes the
-	 * handle. (This MUST apply both to other clients and to other
-	 * processes on the server.)
-	 * <p>
-	 * If there is a conflicting lock the server MUST return
-	 * SSH_FX_LOCK_CONFLICT.  If the server cannot make the locking
-	 * guarantee, it MUST return SSH_FX_OP_UNSUPPORTED.
-	 * <p>
-	 * Other handles MAY be opened for ACE4_WRITE_DATA or any other
-	 * combination of accesses, as long as ACE4_READ_DATA is not included
-	 * in the mask.
-	 */
-	public static final int SSH_FXF_ACCESS_BLOCK_READ = 0x00000040;
-
-	/**
-	 * The server MUST guarantee that no other handle has been opened
-	 * with ACE4_WRITE_DATA or ACE4_APPEND_DATA access, and that no other
-	 * handle will be opened with ACE4_WRITE_DATA or ACE4_APPEND_DATA
-	 * access until the client closes the handle. (This MUST apply both
-	 * to other clients and to other processes on the server.)
-	 * <p>
-	 * If there is a conflicting lock the server MUST return
-	 * SSH_FX_LOCK_CONFLICT. If the server cannot make the locking
-	 * guarantee, it MUST return SSH_FX_OP_UNSUPPORTED.
-	 * <p>
-	 * Other handles MAY be opened for ACE4_READ_DATA or any other
-	 * combination of accesses, as long as neither ACE4_WRITE_DATA nor
-	 * ACE4_APPEND_DATA are included in the mask.
-	 */
-	public static final int SSH_FXF_ACCESS_BLOCK_WRITE = 0x00000080;
-
-	/**
-	 * The server MUST guarantee that no other handle has been opened
-	 * with ACE4_DELETE access, opened with the
-	 * SSH_FXF_ACCESS_DELETE_ON_CLOSE flag set, and that no other handle
-	 * will be opened with ACE4_DELETE access or with the
-	 * SSH_FXF_ACCESS_DELETE_ON_CLOSE flag set, and that the file itself
-	 * is not deleted in any other way until the client closes the handle.
-	 * <p>
-	 * If there is a conflicting lock the server MUST return
-	 * SSH_FX_LOCK_CONFLICT.  If the server cannot make the locking
-	 * guarantee, it MUST return SSH_FX_OP_UNSUPPORTED.
-	 */
-	public static final int SSH_FXF_ACCESS_BLOCK_DELETE = 0x00000100;
-
-	/**
-	 * If this bit is set, the above BLOCK modes are advisory. In advisory
-	 * mode, only other accesses that specify a BLOCK mode need be
-	 * considered when determining whether the BLOCK can be granted,
-	 * and the server need not prevent I/O operations that violate the
-	 * block mode.
-	 * <p>
-	 * The server MAY perform mandatory locking even if the BLOCK_ADVISORY
-	 * bit is set.
-	 */
-	public static final int SSH_FXF_ACCESS_BLOCK_ADVISORY = 0x00000200;
-
-	/**
-	 * If the final component of the path is a symlink, then the open
-	 * MUST fail, and the error SSH_FX_LINK_LOOP MUST be returned.
-	 */
-	public static final int SSH_FXF_ACCESS_NOFOLLOW = 0x00000400;
-
-	/**
-	 * The file should be deleted when the last handle to it is closed.
-	 * (The last handle may not be an sftp-handle.)  This MAY be emulated
-	 * by a server if the OS doesn't support it by deleting the file when
-	 * this handle is closed.
-	 * <p>
-	 * It is implementation specific whether the directory entry is
-	 * removed immediately or when the handle is closed.
-	 */
-	public static final int SSH_FXF_ACCESS_DELETE_ON_CLOSE = 0x00000800;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/sftp/Packet.java b/app/src/main/java/com/trilead/ssh2/sftp/Packet.java
deleted file mode 100644
index 444af90..0000000
--- a/app/src/main/java/com/trilead/ssh2/sftp/Packet.java
+++ /dev/null
@@ -1,43 +0,0 @@
-
-package com.trilead.ssh2.sftp;
-
-/**
- *
- * SFTP Paket Types
- *
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Packet.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
- *
- */
-public class Packet
-{
-	public static final int SSH_FXP_INIT = 1;
-	public static final int SSH_FXP_VERSION = 2;
-	public static final int SSH_FXP_OPEN = 3;
-	public static final int SSH_FXP_CLOSE = 4;
-	public static final int SSH_FXP_READ = 5;
-	public static final int SSH_FXP_WRITE = 6;
-	public static final int SSH_FXP_LSTAT = 7;
-	public static final int SSH_FXP_FSTAT = 8;
-	public static final int SSH_FXP_SETSTAT = 9;
-	public static final int SSH_FXP_FSETSTAT = 10;
-	public static final int SSH_FXP_OPENDIR = 11;
-	public static final int SSH_FXP_READDIR = 12;
-	public static final int SSH_FXP_REMOVE = 13;
-	public static final int SSH_FXP_MKDIR = 14;
-	public static final int SSH_FXP_RMDIR = 15;
-	public static final int SSH_FXP_REALPATH = 16;
-	public static final int SSH_FXP_STAT = 17;
-	public static final int SSH_FXP_RENAME = 18;
-	public static final int SSH_FXP_READLINK = 19;
-	public static final int SSH_FXP_SYMLINK = 20;
-	
-	public static final int SSH_FXP_STATUS = 101;
-	public static final int SSH_FXP_HANDLE = 102;
-	public static final int SSH_FXP_DATA = 103;
-	public static final int SSH_FXP_NAME = 104;
-	public static final int SSH_FXP_ATTRS = 105;
-	
-	public static final int SSH_FXP_EXTENDED = 200;
-	public static final int SSH_FXP_EXTENDED_REPLY = 201;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java b/app/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java
deleted file mode 100644
index 6fb6ddb..0000000
--- a/app/src/main/java/com/trilead/ssh2/signature/DSASHA1Verify.java
+++ /dev/null
@@ -1,255 +0,0 @@
-
-package com.trilead.ssh2.signature;
-
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.InvalidKeyException;
-import java.security.KeyFactory;
-import java.security.NoSuchAlgorithmException;
-import java.security.SecureRandom;
-import java.security.Signature;
-import java.security.SignatureException;
-import java.security.interfaces.DSAParams;
-import java.security.interfaces.DSAPrivateKey;
-import java.security.interfaces.DSAPublicKey;
-import java.security.spec.DSAPublicKeySpec;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.KeySpec;
-
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.packets.TypesWriter;
-
-
-/**
- * DSASHA1Verify.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: DSASHA1Verify.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class DSASHA1Verify
-{
-	private static final Logger log = Logger.getLogger(DSASHA1Verify.class);
-
-	public static DSAPublicKey decodeSSHDSAPublicKey(byte[] key) throws IOException
-	{
-		TypesReader tr = new TypesReader(key);
-
-		String key_format = tr.readString();
-
-		if (key_format.equals("ssh-dss") == false)
-			throw new IllegalArgumentException("This is not a ssh-dss public key!");
-
-		BigInteger p = tr.readMPINT();
-		BigInteger q = tr.readMPINT();
-		BigInteger g = tr.readMPINT();
-		BigInteger y = tr.readMPINT();
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in DSA public key!");
-
-		try {
-			KeyFactory kf = KeyFactory.getInstance("DSA");
-
-			KeySpec ks = new DSAPublicKeySpec(y, p, q, g);
-			return (DSAPublicKey) kf.generatePublic(ks);
-		} catch (NoSuchAlgorithmException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		} catch (InvalidKeySpecException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		}
-	}
-
-	public static byte[] encodeSSHDSAPublicKey(DSAPublicKey pk) throws IOException
-	{
-		TypesWriter tw = new TypesWriter();
-
-		tw.writeString("ssh-dss");
-
-		DSAParams params = pk.getParams();
-		tw.writeMPInt(params.getP());
-		tw.writeMPInt(params.getQ());
-		tw.writeMPInt(params.getG());
-		tw.writeMPInt(pk.getY());
-
-		return tw.getBytes();
-	}
-
-	/**
-	 * Convert from Java's signature ASN.1 encoding to the SSH spec.
-	 * <p>
-	 * Java ASN.1 encoding:
-	 * <pre>
-	 * SEQUENCE ::= {
-	 *    r INTEGER,
-	 *    s INTEGER
-	 * }
-	 * </pre>
-	 */
-	public static byte[] encodeSSHDSASignature(byte[] ds)
-	{
-		TypesWriter tw = new TypesWriter();
-
-		tw.writeString("ssh-dss");
-
-		int len, index;
-
-		index = 3;
-		len = ds[index++] & 0xff;
-		byte[] r = new byte[len];
-		System.arraycopy(ds, index, r, 0, r.length);
-
-		index = index + len + 1;
-		len = ds[index++] & 0xff;
-		byte[] s = new byte[len];
-		System.arraycopy(ds, index, s, 0, s.length);
-
-		byte[] a40 = new byte[40];
-
-		/* Patch (unsigned) r and s into the target array. */
-
-		int r_copylen = (r.length < 20) ? r.length : 20;
-		int s_copylen = (s.length < 20) ? s.length : 20;
-
-		System.arraycopy(r, r.length - r_copylen, a40, 20 - r_copylen, r_copylen);
-		System.arraycopy(s, s.length - s_copylen, a40, 40 - s_copylen, s_copylen);
-
-		tw.writeString(a40, 0, 40);
-
-		return tw.getBytes();
-	}
-
-	public static byte[] decodeSSHDSASignature(byte[] sig) throws IOException
-	{
-		byte[] rsArray = null;
-		
-		if (sig.length == 40)
-		{
-			/* OK, another broken SSH server. */
-			rsArray = sig;
-		}
-		else
-		{
-			/* Hopefully a server obeying the standard... */
-			TypesReader tr = new TypesReader(sig);
-
-			String sig_format = tr.readString();
-			if (sig_format.equals("ssh-dss") == false)
-				throw new IOException("Peer sent wrong signature format");
-
-			rsArray = tr.readByteString();
-
-			if (rsArray.length != 40)
-				throw new IOException("Peer sent corrupt signature");
-
-			if (tr.remain() != 0)
-				throw new IOException("Padding in DSA signature!");
-		}
-
-		int i = 0;
-		int j = 0;
-		byte[] tmp;
-
-		if (rsArray[0] == 0 && rsArray[1] == 0 && rsArray[2] == 0) {
-			j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000)
-					| ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff);
-			i += j;
-			j = ((rsArray[i++] << 24) & 0xff000000) | ((rsArray[i++] << 16) & 0x00ff0000)
-					| ((rsArray[i++] << 8) & 0x0000ff00) | ((rsArray[i++]) & 0x000000ff);
-			tmp = new byte[j];
-			System.arraycopy(rsArray, i, tmp, 0, j);
-			rsArray = tmp;
-		}
-
-		/* ASN.1 */
-		int frst = ((rsArray[0] & 0x80) != 0 ? 1 : 0);
-		int scnd = ((rsArray[20] & 0x80) != 0 ? 1 : 0);
-
-		/* Calculate output length */
-		int length = rsArray.length + 6 + frst + scnd;
-		tmp = new byte[length];
-
-		/* DER-encoding to match Java */
-		tmp[0] = (byte) 0x30;
-
-			if (rsArray.length != 40)
-				throw new IOException("Peer sent corrupt signature");
-		/* Calculate length */
-		tmp[1] = (byte) 0x2c;
-		tmp[1] += frst;
-		tmp[1] += scnd;
-
-		/* First item */
-		tmp[2] = (byte) 0x02;
-
-		/* First item length */
-		tmp[3] = (byte) 0x14;
-		tmp[3] += frst;
-
-		/* Copy in the data for first item */
-		System.arraycopy(rsArray, 0, tmp, 4 + frst, 20);
-
-		/* Second item */
-		tmp[4 + tmp[3]] = (byte) 0x02;
-
-		/* Second item length */
-		tmp[5 + tmp[3]] = (byte) 0x14;
-		tmp[5 + tmp[3]] += scnd;
-
-		/* Copy in the data for the second item */
-		System.arraycopy(rsArray, 20, tmp, 6 + tmp[3] + scnd, 20);
-
-		/* Swap buffers */
-		rsArray = tmp;
-
-		return rsArray;
-	}
-
-	public static boolean verifySignature(byte[] message, byte[] ds, DSAPublicKey dpk) throws IOException
-	{
-		try {
-			Signature s = Signature.getInstance("SHA1withDSA");
-			s.initVerify(dpk);
-			s.update(message);
-			return s.verify(ds);
-		} catch (NoSuchAlgorithmException e) {
-			IOException ex = new IOException("No such algorithm");
-			ex.initCause(e);
-			throw ex;
-		} catch (InvalidKeyException e) {
-			IOException ex = new IOException("No such algorithm");
-			ex.initCause(e);
-			throw ex;
-		} catch (SignatureException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		}
-	}
-
-	public static byte[] generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd) throws IOException
-	{
-		try {
-			Signature s = Signature.getInstance("SHA1withDSA");
-			s.initSign(pk);
-			s.update(message);
-			return s.sign();
-		} catch (NoSuchAlgorithmException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		} catch (InvalidKeyException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		} catch (SignatureException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/signature/ECDSASHA2Verify.java b/app/src/main/java/com/trilead/ssh2/signature/ECDSASHA2Verify.java
deleted file mode 100644
index 281a59d..0000000
--- a/app/src/main/java/com/trilead/ssh2/signature/ECDSASHA2Verify.java
+++ /dev/null
@@ -1,487 +0,0 @@
-/**
- *
- */
-package com.trilead.ssh2.signature;
-
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.math.BigInteger;
-import java.security.InvalidKeyException;
-import java.security.KeyFactory;
-import java.security.NoSuchAlgorithmException;
-import java.security.Signature;
-import java.security.SignatureException;
-import java.security.interfaces.ECPrivateKey;
-import java.security.interfaces.ECPublicKey;
-import java.security.spec.ECFieldFp;
-import java.security.spec.ECParameterSpec;
-import java.security.spec.ECPoint;
-import java.security.spec.ECPublicKeySpec;
-import java.security.spec.EllipticCurve;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.KeySpec;
-import java.util.Map;
-import java.util.TreeMap;
-
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.packets.TypesWriter;
-
-/**
- * @author Kenny Root
- *
- */
-public class ECDSASHA2Verify {
-	private static final Logger log = Logger.getLogger(ECDSASHA2Verify.class);
-
-	public static final String ECDSA_SHA2_PREFIX = "ecdsa-sha2-";
-
-	private static final String NISTP256 = "nistp256";
-	private static final String NISTP256_OID = "1.2.840.10045.3.1.7";
-	private static final String NISTP384 = "nistp384";
-	private static final String NISTP384_OID = "1.3.132.0.34";
-	private static final String NISTP521 = "nistp521";
-	private static final String NISTP521_OID = "1.3.132.0.35";
-
-	private static final Map<String, ECParameterSpec> CURVES = new TreeMap<String, ECParameterSpec>();
-	static {
-		CURVES.put(NISTP256, EllipticCurves.nistp256);
-		CURVES.put(NISTP384, EllipticCurves.nistp384);
-		CURVES.put(NISTP521, EllipticCurves.nistp521);
-	}
-
-	private static final Map<Integer, String> CURVE_SIZES = new TreeMap<Integer, String>();
-	static {
-		CURVE_SIZES.put(256, NISTP256);
-		CURVE_SIZES.put(384, NISTP384);
-		CURVE_SIZES.put(521, NISTP521);
-	}
-
-	private static final Map<String, String> CURVE_OIDS = new TreeMap<String, String>();
-	static {
-		CURVE_OIDS.put(NISTP256_OID, NISTP256);
-		CURVE_OIDS.put(NISTP384_OID, NISTP256);
-		CURVE_OIDS.put(NISTP521_OID, NISTP256);
-	}
-
-	public static int[] getCurveSizes() {
-		int[] keys = new int[CURVE_SIZES.size()];
-		int i = 0;
-		for (Integer n : CURVE_SIZES.keySet().toArray(new Integer[keys.length])) {
-			keys[i++] = n;
-		}
-		return keys;
-	}
-
-	public static ECParameterSpec getCurveForSize(int size) {
-		final String name = CURVE_SIZES.get(size);
-		if (name == null) {
-			return null;
-		}
-		return CURVES.get(name);
-	}
-
-	public static ECPublicKey decodeSSHECDSAPublicKey(byte[] key) throws IOException
-	{
-		TypesReader tr = new TypesReader(key);
-
-		String key_format = tr.readString();
-
-		if (key_format.startsWith(ECDSA_SHA2_PREFIX) == false)
-			throw new IllegalArgumentException("This is not an ECDSA public key");
-
-		String curveName = tr.readString();
-		byte[] groupBytes = tr.readByteString();
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in ECDSA public key!");
-
-		if (key_format.equals(ECDSA_SHA2_PREFIX + curveName) == false) {
-			throw new IOException("Key format is inconsistent with curve name: " + key_format
-					+ " != " + curveName);
-		}
-
-		ECParameterSpec params = CURVES.get(curveName);
-		if (params == null) {
-			throw new IOException("Curve is not supported: " + curveName);
-		}
-
-		ECPoint group = ECDSASHA2Verify.decodeECPoint(groupBytes, params.getCurve());
-		if (group == null) {
-			throw new IOException("Invalid ECDSA group");
-		}
-
-		KeySpec keySpec = new ECPublicKeySpec(group, params);
-
-		try {
-			KeyFactory kf = KeyFactory.getInstance("EC");
-			return (ECPublicKey) kf.generatePublic(keySpec);
-		} catch (NoSuchAlgorithmException nsae) {
-			IOException ioe = new IOException("No EC KeyFactory available");
-			ioe.initCause(nsae);
-			throw ioe;
-		} catch (InvalidKeySpecException ikse) {
-			IOException ioe = new IOException("No EC KeyFactory available");
-			ioe.initCause(ikse);
-			throw ioe;
-		}
-	}
-
-	public static byte[] encodeSSHECDSAPublicKey(ECPublicKey key) throws IOException {
-		TypesWriter tw = new TypesWriter();
-
-		String curveName = getCurveName(key.getParams());
-
-		String keyFormat = ECDSA_SHA2_PREFIX + curveName;
-
-		tw.writeString(keyFormat);
-
-		tw.writeString(curveName);
-
-		byte[] encoded = encodeECPoint(key.getW(), key.getParams().getCurve());
-		tw.writeString(encoded, 0, encoded.length);
-
-		return tw.getBytes();
-	}
-
-	public static String getCurveName(ECParameterSpec params) throws IOException {
-		int fieldSize = getCurveSize(params);
-		final String curveName = getCurveName(fieldSize);
-		if (curveName == null) {
-			throw new IOException("invalid curve size " + fieldSize);
-		}
-		return curveName;
-	}
-
-	public static String getCurveName(int fieldSize) {
-		String curveName = CURVE_SIZES.get(fieldSize);
-		if (curveName == null) {
-			return null;
-		}
-		return curveName;
-	}
-
-	public static int getCurveSize(ECParameterSpec params) {
-		return params.getCurve().getField().getFieldSize();
-	}
-
-	public static ECParameterSpec getCurveForOID(String oid) {
-		String name = CURVE_OIDS.get(oid);
-		if (name == null)
-			return null;
-		return CURVES.get(name);
-	}
-
-	public static byte[] decodeSSHECDSASignature(byte[] sig) throws IOException {
-		byte[] rsArray = null;
-
-		TypesReader tr = new TypesReader(sig);
-
-		String sig_format = tr.readString();
-		if (sig_format.startsWith(ECDSA_SHA2_PREFIX) == false)
-			throw new IOException("Peer sent wrong signature format");
-
-		String curveName = sig_format.substring(ECDSA_SHA2_PREFIX.length());
-		if (CURVES.containsKey(curveName) == false) {
-			throw new IOException("Unsupported curve: " + curveName);
-		}
-
-		rsArray = tr.readByteString();
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in ECDSA signature!");
-
-		byte[] rArray;
-		byte[] sArray;
-		{
-			TypesReader rsReader = new TypesReader(rsArray);
-			rArray = rsReader.readMPINT().toByteArray();
-			sArray = rsReader.readMPINT().toByteArray();
-		}
-
-		int first = rArray.length;
-		int second = sArray.length;
-
-		/* We can't have the high bit set, so add an extra zero at the beginning if so. */
-		if ((rArray[0] & 0x80) != 0) {
-			first++;
-		}
-		if ((sArray[0] & 0x80) != 0) {
-			second++;
-		}
-
-		/* Calculate total output length */
-		ByteArrayOutputStream os = new ByteArrayOutputStream(6 + first + second);
-
-		/* ASN.1 SEQUENCE tag */
-		os.write(0x30);
-
-		/* Size of SEQUENCE */
-		writeLength(4 + first + second, os);
-
-		/* ASN.1 INTEGER tag */
-		os.write(0x02);
-
-		/* "r" INTEGER length */
-		writeLength(first, os);
-
-		/* Copy in the "r" INTEGER */
-		if (first != rArray.length) {
-			os.write(0x00);
-		}
-		os.write(rArray);
-
-		/* ASN.1 INTEGER tag */
-		os.write(0x02);
-
-		/* "s" INTEGER length */
-		writeLength(second, os);
-
-		/* Copy in the "s" INTEGER */
-		if (second != sArray.length) {
-			os.write(0x00);
-		}
-		os.write(sArray);
-
-		return os.toByteArray();
-	}
-
-	private static final void writeLength(int length, OutputStream os) throws IOException {
-		if (length <= 0x7F) {
-			os.write(length);
-			return;
-		}
-
-		int numOctets = 0;
-		int lenCopy = length;
-		while (lenCopy != 0) {
-			lenCopy >>>= 8;
-			numOctets++;
-		}
-
-		os.write(0x80 | numOctets);
-
-		for (int i = (numOctets - 1) * 8; i >= 0; i -= 8) {
-			os.write((byte) (length >> i));
-		}
-	}
-
-	public static byte[] encodeSSHECDSASignature(byte[] sig, ECParameterSpec params) throws IOException
-	{
-		TypesWriter tw = new TypesWriter();
-
-		String curveName = getCurveName(params);
-		tw.writeString(ECDSA_SHA2_PREFIX + curveName);
-
-		if ((sig[0] != 0x30) || (sig[1] != sig.length - 2) || (sig[2] != 0x02)) {
-			throw new IOException("Invalid signature format");
-		}
-
-		int rLength = sig[3];
-		if ((rLength + 6 > sig.length) || (sig[4 + rLength] != 0x02)) {
-			throw new IOException("Invalid signature format");
-		}
-
-		int sLength = sig[5 + rLength];
-		if (6 + rLength + sLength > sig.length) {
-			throw new IOException("Invalid signature format");
-		}
-
-		byte[] rArray = new byte[rLength];
-		byte[] sArray = new byte[sLength];
-
-		System.arraycopy(sig, 4, rArray, 0, rLength);
-		System.arraycopy(sig, 6 + rLength, sArray, 0, sLength);
-
-		BigInteger r = new BigInteger(1, rArray);
-		BigInteger s = new BigInteger(1, sArray);
-
-		// Write the <r,s> to its own types writer.
-		TypesWriter rsWriter = new TypesWriter();
-		rsWriter.writeMPInt(r);
-		rsWriter.writeMPInt(s);
-		byte[] encoded = rsWriter.getBytes();
-		tw.writeString(encoded, 0, encoded.length);
-
-		return tw.getBytes();
-	}
-
-	public static byte[] generateSignature(byte[] message, ECPrivateKey pk) throws IOException
-	{
-		final String algo = getSignatureAlgorithmForParams(pk.getParams());
-
-		try {
-			Signature s = Signature.getInstance(algo);
-			s.initSign(pk);
-			s.update(message);
-			return s.sign();
-		} catch (NoSuchAlgorithmException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		} catch (InvalidKeyException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		} catch (SignatureException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		}
-	}
-
-	public static boolean verifySignature(byte[] message, byte[] ds, ECPublicKey dpk) throws IOException
-	{
-		final String algo = getSignatureAlgorithmForParams(dpk.getParams());
-
-		try {
-			Signature s = Signature.getInstance(algo);
-			s.initVerify(dpk);
-			s.update(message);
-			return s.verify(ds);
-		} catch (NoSuchAlgorithmException e) {
-			IOException ex = new IOException("No such algorithm");
-			ex.initCause(e);
-			throw ex;
-		} catch (InvalidKeyException e) {
-			IOException ex = new IOException("No such algorithm");
-			ex.initCause(e);
-			throw ex;
-		} catch (SignatureException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		}
-	}
-
-	private static String getSignatureAlgorithmForParams(ECParameterSpec params) {
-		int size = getCurveSize(params);
-		if (size <= 256) {
-			return "SHA256withECDSA";
-		} else if (size <= 384) {
-			return "SHA384withECDSA";
-		} else {
-			return "SHA512withECDSA";
-		}
-	}
-
-	public static String getDigestAlgorithmForParams(ECParameterSpec params) {
-		int size = getCurveSize(params);
-		if (size <= 256) {
-			return "SHA-256";
-		} else if (size <= 384) {
-			return "SHA-384";
-		} else {
-			return "SHA-512";
-		}
-	}
-
-	/**
-	 * Decode an OctetString to EllipticCurvePoint according to SECG 2.3.4
-	 */
-	public static ECPoint decodeECPoint(byte[] M, EllipticCurve curve) {
-		if (M.length == 0) {
-			return null;
-		}
-
-		// M has len 2 ceil(log_2(q)/8) + 1 ?
-		int elementSize = (curve.getField().getFieldSize() + 7) / 8;
-		if (M.length != 2 * elementSize + 1) {
-			return null;
-		}
-
-		// step 3.2
-		if (M[0] != 0x04) {
-			return null;
-		}
-
-		// Step 3.3
-		byte[] xp = new byte[elementSize];
-		System.arraycopy(M, 1, xp, 0, elementSize);
-
-		// Step 3.4
-		byte[] yp = new byte[elementSize];
-		System.arraycopy(M, 1 + elementSize, yp, 0, elementSize);
-
-		ECPoint P = new ECPoint(new BigInteger(1, xp), new BigInteger(1, yp));
-
-		// TODO check point 3.5
-
-		// Step 3.6
-		return P;
-	}
-
-	/**
-	 * Encode EllipticCurvePoint to an OctetString
-	 */
-	public static byte[] encodeECPoint(ECPoint group, EllipticCurve curve)
-	{
-		// M has len 2 ceil(log_2(q)/8) + 1 ?
