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Diffstat (limited to 'lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java')
-rw-r--r--lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java284
1 files changed, 142 insertions, 142 deletions
diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java
index 9db88c2..cf0db4a 100644
--- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java
+++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/CipherOutputStream.java
@@ -1,142 +1,142 @@
-
-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);
- }
-}
+
+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);
+ }
+}