diff options
Diffstat (limited to 'lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java')
| -rw-r--r-- | lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java | 210 |
1 files changed, 105 insertions, 105 deletions
diff --git a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java index 6c0d797..f47a636 100644 --- a/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java +++ b/lib/src/main/java/com/trilead/ssh2/crypto/cipher/DESede.java @@ -1,105 +1,105 @@ -
-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()
- {
- }
-}
+ +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() + { + } +} |