-		int elementSize = (curve.getField().getFieldSize() + 7) / 8;
-		byte[] M = new byte[2 * elementSize + 1];
-
-		// Uncompressed format
-		M[0] = 0x04;
-
-		{
-			byte[] affineX = removeLeadingZeroes(group.getAffineX().toByteArray());
-			System.arraycopy(affineX, 0, M, 1 + elementSize - affineX.length, affineX.length);
-		}
-
-		{
-			byte[] affineY = removeLeadingZeroes(group.getAffineY().toByteArray());
-			System.arraycopy(affineY, 0, M, 1 + elementSize + elementSize - affineY.length,
-							 affineY.length);
-		}
-
-		return M;
-	}
-
-	private static byte[] removeLeadingZeroes(byte[] input) {
-		if (input[0] != 0x00) {
-			return input;
-		}
-
-		int pos = 1;
-		while (pos < input.length - 1 && input[pos] == 0x00) {
-			pos++;
-		}
-
-		byte[] output = new byte[input.length - pos];
-		System.arraycopy(input, pos, output, 0, output.length);
-		return output;
-	}
-
-	public static class EllipticCurves {
-		public static ECParameterSpec nistp256 = new ECParameterSpec(
-				new EllipticCurve(
-						new ECFieldFp(new BigInteger("FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF", 16)),
-						new BigInteger("FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC", 16),
-						new BigInteger("5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b", 16)),
-				new ECPoint(new BigInteger("6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296", 16),
-							new BigInteger("4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5", 16)),
-				new BigInteger("FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551", 16),
-				1);
-
-		public static ECParameterSpec nistp384 = new ECParameterSpec(
-				new EllipticCurve(
-						new ECFieldFp(new BigInteger("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF", 16)),
-						new BigInteger("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFC", 16),
-						new BigInteger("B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF", 16)),
-				new ECPoint(new BigInteger("AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB7", 16),
-							new BigInteger("3617DE4A96262C6F5D9E98BF9292DC29F8F41DBD289A147CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F", 16)),
-				new BigInteger("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973", 16),
-				1);
-
-		public static ECParameterSpec nistp521 = new ECParameterSpec(
-				new EllipticCurve(
-						new ECFieldFp(new BigInteger("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 16)),
-						new BigInteger("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC", 16),
-						new BigInteger("0051953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B503F00", 16)),
-				new ECPoint(new BigInteger("00C6858E06B70404E9CD9E3ECB662395B4429C648139053FB521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5BD66", 16),
-							new BigInteger("011839296A789A3BC0045C8A5FB42C7D1BD998F54449579B446817AFBD17273E662C97EE72995EF42640C550B9013FAD0761353C7086A272C24088BE94769FD16650", 16)),
-				new BigInteger("01FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E91386409", 16),
-				1);
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java b/app/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java
deleted file mode 100644
index 3406312..0000000
--- a/app/src/main/java/com/trilead/ssh2/signature/RSASHA1Verify.java
+++ /dev/null
@@ -1,180 +0,0 @@
-
-package com.trilead.ssh2.signature;
-
-import java.io.IOException;
-import java.math.BigInteger;
-import java.security.InvalidKeyException;
-import java.security.KeyFactory;
-import java.security.NoSuchAlgorithmException;
-import java.security.Signature;
-import java.security.SignatureException;
-import java.security.interfaces.RSAPrivateKey;
-import java.security.interfaces.RSAPublicKey;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.KeySpec;
-import java.security.spec.RSAPublicKeySpec;
-
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.packets.TypesWriter;
-
-
-/**
- * RSASHA1Verify.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: RSASHA1Verify.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class RSASHA1Verify
-{
-	private static final Logger log = Logger.getLogger(RSASHA1Verify.class);
-
-	public static RSAPublicKey decodeSSHRSAPublicKey(byte[] key) throws IOException
-	{
-		TypesReader tr = new TypesReader(key);
-
-		String key_format = tr.readString();
-
-		if (key_format.equals("ssh-rsa") == false)
-			throw new IllegalArgumentException("This is not a ssh-rsa public key");
-
-		BigInteger e = tr.readMPINT();
-		BigInteger n = tr.readMPINT();
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in RSA public key!");
-
-		KeySpec keySpec = new RSAPublicKeySpec(n, e);
-
-		try {
-			KeyFactory kf = KeyFactory.getInstance("RSA");
-			return (RSAPublicKey) kf.generatePublic(keySpec);
-		} catch (NoSuchAlgorithmException nsae) {
-			IOException ioe = new IOException("No RSA KeyFactory available");
-			ioe.initCause(nsae);
-			throw ioe;
-		} catch (InvalidKeySpecException ikse) {
-			IOException ioe = new IOException("No RSA KeyFactory available");
-			ioe.initCause(ikse);
-			throw ioe;
-		}
-	}
-
-	public static byte[] encodeSSHRSAPublicKey(RSAPublicKey pk) throws IOException
-	{
-		TypesWriter tw = new TypesWriter();
-
-		tw.writeString("ssh-rsa");
-		tw.writeMPInt(pk.getPublicExponent());
-		tw.writeMPInt(pk.getModulus());
-
-		return tw.getBytes();
-	}
-
-	public static byte[] decodeSSHRSASignature(byte[] sig) throws IOException
-	{
-		TypesReader tr = new TypesReader(sig);
-
-		String sig_format = tr.readString();
-
-		if (sig_format.equals("ssh-rsa") == false)
-			throw new IOException("Peer sent wrong signature format");
-
-		/* S is NOT an MPINT. "The value for 'rsa_signature_blob' is encoded as a string
-		 * containing s (which is an integer, without lengths or padding, unsigned and in
-		 * network byte order)." See also below.
-		 */
-
-		byte[] s = tr.readByteString();
-
-		if (s.length == 0)
-			throw new IOException("Error in RSA signature, S is empty.");
-
-		if (log.isEnabled())
-		{
-			log.log(80, "Decoding ssh-rsa signature string (length: " + s.length + ")");
-		}
-
-		if (tr.remain() != 0)
-			throw new IOException("Padding in RSA signature!");
-
-		if (s[0] == 0 && s[1] == 0 && s[2] == 0) {
-			int i = 0;
-			int j = ((s[i++] << 24) & 0xff000000) | ((s[i++] << 16) & 0x00ff0000)
-					| ((s[i++] << 8) & 0x0000ff00) | ((s[i++]) & 0x000000ff);
-			i += j;
-			j = ((s[i++] << 24) & 0xff000000) | ((s[i++] << 16) & 0x00ff0000)
-					| ((s[i++] << 8) & 0x0000ff00) | ((s[i++]) & 0x000000ff);
-			byte[] tmp = new byte[j];
-			System.arraycopy(s, i, tmp, 0, j);
-			sig = tmp;
-		}
-
-		return s;
-	}
-
-	public static byte[] encodeSSHRSASignature(byte[] s) throws IOException
-	{
-		TypesWriter tw = new TypesWriter();
-
-		tw.writeString("ssh-rsa");
-
-		/* S is NOT an MPINT. "The value for 'rsa_signature_blob' is encoded as a string
-		 * containing s (which is an integer, without lengths or padding, unsigned and in
-		 * network byte order)."
-		 */
-
-		/* Remove first zero sign byte, if present */
-
-		if ((s.length > 1) && (s[0] == 0x00))
-			tw.writeString(s, 1, s.length - 1);
-		else
-			tw.writeString(s, 0, s.length);
-
-		return tw.getBytes();
-	}
-
-	public static byte[] generateSignature(byte[] message, RSAPrivateKey pk) throws IOException
-	{
-		try {
-			Signature s = Signature.getInstance("SHA1withRSA");
-			s.initSign(pk);
-			s.update(message);
-			return s.sign();
-		} catch (NoSuchAlgorithmException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		} catch (InvalidKeyException e) {
-			IOException ex =  new IOException();
-			ex.initCause(e);
-			throw ex;
-		} catch (SignatureException e) {
-			IOException ex =  new IOException();
-			ex.initCause(e);
-			throw ex;
-		}
-	}
-
-	public static boolean verifySignature(byte[] message, byte[] ds, RSAPublicKey dpk) throws IOException
-	{
-		try {
-			Signature s = Signature.getInstance("SHA1withRSA");
-			s.initVerify(dpk);
-			s.update(message);
-			return s.verify(ds);
-		} catch (NoSuchAlgorithmException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		} catch (InvalidKeyException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		} catch (SignatureException e) {
-			IOException ex = new IOException();
-			ex.initCause(e);
-			throw ex;
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java b/app/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java
deleted file mode 100644
index d7a5ee5..0000000
--- a/app/src/main/java/com/trilead/ssh2/transport/ClientServerHello.java
+++ /dev/null
@@ -1,125 +0,0 @@
-
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.UnsupportedEncodingException;
-
-import com.trilead.ssh2.Connection;
-
-/**
- * ClientServerHello.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: ClientServerHello.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class ClientServerHello
-{
-	String server_line;
-	String client_line;
-
-	String server_versioncomment;
-
-	public final static int readLineRN(InputStream is, byte[] buffer) throws IOException
-	{
-		int pos = 0;
-		boolean need10 = false;
-		int len = 0;
-		while (true)
-		{
-			int c = is.read();
-			if (c == -1)
-				throw new IOException("Premature connection close");
-
-			buffer[pos++] = (byte) c;
-
-			if (c == 13)
-			{
-				need10 = true;
-				continue;
-			}
-
-			if (c == 10)
-				break;
-
-			if (need10 == true)
-				throw new IOException("Malformed line sent by the server, the line does not end correctly.");
-
-			len++;
-			if (pos >= buffer.length)
-				throw new IOException("The server sent a too long line.");
-		}
-
-		return len;
-	}
-
-	public ClientServerHello(InputStream bi, OutputStream bo) throws IOException
-	{
-		client_line = "SSH-2.0-" + Connection.identification;
-
-		bo.write((client_line + "\r\n").getBytes("ISO-8859-1"));
-		bo.flush();
-
-		byte[] serverVersion = new byte[512];
-
-		for (int i = 0; i < 50; i++)
-		{
-			int len = readLineRN(bi, serverVersion);
-
-			server_line = new String(serverVersion, 0, len, "ISO-8859-1");
-
-			if (server_line.startsWith("SSH-"))
-				break;
-		}
-
-		if (server_line.startsWith("SSH-") == false)
-			throw new IOException(
-					"Malformed server identification string. There was no line starting with 'SSH-' amongst the first 50 lines.");
-
-		if (server_line.startsWith("SSH-1.99-"))
-			server_versioncomment = server_line.substring(9);
-		else if (server_line.startsWith("SSH-2.0-"))
-			server_versioncomment = server_line.substring(8);
-		else
-			throw new IOException("Server uses incompatible protocol, it is not SSH-2 compatible.");
-	}
-
-	/**
-	 * @return Returns the client_versioncomment.
-	 */
-	public byte[] getClientString()
-	{
-		byte[] result;
-
-		try
-		{
-			result = client_line.getBytes("ISO-8859-1");
-		}
-		catch (UnsupportedEncodingException ign)
-		{
-			result = client_line.getBytes();
-		}
-
-		return result;
-	}
-
-	/**
-	 * @return Returns the server_versioncomment.
-	 */
-	public byte[] getServerString()
-	{
-		byte[] result;
-
-		try
-		{
-			result = server_line.getBytes("ISO-8859-1");
-		}
-		catch (UnsupportedEncodingException ign)
-		{
-			result = server_line.getBytes();
-		}
-
-		return result;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/transport/KexManager.java b/app/src/main/java/com/trilead/ssh2/transport/KexManager.java
deleted file mode 100644
index ee0784a..0000000
--- a/app/src/main/java/com/trilead/ssh2/transport/KexManager.java
+++ /dev/null
@@ -1,690 +0,0 @@
-
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-import java.security.KeyFactory;
-import java.security.NoSuchAlgorithmException;
-import java.security.SecureRandom;
-import java.security.interfaces.DSAPublicKey;
-import java.security.interfaces.ECPublicKey;
-import java.security.interfaces.RSAPublicKey;
-import java.util.LinkedHashSet;
-import java.util.Set;
-import java.util.TreeSet;
-
-import com.trilead.ssh2.ConnectionInfo;
-import com.trilead.ssh2.DHGexParameters;
-import com.trilead.ssh2.ServerHostKeyVerifier;
-import com.trilead.ssh2.compression.CompressionFactory;
-import com.trilead.ssh2.compression.ICompressor;
-import com.trilead.ssh2.crypto.CryptoWishList;
-import com.trilead.ssh2.crypto.KeyMaterial;
-import com.trilead.ssh2.crypto.cipher.BlockCipher;
-import com.trilead.ssh2.crypto.cipher.BlockCipherFactory;
-import com.trilead.ssh2.crypto.dh.DhGroupExchange;
-import com.trilead.ssh2.crypto.dh.GenericDhExchange;
-import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.PacketKexDHInit;
-import com.trilead.ssh2.packets.PacketKexDHReply;
-import com.trilead.ssh2.packets.PacketKexDhGexGroup;
-import com.trilead.ssh2.packets.PacketKexDhGexInit;
-import com.trilead.ssh2.packets.PacketKexDhGexReply;
-import com.trilead.ssh2.packets.PacketKexDhGexRequest;
-import com.trilead.ssh2.packets.PacketKexDhGexRequestOld;
-import com.trilead.ssh2.packets.PacketKexInit;
-import com.trilead.ssh2.packets.PacketNewKeys;
-import com.trilead.ssh2.packets.Packets;
-import com.trilead.ssh2.signature.DSASHA1Verify;
-import com.trilead.ssh2.signature.ECDSASHA2Verify;
-import com.trilead.ssh2.signature.RSASHA1Verify;
-
-
-/**
- * KexManager.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KexManager.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class KexManager
-{
-	private static final Logger log = Logger.getLogger(KexManager.class);
-
-	private static final boolean supportsEc;
-	static {
-		KeyFactory keyFact;
-		try {
-			keyFact = KeyFactory.getInstance("EC");
-		} catch (NoSuchAlgorithmException ignored) {
-			keyFact = null;
-			log.log(10, "Disabling EC support due to lack of KeyFactory");
-		}
-		supportsEc = keyFact != null;
-	}
-
-	private static final Set<String> HOSTKEY_ALGS = new LinkedHashSet<String>();
-	static {
-		if (supportsEc) {
-			HOSTKEY_ALGS.add("ecdsa-sha2-nistp256");
-			HOSTKEY_ALGS.add("ecdsa-sha2-nistp384");
-			HOSTKEY_ALGS.add("ecdsa-sha2-nistp521");
-		}
-		HOSTKEY_ALGS.add("ssh-rsa");
-		HOSTKEY_ALGS.add("ssh-dss");
-	}
-
-	private static final Set<String> KEX_ALGS = new LinkedHashSet<String>();
-	static {
-		if (supportsEc) {
-			KEX_ALGS.add("ecdh-sha2-nistp256");
-			KEX_ALGS.add("ecdh-sha2-nistp384");
-			KEX_ALGS.add("ecdh-sha2-nistp521");
-		}
-		KEX_ALGS.add("diffie-hellman-group-exchange-sha256");
-		KEX_ALGS.add("diffie-hellman-group-exchange-sha1");
-		KEX_ALGS.add("diffie-hellman-group14-sha1");
-		KEX_ALGS.add("diffie-hellman-group1-sha1");
-	}
-
-	KexState kxs;
-	int kexCount = 0;
-	KeyMaterial km;
-	byte[] sessionId;
-	ClientServerHello csh;
-
-	final Object accessLock = new Object();
-	ConnectionInfo lastConnInfo = null;
-
-	boolean connectionClosed = false;
-
-	boolean ignore_next_kex_packet = false;
-
-	final TransportManager tm;
-
-	CryptoWishList nextKEXcryptoWishList;
-	DHGexParameters nextKEXdhgexParameters;
-
-	ServerHostKeyVerifier verifier;
-	final String hostname;
-	final int port;
-	final SecureRandom rnd;
-
-	public KexManager(TransportManager tm, ClientServerHello csh, CryptoWishList initialCwl, String hostname, int port,
-			ServerHostKeyVerifier keyVerifier, SecureRandom rnd)
-	{
-		this.tm = tm;
-		this.csh = csh;
-		this.nextKEXcryptoWishList = initialCwl;
-		this.nextKEXdhgexParameters = new DHGexParameters();
-		this.hostname = hostname;
-		this.port = port;
-		this.verifier = keyVerifier;
-		this.rnd = rnd;
-	}
-
-	public ConnectionInfo getOrWaitForConnectionInfo(int minKexCount) throws IOException
-	{
-		synchronized (accessLock)
-		{
-			while (true)
-			{
-				if ((lastConnInfo != null) && (lastConnInfo.keyExchangeCounter >= minKexCount))
-					return lastConnInfo;
-
-				if (connectionClosed)
-					throw (IOException) new IOException("Key exchange was not finished, connection is closed.")
-							.initCause(tm.getReasonClosedCause());
-
-				try
-				{
-					accessLock.wait();
-				}
-				catch (InterruptedException e)
-				{
-				}
-			}
-		}
-	}
-
-	private String getFirstMatch(String[] client, String[] server) throws NegotiateException
-	{
-		if (client == null || server == null)
-			throw new IllegalArgumentException();
-
-		if (client.length == 0)
-			return null;
-
-		for (int i = 0; i < client.length; i++)
-		{
-			for (int j = 0; j < server.length; j++)
-			{
-				if (client[i].equals(server[j]))
-					return client[i];
-			}
-		}
-		throw new NegotiateException();
-	}
-
-	private boolean compareFirstOfNameList(String[] a, String[] b)
-	{
-		if (a == null || b == null)
-			throw new IllegalArgumentException();
-
-		if ((a.length == 0) && (b.length == 0))
-			return true;
-
-		if ((a.length == 0) || (b.length == 0))
-			return false;
-
-		return (a[0].equals(b[0]));
-	}
-
-	private boolean isGuessOK(KexParameters cpar, KexParameters spar)
-	{
-		if (cpar == null || spar == null)
-			throw new IllegalArgumentException();
-
-		if (compareFirstOfNameList(cpar.kex_algorithms, spar.kex_algorithms) == false)
-		{
-			return false;
-		}
-
-		if (compareFirstOfNameList(cpar.server_host_key_algorithms, spar.server_host_key_algorithms) == false)
-		{
-			return false;
-		}
-
-		/*
-		 * We do NOT check here if the other algorithms can be agreed on, this
-		 * is just a check if kex_algorithms and server_host_key_algorithms were
-		 * guessed right!
-		 */
-
-		return true;
-	}
-
-	private NegotiatedParameters mergeKexParameters(KexParameters client, KexParameters server)
-	{
-		NegotiatedParameters np = new NegotiatedParameters();
-
-		try
-		{
-			np.kex_algo = getFirstMatch(client.kex_algorithms, server.kex_algorithms);
-
-			log.log(20, "kex_algo=" + np.kex_algo);
-
-			np.server_host_key_algo = getFirstMatch(client.server_host_key_algorithms,
-					server.server_host_key_algorithms);
-
-			log.log(20, "server_host_key_algo=" + np.server_host_key_algo);
-
-			np.enc_algo_client_to_server = getFirstMatch(client.encryption_algorithms_client_to_server,
-					server.encryption_algorithms_client_to_server);
-			np.enc_algo_server_to_client = getFirstMatch(client.encryption_algorithms_server_to_client,
-					server.encryption_algorithms_server_to_client);
-
-			log.log(20, "enc_algo_client_to_server=" + np.enc_algo_client_to_server);
-			log.log(20, "enc_algo_server_to_client=" + np.enc_algo_server_to_client);
-
-			np.mac_algo_client_to_server = getFirstMatch(client.mac_algorithms_client_to_server,
-					server.mac_algorithms_client_to_server);
-			np.mac_algo_server_to_client = getFirstMatch(client.mac_algorithms_server_to_client,
-					server.mac_algorithms_server_to_client);
-
-			log.log(20, "mac_algo_client_to_server=" + np.mac_algo_client_to_server);
-			log.log(20, "mac_algo_server_to_client=" + np.mac_algo_server_to_client);
-
-			np.comp_algo_client_to_server = getFirstMatch(client.compression_algorithms_client_to_server,
-					server.compression_algorithms_client_to_server);
-			np.comp_algo_server_to_client = getFirstMatch(client.compression_algorithms_server_to_client,
-					server.compression_algorithms_server_to_client);
-
-			log.log(20, "comp_algo_client_to_server=" + np.comp_algo_client_to_server);
-			log.log(20, "comp_algo_server_to_client=" + np.comp_algo_server_to_client);
-
-		}
-		catch (NegotiateException e)
-		{
-			return null;
-		}
-
-		try
-		{
-			np.lang_client_to_server = getFirstMatch(client.languages_client_to_server,
-					server.languages_client_to_server);
-		}
-		catch (NegotiateException e1)
-		{
-			np.lang_client_to_server = null;
-		}
-
-		try
-		{
-			np.lang_server_to_client = getFirstMatch(client.languages_server_to_client,
-					server.languages_server_to_client);
-		}
-		catch (NegotiateException e2)
-		{
-			np.lang_server_to_client = null;
-		}
-
-		if (isGuessOK(client, server))
-			np.guessOK = true;
-
-		return np;
-	}
-
-	public synchronized void initiateKEX(CryptoWishList cwl, DHGexParameters dhgex) throws IOException
-	{
-		nextKEXcryptoWishList = cwl;
-		nextKEXdhgexParameters = dhgex;
-
-		if (kxs == null)
-		{
-			kxs = new KexState();
-
-			kxs.dhgexParameters = nextKEXdhgexParameters;
-			PacketKexInit kp = new PacketKexInit(nextKEXcryptoWishList);
-			kxs.localKEX = kp;
-			tm.sendKexMessage(kp.getPayload());
-		}
-	}
-
-	private boolean establishKeyMaterial()
-	{
-		try
-		{
-			int mac_cs_key_len = MAC.getKeyLen(kxs.np.mac_algo_client_to_server);
-			int enc_cs_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_client_to_server);
-			int enc_cs_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_client_to_server);
-
-			int mac_sc_key_len = MAC.getKeyLen(kxs.np.mac_algo_server_to_client);
-			int enc_sc_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_server_to_client);
-			int enc_sc_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_server_to_client);
-
-			km = KeyMaterial.create(kxs.hashAlgo, kxs.H, kxs.K, sessionId, enc_cs_key_len, enc_cs_block_len, mac_cs_key_len,
-					enc_sc_key_len, enc_sc_block_len, mac_sc_key_len);
-		}
-		catch (IllegalArgumentException e)
-		{
-			return false;
-		}
-		return true;
-	}
-
-	private void finishKex() throws IOException
-	{
-		if (sessionId == null)
-			sessionId = kxs.H;
-
-		establishKeyMaterial();
-
-		/* Tell the other side that we start using the new material */
-
-		PacketNewKeys ign = new PacketNewKeys();
-		tm.sendKexMessage(ign.getPayload());
-
-		BlockCipher cbc;
-		MAC mac;
-		ICompressor comp;
-
-		try
-		{
-			cbc = BlockCipherFactory.createCipher(kxs.np.enc_algo_client_to_server, true, km.enc_key_client_to_server,
-					km.initial_iv_client_to_server);
-
-			mac = new MAC(kxs.np.mac_algo_client_to_server, km.integrity_key_client_to_server);
-			
-			comp = CompressionFactory.createCompressor(kxs.np.comp_algo_client_to_server);
-
-		}
-		catch (IllegalArgumentException e1)
-		{
-			throw new IOException("Fatal error during MAC startup!");
-		}
-
-		tm.changeSendCipher(cbc, mac);
-		tm.changeSendCompression(comp);
-		tm.kexFinished();
-	}
-
-	public static final String[] getDefaultServerHostkeyAlgorithmList()
-	{
-		return HOSTKEY_ALGS.toArray(new String[HOSTKEY_ALGS.size()]);
-	}
-
-	public static final void checkServerHostkeyAlgorithmsList(String[] algos)
-	{
-		for (int i = 0; i < algos.length; i++)
-		{
-			if (!HOSTKEY_ALGS.contains(algos[i]))
-				throw new IllegalArgumentException("Unknown server host key algorithm '" + algos[i] + "'");
-		}
-	}
-
-	public static final String[] getDefaultKexAlgorithmList()
-	{
-		return KEX_ALGS.toArray(new String[KEX_ALGS.size()]);
-	}
-
-	public static final void checkKexAlgorithmList(String[] algos)
-	{
-		for (int i = 0; i < algos.length; i++)
-		{
-			if (!KEX_ALGS.contains(algos[i]))
-				throw new IllegalArgumentException("Unknown kex algorithm '" + algos[i] + "'");
-		}
-	}
-
-	private boolean verifySignature(byte[] sig, byte[] hostkey) throws IOException
-	{
-		if (kxs.np.server_host_key_algo.startsWith("ecdsa-sha2-"))
-		{
-			byte[] rs = ECDSASHA2Verify.decodeSSHECDSASignature(sig);
-			ECPublicKey epk = ECDSASHA2Verify.decodeSSHECDSAPublicKey(hostkey);
-
-			log.log(50, "Verifying ecdsa signature");
-
-			return ECDSASHA2Verify.verifySignature(kxs.H, rs, epk);
-		}
-
-		if (kxs.np.server_host_key_algo.equals("ssh-rsa"))
-		{
-			byte[] rs = RSASHA1Verify.decodeSSHRSASignature(sig);
-			RSAPublicKey rpk = RSASHA1Verify.decodeSSHRSAPublicKey(hostkey);
-
-			log.log(50, "Verifying ssh-rsa signature");
-
-			return RSASHA1Verify.verifySignature(kxs.H, rs, rpk);
-		}
-
-		if (kxs.np.server_host_key_algo.equals("ssh-dss"))
-		{
-			byte[] ds = DSASHA1Verify.decodeSSHDSASignature(sig);
-			DSAPublicKey dpk = DSASHA1Verify.decodeSSHDSAPublicKey(hostkey);
-
-			log.log(50, "Verifying ssh-dss signature");
-
-			return DSASHA1Verify.verifySignature(kxs.H, ds, dpk);
-		}
-
-		throw new IOException("Unknown server host key algorithm '" + kxs.np.server_host_key_algo + "'");
-	}
-
-	public synchronized void handleMessage(byte[] msg, int msglen) throws IOException
-	{
-		PacketKexInit kip;
-
-		if (msg == null)
-		{
-			synchronized (accessLock)
-			{
-				connectionClosed = true;
-				accessLock.notifyAll();
-				return;
-			}
-		}
-
-		if ((kxs == null) && (msg[0] != Packets.SSH_MSG_KEXINIT))
-			throw new IOException("Unexpected KEX message (type " + msg[0] + ")");
-
-		if (ignore_next_kex_packet)
-		{
-			ignore_next_kex_packet = false;
-			return;
-		}
-
-		if (msg[0] == Packets.SSH_MSG_KEXINIT)
-		{
-			if ((kxs != null) && (kxs.state != 0))
-				throw new IOException("Unexpected SSH_MSG_KEXINIT message during on-going kex exchange!");
-
-			if (kxs == null)
-			{
-				/*
-				 * Ah, OK, peer wants to do KEX. Let's be nice and play
-				 * together.
