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| 1 | +/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */ |
| 2 | +/* |
| 3 | +Copyright (c) 2005-2018 ymnk, JCraft,Inc. All rights reserved. |
| 4 | +
|
| 5 | +Redistribution and use in source and binary forms, with or without |
| 6 | +modification, are permitted provided that the following conditions are met: |
| 7 | +
|
| 8 | + 1. Redistributions of source code must retain the above copyright notice, |
| 9 | + this list of conditions and the following disclaimer. |
| 10 | +
|
| 11 | + 2. Redistributions in binary form must reproduce the above copyright |
| 12 | + notice, this list of conditions and the following disclaimer in |
| 13 | + the documentation and/or other materials provided with the distribution. |
| 14 | +
|
| 15 | + 3. The names of the authors may not be used to endorse or promote products |
| 16 | + derived from this software without specific prior written permission. |
| 17 | +
|
| 18 | +THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, |
| 19 | +INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 20 | +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT, |
| 21 | +INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 23 | +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, |
| 24 | +OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 25 | +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 26 | +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| 27 | +EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | +*/ |
| 29 | + |
| 30 | +package com.jcraft.jsch.bc; |
| 31 | + |
| 32 | +import com.jcraft.jsch.Cipher; |
| 33 | +import org.bouncycastle.crypto.BufferedBlockCipher; |
| 34 | +import org.bouncycastle.crypto.engines.CAST5Engine; |
| 35 | +import org.bouncycastle.crypto.modes.CBCBlockCipher; |
| 36 | +import org.bouncycastle.crypto.params.*; |
| 37 | + |
| 38 | +public class CAST128CBC implements Cipher{ |
| 39 | + private static final int ivsize=8; |
| 40 | + private static final int bsize=16; |
| 41 | + private BufferedBlockCipher cipher; |
| 42 | + @Override |
| 43 | + public int getIVSize(){return ivsize;} |
| 44 | + @Override |
| 45 | + public int getBlockSize(){return bsize;} |
| 46 | + @Override |
| 47 | + public int getTagSize(){return 0;} |
| 48 | + @Override |
| 49 | + public void init(int mode, byte[] key, byte[] iv) throws Exception{ |
| 50 | + byte[] tmp; |
| 51 | + if(iv.length>ivsize){ |
| 52 | + tmp=new byte[ivsize]; |
| 53 | + System.arraycopy(iv, 0, tmp, 0, tmp.length); |
| 54 | + iv=tmp; |
| 55 | + } |
| 56 | + if(key.length>bsize){ |
| 57 | + tmp=new byte[bsize]; |
| 58 | + System.arraycopy(key, 0, tmp, 0, tmp.length); |
| 59 | + key=tmp; |
| 60 | + } |
| 61 | + |
| 62 | + try{ |
| 63 | + ParametersWithIV keyspec=new ParametersWithIV(new KeyParameter(key, 0, key.length), iv, 0, iv.length); |
| 64 | + cipher=new BufferedBlockCipher(new CBCBlockCipher(new CAST5Engine())); |
| 65 | + cipher.init(mode==ENCRYPT_MODE, keyspec); |
| 66 | + } |
| 67 | + catch(Exception e){ |
| 68 | + cipher=null; |
| 69 | + throw e; |
| 70 | + } |
| 71 | + } |
| 72 | + @Override |
| 73 | + public void update(int foo) throws Exception{ |
| 74 | + } |
| 75 | + @Override |
| 76 | + public void update(byte[] foo, int s1, int len, byte[] bar, int s2) throws Exception{ |
| 77 | + cipher.processBytes(foo, s1, len, bar, s2); |
| 78 | + } |
| 79 | + @Override |
| 80 | + public void updateAAD(byte[] foo, int s1, int len) throws Exception{ |
| 81 | + } |
| 82 | + @Override |
| 83 | + public void doFinal(byte[] foo, int s1, int len, byte[] bar, int s2) throws Exception{ |
| 84 | + } |
| 85 | + @Override |
| 86 | + public boolean isCBC(){return true; } |
| 87 | + @Override |
| 88 | + public boolean isAEAD(){return false; } |
| 89 | + @Override |
| 90 | + public boolean isChaCha20(){return false; } |
| 91 | +} |
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