97 lines
3.2 KiB
C#
97 lines
3.2 KiB
C#
using System;
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using System.Security.Cryptography;
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namespace Tamir.SharpSsh.jsch.jce
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{
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/* -*-mode:java; c-basic-offset:2; -*- */
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/*
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Copyright (c) 2002,2003,2004 ymnk, JCraft,Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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3. The names of the authors may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
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INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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public class AES128CBC : Cipher
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{
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private int mode;
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private const int ivsize=16;
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private const int bsize=16;
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private System.Security.Cryptography.RijndaelManaged rijndael;
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private ICryptoTransform cipher;
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public override int getIVSize(){return ivsize;}
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public override int getBlockSize(){return bsize;}
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public override void init(int mode, byte[] key, byte[] iv)
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{
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this.mode=mode;
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rijndael = new RijndaelManaged();
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rijndael.Mode = CipherMode.CBC;
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rijndael.Padding = PaddingMode.None;
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//String pad="NoPadding";
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byte[] tmp;
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if(iv.Length>ivsize)
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{
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tmp=new byte[ivsize];
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Array.Copy(iv, 0, tmp, 0, tmp.Length);
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iv=tmp;
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}
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if(key.Length>bsize)
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{
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tmp=new byte[bsize];
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Array.Copy(key, 0, tmp, 0, tmp.Length);
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key=tmp;
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}
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try
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{
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// SecretKeySpec keyspec=new SecretKeySpec(key, "AES");
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// cipher=javax.crypto.Cipher.getInstance("AES/CBC/"+pad);
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// cipher.init((mode==ENCRYPT_MODE?
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// javax.crypto.Cipher.ENCRYPT_MODE:
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// javax.crypto.Cipher.DECRYPT_MODE),
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// keyspec, new IvParameterSpec(iv));
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cipher = (mode==ENCRYPT_MODE?
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rijndael.CreateEncryptor(key, iv):
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rijndael.CreateDecryptor(key, iv));
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}
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catch(Exception e)
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{
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Console.WriteLine(e);
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cipher=null;
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}
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}
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public override void update(byte[] foo, int s1, int len, byte[] bar, int s2)
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{
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//cipher.update(foo, s1, len, bar, s2);
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cipher.TransformBlock(foo, s1, len, bar, s2);
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}
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public override string ToString()
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{
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return "aes128-cbc";
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}
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}
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}
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