-				 */
-				kxs = new KexState();
-				kxs.dhgexParameters = nextKEXdhgexParameters;
-				kip = new PacketKexInit(nextKEXcryptoWishList);
-				kxs.localKEX = kip;
-				tm.sendKexMessage(kip.getPayload());
-			}
-
-			kip = new PacketKexInit(msg, 0, msglen);
-			kxs.remoteKEX = kip;
-
-			kxs.np = mergeKexParameters(kxs.localKEX.getKexParameters(), kxs.remoteKEX.getKexParameters());
-
-			if (kxs.np == null)
-				throw new IOException("Cannot negotiate, proposals do not match.");
-
-			if (kxs.remoteKEX.isFirst_kex_packet_follows() && (kxs.np.guessOK == false))
-			{
-				/*
-				 * Guess was wrong, we need to ignore the next kex packet.
-				 */
-
-				ignore_next_kex_packet = true;
-			}
-
-			if (kxs.np.kex_algo.equals("diffie-hellman-group-exchange-sha1")
-					|| kxs.np.kex_algo.equals("diffie-hellman-group-exchange-sha256"))
-			{
-				if (kxs.dhgexParameters.getMin_group_len() == 0 || csh.server_versioncomment.matches("OpenSSH_2\\.([0-4]\\.|5\\.[0-2]).*"))
-				{
-					PacketKexDhGexRequestOld dhgexreq = new PacketKexDhGexRequestOld(kxs.dhgexParameters);
-					tm.sendKexMessage(dhgexreq.getPayload());
-				}
-				else
-				{
-					PacketKexDhGexRequest dhgexreq = new PacketKexDhGexRequest(kxs.dhgexParameters);
-					tm.sendKexMessage(dhgexreq.getPayload());
-				}
-				if (kxs.np.kex_algo.endsWith("sha1")) {
-					kxs.hashAlgo = "SHA1";
-				} else {
-					kxs.hashAlgo = "SHA-256";
-				}
-				kxs.state = 1;
-				return;
-			}
-
-			if (kxs.np.kex_algo.equals("diffie-hellman-group1-sha1")
-					|| kxs.np.kex_algo.equals("diffie-hellman-group14-sha1")
-					|| kxs.np.kex_algo.equals("ecdh-sha2-nistp256")
-					|| kxs.np.kex_algo.equals("ecdh-sha2-nistp384")
-					|| kxs.np.kex_algo.equals("ecdh-sha2-nistp521")) {
-				kxs.dhx = GenericDhExchange.getInstance(kxs.np.kex_algo);
-
-				kxs.dhx.init(kxs.np.kex_algo);
-				kxs.hashAlgo = kxs.dhx.getHashAlgo();
-
-				PacketKexDHInit kp = new PacketKexDHInit(kxs.dhx.getE());
-				tm.sendKexMessage(kp.getPayload());
-				kxs.state = 1;
-				return;
-			}
-
-			throw new IllegalStateException("Unknown KEX method!");
-		}
-
-		if (msg[0] == Packets.SSH_MSG_NEWKEYS)
-		{
-			if (km == null)
-				throw new IOException("Peer sent SSH_MSG_NEWKEYS, but I have no key material ready!");
-
-			BlockCipher cbc;
-			MAC mac;
-			ICompressor comp;
-
-			try
-			{
-				cbc = BlockCipherFactory.createCipher(kxs.np.enc_algo_server_to_client, false,
-						km.enc_key_server_to_client, km.initial_iv_server_to_client);
-
-				mac = new MAC(kxs.np.mac_algo_server_to_client, km.integrity_key_server_to_client);
-				
-				comp = CompressionFactory.createCompressor(kxs.np.comp_algo_server_to_client);
-			}
-			catch (IllegalArgumentException e1)
-			{
-				throw new IOException("Fatal error during MAC startup!");
-			}
-
-			tm.changeRecvCipher(cbc, mac);
-			tm.changeRecvCompression(comp);
-
-			ConnectionInfo sci = new ConnectionInfo();
-
-			kexCount++;
-
-			sci.keyExchangeAlgorithm = kxs.np.kex_algo;
-			sci.keyExchangeCounter = kexCount;
-			sci.clientToServerCryptoAlgorithm = kxs.np.enc_algo_client_to_server;
-			sci.serverToClientCryptoAlgorithm = kxs.np.enc_algo_server_to_client;
-			sci.clientToServerMACAlgorithm = kxs.np.mac_algo_client_to_server;
-			sci.serverToClientMACAlgorithm = kxs.np.mac_algo_server_to_client;
-			sci.serverHostKeyAlgorithm = kxs.np.server_host_key_algo;
-			sci.serverHostKey = kxs.hostkey;
-
-			synchronized (accessLock)
-			{
-				lastConnInfo = sci;
-				accessLock.notifyAll();
-			}
-
-			kxs = null;
-			return;
-		}
-
-		if ((kxs == null) || (kxs.state == 0))
-			throw new IOException("Unexpected Kex submessage!");
-
-		if (kxs.np.kex_algo.equals("diffie-hellman-group-exchange-sha1")
-				|| kxs.np.kex_algo.equals("diffie-hellman-group-exchange-sha256"))
-		{
-			if (kxs.state == 1)
-			{
-				PacketKexDhGexGroup dhgexgrp = new PacketKexDhGexGroup(msg, 0, msglen);
-				kxs.dhgx = new DhGroupExchange(dhgexgrp.getP(), dhgexgrp.getG());
-				kxs.dhgx.init(rnd);
-				PacketKexDhGexInit dhgexinit = new PacketKexDhGexInit(kxs.dhgx.getE());
-				tm.sendKexMessage(dhgexinit.getPayload());
-				kxs.state = 2;
-				return;
-			}
-
-			if (kxs.state == 2)
-			{
-				PacketKexDhGexReply dhgexrpl = new PacketKexDhGexReply(msg, 0, msglen);
-
-				kxs.hostkey = dhgexrpl.getHostKey();
-
-				if (verifier != null)
-				{
-					boolean vres = false;
-
-					try
-					{
-						vres = verifier.verifyServerHostKey(hostname, port, kxs.np.server_host_key_algo, kxs.hostkey);
-					}
-					catch (Exception e)
-					{
-						throw (IOException) new IOException(
-								"The server hostkey was not accepted by the verifier callback.").initCause(e);
-					}
-
-					if (vres == false)
-						throw new IOException("The server hostkey was not accepted by the verifier callback");
-				}
-
-				kxs.dhgx.setF(dhgexrpl.getF());
-
-				try
-				{
-					kxs.H = kxs.dhgx.calculateH(kxs.hashAlgo,
-							csh.getClientString(), csh.getServerString(),
-							kxs.localKEX.getPayload(), kxs.remoteKEX.getPayload(),
-							dhgexrpl.getHostKey(), kxs.dhgexParameters);
-				}
-				catch (IllegalArgumentException e)
-				{
-					throw (IOException) new IOException("KEX error.").initCause(e);
-				}
-
-				boolean res = verifySignature(dhgexrpl.getSignature(), kxs.hostkey);
-
-				if (res == false)
-					throw new IOException("Hostkey signature sent by remote is wrong!");
-
-				kxs.K = kxs.dhgx.getK();
-
-				finishKex();
-				kxs.state = -1;
-				return;
-			}
-
-			throw new IllegalStateException("Illegal State in KEX Exchange!");
-		}
-
-		if (kxs.np.kex_algo.equals("diffie-hellman-group1-sha1")
-				|| kxs.np.kex_algo.equals("diffie-hellman-group14-sha1")
-				|| kxs.np.kex_algo.equals("ecdh-sha2-nistp256")
-				|| kxs.np.kex_algo.equals("ecdh-sha2-nistp384")
-				|| kxs.np.kex_algo.equals("ecdh-sha2-nistp521"))
-		{
-			if (kxs.state == 1)
-			{
-
-				PacketKexDHReply dhr = new PacketKexDHReply(msg, 0, msglen);
-
-				kxs.hostkey = dhr.getHostKey();
-
-				if (verifier != null)
-				{
-					boolean vres = false;
-
-					try
-					{
-						vres = verifier.verifyServerHostKey(hostname, port, kxs.np.server_host_key_algo, kxs.hostkey);
-					}
-					catch (Exception e)
-					{
-						throw (IOException) new IOException(
-								"The server hostkey was not accepted by the verifier callback.").initCause(e);
-					}
-
-					if (vres == false)
-						throw new IOException("The server hostkey was not accepted by the verifier callback");
-				}
-
-				kxs.dhx.setF(dhr.getF());
-
-				try
-				{
-					kxs.H = kxs.dhx.calculateH(csh.getClientString(), csh.getServerString(), kxs.localKEX.getPayload(),
-							kxs.remoteKEX.getPayload(), dhr.getHostKey());
-				}
-				catch (IllegalArgumentException e)
-				{
-					throw (IOException) new IOException("KEX error.").initCause(e);
-				}
-
-				boolean res = verifySignature(dhr.getSignature(), kxs.hostkey);
-
-				if (res == false)
-					throw new IOException("Hostkey signature sent by remote is wrong!");
-
-				kxs.K = kxs.dhx.getK();
-
-				finishKex();
-				kxs.state = -1;
-				return;
-			}
-		}
-
-		throw new IllegalStateException("Unkown KEX method! (" + kxs.np.kex_algo + ")");
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/transport/KexParameters.java b/app/src/main/java/com/trilead/ssh2/transport/KexParameters.java
deleted file mode 100644
index 70bcf3e..0000000
--- a/app/src/main/java/com/trilead/ssh2/transport/KexParameters.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.trilead.ssh2.transport;
-
-/**
- * KexParameters.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KexParameters.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class KexParameters
-{
-	public byte[] cookie;
-	public String[] kex_algorithms;
-	public String[] server_host_key_algorithms;
-	public String[] encryption_algorithms_client_to_server;
-	public String[] encryption_algorithms_server_to_client;
-	public String[] mac_algorithms_client_to_server;
-	public String[] mac_algorithms_server_to_client;
-	public String[] compression_algorithms_client_to_server;
-	public String[] compression_algorithms_server_to_client;
-	public String[] languages_client_to_server;
-	public String[] languages_server_to_client;
-	public boolean first_kex_packet_follows;
-	public int reserved_field1;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/transport/KexState.java b/app/src/main/java/com/trilead/ssh2/transport/KexState.java
deleted file mode 100644
index 8611f3f..0000000
--- a/app/src/main/java/com/trilead/ssh2/transport/KexState.java
+++ /dev/null
@@ -1,33 +0,0 @@
-package com.trilead.ssh2.transport;
-
-
-import java.math.BigInteger;
-
-import com.trilead.ssh2.DHGexParameters;
-import com.trilead.ssh2.crypto.dh.DhGroupExchange;
-import com.trilead.ssh2.crypto.dh.GenericDhExchange;
-import com.trilead.ssh2.packets.PacketKexInit;
-
-/**
- * KexState.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: KexState.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class KexState
-{
-	public PacketKexInit localKEX;
-	public PacketKexInit remoteKEX;
-	public NegotiatedParameters np;
-	public int state = 0;
-
-	public BigInteger K;
-	public byte[] H;
-	
-	public byte[] hostkey;
-	
-	public String hashAlgo;
-	public GenericDhExchange dhx;
-	public DhGroupExchange dhgx;
-	public DHGexParameters dhgexParameters;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/transport/MessageHandler.java b/app/src/main/java/com/trilead/ssh2/transport/MessageHandler.java
deleted file mode 100644
index 039d473..0000000
--- a/app/src/main/java/com/trilead/ssh2/transport/MessageHandler.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-
-/**
- * MessageHandler.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: MessageHandler.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public interface MessageHandler
-{
-	public void handleMessage(byte[] msg, int msglen) throws IOException;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/transport/NegotiateException.java b/app/src/main/java/com/trilead/ssh2/transport/NegotiateException.java
deleted file mode 100644
index ff53097..0000000
--- a/app/src/main/java/com/trilead/ssh2/transport/NegotiateException.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.trilead.ssh2.transport;
-
-/**
- * NegotiateException.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: NegotiateException.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class NegotiateException extends Exception
-{
-	private static final long serialVersionUID = 3689910669428143157L;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/transport/NegotiatedParameters.java b/app/src/main/java/com/trilead/ssh2/transport/NegotiatedParameters.java
deleted file mode 100644
index e9f3a0a..0000000
--- a/app/src/main/java/com/trilead/ssh2/transport/NegotiatedParameters.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package com.trilead.ssh2.transport;
-
-/**
- * NegotiatedParameters.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: NegotiatedParameters.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class NegotiatedParameters
-{
-	public boolean guessOK;
-	public String kex_algo;
-	public String server_host_key_algo;
-	public String enc_algo_client_to_server;
-	public String enc_algo_server_to_client;
-	public String mac_algo_client_to_server;
-	public String mac_algo_server_to_client;
-	public String comp_algo_client_to_server;
-	public String comp_algo_server_to_client;
-	public String lang_client_to_server;
-	public String lang_server_to_client;
-}
diff --git a/app/src/main/java/com/trilead/ssh2/transport/TransportConnection.java b/app/src/main/java/com/trilead/ssh2/transport/TransportConnection.java
deleted file mode 100644
index 906c3c9..0000000
--- a/app/src/main/java/com/trilead/ssh2/transport/TransportConnection.java
+++ /dev/null
@@ -1,343 +0,0 @@
-
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.security.SecureRandom;
-
-import com.trilead.ssh2.compression.ICompressor;
-import com.trilead.ssh2.crypto.cipher.BlockCipher;
-import com.trilead.ssh2.crypto.cipher.CipherInputStream;
-import com.trilead.ssh2.crypto.cipher.CipherOutputStream;
-import com.trilead.ssh2.crypto.cipher.NullCipher;
-import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.Packets;
-
-
-/**
- * TransportConnection.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TransportConnection.java,v 1.1 2007/10/15 12:49:56 cplattne Exp $
- */
-public class TransportConnection
-{
-	private static final Logger log = Logger.getLogger(TransportConnection.class);
-
-	int send_seq_number = 0;
-
-	int recv_seq_number = 0;
-
-	CipherInputStream cis;
-
-	CipherOutputStream cos;
-
-	boolean useRandomPadding = false;
-
-	/* Depends on current MAC and CIPHER */
-
-	MAC send_mac;
-
-	byte[] send_mac_buffer;
-
-	int send_padd_blocksize = 8;
-
-	MAC recv_mac;
-
-	byte[] recv_mac_buffer;
-
-	byte[] recv_mac_buffer_cmp;
-
-	int recv_padd_blocksize = 8;
-	
-	ICompressor recv_comp = null;
-	
-	ICompressor send_comp = null;
-	
-	boolean can_recv_compress = false;
-
-	boolean can_send_compress = false;
-
-	byte[] recv_comp_buffer;
-	
-	byte[] send_comp_buffer;
-
-	/* won't change */
-
-	final byte[] send_padding_buffer = new byte[256];
-
-	final byte[] send_packet_header_buffer = new byte[5];
-
-	final byte[] recv_padding_buffer = new byte[256];
-
-	final byte[] recv_packet_header_buffer = new byte[5];
-
-	boolean recv_packet_header_present = false;
-
-	ClientServerHello csh;
-
-	final SecureRandom rnd;
-
-	public TransportConnection(InputStream is, OutputStream os, SecureRandom rnd)
-	{
-		this.cis = new CipherInputStream(new NullCipher(), is);
-		this.cos = new CipherOutputStream(new NullCipher(), os);
-		this.rnd = rnd;
-	}
-
-	public void changeRecvCipher(BlockCipher bc, MAC mac)
-	{
-		cis.changeCipher(bc);
-		recv_mac = mac;
-		recv_mac_buffer = (mac != null) ? new byte[mac.size()] : null;
-		recv_mac_buffer_cmp = (mac != null) ? new byte[mac.size()] : null;
-		recv_padd_blocksize = bc.getBlockSize();
-		if (recv_padd_blocksize < 8)
-			recv_padd_blocksize = 8;
-	}
-
-	public void changeSendCipher(BlockCipher bc, MAC mac)
-	{
-		if ((bc instanceof NullCipher) == false)
-		{
-			/* Only use zero byte padding for the first few packets */
-			useRandomPadding = true;
-			/* Once we start encrypting, there is no way back */
-		}
-
-		cos.changeCipher(bc);
-		send_mac = mac;
-		send_mac_buffer = (mac != null) ? new byte[mac.size()] : null;
-		send_padd_blocksize = bc.getBlockSize();
-		if (send_padd_blocksize < 8)
-			send_padd_blocksize = 8;
-	}
-	
-	public void changeRecvCompression(ICompressor comp)
-	{
-		recv_comp = comp;
-		
-		if (comp != null) {
-			recv_comp_buffer = new byte[comp.getBufferSize()];
-			can_recv_compress |= recv_comp.canCompressPreauth();
-		}
-	}
-
-	public void changeSendCompression(ICompressor comp)
-	{
-		send_comp = comp;
-		
-		if (comp != null) {
-			send_comp_buffer = new byte[comp.getBufferSize()];
-			can_send_compress |= send_comp.canCompressPreauth();
-		}
-	}
-	
-	public void sendMessage(byte[] message) throws IOException
-	{
-		sendMessage(message, 0, message.length, 0);
-	}
-
-	public void sendMessage(byte[] message, int off, int len) throws IOException
-	{
-		sendMessage(message, off, len, 0);
-	}
-
-	public int getPacketOverheadEstimate()
-	{
-		// return an estimate for the paket overhead (for send operations)
-		return 5 + 4 + (send_padd_blocksize - 1) + send_mac_buffer.length;
-	}
-
-	public void sendMessage(byte[] message, int off, int len, int padd) throws IOException
-	{
-		if (padd < 4)
-			padd = 4;
-		else if (padd > 64)
-			padd = 64;
-		
-		if (send_comp != null && can_send_compress) {
-			if (send_comp_buffer.length < message.length + 1024)
-				send_comp_buffer = new byte[message.length + 1024];
-			len = send_comp.compress(message, off, len, send_comp_buffer);
-			message = send_comp_buffer;
-		}
-
-		int packet_len = 5 + len + padd; /* Minimum allowed padding is 4 */
-
-		int slack = packet_len % send_padd_blocksize;
-
-		if (slack != 0)
-		{
-			packet_len += (send_padd_blocksize - slack);
-		}
-
-		if (packet_len < 16)
-			packet_len = 16;
-
-		int padd_len = packet_len - (5 + len);
-
-		if (useRandomPadding)
-		{
-			for (int i = 0; i < padd_len; i = i + 4)
-			{
-				/*
-				 * don't waste calls to rnd.nextInt() (by using only 8bit of the
-				 * output). just believe me: even though we may write here up to 3
-				 * bytes which won't be used, there is no "buffer overflow" (i.e.,
-				 * arrayindexoutofbounds). the padding buffer is big enough =) (256
-				 * bytes, and that is bigger than any current cipher block size + 64).
-				 */
-
-				int r = rnd.nextInt();
-				send_padding_buffer[i] = (byte) r;
-				send_padding_buffer[i + 1] = (byte) (r >> 8);
-				send_padding_buffer[i + 2] = (byte) (r >> 16);
-				send_padding_buffer[i + 3] = (byte) (r >> 24);
-			}
-		}
-		else
-		{
-			/* use zero padding for unencrypted traffic */
-			for (int i = 0; i < padd_len; i++)
-				send_padding_buffer[i] = 0;
-			/* Actually this code is paranoid: we never filled any
-			 * bytes into the padding buffer so far, therefore it should
-			 * consist of zeros only.
-			 */
-		}
-
-		send_packet_header_buffer[0] = (byte) ((packet_len - 4) >> 24);
-		send_packet_header_buffer[1] = (byte) ((packet_len - 4) >> 16);
-		send_packet_header_buffer[2] = (byte) ((packet_len - 4) >> 8);
-		send_packet_header_buffer[3] = (byte) ((packet_len - 4));
-		send_packet_header_buffer[4] = (byte) padd_len;
-
-		cos.write(send_packet_header_buffer, 0, 5);
-		cos.write(message, off, len);
-		cos.write(send_padding_buffer, 0, padd_len);
-
-		if (send_mac != null)
-		{
-			send_mac.initMac(send_seq_number);
-			send_mac.update(send_packet_header_buffer, 0, 5);
-			send_mac.update(message, off, len);
-			send_mac.update(send_padding_buffer, 0, padd_len);
-
-			send_mac.getMac(send_mac_buffer, 0);
-			cos.writePlain(send_mac_buffer, 0, send_mac_buffer.length);
-		}
-
-		cos.flush();
-
-		if (log.isEnabled())
-		{
-			log.log(90, "Sent " + Packets.getMessageName(message[off] & 0xff) + " " + len + " bytes payload");
-		}
-
-		send_seq_number++;
-	}
-
-	public int peekNextMessageLength() throws IOException
-	{
-		if (recv_packet_header_present == false)
-		{
-			cis.read(recv_packet_header_buffer, 0, 5);
-			recv_packet_header_present = true;
-		}
-
-		int packet_length = ((recv_packet_header_buffer[0] & 0xff) << 24)
-				| ((recv_packet_header_buffer[1] & 0xff) << 16) | ((recv_packet_header_buffer[2] & 0xff) << 8)
-				| ((recv_packet_header_buffer[3] & 0xff));
-
-		int padding_length = recv_packet_header_buffer[4] & 0xff;
-
-		if (packet_length > 35000 || packet_length < 12)
-			throw new IOException("Illegal packet size! (" + packet_length + ")");
-
-		int payload_length = packet_length - padding_length - 1;
-
-		if (payload_length < 0)
-			throw new IOException("Illegal padding_length in packet from remote (" + padding_length + ")");
-
-		return payload_length;
-	}
-
-	public int receiveMessage(byte buffer[], int off, int len) throws IOException
-	{
-		if (recv_packet_header_present == false)
-		{
-			cis.read(recv_packet_header_buffer, 0, 5);
-		}
-		else
-			recv_packet_header_present = false;
-
-		int packet_length = ((recv_packet_header_buffer[0] & 0xff) << 24)
-				| ((recv_packet_header_buffer[1] & 0xff) << 16) | ((recv_packet_header_buffer[2] & 0xff) << 8)
-				| ((recv_packet_header_buffer[3] & 0xff));
-
-		int padding_length = recv_packet_header_buffer[4] & 0xff;
-
-		if (packet_length > 35000 || packet_length < 12)
-			throw new IOException("Illegal packet size! (" + packet_length + ")");
-
-		int payload_length = packet_length - padding_length - 1;
-
-		if (payload_length < 0)
-			throw new IOException("Illegal padding_length in packet from remote (" + padding_length + ")");
-
-		if (payload_length >= len)
-			throw new IOException("Receive buffer too small (" + len + ", need " + payload_length + ")");
-
-		cis.read(buffer, off, payload_length);
-		cis.read(recv_padding_buffer, 0, padding_length);
-
-		if (recv_mac != null)
-		{
-			cis.readPlain(recv_mac_buffer, 0, recv_mac_buffer.length);
-
-			recv_mac.initMac(recv_seq_number);
-			recv_mac.update(recv_packet_header_buffer, 0, 5);
-			recv_mac.update(buffer, off, payload_length);
-			recv_mac.update(recv_padding_buffer, 0, padding_length);
-			recv_mac.getMac(recv_mac_buffer_cmp, 0);
-
-			for (int i = 0; i < recv_mac_buffer.length; i++)
-			{
-				if (recv_mac_buffer[i] != recv_mac_buffer_cmp[i])
-					throw new IOException("Remote sent corrupt MAC.");
-			}
-		}
-
-		recv_seq_number++;
-
-		if (log.isEnabled())
-		{
-			log.log(90, "Received " + Packets.getMessageName(buffer[off] & 0xff) + " " + payload_length
-					+ " bytes payload");
-		}
-
-		if (recv_comp != null && can_recv_compress) {
-			int[] uncomp_len = new int[] { payload_length };
-			buffer = recv_comp.uncompress(buffer, off, uncomp_len);
-			
-			if (buffer == null) {
-				throw new IOException("Error while inflating remote data");
-			} else {
-				return uncomp_len[0];
-			}
-		} else {
-			return payload_length;
-		}
-	}
-
-	/**
-	 * 
-	 */
-	public void startCompression() {
-		can_recv_compress = true;
-		can_send_compress = true;
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/transport/TransportManager.java b/app/src/main/java/com/trilead/ssh2/transport/TransportManager.java
deleted file mode 100644
index 8f3406e..0000000
--- a/app/src/main/java/com/trilead/ssh2/transport/TransportManager.java
+++ /dev/null
@@ -1,750 +0,0 @@
-
-package com.trilead.ssh2.transport;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.InetAddress;
-import java.net.InetSocketAddress;
-import java.net.Socket;
-import java.net.SocketTimeoutException;
-import java.net.UnknownHostException;
-import java.security.SecureRandom;
-import java.util.Vector;
-
-import com.trilead.ssh2.ConnectionInfo;
-import com.trilead.ssh2.ConnectionMonitor;
-import com.trilead.ssh2.DHGexParameters;
-import com.trilead.ssh2.HTTPProxyData;
-import com.trilead.ssh2.HTTPProxyException;
-import com.trilead.ssh2.ProxyData;
-import com.trilead.ssh2.ServerHostKeyVerifier;
-import com.trilead.ssh2.compression.ICompressor;
-import com.trilead.ssh2.crypto.Base64;
-import com.trilead.ssh2.crypto.CryptoWishList;
-import com.trilead.ssh2.crypto.cipher.BlockCipher;
-import com.trilead.ssh2.crypto.digest.MAC;
-import com.trilead.ssh2.log.Logger;
-import com.trilead.ssh2.packets.PacketDisconnect;
-import com.trilead.ssh2.packets.Packets;
-import com.trilead.ssh2.packets.TypesReader;
-import com.trilead.ssh2.util.Tokenizer;
-
-
-/*
- * Yes, the "standard" is a big mess. On one side, the say that arbitary channel
- * packets are allowed during kex exchange, on the other side we need to blindly
- * ignore the next _packet_ if the KEX guess was wrong. Where do we know from that
- * the next packet is not a channel data packet? Yes, we could check if it is in
- * the KEX range. But the standard says nothing about this. The OpenSSH guys
- * block local "normal" traffic during KEX. That's fine - however, they assume
- * that the other side is doing the same. During re-key, if they receive traffic
- * other than KEX, they become horribly irritated and kill the connection. Since
- * we are very likely going to communicate with OpenSSH servers, we have to play
- * the same game - even though we could do better.
- * 
- * btw: having stdout and stderr on the same channel, with a shared window, is
- * also a VERY good idea... =(
- */
-
-/**
- * TransportManager.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TransportManager.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $
- */
-public class TransportManager
-{
-	private static final Logger log = Logger.getLogger(TransportManager.class);
-
-	class HandlerEntry
-	{
-		MessageHandler mh;
-		int low;
-		int high;
-	}
-
-	private final Vector<byte[]> asynchronousQueue = new Vector<byte[]>();
-	private Thread asynchronousThread = null;
-
-	class AsynchronousWorker extends Thread
-	{
-		public void run()
-		{
-			while (true)
-			{
-				byte[] msg = null;
-
-				synchronized (asynchronousQueue)
-				{
-					if (asynchronousQueue.size() == 0)
-					{
-						/* After the queue is empty for about 2 seconds, stop this thread */
-
-						try
-						{
-							asynchronousQueue.wait(2000);
-						}
-						catch (InterruptedException e)
-						{
-							/* OKOK, if somebody interrupts us, then we may die earlier. */
-						}
-
-						if (asynchronousQueue.size() == 0)
-						{
-							asynchronousThread = null;
-							return;
-						}
-					}
-
-					msg = asynchronousQueue.remove(0);
-				}
-
-				/* The following invocation may throw an IOException.
-				 * There is no point in handling it - it simply means
-				 * that the connection has a problem and we should stop
-				 * sending asynchronously messages. We do not need to signal that
-				 * we have exited (asynchronousThread = null): further
-				 * messages in the queue cannot be sent by this or any
-				 * other thread.
-				 * Other threads will sooner or later (when receiving or
-				 * sending the next message) get the same IOException and
-				 * get to the same conclusion.
-				 */
-
-				try
-				{
-					sendMessage(msg);
-				}
-				catch (IOException e)
-				{
-					return;
-				}
-			}
-		}
-	}
-
-	String hostname;
-	int port;
-	final Socket sock = new Socket();
-
-	Object connectionSemaphore = new Object();
-
-	boolean flagKexOngoing = false;
-	boolean connectionClosed = false;
-
-	Throwable reasonClosedCause = null;
-
-	TransportConnection tc;
-	KexManager km;
-
-	Vector<HandlerEntry> messageHandlers = new Vector<HandlerEntry>();
-
-	Thread receiveThread;
-
-	Vector connectionMonitors = new Vector();
-	boolean monitorsWereInformed = false;
-
-	public TransportManager(String host, int port) throws IOException
-	{
-		this.hostname = host;
-		this.port = port;
-	}
-
-	public int getPacketOverheadEstimate()
-	{
-		return tc.getPacketOverheadEstimate();
-	}
-
-	public void setTcpNoDelay(boolean state) throws IOException
-	{
-		sock.setTcpNoDelay(state);
-	}
-
-	public void setSoTimeout(int timeout) throws IOException
-	{
-		sock.setSoTimeout(timeout);
-	}
-
-	public ConnectionInfo getConnectionInfo(int kexNumber) throws IOException
-	{
-		return km.getOrWaitForConnectionInfo(kexNumber);
-	}
-
-	public Throwable getReasonClosedCause()
-	{
-		synchronized (connectionSemaphore)
-		{
-			return reasonClosedCause;
-		}
-	}
-
-	public byte[] getSessionIdentifier()
-	{
-		return km.sessionId;
-	}
-
-	public void close(Throwable cause, boolean useDisconnectPacket)
-	{
-		if (useDisconnectPacket == false)
-		{
-			/* OK, hard shutdown - do not aquire the semaphore,
-			 * perhaps somebody is inside (and waits until the remote
-			 * side is ready to accept new data). */
-
-			try
-			{
-				sock.close();
-			}
-			catch (IOException ignore)
-			{
-			}
-
-			/* OK, whoever tried to send data, should now agree that
-			 * there is no point in further waiting =)
-			 * It is safe now to aquire the semaphore.
-			 */
-		}
-
-		synchronized (connectionSemaphore)
-		{
-			if (connectionClosed == false)
-			{
-				if (useDisconnectPacket == true)
-				{
-					try
-					{
-						byte[] msg = new PacketDisconnect(Packets.SSH_DISCONNECT_BY_APPLICATION, cause.getMessage(), "")
-								.getPayload();
-						if (tc != null)
-							tc.sendMessage(msg);
-					}
-					catch (IOException ignore)
-					{
-					}
-
-					try
-					{
-						sock.close();
-					}
-					catch (IOException ignore)
-					{
-					}
-				}
-
-				connectionClosed = true;
-				reasonClosedCause = cause; /* may be null */
-			}
-			connectionSemaphore.notifyAll();
-		}
-
-		/* No check if we need to inform the monitors */
-
-		Vector monitors = null;
-
-		synchronized (this)
-		{
-			/* Short term lock to protect "connectionMonitors"
-			 * and "monitorsWereInformed"
-			 * (they may be modified concurrently)
-			 */
-
-			if (monitorsWereInformed == false)
-			{
-				monitorsWereInformed = true;
-				monitors = (Vector) connectionMonitors.clone();
-			}
-		}
-
-		if (monitors != null)
-		{
-			for (int i = 0; i < monitors.size(); i++)
-			{
-				try
-				{
-					ConnectionMonitor cmon = (ConnectionMonitor) monitors.elementAt(i);
-					cmon.connectionLost(reasonClosedCause);
-				}
-				catch (Exception ignore)
-				{
-				}
-			}
-		}
-	}
-
-	private static void tryAllAddresses(Socket sock, String host, int port, int connectTimeout) throws IOException {
-		InetAddress[] addresses = InetAddress.getAllByName(host);
-		for (InetAddress addr : addresses) {
-			try {
-				sock.connect(new InetSocketAddress(addr, port), connectTimeout);
-				return;
-			} catch (SocketTimeoutException e) {
-			}
-		}
-		throw new SocketTimeoutException("Could not connect; socket timed out");
-	}
-
-	private void establishConnection(ProxyData proxyData, int connectTimeout) throws IOException
-	{
-		if (proxyData == null)
-		{
-			tryAllAddresses(sock, hostname, port, connectTimeout);
-			sock.setSoTimeout(0);
-			return;
-		}
-
-		if (proxyData instanceof HTTPProxyData)
-		{
-			HTTPProxyData pd = (HTTPProxyData) proxyData;
-
-			/* At the moment, we only support HTTP proxies */
-
-			tryAllAddresses(sock, pd.proxyHost, pd.proxyPort, connectTimeout);
-			sock.setSoTimeout(0);
-
-			/* OK, now tell the proxy where we actually want to connect to */
-
-			StringBuffer sb = new StringBuffer();
-
-			sb.append("CONNECT ");
-			sb.append(hostname);
-			sb.append(':');
-			sb.append(port);
-			sb.append(" HTTP/1.0\r\n");
-
-			if ((pd.proxyUser != null) && (pd.proxyPass != null))
-			{
-				String credentials = pd.proxyUser + ":" + pd.proxyPass;
-				char[] encoded = Base64.encode(credentials.getBytes("ISO-8859-1"));
-				sb.append("Proxy-Authorization: Basic ");
-				sb.append(encoded);
-				sb.append("\r\n");
-			}
-
-			if (pd.requestHeaderLines != null)
-			{
-				for (int i = 0; i < pd.requestHeaderLines.length; i++)
-				{
-					if (pd.requestHeaderLines[i] != null)
-					{
-						sb.append(pd.requestHeaderLines[i]);
-						sb.append("\r\n");
-					}
-				}
-			}
-
-			sb.append("\r\n");
-
-			OutputStream out = sock.getOutputStream();
-
-			out.write(sb.toString().getBytes("ISO-8859-1"));
-			out.flush();
-
-			/* Now parse the HTTP response */
-
-			byte[] buffer = new byte[1024];
-			InputStream in = sock.getInputStream();
-
-			int len = ClientServerHello.readLineRN(in, buffer);
-
-			String httpReponse = new String(buffer, 0, len, "ISO-8859-1");
-
-			if (httpReponse.startsWith("HTTP/") == false)
-				throw new IOException("The proxy did not send back a valid HTTP response.");
-
-			/* "HTTP/1.X XYZ X" => 14 characters minimum */
-
-			if ((httpReponse.length() < 14) || (httpReponse.charAt(8) != ' ') || (httpReponse.charAt(12) != ' '))
-				throw new IOException("The proxy did not send back a valid HTTP response.");
-
-			int errorCode = 0;
-
-			try
-			{
-				errorCode = Integer.parseInt(httpReponse.substring(9, 12));
-			}
-			catch (NumberFormatException ignore)
-			{
-				throw new IOException("The proxy did not send back a valid HTTP response.");
-			}
-
-			if ((errorCode < 0) || (errorCode > 999))
-				throw new IOException("The proxy did not send back a valid HTTP response.");
-
-			if (errorCode != 200)
-			{
-				throw new HTTPProxyException(httpReponse.substring(13), errorCode);
-			}
-
-			/* OK, read until empty line */
-
-			while (true)
-			{
-				len = ClientServerHello.readLineRN(in, buffer);
-				if (len == 0)
-					break;
-			}
-			return;
-		}
-
-		throw new IOException("Unsupported ProxyData");
-	}
-
-	public void initialize(CryptoWishList cwl, ServerHostKeyVerifier verifier, DHGexParameters dhgex,
-			int connectTimeout, SecureRandom rnd, ProxyData proxyData) throws IOException
-	{
-		/* First, establish the TCP connection to the SSH-2 server */
-
-		establishConnection(proxyData, connectTimeout);
-
-		/* Parse the server line and say hello - important: this information is later needed for the
-		 * key exchange (to stop man-in-the-middle attacks) - that is why we wrap it into an object
-		 * for later use.
-		 */
-
-		ClientServerHello csh = new ClientServerHello(sock.getInputStream(), sock.getOutputStream());
-
-		tc = new TransportConnection(sock.getInputStream(), sock.getOutputStream(), rnd);
-
-		km = new KexManager(this, csh, cwl, hostname, port, verifier, rnd);
-		km.initiateKEX(cwl, dhgex);
-
-		receiveThread = new Thread(new Runnable()
-		{
-			public void run()
-			{
-				try
-				{
-					receiveLoop();
-				}
-				catch (IOException e)
-				{
-					close(e, false);
-
-					if (log.isEnabled())
-						log.log(10, "Receive thread: error in receiveLoop: " + e.getMessage());
-				}
-
-				if (log.isEnabled())
-					log.log(50, "Receive thread: back from receiveLoop");
-
-				/* Tell all handlers that it is time to say goodbye */
-
-				if (km != null)
-				{
-					try
-					{
-						km.handleMessage(null, 0);
-					}
-					catch (IOException e)
-					{
-					}
-				}
-
-				for (int i = 0; i < messageHandlers.size(); i++)
-				{
-					HandlerEntry he = messageHandlers.elementAt(i);
-					try
-					{
-						he.mh.handleMessage(null, 0);
-					}
-					catch (Exception ignore)
-					{
-					}
-				}
-			}
-		});
-
-		receiveThread.setDaemon(true);
-		receiveThread.start();
-	}
-
-	public void registerMessageHandler(MessageHandler mh, int low, int high)
-	{
-		HandlerEntry he = new HandlerEntry();
-		he.mh = mh;
-		he.low = low;
-		he.high = high;
-
-		synchronized (messageHandlers)
-		{
-			messageHandlers.addElement(he);
-		}
-	}
-
-	public void removeMessageHandler(MessageHandler mh, int low, int high)
-	{
-		synchronized (messageHandlers)
-		{
-			for (int i = 0; i < messageHandlers.size(); i++)
-			{
-				HandlerEntry he = messageHandlers.elementAt(i);
-				if ((he.mh == mh) && (he.low == low) && (he.high == high))
-				{
-					messageHandlers.removeElementAt(i);
-					break;
-				}
-			}
-		}
-	}
-
-	public void sendKexMessage(byte[] msg) throws IOException
-	{
-		synchronized (connectionSemaphore)
-		{
-			if (connectionClosed)
-			{
-				throw (IOException) new IOException("Sorry, this connection is closed.").initCause(reasonClosedCause);
-			}
-
-			flagKexOngoing = true;
-
-			try
-			{
-				tc.sendMessage(msg);
-			}
-			catch (IOException e)
-			{
-				close(e, false);
-				throw e;
-			}
-		}
-	}
-
-	public void kexFinished() throws IOException
-	{
-		synchronized (connectionSemaphore)
-		{
-			flagKexOngoing = false;
-			connectionSemaphore.notifyAll();
-		}
-	}
-
-	public void forceKeyExchange(CryptoWishList cwl, DHGexParameters dhgex) throws IOException
-	{
-		km.initiateKEX(cwl, dhgex);
-	}
-
-	public void changeRecvCipher(BlockCipher bc, MAC mac)
-	{
-		tc.changeRecvCipher(bc, mac);
-	}
-
-	public void changeSendCipher(BlockCipher bc, MAC mac)
-	{
-		tc.changeSendCipher(bc, mac);
-	}
-
-	/**
-	 * @param comp
-	 */
-	public void changeRecvCompression(ICompressor comp) {
-		tc.changeRecvCompression(comp);
-	}
-
-	/**
-	 * @param comp
-	 */
-	public void changeSendCompression(ICompressor comp) {
-		tc.changeSendCompression(comp);
-	}
-
-	/**
-	 * 
-	 */
-	public void startCompression() {
-		tc.startCompression();
-	}
-
-	public void sendAsynchronousMessage(byte[] msg) throws IOException
-	{
-		synchronized (asynchronousQueue)
-		{
-			asynchronousQueue.addElement(msg);
-
-			/* This limit should be flexible enough. We need this, otherwise the peer
-			 * can flood us with global requests (and other stuff where we have to reply
-			 * with an asynchronous message) and (if the server just sends data and does not
-			 * read what we send) this will probably put us in a low memory situation
-			 * (our send queue would grow and grow and...) */
-
-			if (asynchronousQueue.size() > 100)
-				throw new IOException("Error: the peer is not consuming our asynchronous replies.");
-
-			/* Check if we have an asynchronous sending thread */
-
-			if (asynchronousThread == null)
-			{
-				asynchronousThread = new AsynchronousWorker();
-				asynchronousThread.setDaemon(true);
-				asynchronousThread.start();
-
-				/* The thread will stop after 2 seconds of inactivity (i.e., empty queue) */
-			}
-		}
-	}
-
-	public void setConnectionMonitors(Vector monitors)
-	{
-		synchronized (this)
-		{
-			connectionMonitors = (Vector) monitors.clone();
-		}
-	}
-
-	public void sendMessage(byte[] msg) throws IOException
-	{
-		if (Thread.currentThread() == receiveThread)
-			throw new IOException("Assertion error: sendMessage may never be invoked by the receiver thread!");
-
-		synchronized (connectionSemaphore)
-		{
-			while (true)
-			{
-				if (connectionClosed)
-				{
-					throw (IOException) new IOException("Sorry, this connection is closed.")
-							.initCause(reasonClosedCause);
-				}
-
-				if (flagKexOngoing == false)
-					break;
-
-				try
-				{
-					connectionSemaphore.wait();
-				}
-				catch (InterruptedException e)
-				{
-				}
-			}
-
-			try
-			{
-				tc.sendMessage(msg);
-			}
-			catch (IOException e)
-			{
-				close(e, false);
-				throw e;
-			}
-		}
-	}
-
-	public void receiveLoop() throws IOException
-	{
-		byte[] msg = new byte[35000];
-
-		while (true)
-		{
-			int msglen = tc.receiveMessage(msg, 0, msg.length);
-
-			int type = msg[0] & 0xff;
-
-			if (type == Packets.SSH_MSG_IGNORE)
-				continue;
-
-			if (type == Packets.SSH_MSG_DEBUG)
-			{
-				if (log.isEnabled())
-				{
-					TypesReader tr = new TypesReader(msg, 0, msglen);
-					tr.readByte();
-					tr.readBoolean();
-					StringBuffer debugMessageBuffer = new StringBuffer();
-					debugMessageBuffer.append(tr.readString("UTF-8"));
-
-					for (int i = 0; i < debugMessageBuffer.length(); i++)
-					{
-						char c = debugMessageBuffer.charAt(i);
-
-						if ((c >= 32) && (c <= 126))
-							continue;
-						debugMessageBuffer.setCharAt(i, '\uFFFD');
-					}
-
-					log.log(50, "DEBUG Message from remote: '" + debugMessageBuffer.toString() + "'");
-				}
-				continue;
-			}
-
-			if (type == Packets.SSH_MSG_UNIMPLEMENTED)
-			{
-				throw new IOException("Peer sent UNIMPLEMENTED message, that should not happen.");
-			}
-
-			if (type == Packets.SSH_MSG_DISCONNECT)
-			{
-				TypesReader tr = new TypesReader(msg, 0, msglen);
-				tr.readByte();
-				int reason_code = tr.readUINT32();
-				StringBuffer reasonBuffer = new StringBuffer();
-				reasonBuffer.append(tr.readString("UTF-8"));
-
-				/*
-				 * Do not get fooled by servers that send abnormal long error
-				 * messages
-				 */
-
-				if (reasonBuffer.length() > 255)
-				{
-					reasonBuffer.setLength(255);
-					reasonBuffer.setCharAt(254, '.');
-					reasonBuffer.setCharAt(253, '.');
-					reasonBuffer.setCharAt(252, '.');
-				}
-
-				/*
-				 * Also, check that the server did not send charcaters that may
-				 * screw up the receiver -> restrict to reasonable US-ASCII
-				 * subset -> "printable characters" (ASCII 32 - 126). Replace
-				 * all others with 0xFFFD (UNICODE replacement character).
-				 */
-
-				for (int i = 0; i < reasonBuffer.length(); i++)
-				{
-					char c = reasonBuffer.charAt(i);
-
-					if ((c >= 32) && (c <= 126))
-						continue;
-					reasonBuffer.setCharAt(i, '\uFFFD');
-				}
-
-				throw new IOException("Peer sent DISCONNECT message (reason code " + reason_code + "): "
-						+ reasonBuffer.toString());
-			}
-
-			/*
-			 * Is it a KEX Packet?
-			 */
-
-			if ((type == Packets.SSH_MSG_KEXINIT) || (type == Packets.SSH_MSG_NEWKEYS)
-					|| ((type >= 30) && (type <= 49)))
-			{
-				km.handleMessage(msg, msglen);
-				continue;
-			}
-
-			if (type == Packets.SSH_MSG_USERAUTH_SUCCESS) {
-				tc.startCompression();
-			}
-			
-			MessageHandler mh = null;
-
-			for (int i = 0; i < messageHandlers.size(); i++)
-			{
-				HandlerEntry he = messageHandlers.elementAt(i);
-				if ((he.low <= type) && (type <= he.high))
-				{
-					mh = he.mh;
-					break;
-				}
-			}
-
-			if (mh == null)
-				throw new IOException("Unexpected SSH message (type " + type + ")");
-
-			mh.handleMessage(msg, msglen);
-		}
-	}
-}
diff --git a/app/src/main/java/com/trilead/ssh2/util/TimeoutService.java b/app/src/main/java/com/trilead/ssh2/util/TimeoutService.java
deleted file mode 100644
index 3d52161..0000000
--- a/app/src/main/java/com/trilead/ssh2/util/TimeoutService.java
+++ /dev/null
@@ -1,149 +0,0 @@
-
-package com.trilead.ssh2.util;
-
-import java.io.PrintWriter;
-import java.io.StringWriter;
-import java.util.Collections;
-import java.util.LinkedList;
-
-import com.trilead.ssh2.log.Logger;
-
-
-/**
- * TimeoutService (beta). Here you can register a timeout.
- * <p>
- * Implemented having large scale programs in mind: if you open many concurrent SSH connections
- * that rely on timeouts, then there will be only one timeout thread. Once all timeouts
- * have expired/are cancelled, the thread will (sooner or later) exit.
- * Only after new timeouts arrive a new thread (singleton) will be instantiated.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: TimeoutService.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class TimeoutService
-{
-	private static final Logger log = Logger.getLogger(TimeoutService.class);
-
-	public static class TimeoutToken implements Comparable
-	{
-		private long runTime;
-		private Runnable handler;
-
-		private TimeoutToken(long runTime, Runnable handler)
-		{
-			this.runTime = runTime;
-			this.handler = handler;
-		}
-
-		public int compareTo(Object o)
-		{
-			TimeoutToken t = (TimeoutToken) o;
-			if (runTime > t.runTime)
-				return 1;
-			if (runTime == t.runTime)
-				return 0;
-			return -1;
-		}
-	}
-
-	private static class TimeoutThread extends Thread
-	{
-		public void run()
-		{
-			synchronized (todolist)
-			{
-				while (true)
-				{
-					if (todolist.size() == 0)
-					{
-						timeoutThread = null;
-						return;
-					}
-
-					long now = System.currentTimeMillis();
-
-					TimeoutToken tt = (TimeoutToken) todolist.getFirst();
-
-					if (tt.runTime > now)
-					{
-						/* Not ready yet, sleep a little bit */
-
-						try
-						{
-							todolist.wait(tt.runTime - now);
-						}
-						catch (InterruptedException e)
-						{
-						}
-
-						/* We cannot simply go on, since it could be that the token
-						 * was removed (cancelled) or another one has been inserted in
-						 * the meantime.
-						 */
-
-						continue;
-					}
-
-					todolist.removeFirst();
-
-					try
-					{
-						tt.handler.run();
-					}
-					catch (Exception e)
-					{
-						StringWriter sw = new StringWriter();
-						e.printStackTrace(new PrintWriter(sw));
-						log.log(20, "Exeception in Timeout handler:" + e.getMessage() + "(" + sw.toString() + ")");
-					}
-				}
-			}
-		}
-	}
-
-	/* The list object is also used for locking purposes */
-	private static final LinkedList todolist = new LinkedList();
-
-	private static Thread timeoutThread = null;
-
-	/**
-	 * It is assumed that the passed handler will not execute for a long time.
-	 * 
-	 * @param runTime
-	 * @param handler
-	 * @return a TimeoutToken that can be used to cancel the timeout.
-	 */
-	public static final TimeoutToken addTimeoutHandler(long runTime, Runnable handler)
-	{
-		TimeoutToken token = new TimeoutToken(runTime, handler);
-
-		synchronized (todolist)
-		{
-			todolist.add(token);
-			Collections.sort(todolist);
-
-			if (timeoutThread != null)
-				timeoutThread.interrupt();
-			else
-			{
-				timeoutThread = new TimeoutThread();
-				timeoutThread.setDaemon(true);
-				timeoutThread.start();
-			}
-		}
-
-		return token;
-	}
-
-	public static final void cancelTimeoutHandler(TimeoutToken token)
-	{
-		synchronized (todolist)
-		{
-			todolist.remove(token);
-
-			if (timeoutThread != null)
-				timeoutThread.interrupt();
-		}
-	}
-
-}
diff --git a/app/src/main/java/com/trilead/ssh2/util/Tokenizer.java b/app/src/main/java/com/trilead/ssh2/util/Tokenizer.java
deleted file mode 100644
index dfd480b..0000000
--- a/app/src/main/java/com/trilead/ssh2/util/Tokenizer.java
+++ /dev/null
@@ -1,51 +0,0 @@
-
-package com.trilead.ssh2.util;
-
-/**
- * Tokenizer. Why? Because StringTokenizer is not available in J2ME.
- * 
- * @author Christian Plattner, plattner@trilead.com
- * @version $Id: Tokenizer.java,v 1.1 2007/10/15 12:49:57 cplattne Exp $
- */
-public class Tokenizer
-{
-	/**
-	 * Exists because StringTokenizer is not available in J2ME.
-	 * Returns an array with at least 1 entry.
-	 * 
-	 * @param source must be non-null
-	 * @param delimiter
-	 * @return an array of Strings
-	 */
-	public static String[] parseTokens(String source, char delimiter)
-	{
-		int numtoken = 1;
-
-		for (int i = 0; i < source.length(); i++)
-		{
-			if (source.charAt(i) == delimiter)
-				numtoken++;
-		}
-
-		String list[] = new String[numtoken];
-		int nextfield = 0;
-
-		for (int i = 0; i < numtoken; i++)
-		{
-			if (nextfield >= source.length())
-			{
-				list[i] = "";
-			}
-			else
-			{
-				int idx = source.indexOf(delimiter, nextfield);
-				if (idx == -1)
-					idx = source.length();
-				list[i] = source.substring(nextfield, idx);
-				nextfield = idx + 1;
-			}
-		}
-
-		return list;
-	}
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/Authentication.java b/app/src/main/java/net/sourceforge/jsocks/Authentication.java
deleted file mode 100644
index 18cc48b..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/Authentication.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package net.sourceforge.jsocks;
-
-/**
- The Authentication interface provides for performing method specific
- authentication for SOCKS5 connections.
-*/
-public interface Authentication{
-   /**
-     This method is called when SOCKS5 server have selected a particular
-     authentication method, for whch an implementaion have been registered.
-
-     <p>
-     This method should return an array {inputstream,outputstream 
-     [,UDPEncapsulation]}. The reason for that is that SOCKS5 protocol
-     allows to have method specific encapsulation of data on the socket for 
-     purposes of integrity or security. And this encapsulation should be 
-     performed by those streams returned from the method. It is also possible
-     to encapsulate datagrams. If authentication method supports such 
-     encapsulation an instance of the UDPEncapsulation interface should be
-     returned as third element of the array, otherwise either null should be
-     returned as third element, or array should contain only 2 elements.
-
-     @param methodId Authentication method selected by the server.
-     @param proxySocket Socket used to conect to the proxy.
-     @return Two or three element array containing 
-             Input/Output streams which should be used on this connection.
-             Third argument is optional and should contain an instance
-             of UDPEncapsulation. It should be provided if the authentication
-             method used requires any encapsulation to be done on the
-             datagrams.
-   */
-   Object[] doSocksAuthentication(int methodId,java.net.Socket proxySocket)
-           throws java.io.IOException;
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/AuthenticationNone.java b/app/src/main/java/net/sourceforge/jsocks/AuthenticationNone.java
deleted file mode 100644
index f28193a..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/AuthenticationNone.java
+++ /dev/null
@@ -1,17 +0,0 @@
-package net.sourceforge.jsocks;
-
-/**
-  SOCKS5 none authentication. Dummy class does almost nothing.
-*/
-public class AuthenticationNone implements Authentication{
-
-    public Object[] doSocksAuthentication(int methodId,
-                                          java.net.Socket proxySocket)
-           throws java.io.IOException{
-
-       if(methodId!=0) return null;
-
-       return new Object[] { proxySocket.getInputStream(),
-                             proxySocket.getOutputStream()};
-   }
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/Proxy.java b/app/src/main/java/net/sourceforge/jsocks/Proxy.java
deleted file mode 100644
index 381c0a0..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/Proxy.java
+++ /dev/null
@@ -1,404 +0,0 @@
-package net.sourceforge.jsocks;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InterruptedIOException;
-import java.io.OutputStream;
-import java.net.InetAddress;
-import java.net.Socket;
-import java.net.UnknownHostException;
-
-/**
-  Abstract class Proxy, base for classes Socks4Proxy and Socks5Proxy.
-  Defines methods for specifying default proxy, to be
-  used by all classes of this package.
-*/
-
-public abstract class Proxy{
-
-//Data members
-   //protected InetRange directHosts = new InetRange();
-
-   protected InetAddress proxyIP = null;
-   protected String proxyHost = null;
-   protected int proxyPort;
-   protected Socket proxySocket = null;
-
-   protected InputStream in;
-   protected OutputStream out;
-
-   protected int version;
-
-   protected Proxy chainProxy = null;
-
-
-//Protected static/class variables
-   protected static Proxy defaultProxy = null;
-
-//Constructors
-//====================
-	Proxy(String proxyHost, int proxyPort) throws UnknownHostException {
-		this.proxyHost = proxyHost;
-		this.proxyIP = InetAddress.getByName(proxyHost);
-		this.proxyPort = proxyPort;
-	}
-
-   Proxy(Proxy chainProxy,InetAddress proxyIP,int proxyPort){
-      this.chainProxy = chainProxy;
-      this.proxyIP = proxyIP;
-      this.proxyPort = proxyPort;
-   }
-
-   Proxy(InetAddress proxyIP,int proxyPort){
-      this.proxyIP = proxyIP;
-      this.proxyPort = proxyPort;
-   }
-
-   Proxy(Proxy p){
-      this.proxyIP = p.proxyIP;
-      this.proxyPort = p.proxyPort;
-      this.version = p.version;
-   }
-
-//Public instance methods
-//========================
-
-   /**
-      Get the port on which proxy server is running.
-    * @return Proxy port.
-    */
-   public int getPort(){
-     return proxyPort;
-   }
-   /**
-      Get the ip address of the proxy server host.
-    * @return Proxy InetAddress.
-    */
-   public InetAddress getInetAddress(){
-     return proxyIP;
-   }
-
-    /**
-       Get string representation of this proxy.
-     * @returns string in the form:proxyHost:proxyPort \t Version versionNumber
-     */
-    public String toString(){
-       return (""+proxyIP.getHostName()+":"+proxyPort+"\tVersion "+version);
-    }
-
-
-//Public Static(Class) Methods
-//==============================
-
-   /**
-    * Sets SOCKS4 proxy as default.
-      @param hostName Host name on which SOCKS4 server is running.
-      @param port Port on which SOCKS4 server is running.
-      @param user Username to use for communications with proxy.
-    */
-   public static void setDefaultProxy(String hostName,int port,String user)
-                             throws UnknownHostException{
-      defaultProxy = new Socks4Proxy(hostName,port,user);
-   }
-
-   /**
-    * Sets SOCKS4 proxy as default.
-      @param ipAddress Host address on which SOCKS4 server is running.
-      @param port Port on which SOCKS4 server is running.
-      @param user Username to use for communications with proxy.
-    */
-   public static void setDefaultProxy(InetAddress ipAddress,int port,
-                                      String user){
-      defaultProxy = new Socks4Proxy(ipAddress,port,user);
-   }
-   /**
-    * Sets SOCKS5 proxy as default.
-    * Default proxy only supports no-authentication.
-      @param hostName Host name on which SOCKS5 server is running.
-      @param port Port on which SOCKS5 server is running.
-    */
-   public static void setDefaultProxy(String hostName,int port)
-                             throws UnknownHostException{
-      defaultProxy = new Socks5Proxy(hostName,port);
-   }
-   /**
-    * Sets SOCKS5 proxy as default.
-    * Default proxy only supports no-authentication.
-      @param ipAddress Host address on which SOCKS5 server is running.
-      @param port Port on which SOCKS5 server is running.
-    */
-   public static void setDefaultProxy(InetAddress ipAddress,int port){
-      defaultProxy = new Socks5Proxy(ipAddress,port);
-   }
-   /**
-    * Sets default proxy.
-      @param p Proxy to use as default proxy.
-    */
-   public static void setDefaultProxy(Proxy p){
-     defaultProxy = p;
-   }
-
-   /**
-      Get current default proxy.
-    * @return Current default proxy, or null if none is set.
-    */
-   public static Proxy getDefaultProxy(){
-     return defaultProxy;
-   }
-
-   /**
-     Parses strings in the form: host[:port:user:password], and creates
-     proxy from information obtained from parsing.
-     <p>
-     Defaults: port = 1080.<br>
-     If user specified but not password, creates Socks4Proxy, if user
-     not specified creates Socks5Proxy, if both user and password are
-     speciefied creates Socks5Proxy with user/password authentication.
-     @param proxy_entry String in the form host[:port:user:password]
-     @return Proxy created from the string, null if entry was somehow
-             invalid(host unknown for example, or empty string)
-   */
-   public static Proxy parseProxy(String proxy_entry){
-
-      String proxy_host;
-      int proxy_port = 1080;
-      String proxy_user = null;
-      String proxy_password = null;
-      Proxy proxy;
-
-      java.util.StringTokenizer st = new java.util.StringTokenizer(
-                                         proxy_entry,":");
-      if(st.countTokens() < 1) return null;
-
-      proxy_host = st.nextToken();
-      if(st.hasMoreTokens())
-         try{
-           proxy_port = Integer.parseInt(st.nextToken().trim());
-         }catch(NumberFormatException nfe){}
-
-      if(st.hasMoreTokens())
-         proxy_user = st.nextToken();
-
-      if(st.hasMoreTokens())
-         proxy_password = st.nextToken();
-
-      try{
-         if(proxy_user == null)
-           proxy = new Socks5Proxy(proxy_host,proxy_port);
-         else if(proxy_password == null)
-           proxy = new Socks4Proxy(proxy_host,proxy_port,proxy_user);
-         else{
-           proxy = new Socks5Proxy(proxy_host,proxy_port);
-           /*
-           UserPasswordAuthentication upa = new UserPasswordAuthentication(
-                                            proxy_user, proxy_password);
-
-           ((Socks5Proxy)proxy).setAuthenticationMethod(upa.METHOD_ID,upa);
-           */
-         }
-      }catch(UnknownHostException uhe){
-         return null;
-      }
-
-      return proxy;
-   }
-
-
-//Protected Methods
-//=================
-
-   protected void startSession()throws SocksException{
-       try{
-         proxySocket = new Socket(proxyIP,proxyPort);
-         in = proxySocket.getInputStream();
-         out = proxySocket.getOutputStream();
-       }catch(SocksException se){
-         throw se;
-       }catch(IOException io_ex){
-         throw new SocksException(SOCKS_PROXY_IO_ERROR,""+io_ex);
-       }
-   }
-
-   protected abstract Proxy copy();
-   protected abstract ProxyMessage formMessage(int cmd,InetAddress ip,int port);
-   protected abstract ProxyMessage formMessage(int cmd,String host,int port)
-             throws UnknownHostException;
-   protected abstract ProxyMessage formMessage(InputStream in)
-             throws SocksException,
-                    IOException;
-   
-
-   protected ProxyMessage connect(InetAddress ip,int port)
-             throws SocksException{
-      try{
-         startSession();
-         ProxyMessage request  = formMessage(SOCKS_CMD_CONNECT,
-			                     ip,port);
-         return exchange(request);
-      }catch(SocksException se){
-         endSession();
-         throw se;
-      }
-   }
-   protected ProxyMessage connect(String host,int port)
-             throws UnknownHostException,SocksException{
-      try{
-         startSession();
-         ProxyMessage request  = formMessage(SOCKS_CMD_CONNECT,
-			                     host,port);
-         return exchange(request);
-      }catch(SocksException se){
-         endSession();
-         throw se;
-      }
-   }
-
-   protected ProxyMessage bind(InetAddress ip,int port)
-             throws SocksException{
-      try{
-         startSession();
-         ProxyMessage request  = formMessage(SOCKS_CMD_BIND,
-				             ip,port);
-         return exchange(request);
-      }catch(SocksException se){
-         endSession();
-         throw se;
-      }
-   }
-   protected ProxyMessage bind(String host,int port)
-             throws UnknownHostException,SocksException{
-      try{
-         startSession();
-         ProxyMessage request  = formMessage(SOCKS_CMD_BIND,
-				             host,port);
-         return exchange(request);
-      }catch(SocksException se){
-         endSession();
-         throw se;
-      }
-   }
-
-   protected ProxyMessage accept()
-             throws IOException,SocksException{
-      ProxyMessage msg;
-      try{
-         msg = formMessage(in);
-      }catch(InterruptedIOException iioe){
-         throw iioe;
-      }catch(IOException io_ex){
-         endSession();
-         throw new SocksException(SOCKS_PROXY_IO_ERROR,"While Trying accept:"
-         +io_ex);
-      }
-      return msg;
-   }
-
-   protected ProxyMessage udpAssociate(InetAddress ip,int port)
-             throws SocksException{
-      try{
-         startSession();
-         ProxyMessage request  = formMessage(SOCKS_CMD_UDP_ASSOCIATE,
-				             ip,port);
-         if(request != null)
-           return exchange(request);
-      }catch(SocksException se){
-         endSession();
-         throw se;
-      }
-      //Only get here if request was null
-      endSession();
-      throw new SocksException(SOCKS_METHOD_NOTSUPPORTED,
-      "This version of proxy does not support UDP associate, use version 5");
-   }
-   protected ProxyMessage udpAssociate(String host,int port)
-             throws UnknownHostException,SocksException{
-      try{
-         startSession();
-         ProxyMessage request  = formMessage(SOCKS_CMD_UDP_ASSOCIATE,
-				             host,port);
-         if(request != null) return exchange(request);
-      }catch(SocksException se){
-         endSession();
-         throw se;
-      }
-      //Only get here if request was null
-      endSession();
-      throw new SocksException(SOCKS_METHOD_NOTSUPPORTED,
-      "This version of proxy does not support UDP associate, use version 5");
-   }
-
-
-   protected void endSession(){
-      try{
-         if(proxySocket!=null) proxySocket.close();
-         proxySocket = null;
-      }catch(IOException io_ex){
-      }
-   }
-
-   /**
-    *Sends the request to SOCKS server
-    */
-   protected void sendMsg(ProxyMessage msg)throws SocksException,
-                                                  IOException{
-      msg.write(out);
-   }
-
-   /** 
-    * Reads the reply from the SOCKS server
-    */
-   protected ProxyMessage readMsg()throws SocksException,
-                                          IOException{
-      return formMessage(in);
-   }
-   /**
-    *Sends the request reads reply and returns it
-    *throws exception if something wrong with IO
-    *or the reply code is not zero
-    */
-   protected ProxyMessage exchange(ProxyMessage request)
-                           throws SocksException{
-      ProxyMessage reply;
-      try{
-         request.write(out);
-         reply = formMessage(in);
-      }catch(SocksException s_ex){
-         throw s_ex;
-      }catch(IOException ioe){
-         throw(new SocksException(SOCKS_PROXY_IO_ERROR,""+ioe));
-      }
-      return reply;
-   }
-
-
-//Private methods
-//===============
-
-
-//Constants
-
-   public static final int SOCKS_SUCCESS		=0;
-   public static final int SOCKS_FAILURE		=1;
-   public static final int SOCKS_BADCONNECT		=2;
-   public static final int SOCKS_BADNETWORK		=3;
-   public static final int SOCKS_HOST_UNREACHABLE	=4;
-   public static final int SOCKS_CONNECTION_REFUSED	=5;
-   public static final int SOCKS_TTL_EXPIRE		=6;
-   public static final int SOCKS_CMD_NOT_SUPPORTED	=7;
-   public static final int SOCKS_ADDR_NOT_SUPPORTED	=8;
-
-   public static final int SOCKS_NO_PROXY		=1<<16;
-   public static final int SOCKS_PROXY_NO_CONNECT	=2<<16;
-   public static final int SOCKS_PROXY_IO_ERROR		=3<<16;
-   public static final int SOCKS_AUTH_NOT_SUPPORTED	=4<<16;
-   public static final int SOCKS_AUTH_FAILURE		=5<<16;
-   public static final int SOCKS_JUST_ERROR		=6<<16;
-
-   public static final int SOCKS_DIRECT_FAILED		=7<<16;
-   public static final int SOCKS_METHOD_NOTSUPPORTED	=8<<16;
-
-
-   public static final int SOCKS_CMD_CONNECT 		=0x1;
-   static final int SOCKS_CMD_BIND		=0x2;
-   static final int SOCKS_CMD_UDP_ASSOCIATE	=0x3;
-
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/ProxyMessage.java b/app/src/main/java/net/sourceforge/jsocks/ProxyMessage.java
deleted file mode 100644
index 442c380..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/ProxyMessage.java
+++ /dev/null
@@ -1,109 +0,0 @@
-package net.sourceforge.jsocks;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-
-/**
- Abstract class which describes SOCKS4/5 response/request.
-*/
-public abstract class ProxyMessage{
-   /** Host as an IP address */
-   public InetAddress ip=null;
-   /** SOCKS version, or version of the response for SOCKS4*/
-   public int version;
-   /** Port field of the request/response*/
-   public int port;
-   /** Request/response code as an int*/
-   public int command;
-   /** Host as string.*/
-   public String host=null;
-   /** User field for SOCKS4 request messages*/
-   public String user=null;
-
-   ProxyMessage(int command,InetAddress ip,int port){
-      this.command = command;
-      this.ip      = ip;
-      this.port    = port;
-   }
-
-   ProxyMessage(){
-   }
-
-
-   /**
-     Initialises Message from the stream. Reads server response from
-     given stream.
-     @param in Input stream to read response from.
-     @throws SocksException If server response code is not SOCKS_SUCCESS(0), or
-     if any error with protocol occurs.
-     @throws IOException If any error happens with I/O.
-   */
-   public abstract void read(InputStream in)
-                                    throws SocksException,
-                                           IOException;
-
-
-   /**
-     Initialises Message from the stream. Reads server response or client 
-     request from given stream.
-     
-     @param in Input stream to read response from.
-     @param clinetMode If true read server response, else read client request.
-     @throws SocksException If server response code is not SOCKS_SUCCESS(0) and
-     reading in client mode, or if any error with protocol occurs.
-     @throws IOException If any error happens with I/O.
-   */
-   public abstract void read(InputStream in,boolean client_mode)
-                                    throws SocksException,
-                                           IOException;
-
-
-   /**
-    Writes the message to the stream.
-    @param out Output stream to which message should be written.
-   */
-   public abstract void write(OutputStream out)throws SocksException,
-                                             IOException;
-
-   /**
-    Get the Address field of this message as InetAddress object.
-    @return Host address or null, if one can't be determined.
-   */
-   public InetAddress getInetAddress() throws UnknownHostException{
-     return ip;
-   }
-
-
-   /**
-    Get string representaion of this message.
-    @return string representation of this message.
-   */
-   public String toString(){
-      return 
-      "Proxy Message:\n"+
-      "Version:"+ version+"\n"+
-      "Command:"+ command+"\n"+
-      "IP:     "+ ip+"\n"+
-      "Port:   "+ port+"\n"+
-      "User:   "+ user+"\n" ;
-   }
-
-//Package methods
-//////////////////
-
-   static final String bytes2IPV4(byte[] addr,int offset){
-      String hostName = ""+(addr[offset] & 0xFF);
-      for(int i = offset+1;i<offset+4;++i)
-        hostName+="."+(addr[i] & 0xFF);
-      return hostName;
-   }
-
-   static final String bytes2IPV6(byte[] addr,int offset){
-     //Have no idea how they look like!
-     return null;
-   }
-
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/ProxyServer.java b/app/src/main/java/net/sourceforge/jsocks/ProxyServer.java
deleted file mode 100644
index 225149d..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/ProxyServer.java
+++ /dev/null
@@ -1,591 +0,0 @@
-package net.sourceforge.jsocks;
-import java.io.EOFException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InterruptedIOException;
-import java.io.OutputStream;
-import java.io.PrintStream;
-import java.io.PushbackInputStream;
-import java.net.ConnectException;
-import java.net.InetAddress;
-import java.net.NoRouteToHostException;
-import java.net.ServerSocket;
-import java.net.Socket;
-
-import net.sourceforge.jsocks.server.ServerAuthenticator;
-
-/**
-    SOCKS4 and SOCKS5 proxy, handles both protocols simultaniously.
-    Implements all SOCKS commands, including UDP relaying.
-    <p>
-    In order to use it you will need to implement ServerAuthenticator
-    interface. There is an implementation of this interface which does
-    no authentication ServerAuthenticatorNone, but it is very dangerous
-    to use, as it will give access to your local network to anybody
-    in the world. One should never use this authentication scheme unless
-    one have pretty good reason to do so.
-    There is a couple of other authentication schemes in socks.server package.
-    @see socks.server.ServerAuthenticator
-*/
-public class ProxyServer implements Runnable{
-
-   ServerAuthenticator auth;
-   ProxyMessage msg = null;
-
-   Socket sock=null,remote_sock=null;
-   ServerSocket ss=null;
-   UDPRelayServer relayServer = null;
-   InputStream in,remote_in;
-   OutputStream out,remote_out;
-
-   int mode;
-   static final int START_MODE	= 0;
-   static final int ACCEPT_MODE	= 1;
-   static final int PIPE_MODE	= 2;
-   static final int ABORT_MODE	= 3;
-
-   static final int BUF_SIZE	= 8192;
-
-   Thread pipe_thread1,pipe_thread2;
-   long lastReadTime;
-
-   protected static int iddleTimeout	= 180000; //3 minutes
-   static int acceptTimeout	= 180000; //3 minutes
-
-   static PrintStream log = null;
-   static Proxy proxy;
-
-
-//Public Constructors
-/////////////////////
-
-
-   /**
-    Creates a proxy server with given Authentication scheme.
-    @param auth Authentication scheme to be used.
-    */
-   public ProxyServer(ServerAuthenticator auth){
-     this.auth = auth;
-   }
-
-//Other constructors
-////////////////////
-
-   protected ProxyServer(ServerAuthenticator auth,Socket s){
-      this.auth  = auth;
-      this.sock  = s;
-      mode = START_MODE;
-   }
-
-//Public methods
-/////////////////
-
-   /**
-     Set the logging stream. Specifying null disables logging.
-   */
-   public static void setLog(OutputStream out){
-      if(out == null){
-        log = null;
-      }else{
-        log = new PrintStream(out,true);
-      }
-
-      UDPRelayServer.log = log;
-   }
-   
-   /**
-    Set proxy.
-    <p>
-    Allows Proxy chaining so that one Proxy server is connected to another
-    and so on. If proxy supports SOCKSv4, then only some SOCKSv5 requests
-    can be handled, UDP would not work, however CONNECT and BIND will be
-    translated.
-
-    @param p Proxy which should be used to handle user requests.
-   */
-   public static void setProxy(Proxy p){
-      proxy =p;
-      UDPRelayServer.proxy = proxy;
-   }
-
-   /**
-    Get proxy.
-    @return Proxy wich is used to handle user requests.
-   */
-   public static Proxy getProxy(){
-      return proxy;
-   }
-
-   /**
-    Sets the timeout for connections, how long shoud server wait
-    for data to arrive before dropping the connection.<br>
-    Zero timeout implies infinity.<br>
-    Default timeout is 3 minutes.
-   */
-   public static void setIddleTimeout(int timeout){
-      iddleTimeout = timeout;
-   }
-   /**
-    Sets the timeout for BIND command, how long the server should
-    wait for the incoming connection.<br>
-    Zero timeout implies infinity.<br>
-    Default timeout is 3 minutes.
-   */
-   public static void setAcceptTimeout(int timeout){
-      acceptTimeout = timeout;
-   }
-
-   /**
-    Sets the timeout for UDPRelay server.<br>
-    Zero timeout implies infinity.<br>
-    Default timeout is 3 minutes.
-   */
-   public static void setUDPTimeout(int timeout){
-      UDPRelayServer.setTimeout(timeout);
-   }
-
-   /**
-     Sets the size of the datagrams used in the UDPRelayServer.<br>
-     Default size is 64K, a bit more than maximum possible size of the
-     datagram.
-    */
-   public static void setDatagramSize(int size){
-      UDPRelayServer.setDatagramSize(size);
-   }
-
-
-   /**
-     Start the Proxy server at given port.<br>
-     This methods blocks.
-    */
-   public void start(int port){
-      start(port,5,null);
-   }
-
-   /**
-     Create a server with the specified port, listen backlog, and local 
-     IP address to bind to. The localIP argument can be used on a multi-homed
-     host for a ServerSocket that will only accept connect requests to one of 
-     its addresses. If localIP is null, it will default accepting connections 
-     on any/all local addresses. The port must be between 0 and 65535, 
-     inclusive. <br>
-     This methods blocks. 
-    */
-   public void start(int port,int backlog,InetAddress localIP){
-      try{
-        ss = new ServerSocket(port,backlog,localIP);
-        log("Starting SOCKS Proxy on:"+ss.getInetAddress().getHostAddress()+":"
-                                      +ss.getLocalPort());
-        while(true){
-          Socket s = ss.accept();
-          log("Accepted from:"+s.getInetAddress().getHostName()+":"
-                              +s.getPort());
-          ProxyServer ps = new ProxyServer(auth,s);
-          (new Thread(ps)).start();
-        }
-      }catch(IOException ioe){
-        ioe.printStackTrace();
-      }finally{
-      }
-   }
-
-   /**
-     Stop server operation.It would be wise to interrupt thread running the
-     server afterwards.
-    */
-   public void stop(){
-     try{
-       if(ss != null) ss.close();
-     }catch(IOException ioe){
-     }
-   }
-
-//Runnable interface
-////////////////////
-   public void run(){
-      switch(mode){
-        case START_MODE:
-         try{
-           startSession();
-         }catch(IOException ioe){
-           handleException(ioe);
-           //ioe.printStackTrace();
-         }finally{
-           abort();
-           if(auth!=null) auth.endSession();
-           log("Main thread(client->remote)stopped.");
-         }
-        break;
-        case ACCEPT_MODE:
-          try{
-            doAccept();
-            mode = PIPE_MODE;
-            pipe_thread1.interrupt(); //Tell other thread that connection have
-                                      //been accepted.
-            pipe(remote_in,out);
-          }catch(IOException ioe){
-            //log("Accept exception:"+ioe);
-            handleException(ioe);
-          }finally{
-            abort();
-            log("Accept thread(remote->client) stopped");
-          }
-        break;
-        case PIPE_MODE:
-         try{
-            pipe(remote_in,out);
-         }catch(IOException ioe){
-         }finally{
-            abort();
-            log("Support thread(remote->client) stopped");
-         }
-        break;
-        case ABORT_MODE:
-        break;
-        default:
-         log("Unexpected MODE "+mode);
-      }
-   }
-
-//Private methods
-/////////////////
-   private void startSession() throws IOException{
-     sock.setSoTimeout(iddleTimeout);
-
-     try{
-        auth = auth.startSession(sock);
-     }catch(IOException ioe){
-       log("Auth throwed exception:"+ioe);
-       auth = null;
-       return;
-     }
-
-     if(auth == null){ //Authentication failed
-        log("Authentication failed");
-        return;
-     }
-
-     in = auth.getInputStream();
-     out = auth.getOutputStream();
-
-     msg = readMsg(in);
-     handleRequest(msg);
-   }
-   
-   protected void handleRequest(ProxyMessage msg)
-                throws IOException{
-      if(!auth.checkRequest(msg)) throw new 
-                                  SocksException(Proxy.SOCKS_FAILURE);
-
-      if(msg.ip == null){
-        if(msg instanceof Socks5Message){
-          msg.ip = InetAddress.getByName(msg.host);
-        }else
-          throw new SocksException(Proxy.SOCKS_FAILURE);
-      }
-      log(msg);
-
-      switch(msg.command){
-        case Proxy.SOCKS_CMD_CONNECT:
-          onConnect(msg);
-        break;
-        case Proxy.SOCKS_CMD_BIND:
-          onBind(msg);
-        break;
-        case Proxy.SOCKS_CMD_UDP_ASSOCIATE:
-          onUDP(msg);
-        break;
-        default:
-          throw new SocksException(Proxy.SOCKS_CMD_NOT_SUPPORTED);
-      }
-   }
-
-   private void handleException(IOException ioe){
-      //If we couldn't read the request, return;
-      if(msg == null) return;
-      //If have been aborted by other thread
-      if(mode == ABORT_MODE) return;
-      //If the request was successfully completed, but exception happened later
-      if(mode == PIPE_MODE) return;
-
-      int error_code = Proxy.SOCKS_FAILURE;
-
-      if(ioe instanceof SocksException)
-          error_code = ((SocksException)ioe).errCode;
-      else if(ioe instanceof NoRouteToHostException)
-          error_code = Proxy.SOCKS_HOST_UNREACHABLE;
-      else if(ioe instanceof ConnectException)
-          error_code = Proxy.SOCKS_CONNECTION_REFUSED;
-      else if(ioe instanceof InterruptedIOException)
-          error_code = Proxy.SOCKS_TTL_EXPIRE;
-
-      if(error_code > Proxy.SOCKS_ADDR_NOT_SUPPORTED || error_code < 0){
-          error_code = Proxy.SOCKS_FAILURE; 
-      }
-
-      sendErrorMessage(error_code);
-   }
-
-   private void onConnect(ProxyMessage msg) throws IOException{
-      Socket s;
-      ProxyMessage response = null;
-
-      s = new Socket(msg.ip,msg.port);
-
-      log("Connected to "+s.getInetAddress()+":"+s.getPort());
-
-      if(msg instanceof Socks5Message){
-        response = new Socks5Message(Proxy.SOCKS_SUCCESS,
-                                         s.getLocalAddress(),
-                                         s.getLocalPort());
-      }else{
-        response = new Socks4Message(Socks4Message.REPLY_OK,
-                                     s.getLocalAddress(),s.getLocalPort());
-
-      }
-      response.write(out);
-      startPipe(s);
-   }
-
-   private void onBind(ProxyMessage msg) throws IOException{
-      ProxyMessage response = null;
-
-      if(proxy == null)
-        ss = new ServerSocket(0);
-      else
-        ss = new SocksServerSocket(proxy, msg.ip, msg.port);
-
-      ss.setSoTimeout(acceptTimeout);
-
-      log("Trying accept on "+ss.getInetAddress()+":"+ss.getLocalPort());
-
-      if(msg.version == 5)
-         response = new Socks5Message(Proxy.SOCKS_SUCCESS,ss.getInetAddress(),
-                                                          ss.getLocalPort());
-      else
-         response = new Socks4Message(Socks4Message.REPLY_OK,
-                                      ss.getInetAddress(),
-                                      ss.getLocalPort());
-      response.write(out);
-
-      mode = ACCEPT_MODE;
-
-      pipe_thread1 = Thread.currentThread();
-      pipe_thread2 = new Thread(this);
-      pipe_thread2.start();
-
-      //Make timeout infinit.
-      sock.setSoTimeout(0);
-      int eof=0;
-
-      try{
-        while((eof=in.read())>=0){
-          if(mode != ACCEPT_MODE){
-            if(mode != PIPE_MODE) return;//Accept failed
-
-            remote_out.write(eof);
-            break;
-          }
-        }
-      }catch(EOFException eofe){
-        //System.out.println("EOF exception");
-        return;//Connection closed while we were trying to accept.
-      }catch(InterruptedIOException iioe){ 
-        //Accept thread interrupted us.
-        //System.out.println("Interrupted");
-        if(mode != PIPE_MODE)
-          return;//If accept thread was not successfull return.
-      }finally{
-        //System.out.println("Finnaly!");
-      }
-
-      if(eof < 0)//Connection closed while we were trying to accept;
-        return;
-      
-      //Do not restore timeout, instead timeout is set on the
-      //remote socket. It does not make any difference.
-
-      pipe(in,remote_out);
-   }
-
-   private void onUDP(ProxyMessage msg) throws IOException{
-      if(msg.ip.getHostAddress().equals("0.0.0.0"))
-         msg.ip = sock.getInetAddress();
-      log("Creating UDP relay server for "+msg.ip+":"+msg.port);
-      relayServer = new UDPRelayServer(msg.ip,msg.port,
-                        Thread.currentThread(),sock,auth);
-
-      ProxyMessage response;
-
-      response = new Socks5Message(Proxy.SOCKS_SUCCESS,
-                                   relayServer.relayIP,relayServer.relayPort);
-
-      response.write(out);
-
-      relayServer.start();
-
-      //Make timeout infinit.
-      sock.setSoTimeout(0);
-      try{
-        while(in.read()>=0) /*do nothing*/;
-      }catch(EOFException eofe){
-      }
-   }
-
-//Private methods
-//////////////////
-
-   private void doAccept() throws IOException{
-      Socket s;
-      long startTime = System.currentTimeMillis();
-
-      while(true){
-         s = ss.accept();
-         if(s.getInetAddress().equals(msg.ip)){
-            //got the connection from the right host
-            //Close listenning socket.
-            ss.close();
-            break;
-         }else if(ss instanceof SocksServerSocket){
-            //We can't accept more then one connection
-            s.close();
-            ss.close();
-            throw new SocksException(Proxy.SOCKS_FAILURE);
-         }else{
-            if(acceptTimeout!=0){ //If timeout is not infinit
-               int newTimeout = acceptTimeout-(int)(System.currentTimeMillis()-
-                                                           startTime);
-               if(newTimeout <= 0) throw new InterruptedIOException(
-                                "In doAccept()");
-               ss.setSoTimeout(newTimeout);
-            }
-            s.close(); //Drop all connections from other hosts
-         }
-      }
-
-      //Accepted connection
-      remote_sock = s;
-      remote_in = s.getInputStream();
-      remote_out = s.getOutputStream();
-
-      //Set timeout
-      remote_sock.setSoTimeout(iddleTimeout);
-
-      log("Accepted from "+s.getInetAddress()+":"+s.getPort());
-
-      ProxyMessage response;
-
-      if(msg.version == 5)
-         response = new Socks5Message(Proxy.SOCKS_SUCCESS, s.getInetAddress(),
-                                                           s.getPort());
-      else
-         response = new Socks4Message(Socks4Message.REPLY_OK,
-                                      s.getInetAddress(), s.getPort());
-      response.write(out);
-   }
-
-   protected ProxyMessage readMsg(InputStream in) throws IOException{
-      PushbackInputStream push_in;  
-      if(in instanceof PushbackInputStream)
-         push_in = (PushbackInputStream) in;
-      else
-         push_in = new PushbackInputStream(in);
-
-      int version = push_in.read();
-      push_in.unread(version);
-
-
-      ProxyMessage msg;
-
-      if(version == 5){
-        msg = new Socks5Message(push_in,false);
-      }else if(version == 4){
-        msg = new Socks4Message(push_in,false);
-      }else{
-        throw new SocksException(Proxy.SOCKS_FAILURE);
-      }
-      return msg;
-   }
-
-   private void startPipe(Socket s){
-      mode = PIPE_MODE;
-      remote_sock = s;
-      try{
-         remote_in = s.getInputStream();
-         remote_out = s.getOutputStream();
-         pipe_thread1 = Thread.currentThread();
-         pipe_thread2 = new Thread(this);
-         pipe_thread2.start();
-         pipe(in,remote_out);
-      }catch(IOException ioe){
-      }
-   }
-
-   private void sendErrorMessage(int error_code){
-      ProxyMessage err_msg;
-      if(msg instanceof Socks4Message)
-         err_msg = new Socks4Message(Socks4Message.REPLY_REJECTED);
-      else
-         err_msg = new Socks5Message(error_code);
-      try{
-         err_msg.write(out);
-      }catch(IOException ioe){}
-   }
-
-   private synchronized void abort(){
-      if(mode == ABORT_MODE) return;
-      mode = ABORT_MODE;
-      try{
-         log("Aborting operation");
-         if(remote_sock != null) remote_sock.close();
-         if(sock != null) sock.close();
-         if(relayServer!=null) relayServer.stop();
-         if(ss!=null) ss.close();
-         if(pipe_thread1 != null) pipe_thread1.interrupt();
-         if(pipe_thread2 != null) pipe_thread2.interrupt();
-      }catch(IOException ioe){}
-   }
-
-   static final void log(String s){
-     if(log != null){
-       log.println(s);
-       log.flush();
-     }
-   }
-
-   static final void log(ProxyMessage msg){
-      log("Request version:"+msg.version+
-          "\tCommand: "+command2String(msg.command));
-      log("IP:"+msg.ip +"\tPort:"+msg.port+
-         (msg.version==4?"\tUser:"+msg.user:""));
-   }
-
-   private void pipe(InputStream in,OutputStream out) throws IOException{
-      lastReadTime = System.currentTimeMillis();
-      byte[] buf = new byte[BUF_SIZE];
-      int len = 0;
-      while(len >= 0){
-         try{
-           if(len!=0){
-             out.write(buf,0,len);
-             out.flush();
-           }
-           len= in.read(buf);
-           lastReadTime = System.currentTimeMillis();
-         }catch(InterruptedIOException iioe){
-           if(iddleTimeout == 0) return;//Other thread interrupted us.
-           long timeSinceRead = System.currentTimeMillis() - lastReadTime;
-           if(timeSinceRead >= iddleTimeout - 1000) //-1s for adjustment.
-              return;
-           len = 0;
-
-         }
-      }
-   }
-   static final String command_names[] = {"CONNECT","BIND","UDP_ASSOCIATE"};
-
-   static final String command2String(int cmd){
-      if(cmd > 0 && cmd < 4) return command_names[cmd-1];
-      else return "Unknown Command "+cmd;
-   }
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/Socks4Message.java b/app/src/main/java/net/sourceforge/jsocks/Socks4Message.java
deleted file mode 100644
index 99fb211..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/Socks4Message.java
+++ /dev/null
@@ -1,171 +0,0 @@
-package net.sourceforge.jsocks;
-import java.io.DataInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-
-/**
-  SOCKS4 Reply/Request message.
-*/
-
-public class Socks4Message extends ProxyMessage{
-
-   private byte[] msgBytes;
-   private int msgLength;
-
-   /**
-    * Server failed reply, cmd command for failed request
-    */
-   public Socks4Message(int cmd){
-      super(cmd,null,0);
-      this.user    = null;
-
-      msgLength = 2;
-      msgBytes = new byte[2];
-
-      msgBytes[0] = (byte) 0;
-      msgBytes[1] = (byte) command;
-   }
-
-   /**
-    *  Server successfull reply
-    */
-   public Socks4Message(int cmd,InetAddress ip,int port){
-      this(0,cmd,ip,port,null);
-   }
-
-   /**
-    *  Client request
-    */
-   public Socks4Message(int cmd,InetAddress ip,int port,String user){
-      this(SOCKS_VERSION,cmd,ip,port,user);
-   }
-
-   /**
-    * Most general constructor
-    */
-   public Socks4Message(int version, int cmd,
-                        InetAddress ip,int port,String user){
-      super(cmd,ip,port);
-      this.user    = user;
-      this.version = version;
-
-      msgLength = user == null?8:9+user.length();
-      msgBytes = new byte[msgLength];
-
-      msgBytes[0] = (byte) version;
-      msgBytes[1] = (byte) command;
-      msgBytes[2] = (byte) (port >> 8);
-      msgBytes[3] = (byte) port;
-
-      byte[] addr;
-
-      if(ip != null)
-        addr = ip.getAddress();
-      else{
-        addr = new byte[4];
-        addr[0]=addr[1]=addr[2]=addr[3]=0;
-      }
-      System.arraycopy(addr,0,msgBytes,4,4);
-
-      if(user != null){
-         byte[] buf = user.getBytes();
-         System.arraycopy(buf,0,msgBytes,8,buf.length);
-         msgBytes[msgBytes.length -1 ] = 0;
-      }
-   }
-
-   /**
-    *Initialise from the stream
-    *If clientMode is true attempts to read a server response
-    *otherwise reads a client request
-    *see read for more detail
-    */
-   public Socks4Message(InputStream in, boolean clientMode) throws IOException{
-      msgBytes = null;
-      read(in,clientMode);
-   }
-
-   @Override
-public void read(InputStream in) throws IOException{
-        read(in,true);
-   }
-
-   @Override
-public void read(InputStream in, boolean clientMode) throws IOException{
-       boolean mode4a = false;
-       DataInputStream d_in = new DataInputStream(in);
-       version= d_in.readUnsignedByte();
-       command = d_in.readUnsignedByte();
-       if(clientMode && command != REPLY_OK){
-          String errMsg;
-          if(command >REPLY_OK && command < REPLY_BAD_IDENTD)
-             errMsg = replyMessage[command-REPLY_OK];
-          else
-             errMsg = "Unknown Reply Code";
-          throw new SocksException(command,errMsg);
-       }
-       port = d_in.readUnsignedShort();
-       byte[] addr = new byte[4];
-       d_in.readFully(addr);
-       if (addr[0] == 0 && addr[1] == 0 && addr[2] == 0 && addr[3] != 0)
-          mode4a = true;
-       else {
-          ip=bytes2IP(addr);
-          host = ip.getHostName();
-       }
-       if(!clientMode){
-          StringBuilder sb = new StringBuilder();
-          int b;
-          while ((b = in.read()) != 0)
-             sb.append((char) b);
-          user = sb.toString();
-          if (mode4a) {
-             sb.setLength(0);
-             while ((b = in.read()) != 0)
-                sb.append((char) b);
-             host = sb.toString();
-          }
-       }
-   }
-   @Override
-public void write(OutputStream out) throws IOException{
-      if(msgBytes == null){
-         Socks4Message msg = new Socks4Message(version,command,ip,port,user);
-         msgBytes = msg.msgBytes;
-         msgLength = msg.msgLength;
-      }
-      out.write(msgBytes);
-   }
-
-   //Class methods
-   static InetAddress bytes2IP(byte[] addr){
-      String s = bytes2IPV4(addr,0);
-      try{
-         return InetAddress.getByName(s);
-      }catch(UnknownHostException uh_ex){
-        return null;
-      }
-   }
-
-   //Constants
-
-   static final String[] replyMessage ={
-          "Request Granted",
-          "Request Rejected or Failed",
-          "Failed request, can't connect to Identd",
-          "Failed request, bad user name"};
-
-   static final int SOCKS_VERSION = 4;
-
-   public final static int REQUEST_CONNECT		= 1;
-   public final static int REQUEST_BIND   		= 2;
-
-   public final static int REPLY_OK 			= 90;
-   public final static int REPLY_REJECTED		= 91;
-   public final static int REPLY_NO_CONNECT		= 92;
-   public final static int REPLY_BAD_IDENTD		= 93;
-
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/Socks4Proxy.java b/app/src/main/java/net/sourceforge/jsocks/Socks4Proxy.java
deleted file mode 100644
index 9a17fc2..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/Socks4Proxy.java
+++ /dev/null
@@ -1,107 +0,0 @@
-package net.sourceforge.jsocks;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-
-/**
-  Proxy which describes SOCKS4 proxy.
-*/
-
-public class Socks4Proxy extends Proxy implements Cloneable{
-
-//Data members
-   String user;
-
-//Public Constructors
-//====================
-
-   /**
-     Creates the SOCKS4 proxy
-     @param p Proxy to use to connect to this proxy, allows proxy chaining.
-     @param proxyHost Address of the proxy server.
-     @param proxyPort Port of the proxy server
-     @param user User name to use for identification purposes.
-     @throws UnknownHostException If proxyHost can't be resolved.
-    */
-   public Socks4Proxy(String proxyHost,int proxyPort,String user)
-          throws UnknownHostException{ 
-      super(proxyHost,proxyPort);
-      this.user = new String(user);
-      version = 4;
-   }
-
-   /**
-     Creates the SOCKS4 proxy
-     @param p Proxy to use to connect to this proxy, allows proxy chaining.
-     @param proxyIP Address of the proxy server.
-     @param proxyPort Port of the proxy server
-     @param user User name to use for identification purposes.
-    */
-   public Socks4Proxy(Proxy p,InetAddress proxyIP,int proxyPort,String user){
-      super(p,proxyIP,proxyPort);
-      this.user = new String(user);
-      version = 4;
-   }
-
-   /**
-     Creates the SOCKS4 proxy
-     @param proxyIP Address of the proxy server.
-     @param proxyPort Port of the proxy server
-     @param user User name to use for identification purposes.
-    */
-   public Socks4Proxy(InetAddress proxyIP,int proxyPort,String user){
-      this(null,proxyIP,proxyPort,user);
-   }
-
-//Public instance methods
-//========================
-
-   /**
-    * Creates a clone of this proxy. Changes made to the clone should not
-    * affect this object. 
-    */
-   public Object clone(){
-      Socks4Proxy newProxy = new Socks4Proxy(proxyIP,proxyPort,user);
-      newProxy.chainProxy = chainProxy;
-      return newProxy;
-   }
-
-
-//Public Static(Class) Methods
-//==============================
-
-
-//Protected Methods
-//=================
-
-   protected Proxy copy(){
-       Socks4Proxy copy = new Socks4Proxy(proxyIP,proxyPort,user);
-       copy.chainProxy = chainProxy;
-       return copy;
-    }
-
-   protected ProxyMessage formMessage(int cmd,InetAddress ip,int port){
-       switch(cmd){
-         case SOCKS_CMD_CONNECT:
-           cmd = Socks4Message.REQUEST_CONNECT;
-         break;
-         case SOCKS_CMD_BIND:
-           cmd = Socks4Message.REQUEST_BIND;
-         break;
-         default:
-           return null;
-       }
-       return new Socks4Message(cmd,ip,port,user);
-   }
-   protected ProxyMessage formMessage(int cmd,String host,int port)
-             throws UnknownHostException{
-       return formMessage(cmd,InetAddress.getByName(host),port);
-   }
-   protected ProxyMessage formMessage(InputStream in)
-             throws SocksException,
-                    IOException{
-       return new Socks4Message(in,true);
-   }
-
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/Socks5DatagramSocket.java b/app/src/main/java/net/sourceforge/jsocks/Socks5DatagramSocket.java
deleted file mode 100644
index b847400..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/Socks5DatagramSocket.java
+++ /dev/null
@@ -1,460 +0,0 @@
-package net.sourceforge.jsocks;
-import java.net.*;
-import java.io.*;
-
-/**
-  Datagram socket to interract through the firewall.<BR>
-  Can be used same way as the normal DatagramSocket. One should
-  be carefull though with the datagram sizes used, as additional data
-  is present in both incomming and outgoing datagrams.
-   <p>
-   SOCKS5 protocol allows to send host address as either:
-   <ul>
-    <li> IPV4, normal 4 byte address. (10 bytes header size)
-    <li> IPV6, version 6 ip address (not supported by Java as for now).
-         22 bytes header size.
-    <li> Host name,(7+length of the host name bytes header size).
-   </ul>
-  As with other Socks equivalents, direct addresses are handled
-  transparently, that is data will be send directly when required 
-  by the proxy settings.
-  <p>
-  <b>NOTE:</b><br>
-  Unlike other SOCKS Sockets, it <b>does not</b> support proxy chaining,
-  and will throw an exception if proxy has a chain proxy attached. The
-  reason for that is not my laziness, but rather the restrictions of
-  the SOCKSv5 protocol. Basicaly SOCKSv5 proxy server, needs to know from
-  which host:port datagrams will be send for association, and returns address
-  to which datagrams should be send by the client, but it does not
-  inform client from which host:port it is going to send datagrams, in fact
-  there is even no guarantee they will be send at all and from the same address
-  each time.
- 
- */
-public class Socks5DatagramSocket extends DatagramSocket{
-
-   InetAddress relayIP;
-   int relayPort;
-   Socks5Proxy proxy;
-   private boolean server_mode = false;
-   UDPEncapsulation encapsulation;
-
-
-   /**
-      Construct Datagram socket for communication over SOCKS5 proxy
-      server. This constructor uses default proxy, the one set with
-      Proxy.setDefaultProxy() method. If default proxy is not set or 
-      it is set to version4 proxy, which does not support datagram
-      forwarding, throws SocksException.
-
-    */
-   public Socks5DatagramSocket() throws SocksException,
-                                        IOException{
-      this(Proxy.defaultProxy,0,null);
-   }
-   /**
-      Construct Datagram socket for communication over SOCKS5 proxy
-      server. And binds it to the specified local port.
-      This constructor uses default proxy, the one set with
-      Proxy.setDefaultProxy() method. If default proxy is not set or 
-      it is set to version4 proxy, which does not support datagram
-      forwarding, throws SocksException.
-    */
-   public Socks5DatagramSocket(int port) throws SocksException,
-                                                IOException{
-      this(Proxy.defaultProxy,port,null);
-   }
-   /**
-      Construct Datagram socket for communication over SOCKS5 proxy
-      server. And binds it to the specified local port and address.
-      This constructor uses default proxy, the one set with
-      Proxy.setDefaultProxy() method. If default proxy is not set or 
-      it is set to version4 proxy, which does not support datagram
-      forwarding, throws SocksException.
-    */
-   public Socks5DatagramSocket(int port,InetAddress ip) throws SocksException,
-                                        IOException{
-      this(Proxy.defaultProxy,port,ip);
-   }
-
-   /**
-     Constructs datagram socket for communication over specified proxy.
-     And binds it to the given local address and port. Address of null 
-     and port of 0, signify any availabale port/address.
-     Might throw SocksException, if:
-     <ol>
-      <li> Given version of proxy does not support UDP_ASSOCIATE.
-      <li> Proxy can't be reached.
-      <li> Authorization fails.
-      <li> Proxy does not want to perform udp forwarding, for any reason.
-     </ol>
-     Might throw IOException if binding dtagram socket to given address/port
-     fails.
-     See java.net.DatagramSocket for more details.
-    */
-   public Socks5DatagramSocket(Proxy p,int port,InetAddress ip)
-                                        throws SocksException,
-                                               IOException{
-      super(port,ip);
-      if(p == null) throw new SocksException(Proxy.SOCKS_NO_PROXY);
-      if(!(p instanceof Socks5Proxy)) 
-         throw new SocksException(-1,"Datagram Socket needs Proxy version 5");
-
-      if(p.chainProxy != null)
-           throw new SocksException(Proxy.SOCKS_JUST_ERROR,
-               "Datagram Sockets do not support proxy chaining.");
-
-      proxy =(Socks5Proxy) p.copy();
-
-      ProxyMessage msg = proxy.udpAssociate(super.getLocalAddress(),
-                                            super.getLocalPort());
-      relayIP = msg.ip;
-      if(relayIP.getHostAddress().equals("0.0.0.0")) relayIP = proxy.proxyIP;
-      relayPort = msg.port;
-
-      encapsulation = proxy.udp_encapsulation;
-
-      //debug("Datagram Socket:"+getLocalAddress()+":"+getLocalPort()+"\n");
-      //debug("Socks5Datagram: "+relayIP+":"+relayPort+"\n");
-   }
-
-   /**
-     Used by UDPRelayServer.
-    */
-   Socks5DatagramSocket(boolean server_mode,UDPEncapsulation encapsulation,
-                        InetAddress relayIP,int relayPort)
-                        throws IOException{
-      super();
-      this.server_mode = server_mode;
-      this.relayIP = relayIP;
-      this.relayPort = relayPort;
-      this.encapsulation = encapsulation;
-      this.proxy = null;
-   }
-
-   /**
-     Sends the Datagram either through the proxy or directly depending
-     on current proxy settings and destination address. <BR>
-
-     <B> NOTE: </B> DatagramPacket size should be at least 10 bytes less
-                    than the systems limit.
-
-     <P>
-     See documentation on java.net.DatagramSocket
-     for full details on how to use this method. 
-     @param dp Datagram to send.
-     @throws IOException If error happens with I/O.
-    */
-   public void send(DatagramPacket dp) throws IOException{
-     //If the host should be accessed directly, send it as is.
-     if(!server_mode){
-        super.send(dp);
-        //debug("Sending directly:");
-        return;
-     }
-
-     byte[] head = formHeader(dp.getAddress(),dp.getPort());
-     byte[] buf = new byte[head.length + dp.getLength()];
-     byte[] data = dp.getData();
-     //Merge head and data
-     System.arraycopy(head,0,buf,0,head.length);
-     //System.arraycopy(data,dp.getOffset(),buf,head.length,dp.getLength());
-     System.arraycopy(data,0,buf,head.length,dp.getLength());
-
-     if(encapsulation != null)
-        buf = encapsulation.udpEncapsulate(buf,true);
-
-     super.send(new DatagramPacket(buf,buf.length,relayIP,relayPort));
-   }
-   /**
-     This method allows to send datagram packets with address type DOMAINNAME.
-     SOCKS5 allows to specify host as names rather than ip addresses.Using
-     this method one can send udp datagrams through the proxy, without having
-     to know the ip address of the destination host.
-     <p> 
-     If proxy specified for that socket has an option resolveAddrLocally set
-     to true host will be resolved, and the datagram will be send with address
-     type IPV4, if resolve fails, UnknownHostException is thrown.
-     @param dp Datagram to send, it should contain valid port and data
-     @param host Host name to which datagram should be send.
-     @throws IOException If error happens with I/O, or the host can't be 
-     resolved when proxy settings say that hosts should be resolved locally.
-     @see Socks5Proxy#resolveAddrLocally(boolean)
-    */
-    public void send(DatagramPacket dp, String host) throws IOException {
-		dp.setAddress(InetAddress.getByName(host));
-		super.send(dp);
-	}
-
-   /**
-    * Receives udp packet. If packet have arrived from the proxy relay server,
-    * it is processed and address and port of the packet are set to the
-    * address and port of sending host.<BR>
-    * If the packet arrived from anywhere else it is not changed.<br>
-    * <B> NOTE: </B> DatagramPacket size should be at least 10 bytes bigger
-    * than the largest packet you expect (this is for IPV4 addresses). 
-    * For hostnames and IPV6 it is even more.
-      @param dp Datagram in which all relevent information will be copied.
-    */
-   public void receive(DatagramPacket dp) throws IOException{
-      super.receive(dp);
-
-      if(server_mode){
-        //Drop all datagrams not from relayIP/relayPort
-         int init_length = dp.getLength();
-         int initTimeout = getSoTimeout();
-         long startTime = System.currentTimeMillis();
-
-         while(!relayIP.equals(dp.getAddress()) ||
-                relayPort != dp.getPort()){
-
-           //Restore datagram size
-           dp.setLength(init_length);
-
-           //If there is a non-infinit timeout on this socket
-           //Make sure that it happens no matter how often unexpected
-           //packets arrive.
-           if(initTimeout != 0){
-             int newTimeout = initTimeout - (int)(System.currentTimeMillis() - 
-                                                        startTime);
-             if(newTimeout <= 0) throw new InterruptedIOException(
-                                 "In Socks5DatagramSocket->receive()");
-             setSoTimeout(newTimeout);
-           }
-
-           super.receive(dp);
-         }
-
-         //Restore timeout settings
-         if(initTimeout != 0) setSoTimeout(initTimeout);
-
-      }else if(!relayIP.equals(dp.getAddress()) ||
-                relayPort != dp.getPort()) 
-          return; // Recieved direct packet
-      //If the datagram is not from the relay server, return it it as is.
-
-      byte[] data;
-      data = dp.getData();
-
-      if(encapsulation != null)
-         data = encapsulation.udpEncapsulate(data,false);
-
-      int offset = 0; //Java 1.1
-      //int offset = dp.getOffset(); //Java 1.2
-
-      ByteArrayInputStream bIn = new ByteArrayInputStream(data,offset,
-                                                              dp.getLength());
-
-
-      ProxyMessage msg = new Socks5Message(bIn);
-      dp.setPort(msg.port);
-      dp.setAddress(msg.getInetAddress());
-
-      //what wasn't read by the Message is the data
-      int data_length = bIn.available();
-      //Shift data to the left
-      System.arraycopy(data,offset+dp.getLength()-data_length,
-                       data,offset,data_length);
-
-
-      dp.setLength(data_length);
-   }
-
-   /**
-    * Returns port assigned by the proxy, to which datagrams are relayed.
-    * It is not the same port to which other party should send datagrams.
-      @return Port assigned by socks server to which datagrams are send
-      for association.
-    */
-   public int getLocalPort(){
-     if(server_mode) return super.getLocalPort();
-     return relayPort;
-   }
-   /**
-    * Address assigned by the proxy, to which datagrams are send for relay.
-    * It is not necesseraly the same address, to which other party should send
-    * datagrams.
-      @return Address to which datagrams are send for association.
-    */
-   public InetAddress getLocalAddress(){
-     if(server_mode) return super.getLocalAddress();
-     return relayIP;
-   }
-
-   /**
-    * Closes datagram socket, and proxy connection.
-    */
-   public void close(){
-      if(!server_mode) proxy.endSession();
-      super.close();
-   }
-
-   /**
-     This method checks wether proxy still runs udp forwarding service
-     for this socket.
-     <p>
-     This methods checks wether the primary connection to proxy server
-     is active. If it is, chances are that proxy continues to forward
-     datagrams being send from this socket. If it was closed, most likely
-     datagrams are no longer being forwarded by the server.
-     <p>
-     Proxy might decide to stop forwarding datagrams, in which case it
-     should close primary connection. This method allows to check, wether
-     this have been done.
-     <p>
-     You can specify timeout for which we should be checking EOF condition
-     on the primary connection. Timeout is in milliseconds. Specifying 0 as
-     timeout implies infinity, in which case method will block, until 
-     connection to proxy is closed or an error happens, and then return false.
-     <p>
-     One possible scenario is to call isProxyactive(0) in separate thread,
-     and once it returned notify other threads about this event.
-
-     @param timeout For how long this method should block, before returning.
-     @return true if connection to proxy is active, false if eof or error
-             condition have been encountered on the connection.
-   */
-   public boolean isProxyAlive(int timeout){
-     if(server_mode) return false;
-     if(proxy != null){
-         try{
-           proxy.proxySocket.setSoTimeout(timeout);
-
-           int eof = proxy.in.read();
-           if(eof < 0) return false; // EOF encountered.
-           else return true;         // This really should not happen
-
-         }catch(InterruptedIOException iioe){
-            return true;          // read timed out.
-         }catch(IOException ioe){
-            return false;
-         }
-     }
-     return false;
-   }
-
-//PRIVATE METHODS
-//////////////////
-
-
-   private byte[] formHeader(InetAddress ip, int port){
-      Socks5Message request = new Socks5Message(0,ip,port);
-      request.data[0] = 0;
-      return request.data;
-   }
-
-
-/*======================================================================
-
-//Mainly Test functions
-//////////////////////
-
-   private String bytes2String(byte[] b){
-      String s="";
-      char[] hex_digit = { '0','1','2','3','4','5','6','7','8','9',
-                           'A','B','C','D','E','F'}; 
-      for(int i=0;i<b.length;++i){
-          int i1 = (b[i] & 0xF0) >> 4;
-          int i2 = b[i] & 0xF;
-          s+=hex_digit[i1];
-          s+=hex_digit[i2];
-          s+=" ";
-      }
-      return s;
-   }
-   private static final void debug(String s){
-      if(DEBUG)
-         System.out.print(s);
-   }
-
-   private static final boolean DEBUG = true;
-
-
-   public static void usage(){
-      System.err.print(
-    "Usage: java Socks.SocksDatagramSocket host port [socksHost socksPort]\n");
-   }
-
-   static final int defaultProxyPort = 1080;           //Default Port
-   static final String defaultProxyHost = "www-proxy"; //Default proxy
-
-   public static void main(String args[]){
-      int port;
-      String host;
-      int proxyPort;
-      String proxyHost;
-      InetAddress ip;
-
-      if(args.length > 1 && args.length < 5){
-	 try{
-
-	     host = args[0];
-	     port = Integer.parseInt(args[1]);
-
-	     proxyPort =(args.length > 3)? Integer.parseInt(args[3])	     
-	                                 : defaultProxyPort;
-
-	     host = args[0];
-	     ip = InetAddress.getByName(host);
-
-	     proxyHost =(args.length > 2)? args[2]
-	                                 : defaultProxyHost;
-
-	     Proxy.setDefaultProxy(proxyHost,proxyPort);
-	     Proxy p = Proxy.getDefaultProxy();
-	     p.addDirect("lux");
-
-
-	     DatagramSocket ds = new Socks5DatagramSocket();
-	                             
-
-	     BufferedReader in = new BufferedReader(
-				 new InputStreamReader(System.in));
-             String s;
-
-             System.out.print("Enter line:");
-             s = in.readLine();
-
-	     while(s != null){
-                byte[] data = (s+"\r\n").getBytes();
-                DatagramPacket dp = new DatagramPacket(data,0,data.length,
-                                        ip,port);
-                System.out.println("Sending to: "+ip+":"+port);
-                ds.send(dp);
-	        dp = new DatagramPacket(new byte[1024],1024);
-
-	        System.out.println("Trying to recieve on port:"+
-	                            ds.getLocalPort());
-	        ds.receive(dp);
-	        System.out.print("Recieved:\n"+
-	                         "From:"+dp.getAddress()+":"+dp.getPort()+
-	                         "\n\n"+
-                new String(dp.getData(),dp.getOffset(),dp.getLength())+"\n"
-                );
-                System.out.print("Enter line:");
-                s = in.readLine();
-
-	     }
-	     ds.close();
-	     System.exit(1);
-
-	 }catch(SocksException s_ex){
-	   System.err.println("SocksException:"+s_ex);
-	   s_ex.printStackTrace();
-	   System.exit(1); 
-	 }catch(IOException io_ex){
-	   io_ex.printStackTrace();
-	   System.exit(1);
-	 }catch(NumberFormatException num_ex){
-	   usage();
-	   num_ex.printStackTrace();
-	   System.exit(1);
-	 }
-
-      }else{
-	usage();
-      }
-   }
-*/
-
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/Socks5Message.java b/app/src/main/java/net/sourceforge/jsocks/Socks5Message.java
deleted file mode 100644
index ea2a321..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/Socks5Message.java
+++ /dev/null
@@ -1,292 +0,0 @@
-package net.sourceforge.jsocks;
-
-import java.io.DataInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-
-/**
- SOCKS5 request/response message.
-*/
-
-public class Socks5Message extends ProxyMessage{
-   /** Address type of given message*/
-   public int addrType;
-
-   byte[] data;
-
-   /**
-    Server error response.
-    @param cmd Error code.
-   */
-   public Socks5Message(int cmd){
-      super(cmd,null,0);
-      data = new byte[3];
-      data[0] = SOCKS_VERSION; //Version.
-      data[1] = (byte)cmd;     //Reply code for some kind of failure.
-      data[2] = 0;             //Reserved byte.
-   }
-
-   /**
-    Construct client request or server response.
-    @param cmd - Request/Response code.
-    @param ip  - IP field.
-    @paarm port - port field.
-   */
-   public Socks5Message(int cmd,InetAddress ip,int port){
-      super(cmd,ip,port);
-      this.host = ip==null?"0.0.0.0":ip.getHostName();
-      this.version = SOCKS_VERSION;
-
-      byte[] addr;
-
-      if(ip == null){
-         addr = new byte[4];
-         addr[0]=addr[1]=addr[2]=addr[3]=0;
-      }else
-         addr = ip.getAddress();
-
-      addrType = addr.length == 4 ? SOCKS_ATYP_IPV4
-                                  : SOCKS_ATYP_IPV6;
- 
-      data = new byte[6+addr.length];
-      data[0] = (byte) SOCKS_VERSION;		//Version
-      data[1] = (byte) command;			//Command
-      data[2] = (byte) 0;			//Reserved byte
-      data[3] = (byte) addrType;		//Address type
- 
-      //Put Address
-      System.arraycopy(addr,0,data,4,addr.length);
-      //Put port
-      data[data.length-2] = (byte)(port>>8);
-      data[data.length-1] = (byte)(port);
-   }
-
-
-   /**
-    Construct client request or server response.
-    @param cmd - Request/Response code.
-    @param hostName  - IP field as hostName, uses ADDR_TYPE of HOSTNAME.
-    @paarm port - port field.
-   */
-   public Socks5Message(int cmd,String hostName,int port){
-      super(cmd,null,port);
-      this.host = hostName;
-      this.version = SOCKS_VERSION;
-
-      //System.out.println("Doing ATYP_DOMAINNAME");
-
-      addrType = SOCKS_ATYP_DOMAINNAME;
-      byte addr[] = hostName.getBytes();
- 
-      data =new byte[7+addr.length];
-      data[0] = (byte) SOCKS_VERSION;		//Version
-      data[1] = (byte) command;			//Command
-      data[2] = (byte) 0;			//Reserved byte
-      data[3] = (byte) SOCKS_ATYP_DOMAINNAME;	//Address type
-      data[4] = (byte) addr.length;		//Length of the address
-
-      //Put Address
-      System.arraycopy(addr,0,data,5,addr.length);
-      //Put port
-      data[data.length-2] = (byte)(port >>8);
-      data[data.length-1] = (byte)(port);
-   }
-
-   /**
-     Initialises Message from the stream. Reads server response from
-     given stream.
-     @param in Input stream to read response from.
-     @throws SocksException If server response code is not SOCKS_SUCCESS(0), or
-     if any error with protocol occurs.
-     @throws IOException If any error happens with I/O.
-   */
-   public Socks5Message(InputStream in) throws SocksException,
-                                              IOException{
-      this(in,true);
-   }
-
-   /**
-     Initialises Message from the stream. Reads server response or client 
-     request from given stream.
-     
-     @param in Input stream to read response from.
-     @param clinetMode If true read server response, else read client request.
-     @throws SocksException If server response code is not SOCKS_SUCCESS(0) and
-     reading in client mode, or if any error with protocol occurs.
-     @throws IOException If any error happens with I/O.
-   */
-   public Socks5Message(InputStream in,boolean clientMode)throws SocksException,
-                                              IOException{
-      read(in,clientMode);
-   }
-
-
-   /**
-     Initialises Message from the stream. Reads server response from
-     given stream.
-     @param in Input stream to read response from.
-     @throws SocksException If server response code is not SOCKS_SUCCESS(0), or
-     if any error with protocol occurs.
-     @throws IOException If any error happens with I/O.
-   */
-   public void read(InputStream in) throws SocksException,
-                                           IOException{
-       read(in,true);
-   }
-
-
-   /**
-     Initialises Message from the stream. Reads server response or client 
-     request from given stream.
-     
-     @param in Input stream to read response from.
-     @param clinetMode If true read server response, else read client request.
-     @throws SocksException If server response code is not SOCKS_SUCCESS(0) and
-     reading in client mode, or if any error with protocol occurs.
-     @throws IOException If any error happens with I/O.
-   */
-   public void read(InputStream in,boolean clientMode) throws SocksException,
-                                           IOException{
-      data = null;
-      ip = null;
-
-      DataInputStream di = new DataInputStream(in);
-
-      version = di.readUnsignedByte();
-      command = di.readUnsignedByte();
-      if(clientMode && command != 0)
-        throw new SocksException(command);
-
-      @SuppressWarnings("unused")
-      int reserved = di.readUnsignedByte();
-      addrType = di.readUnsignedByte();
-
-      byte addr[];
-
-      switch(addrType){
-         case SOCKS_ATYP_IPV4:
-            addr = new byte[4];
-            di.readFully(addr);
-            host = bytes2IPV4(addr,0);
-         break;
-         case SOCKS_ATYP_IPV6:
-           addr = new byte[SOCKS_IPV6_LENGTH];//I believe it is 16 bytes,huge!
-           di.readFully(addr);
-           host = bytes2IPV6(addr,0);
-         break;
-         case SOCKS_ATYP_DOMAINNAME:
-           //System.out.println("Reading ATYP_DOMAINNAME");
-           addr = new byte[di.readUnsignedByte()];//Next byte shows the length
-           di.readFully(addr);
-           host = new String(addr);
-         break;
-         default:
-            throw(new SocksException(Proxy.SOCKS_JUST_ERROR));
-      }
-
-      port = di.readUnsignedShort();
-
-      if(addrType != SOCKS_ATYP_DOMAINNAME && doResolveIP){
-         try{
-            ip = InetAddress.getByName(host);
-         }catch(UnknownHostException uh_ex){
-         }
-      }
-   }
-
-   /**
-    Writes the message to the stream.
-    @param out Output stream to which message should be written.
-   */
-   public void write(OutputStream out)throws SocksException,
-                                             IOException{
-     if(data == null){
-       Socks5Message msg;
-
-       if(addrType == SOCKS_ATYP_DOMAINNAME)
-          msg = new Socks5Message(command,host,port);
-       else{
-          if(ip == null){
-             try{
-               ip = InetAddress.getByName(host);
-             }catch(UnknownHostException uh_ex){
-               throw new SocksException(Proxy.SOCKS_JUST_ERROR);
-             }
-          }
-          msg = new Socks5Message(command,ip,port);
-       }
-       data = msg.data;
-     }
-     out.write(data);
-   }
-
-   /**
-    Returns IP field of the message as IP, if the message was created
-    with ATYP of HOSTNAME, it will attempt to resolve the hostname,
-    which might fail.
-    @throws UnknownHostException if host can't be resolved.
-   */
-   public InetAddress getInetAddress() throws UnknownHostException{
-     if(ip!=null) return ip;
-
-     return (ip=InetAddress.getByName(host));
-   }
-
-   /**
-     Returns string representation of the message.
-   */
-   public String toString(){
-      String s=
-        "Socks5Message:"+"\n"+
-        "VN   "+version+"\n"+
-        "CMD  "+command+"\n"+
-        "ATYP "+addrType+"\n"+
-        "ADDR "+host+"\n"+
-        "PORT "+port+"\n";
-      return s;
-   }
-            
-
-   /**
-    *Wether to resolve hostIP returned from SOCKS server
-    *that is wether to create InetAddress object from the
-    *hostName string
-    */
-   static public boolean resolveIP(){ return doResolveIP;}
-
-   /**
-    *Wether to resolve hostIP returned from SOCKS server
-    *that is wether to create InetAddress object from the
-    *hostName string
-    *@param doResolve Wether to resolve hostIP from SOCKS server.
-    *@return Previous value.
-    */
-   static public boolean resolveIP(boolean doResolve){
-      boolean old = doResolveIP;
-      doResolveIP = doResolve;
-      return old;
-   }
-
-   /*
-   private static final void debug(String s){
-      if(DEBUG)
-         System.out.print(s);
-   }
-   private static final boolean DEBUG = false;
-   */
-
-   //SOCKS5 constants
-   public static final int SOCKS_VERSION		=5;
-
-   public static final int SOCKS_ATYP_IPV4		=0x1; //Where is 2??
-   public static final int SOCKS_ATYP_DOMAINNAME	=0x3; //!!!!rfc1928
-   public static final int SOCKS_ATYP_IPV6		=0x4;
-
-   public static final int SOCKS_IPV6_LENGTH		=16;
-
-   static boolean doResolveIP = true;
-
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/Socks5Proxy.java b/app/src/main/java/net/sourceforge/jsocks/Socks5Proxy.java
deleted file mode 100644
index aa9c643..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/Socks5Proxy.java
+++ /dev/null
@@ -1,231 +0,0 @@
-package net.sourceforge.jsocks;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.InetAddress;
-import java.net.Socket;
-import java.net.SocketException;
-import java.net.UnknownHostException;
-import java.util.Enumeration;
-import java.util.Hashtable;
-
-/**
- SOCKS5 Proxy.
-*/
-
-public class Socks5Proxy extends Proxy implements Cloneable{
-
-//Data members
-   private Hashtable<Integer, Authentication> authMethods = new Hashtable<Integer, Authentication>();
-   private int selectedMethod;
-
-   boolean resolveAddrLocally = true;
-   UDPEncapsulation udp_encapsulation=null;
-
-
-//Public Constructors
-//====================
-
-   /**
-     Creates SOCKS5 proxy.
-     @param proxyHost Host on which a Proxy server runs.
-     @param proxyPort Port on which a Proxy server listens for connections.
-     @throws UnknownHostException If proxyHost can't be resolved.
-   */
-   public Socks5Proxy(String proxyHost,int proxyPort)
-          throws UnknownHostException{ 
-      super(proxyHost,proxyPort);
-      version = 5;
-      setAuthenticationMethod(0,new AuthenticationNone());
-   }
-
-
-   /**
-     Creates SOCKS5 proxy.
-     @param proxyIP Host on which a Proxy server runs.
-     @param proxyPort Port on which a Proxy server listens for connections.
-   */
-   public Socks5Proxy(InetAddress proxyIP,int proxyPort){
-      super(proxyIP,proxyPort);
-      version = 5;
-      setAuthenticationMethod(0,new AuthenticationNone());
-   }
-
-
-//Public instance methods
-//========================
-
-
-   /**
-    * Wether to resolve address locally or to let proxy do so.
-      <p>
-      SOCKS5 protocol allows to send host names rather then IPs in the
-      requests, this option controls wether the hostnames should be send
-      to the proxy server as names, or should they be resolved locally.
-      @param doResolve Wether to perform resolution locally.
-      @return Previous settings.
-    */
-   public boolean resolveAddrLocally(boolean doResolve){
-      boolean old = resolveAddrLocally;
-      resolveAddrLocally = doResolve;
-      return old;
-   }
-   /**
-    Get current setting on how the addresses should be handled.
-    @return Current setting for address resolution.
-    @see Socks5Proxy#resolveAddrLocally(boolean doResolve)
-   */
-   public boolean resolveAddrLocally(){
-      return resolveAddrLocally;
-   }
-
-   /**
-     Adds another authentication method.
-     @param methodId Authentication method id, see rfc1928
-     @param method Implementation of Authentication
-     @see Authentication
-   */
-   public boolean setAuthenticationMethod(int methodId,
-                                          Authentication method){
-      if(methodId<0 || methodId > 255)
-          return false;
-      if(method == null){
-        //Want to remove a particular method
-	return (authMethods.remove(new Integer(methodId)) != null);
-      }else{//Add the method, or rewrite old one
-	authMethods.put(new Integer(methodId),method);
-      }
-      return true;
-   }
-   
-   /**
-    Get authentication method, which corresponds to given method id
-    @param methodId Authentication method id.
-    @return Implementation for given method or null, if one was not set.
-   */
-   public Authentication getAuthenticationMethod(int methodId){
-      Object method = authMethods.get(new Integer(methodId));
-      if(method == null) return null;
-      return (Authentication)method;
-   }
-
-   /**
-    Creates a clone of this Proxy.
-   */
-   @SuppressWarnings("unchecked")
-public Object clone(){
-      Socks5Proxy newProxy = new Socks5Proxy(proxyIP,proxyPort);
-      newProxy.authMethods = (Hashtable<Integer, Authentication>) this.authMethods.clone();
-      newProxy.resolveAddrLocally = resolveAddrLocally;
-      newProxy.chainProxy = chainProxy;
-      return newProxy;
-   }
-
-//Public Static(Class) Methods
-//==============================
-
-
-//Protected Methods
-//=================
-
-   protected Proxy copy(){
-       Socks5Proxy copy = new Socks5Proxy(proxyIP,proxyPort);
-       copy.authMethods = this.authMethods; //same Hash, no copy
-       copy.chainProxy = this.chainProxy;
-       copy.resolveAddrLocally = this.resolveAddrLocally;
-       return copy;
-    }
-   /**
-    *
-    *
-    */
-   protected void startSession()throws SocksException{
-      super.startSession();
-      Authentication auth;
-      Socket ps = proxySocket; //The name is too long
-
-      try{
-
-	 byte nMethods = (byte) authMethods.size();  //Number of methods
-
-         byte[] buf = new byte[2+nMethods]; //2 is for VER,NMETHODS
-         buf[0] = (byte) version;
-         buf[1] = nMethods;                 //Number of methods 
-         int i=2;
-
-         Enumeration<Integer> ids = authMethods.keys();
-         while(ids.hasMoreElements())
-            buf[i++] = (byte)((Integer)ids.nextElement()).intValue();
-
-         out.write(buf);
-         out.flush();
-
-         int versionNumber  = in.read();
-         selectedMethod = in.read();
-
-         if(versionNumber < 0 || selectedMethod < 0){
-           //EOF condition was reached
-           endSession();
-           throw(new SocksException(SOCKS_PROXY_IO_ERROR,
-                 "Connection to proxy lost."));
-         }
-         if(versionNumber < version){
-           //What should we do??
-         }
-         if(selectedMethod == 0xFF){ //No method selected
-            ps.close();
-            throw ( new SocksException(SOCKS_AUTH_NOT_SUPPORTED));
-         }
-
-         auth = getAuthenticationMethod(selectedMethod);
-         if(auth == null){
-            //This shouldn't happen, unless method was removed by other
-            //thread, or the server stuffed up
-            throw(new SocksException(SOCKS_JUST_ERROR,
-                      "Speciefied Authentication not found!"));
-         }
-         Object[] in_out = auth.doSocksAuthentication(selectedMethod,ps);
-         if(in_out == null){
-            //Authentication failed by some reason
-            throw(new SocksException(SOCKS_AUTH_FAILURE));
-         }
-         //Most authentication methods are expected to return
-         //simply the input/output streams associated with
-         //the socket. However if the auth. method requires
-         //some kind of encryption/decryption being done on the
-         //connection it should provide classes to handle I/O.
-
-         in = (InputStream) in_out[0];
-         out = (OutputStream) in_out[1];
-         if(in_out.length > 2) 
-            udp_encapsulation = (UDPEncapsulation) in_out[2];
-
-      }catch(SocksException s_ex){
-         throw s_ex;
-      }catch(UnknownHostException uh_ex){
-         throw(new SocksException(SOCKS_PROXY_NO_CONNECT));
-      }catch(SocketException so_ex){
-         throw(new SocksException(SOCKS_PROXY_NO_CONNECT));
-      }catch(IOException io_ex){
-         //System.err.println(io_ex);
-         throw(new SocksException(SOCKS_PROXY_IO_ERROR,""+io_ex));
-      }
-   }
-
-   protected ProxyMessage formMessage(int cmd,InetAddress ip,int port){
-       return new Socks5Message(cmd,ip,port);
-   }
-   protected ProxyMessage formMessage(int cmd,String host,int port)
-             throws UnknownHostException{
-       if(resolveAddrLocally)
-          return formMessage(cmd,InetAddress.getByName(host),port);
-       else
-          return new Socks5Message(cmd,host,port);
-   }
-   protected ProxyMessage formMessage(InputStream in)
-             throws SocksException,
-                    IOException{
-       return new Socks5Message(in);
-   }
-
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/SocksException.java b/app/src/main/java/net/sourceforge/jsocks/SocksException.java
deleted file mode 100644
index 764587f..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/SocksException.java
+++ /dev/null
@@ -1,80 +0,0 @@
-package net.sourceforge.jsocks;
-
-/**
- Exception thrown by various socks classes to indicate errors
- with protocol or unsuccessful server responses.
-*/
-public class SocksException extends java.io.IOException{
-	private static final long serialVersionUID = 6141184566248512277L;
-
-   /**
-    Construct a SocksException with given error code.
-    <p>
-    Tries to look up message which corresponds to this error code.
-    @param errCode Error code for this exception.
-   */
-   public SocksException(int errCode){
-       this.errCode = errCode;
-       if((errCode >> 16) == 0){
-          //Server reply error message
-          errString = errCode <= serverReplyMessage.length ?
-                      serverReplyMessage[errCode] :
-                      UNASSIGNED_ERROR_MESSAGE;
-       }else{
-          //Local error
-          errCode = (errCode >> 16) -1;
-          errString = errCode <= localErrorMessage.length ?
-                      localErrorMessage[errCode] :
-                      UNASSIGNED_ERROR_MESSAGE;
-       }
-   }
-   /**
-    Constructs a SocksException with given error code and message.
-    @param errCode  Error code.
-    @param errString Error Message.
-   */
-   public SocksException(int errCode,String errString){
-       this.errCode = errCode;
-       this.errString = errString;
-   }
-   /**
-    Get the error code associated with this exception.
-    @return Error code associated with this exception.
-   */
-   public int getErrorCode(){
-      return errCode;
-   }
-   /**
-    Get human readable representation of this exception.
-    @return String represntation of this exception.
-   */
-   public String toString(){
-      return errString;
-   }
-
-   static final String UNASSIGNED_ERROR_MESSAGE =
-                  "Unknown error message";
-   static final String serverReplyMessage[] = { 
-                  "Succeeded", 
-                  "General SOCKS server failure",
-                  "Connection not allowed by ruleset",
-                  "Network unreachable",
-                  "Host unreachable",
-                  "Connection refused",
-                  "TTL expired",
-                  "Command not supported",
-                  "Address type not supported" };
-
-   static final String localErrorMessage[] ={
-                  "SOCKS server not specified",
-                  "Unable to contact SOCKS server",
-                  "IO error",
-                  "None of Authentication methods are supported",
-                  "Authentication failed",
-                  "General SOCKS fault" };
-
-   String errString;
-   public int errCode;
-
-}//End of SocksException class
-
diff --git a/app/src/main/java/net/sourceforge/jsocks/SocksServerSocket.java b/app/src/main/java/net/sourceforge/jsocks/SocksServerSocket.java
deleted file mode 100644
index 179e9c4..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/SocksServerSocket.java
+++ /dev/null
@@ -1,164 +0,0 @@
-package net.sourceforge.jsocks;
-
-import java.net.*;
-import java.io.*;
-
-/**
-   SocksServerSocket allows to accept connections from one particular
-   host through the SOCKS4 or SOCKS5 proxy.
-*/
-public class SocksServerSocket extends ServerSocket{
-   //Data members
-   protected Proxy proxy;
-   protected String localHost;
-   protected InetAddress localIP;
-   protected int localPort;
-
-   boolean doing_direct = false;
-   InetAddress  remoteAddr;
-
-   /**
-    *Creates ServerSocket capable of accepting one connection
-    *through the firewall, uses given proxy.
-    *@param host Host from which the connection should be recieved.
-    *@param port Port number of the primary connection.
-    */
-   public SocksServerSocket(String host, int port) throws SocksException,
-			UnknownHostException, IOException {
-
-		super(0);
-		remoteAddr = InetAddress.getByName(host);
-		doDirect();
-	}
-
-   /**
-    * Creates ServerSocket capable of accepting one connection
-    * through the firewall, uses default Proxy.
-    *@param ip Host from which the connection should be recieved.
-    *@param port Port number of the primary connection.
-    */
-   public SocksServerSocket(InetAddress ip, int port) throws SocksException,
-                                                             IOException{
-      this(Proxy.defaultProxy,ip,port);
-   }
-
-   /**
-    *Creates ServerSocket capable of accepting one connection
-    *through the firewall, uses given proxy.
-    *@param ip   Host from which the connection should be recieved.
-    *@param port Port number of the primary connection.
-    */
-    public SocksServerSocket(Proxy p, InetAddress ip, int port)
-			throws SocksException, IOException {
-		super(0);
-
-		remoteAddr = ip;
-		doDirect();
-	}
-
-
-   /**
-    * Accepts the incoming connection.
-    */
-   public Socket accept() throws IOException{
-      Socket s;
-
-      if(!doing_direct){
-         if(proxy == null) return null;
-
-         ProxyMessage msg = proxy.accept();
-         s = msg.ip == null? new SocksSocket(msg.host,msg.port,proxy)
-                                  : new SocksSocket(msg.ip,msg.port,proxy);
-         //Set timeout back to 0
-         proxy.proxySocket.setSoTimeout(0);
-      }else{ //Direct Connection
-
-          //Mimic the proxy behaviour,
-          //only accept connections from the speciefed host.
-          while(true){
-            s = super.accept();
-            if(s.getInetAddress().equals(remoteAddr)){
-               //got the connection from the right host
-               //Close listenning socket.
-               break;
-            }else
-               s.close(); //Drop all connections from other hosts
-          }
-
-      }
-      proxy = null;
-      //Return accepted socket
-      return s;
-   }
-
-   /**
-    * Closes the connection to proxy if socket have not been accepted, if
-    * the direct connection is used, closes direct ServerSocket. If the 
-    * client socket have been allready accepted, does nothing.
-    */
-   public void close() throws IOException{
-      super.close();
-      if(proxy != null) proxy.endSession();
-      proxy = null;
-   }
-
-   /**
-     Get the name of the host proxy is using to listen for incoming
-     connection.
-     <P>
-     Usefull when address is returned by proxy as the hostname.
-     @return the hostname of the address proxy is using to listen
-     for incoming connection.
-    */
-   public String getHost(){
-      return localHost;
-   }
-
-   /**
-    * Get address assigned by proxy to listen for incomming
-    * connections, or the local machine address if doing direct
-    * connection.
-    */
-   public InetAddress getInetAddress(){
-      if(localIP == null){
-	 try{
-	   localIP = InetAddress.getByName(localHost);
-	 }catch(UnknownHostException e){
-	   return null;
-	 }
-      }
-      return localIP;
-   }
-
-   /**
-    *  Get port assigned by proxy to listen for incoming connections, or
-       the port chosen by local system, if accepting directly.
-    */
-   public int getLocalPort(){
-      return localPort;
-   }
-
-   /**
-    Set Timeout.
-
-    @param timeout Amount of time in milliseconds, accept should wait for
-                   incoming connection before failing with exception.
-                   Zero timeout implies infinity.
-   */
-   public void setSoTimeout(int timeout) throws SocketException{
-      super.setSoTimeout(timeout);
-      if(!doing_direct) proxy.proxySocket.setSoTimeout(timeout);
-   }
-
-
-//Private Methods
-//////////////////
-
-   private void doDirect(){
-      doing_direct = true;
-      localPort = super.getLocalPort();
-      localIP = super.getInetAddress();
-      localHost = localIP.getHostName();
-   }
-
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/SocksSocket.java b/app/src/main/java/net/sourceforge/jsocks/SocksSocket.java
deleted file mode 100644
index cf9ff65..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/SocksSocket.java
+++ /dev/null
@@ -1,291 +0,0 @@
-package net.sourceforge.jsocks;
-
-import java.net.*;
-import java.io.*;
-
-/**
- * SocksSocket tryies to look very similar to normal Socket,
- * while allowing connections through the SOCKS4 or 5 proxy.
- * To use this class you will have to identify proxy you need
- * to use, Proxy class allows you to set default proxy, which
- * will be used by all Socks aware sockets. You can also create
- * either Socks4Proxy or Socks5Proxy, and use them by passing to the 
- * appropriate constructors.
- * <P>
- * Using Socks package can be as easy as that:
- *
- * <pre><tt>
- *
- *     import Socks.*;
- *     ....
- *
- *     try{
- *        //Specify SOCKS5 proxy
- *        Proxy.setDefaultProxy("socks-proxy",1080);
- *
- *        //OR you still use SOCKS4
- *        //Code below uses SOCKS4 proxy
- *        //Proxy.setDefaultProxy("socks-proxy",1080,userName);
- *
- *        Socket s = SocksSocket("some.host.of.mine",13);
- *        readTimeFromSock(s);
- *     }catch(SocksException sock_ex){
- *        //Usually it will turn in more or less meaningfull message
- *        System.err.println("SocksException:"+sock_ex);
- *     }
- *
- * </tt></pre>
- *<P>
- * However if the need exist for more control, like resolving addresses
- * remotely, or using some non-trivial authentication schemes, it can be done.
- */
-
-public class SocksSocket extends Socket{
-   //Data members
-   protected Proxy proxy;
-   protected String localHost, remoteHost;
-   protected InetAddress localIP, remoteIP;
-   protected int localPort,remotePort;
-
-   private Socket directSock = null;
-
-   /**
-    * Tryies to connect to given host and port
-    * using default proxy. If no default proxy speciefied
-    * it throws SocksException with error code SOCKS_NO_PROXY.
-      @param host Machine to connect to.
-      @param port Port to which to connect.
-    * @see SocksSocket#SocksSocket(Proxy,String,int)
-    * @see Socks5Proxy#resolveAddrLocally
-    */
-   public SocksSocket(String host,int port)
-	  throws SocksException,UnknownHostException{
-      this(Proxy.defaultProxy,host,port);
-   }
-   /**
-    * Connects to host port using given proxy server.
-      @param p Proxy to use.
-      @param host Machine to connect to.
-      @param port Port to which to connect.
-      @throws UnknownHostException 
-      If one of the following happens:
-      <ol>
-
-      <li> Proxy settings say that address should be resolved locally, but
-           this fails.
-      <li> Proxy settings say that the host should be contacted directly but
-           host name can't be resolved. 
-      </ol>
-      @throws SocksException
-      If one of the following happens:
-      <ul>
-       <li> Proxy is is null.
-       <li> Proxy settings say that the host should be contacted directly but
-            this fails.
-       <li> Socks Server can't be contacted.
-       <li> Authentication fails.
-       <li> Connection is not allowed by the SOCKS proxy.
-       <li> SOCKS proxy can't establish the connection.
-       <li> Any IO error occured.
-       <li> Any protocol error occured.
-      </ul>
-      @throws IOexception if anything is wrong with I/O.
-      @see Socks5Proxy#resolveAddrLocally
-    */
-    public SocksSocket(Proxy p, String host, int port) throws SocksException,
-			UnknownHostException {
-		remoteHost = host;
-		remotePort = port;
-		remoteIP = InetAddress.getByName(host);
-		doDirect();
-	}
-
-   /**
-      Connects to given ip and port using given Proxy server.
-      @param p Proxy to use.
-      @param ip Machine to connect to.
-      @param port Port to which to connect.
-
-    */
-   public SocksSocket(InetAddress ip, int port) throws SocksException{
-      this.remoteIP = ip;
-      this.remotePort = port;
-      this.remoteHost = ip.getHostName();
-      doDirect();
-   }
-
-
-   /**
-    * These 2 constructors are used by the SocksServerSocket.
-    * This socket simply overrides remoteHost, remotePort
-    */
-   protected SocksSocket(String  host,int port,Proxy proxy){
-      this.remotePort = port;
-      this.proxy = proxy;
-      this.localIP = proxy.proxySocket.getLocalAddress();
-      this.localPort = proxy.proxySocket.getLocalPort();
-      this.remoteHost = host;
-   }
-   protected SocksSocket(InetAddress ip,int port,Proxy proxy){
-      remoteIP = ip;
-      remotePort = port;
-      this.proxy = proxy;
-      this.localIP = proxy.proxySocket.getLocalAddress();
-      this.localPort = proxy.proxySocket.getLocalPort();
-      remoteHost = remoteIP.getHostName();
-   }
-
-   /**
-    * Same as Socket
-    */
-   public void close() throws IOException{
-      if(proxy!= null)proxy.endSession();
-      proxy = null;
-   }
-   /**
-    * Same as Socket
-    */
-   public InputStream getInputStream(){
-      return proxy.in;
-   }
-   /**
-    * Same as Socket
-    */
-   public OutputStream getOutputStream(){
-      return proxy.out;
-   }
-   /**
-    * Same as Socket
-    */
-   public int getPort(){
-      return remotePort;
-   }
-   /**
-    * Returns remote host name, it is usefull in cases when addresses
-    * are resolved by proxy, and we can't create InetAddress object.
-      @return The name of the host this socket is connected to.
-    */
-   public String getHost(){
-      return remoteHost;
-   }
-   /**
-    * Get remote host as InetAddress object, might return null if 
-    * addresses are resolved by proxy, and it is not possible to resolve
-    * it locally
-      @return Ip address of the host this socket is connected to, or null
-      if address was returned by the proxy as DOMAINNAME and can't be
-      resolved locally.
-    */
-   public InetAddress getInetAddress(){
-      if(remoteIP == null){
-	 try{
-	   remoteIP = InetAddress.getByName(remoteHost);
-	 }catch(UnknownHostException e){
-	   return null;
-	 }
-      }
-      return remoteIP;
-   }
-
-   /**
-    * Get the port assigned by the proxy for the socket, not
-    * the port on locall machine as in Socket. 
-      @return Port of the socket used on the proxy server.
-    */
-   public int getLocalPort(){
-      return localPort;
-   }
-
-   /**
-    * Get address assigned by proxy to make a remote connection,
-    * it might be different from the host specified for the proxy.
-    * Can return null if socks server returned this address as hostname
-    * and it can't be resolved locally, use getLocalHost() then.
-      @return Address proxy is using to make a connection.
-    */
-   public InetAddress getLocalAddress(){
-      if(localIP == null){
-	 try{
-	    localIP = InetAddress.getByName(localHost);
-	 }catch(UnknownHostException e){
-	   return null;
-	 }
-      }
-      return localIP;
-   }
-   /**
-      Get name of the host, proxy has assigned to make a remote connection
-      for this socket. This method is usefull when proxy have returned
-      address as hostname, and we can't resolve it on this machine.
-      @return The name of the host proxy is using to make a connection.
-   */
-   public String getLocalHost(){
-      return localHost;
-   }
-
-   /**
-     Same as socket.
-   */
-   public void setSoLinger(boolean on,int val) throws SocketException{
-      proxy.proxySocket.setSoLinger(on,val);
-   }
-   /**
-     Same as socket.
-   */
-   public int getSoLinger(int timeout) throws SocketException{
-      return proxy.proxySocket.getSoLinger();
-   }
-   /**
-     Same as socket.
-   */
-   public void setSoTimeout(int timeout) throws SocketException{
-      proxy.proxySocket.setSoTimeout(timeout);
-   }
-   /**
-     Same as socket.
-   */
-   public int getSoTimeout(int timeout) throws SocketException{
-      return proxy.proxySocket.getSoTimeout();
-   }
-   /**
-     Same as socket.
-   */
-   public void setTcpNoDelay(boolean on) throws SocketException{
-     proxy.proxySocket.setTcpNoDelay(on);
-   }
-   /**
-     Same as socket.
-   */
-   public boolean getTcpNoDelay() throws SocketException{
-     return proxy.proxySocket.getTcpNoDelay();
-   }
-
-   /**
-     Get string representation of the socket.
-   */
-   public String toString(){
-      if(directSock!=null) return "Direct connection:"+directSock;
-      return ("Proxy:"+proxy+";"+"addr:"+remoteHost+",port:"+remotePort
-                                +",localport:"+localPort);
-
-   }
-
-//Private Methods
-//////////////////
-
-   private void doDirect()throws SocksException{
-      try{
-         //System.out.println("IP:"+remoteIP+":"+remotePort);
-         directSock = new Socket(remoteIP,remotePort);
-         proxy.out = directSock.getOutputStream();
-         proxy.in  = directSock.getInputStream();
-         proxy.proxySocket = directSock;
-         localIP = directSock.getLocalAddress();
-         localPort = directSock.getLocalPort();
-      }catch(IOException io_ex){
-         throw new SocksException(Proxy.SOCKS_DIRECT_FAILED,
-                                  "Direct connect failed:"+io_ex);
-      }
-   }
-
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/UDPEncapsulation.java b/app/src/main/java/net/sourceforge/jsocks/UDPEncapsulation.java
deleted file mode 100644
index e965942..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/UDPEncapsulation.java
+++ /dev/null
@@ -1,29 +0,0 @@
-package net.sourceforge.jsocks;
-/**
- This interface provides for datagram encapsulation for SOCKSv5 protocol.
- <p>
- SOCKSv5 allows for datagrams to be encapsulated for purposes of integrity
- and/or authenticity. How it should be done is aggreed during the 
- authentication stage, and is authentication dependent. This interface is
- provided to allow this encapsulation.
- @see Authentication
-*/
-public interface UDPEncapsulation{
-
-    /**
-    This method should provide any authentication depended transformation
-    on datagrams being send from/to the client.
-
-    @param data Datagram data (including any SOCKS related bytes), to be
-                encapsulated/decapsulated.
-    @param out  Wether the data is being send out. If true method should 
-                encapsulate/encrypt data, otherwise it should decapsulate/
-                decrypt data.
-    @throw IOException if for some reason data can be transformed correctly.
-    @return Should return byte array containing data after transformation.
-            It is possible to return same array as input, if transformation
-            only involves bit mangling, and no additional data is being
-            added or removed.
-    */
-    byte[] udpEncapsulate(byte[] data, boolean out) throws java.io.IOException;
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/UDPRelayServer.java b/app/src/main/java/net/sourceforge/jsocks/UDPRelayServer.java
deleted file mode 100644
index dfa6016..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/UDPRelayServer.java
+++ /dev/null
@@ -1,212 +0,0 @@
-package net.sourceforge.jsocks;
-import net.sourceforge.jsocks.server.*;
-import java.net.*;
-import java.io.*;
-
-/**
- UDP Relay server, used by ProxyServer to perform udp forwarding.
-*/
-class UDPRelayServer implements Runnable{
-
-
-    DatagramSocket client_sock; 
-    DatagramSocket remote_sock;
-
-    Socket controlConnection;
-
-    int relayPort;
-    InetAddress relayIP;
-
-    Thread pipe_thread1,pipe_thread2;
-    Thread master_thread;
-
-    ServerAuthenticator auth;
-
-    long lastReadTime;
-
-    static PrintStream log = null;
-    static Proxy proxy = null;
-    static int datagramSize = 0xFFFF;//64K, a bit more than max udp size
-    static int iddleTimeout = 180000;//3 minutes
-
-
-    /**
-      Constructs UDP relay server to communicate with client
-      on given ip and port.
-      @param clientIP Address of the client from whom datagrams
-      will be recieved and to whom they will be forwarded.
-      @param clientPort Clients port.
-      @param master_thread Thread which will be interrupted, when
-      UDP relay server stoppes for some reason.
-      @param controlConnection Socket which will be closed, before
-      interrupting the master thread, it is introduced due to a bug
-      in windows JVM which does not throw InterruptedIOException in
-      threads which block in I/O operation.
-    */
-    public UDPRelayServer(InetAddress clientIP,int clientPort,
-                          Thread master_thread,
-                          Socket controlConnection,
-                          ServerAuthenticator auth)
-                          throws IOException{
-       this.master_thread = master_thread;
-       this.controlConnection = controlConnection;
-       this.auth = auth;
-
-       client_sock = new Socks5DatagramSocket(true,auth.getUdpEncapsulation(),
-                                              clientIP,clientPort);
-       relayPort = client_sock.getLocalPort();
-       relayIP   = client_sock.getLocalAddress();
-
-       if(relayIP.getHostAddress().equals("0.0.0.0"))
-         relayIP   = InetAddress.getLocalHost();
-
-       if(proxy == null)
-          remote_sock = new DatagramSocket();
-       else
-          remote_sock = new Socks5DatagramSocket(proxy,0,null);
-    }
-
-
-//Public methods
-/////////////////
-
-
-   /**
-    Sets the timeout for UDPRelay server.<br>
-    Zero timeout implies infinity.<br>
-    Default timeout is 3 minutes.
-    */
-
-    static public void setTimeout(int timeout){
-      iddleTimeout = timeout;
-    }
-
-
-   /**
-     Sets the size of the datagrams used in the UDPRelayServer.<br>
-     Default size is 64K, a bit more than maximum possible size of the
-     datagram.
-    */
-    static public void setDatagramSize(int size){
-      datagramSize = size;
-    }
-
-    /**
-      Port to which client should send datagram for association.
-    */
-    public int getRelayPort(){
-       return relayPort;
-    }
-    /**
-     IP address to which client should send datagrams for association.
-    */
-    public InetAddress getRelayIP(){
-       return relayIP;
-    }
-
-    /**
-      Starts udp relay server.
-      Spawns two threads of execution and returns.
-    */
-    public void start() throws IOException{
-       remote_sock.setSoTimeout(iddleTimeout);
-       client_sock.setSoTimeout(iddleTimeout);
-
-       log("Starting UDP relay server on "+relayIP+":"+relayPort);
-       log("Remote socket "+remote_sock.getLocalAddress()+":"+
-                            remote_sock.getLocalPort());
-
-       pipe_thread1 = new Thread(this,"pipe1");
-       pipe_thread2 = new Thread(this,"pipe2");
-
-       lastReadTime = System.currentTimeMillis();
-
-       pipe_thread1.start();
-       pipe_thread2.start();
-    }
-
-    /**
-     Stops Relay server.
-     <p>
-     Does not close control connection, does not interrupt master_thread.
-    */
-    public synchronized void stop(){
-       master_thread = null;
-       controlConnection = null;
-       abort();
-    }
-
-//Runnable interface
-////////////////////
-    public void run(){
-       try{
-          if(Thread.currentThread().getName().equals("pipe1"))
-             pipe(remote_sock,client_sock,false);
-          else
-             pipe(client_sock,remote_sock,true);
-       }catch(IOException ioe){
-       }finally{
-          abort();
-          log("UDP Pipe thread "+Thread.currentThread().getName()+" stopped.");
-       }
-
-    }
-
-//Private methods
-/////////////////
-    private synchronized void abort(){
-       if(pipe_thread1 == null) return;
-
-       log("Aborting UDP Relay Server");
-
-       remote_sock.close();
-       client_sock.close();
-
-       if(controlConnection != null) 
-          try{ controlConnection.close();} catch(IOException ioe){}
-
-       if(master_thread!=null) master_thread.interrupt();
-
-       pipe_thread1.interrupt();
-       pipe_thread2.interrupt();
-
-       pipe_thread1 = null;
-    }
-
-
-    static private void log(String s){
-      if(log != null){
-        log.println(s);
-        log.flush();
-      }
-    }
-
-    private void pipe(DatagramSocket from,DatagramSocket to,boolean out)
-                             throws IOException{
-       byte[] data = new byte[datagramSize];
-       DatagramPacket dp = new DatagramPacket(data,data.length);
-
-       while(true){
-          try{
-            from.receive(dp);
-            lastReadTime = System.currentTimeMillis();
-
-            if(auth.checkRequest(dp,out))
-               to.send(dp);
-
-          }catch(UnknownHostException uhe){
-            log("Dropping datagram for unknown host");
-          }catch(InterruptedIOException iioe){
-            //log("Interrupted: "+iioe);
-            //If we were interrupted by other thread.
-            if(iddleTimeout == 0) return;
-
-            //If last datagram was received, long time ago, return.
-            long timeSinceRead = System.currentTimeMillis() - lastReadTime;
-            if(timeSinceRead >= iddleTimeout -100) //-100 for adjustment
-               return;
-          }
-          dp.setLength(data.length);
-       }
-    }
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticator.java b/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticator.java
deleted file mode 100644
index cb7f0af..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticator.java
+++ /dev/null
@@ -1,120 +0,0 @@
-package net.sourceforge.jsocks.server;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.DatagramPacket;
-import java.net.Socket;
-
-import net.sourceforge.jsocks.ProxyMessage;
-import net.sourceforge.jsocks.UDPEncapsulation;
-
-/**
- Classes implementing this interface should provide socks server with
- authentication and authorization of users.
-**/
-public interface ServerAuthenticator{
-
-   /**
-     This method is called when a new connection accepted by the server.
-     <p>
-     At this point no data have been extracted from the connection. It is
-     responsibility of this method to ensure that the next byte in the
-     stream after this method have been called is the first byte of the
-     socks request message. For SOCKSv4 there is no authentication data and
-     the first byte in the stream is part of the request. With SOCKSv5 however
-     there is an authentication data first. It is expected that implementaions
-     will process this authentication data. 
-     <p>
-     If authentication was successful an instance of ServerAuthentication
-     should be returned, it later will be used by the server to perform
-     authorization and some other things. If authentication fails null should
-     be returned, or an exception may be thrown.
-
-     @param s Accepted Socket.
-     @return An instance of ServerAuthenticator to be used for this connection
-     or null
-   */
-   ServerAuthenticator startSession(Socket s) throws IOException;
-
-   /**
-    This method should return input stream which should be used on the
-    accepted socket.
-    <p>
-    SOCKSv5 allows to have multiple authentication methods, and these methods
-    might require some kind of transformations being made on the data.
-    <p>
-    This method is called on the object returned from the startSession
-    function.
-   */
-   InputStream getInputStream();
-   /**
-    This method should return output stream to use to write to the accepted
-    socket.
-    <p>
-    SOCKSv5 allows to have multiple authentication methods, and these methods
-    might require some kind of transformations being made on the data.
-    <p>
-    This method is called on the object returned from the startSession
-    function.
-   */
-   OutputStream getOutputStream();
-
-   /**
-    This method should return UDPEncapsulation, which should be used
-    on the datagrams being send in/out.
-    <p>
-    If no transformation should be done on the datagrams, this method
-    should return null.
-    <p>
-    This method is called on the object returned from the startSession
-    function.
-   */
-
-   UDPEncapsulation getUdpEncapsulation();
-
-   /**
-    This method is called when a request have been read.
-    <p>
-    Implementation should decide wether to grant request or not. Returning
-    true implies granting the request, false means request should be rejected.
-    <p>
-    This method is called on the object returned from the startSession
-    function.
-    @param msg Request message.
-    @return true to grant request, false to reject it.
-   */
-   boolean checkRequest(ProxyMessage msg);
-
-   /**
-    This method is called when datagram is received by the server.
-    <p>
-    Implementaions should decide wether it should be forwarded or dropped.
-    It is expecteed that implementation will use datagram address and port
-    information to make a decision, as well as anything else. Address and
-    port of the datagram are always correspond to remote machine. It is
-    either destination or source address. If out is true address is destination
-    address, else it is a source address, address of the machine from which
-    datagram have been received for the client.
-    <p>
-    Implementaions should return true if the datagram is to be forwarded, and
-    false if the datagram should be dropped.
-    <p>
-    This method is called on the object returned from the startSession
-    function.
-
-    @param out If true the datagram is being send out(from the client),
-               otherwise it is an incoming datagram.
-    @return True to forward datagram false drop it silently.
-   */
-   boolean checkRequest(DatagramPacket dp, boolean out);
-
-   /**
-    This method is called when session is completed. Either due to normal
-    termination or due to any error condition.
-    <p>
-    This method is called on the object returned from the startSession
-    function.
-   */
-   void endSession();
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticatorNone.java b/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticatorNone.java
deleted file mode 100644
index e4edbe7..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticatorNone.java
+++ /dev/null
@@ -1,169 +0,0 @@
-package net.sourceforge.jsocks.server;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.PushbackInputStream;
-import java.net.Socket;
-
-import net.sourceforge.jsocks.ProxyMessage;
-import net.sourceforge.jsocks.UDPEncapsulation;
-
-/**
- An implementation of ServerAuthenticator, which does <b>not</b> do
- any authentication.
-<P>
-<FONT size="+3" color ="FF0000"> Warning!!</font><br> Should not be
-used on machines which are not behind the firewall.
-<p>
-It is only provided to make implementing other authentication schemes
-easier.<br>
-For Example: <tt><pre>
-   class MyAuth extends socks.server.ServerAuthenticator{
-    ...
-    public ServerAuthenticator startSession(java.net.Socket s){
-      if(!checkHost(s.getInetAddress()) return null;
-      return super.startSession(s);
-    }
-
-    boolean checkHost(java.net.Inetaddress addr){
-      boolean allow;
-      //Do it somehow
-      return allow;
-    }
-   }
-</pre></tt>
-*/
-public class ServerAuthenticatorNone implements ServerAuthenticator{
-
-   static final byte[] socks5response = {5,0};
-
-   InputStream in;
-   OutputStream out;
-
-   /**
-    Creates new instance of the ServerAuthenticatorNone.
-   */
-   public ServerAuthenticatorNone(){
-     this.in = null;
-     this.out = null;
-   }
-   /**
-    Constructs new ServerAuthenticatorNone object suitable for returning
-    from the startSession function.
-    @param in Input stream to return from getInputStream method.
-    @param out Output stream to return from getOutputStream method.
-   */
-   public ServerAuthenticatorNone(InputStream in, OutputStream out){
-      this.in = in;
-      this.out = out;
-   }
-   /**
-    Grants access to everyone.Removes authentication related bytes from
-    the stream, when a SOCKS5 connection is being made, selects an
-    authentication NONE.
-    */
-   public ServerAuthenticator startSession(Socket s)
-                                  throws IOException{
-
-     PushbackInputStream in =  new PushbackInputStream(s.getInputStream());
-     OutputStream out = s.getOutputStream();
-
-     int version = in.read();
-     if(version == 5){
-       if(!selectSocks5Authentication(in,out,0))
-          return null;
-     }else if(version == 4){
-       //Else it is the request message allready, version 4
-       in.unread(version);
-     }else
-       return null;
-     
-
-     return new ServerAuthenticatorNone(in,out);
-   }
-
-   /**
-     Get input stream.
-     @return Input stream speciefied in the constructor.
-   */
-   public InputStream getInputStream(){
-      return in;
-   }
-   /**
-     Get output stream.
-     @return Output stream speciefied in the constructor.
-   */
-   public OutputStream getOutputStream(){
-      return out;
-   }
-   /**
-     Allways returns null.
-     @return null
-   */
-   public UDPEncapsulation getUdpEncapsulation(){
-      return null;
-   }
-
-   /**
-    Allways returns true.
-   */
-   public boolean checkRequest(ProxyMessage msg){
-     return true;
-   }
-
-   /**
-    Allways returns true.
-   */
-   public boolean checkRequest(java.net.DatagramPacket dp, boolean out){
-     return true;
-   }
-
-   /**
-    Does nothing.
-    */
-   public void endSession(){
-   }
-
-   /**
-     Convinience routine for selecting SOCKSv5 authentication.
-     <p>
-     This method reads in authentication methods that client supports,
-     checks wether it supports given method. If it does, the notification
-     method is written back to client, that this method have been chosen
-     for authentication. If given method was not found, authentication
-     failure message is send to client ([5,FF]).
-     @param in Input stream, version byte should be removed from the stream
-               before calling this method.
-     @param out Output stream.
-     @param methodId Method which should be selected.
-     @return true if methodId was found, false otherwise.
-   */
-   static public boolean selectSocks5Authentication(InputStream in, 
-                                                    OutputStream out,
-                                                    int methodId)
-                                                    throws IOException{
-                                                    
-      int num_methods = in.read();
-      if (num_methods <= 0) return false;
-      byte method_ids[] = new byte[num_methods];
-      byte response[] = new byte[2];
-      boolean found = false;
-
-      response[0] = (byte) 5;    //SOCKS version
-      response[1] = (byte) 0xFF; //Not found, we are pessimistic
-
-      int bread = 0; //bytes read so far
-      while(bread < num_methods)
-         bread += in.read(method_ids,bread,num_methods-bread);
-
-      for(int i=0;i<num_methods;++i)
-         if(method_ids[i] == methodId){
-           found = true;
-           response[1] = (byte) methodId;
-           break;
-         }
-
-      out.write(response);
-      return found;
-   }
-}