1 files changed, 84 insertions, 0 deletions
diff --git a/java/com/jcraft/jsch/jce/TripleDESCTR.java b/java/com/jcraft/jsch/jce/TripleDESCTR.java
new file mode 100644
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--- /dev/null
+++ b/java/com/jcraft/jsch/jce/TripleDESCTR.java
@@ -0,0 +1,84 @@
+/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
+/*
+Copyright (c) 2008-2012 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.
+*/
+
+package com.jcraft.jsch.jce;
+
+import com.jcraft.jsch.Cipher;
+import javax.crypto.*;
+import javax.crypto.spec.*;
+
+public class TripleDESCTR implements Cipher{
+  private static final int ivsize=8;
+  private static final int bsize=24;
+  private javax.crypto.Cipher cipher;    
+  public int getIVSize(){return ivsize;} 
+  public int getBlockSize(){return bsize;}
+  public void init(int mode, byte[] key, byte[] iv) throws Exception{
+    String pad="NoPadding";      
+    //if(padding) pad="PKCS5Padding";
+    byte[] tmp;
+    if(iv.length>ivsize){
+      tmp=new byte[ivsize];
+      System.arraycopy(iv, 0, tmp, 0, tmp.length);
+      iv=tmp;
+    }
+    if(key.length>bsize){
+      tmp=new byte[bsize];
+      System.arraycopy(key, 0, tmp, 0, tmp.length);
+      key=tmp;
+    }
+
+    try{
+      cipher=javax.crypto.Cipher.getInstance("DESede/CTR/"+pad);
+/*
+      // The following code does not work on IBM's JDK 1.4.1
+      SecretKeySpec skeySpec = new SecretKeySpec(key, "DESede");
+      cipher.init((mode==ENCRYPT_MODE?
+		   javax.crypto.Cipher.ENCRYPT_MODE:
+		   javax.crypto.Cipher.DECRYPT_MODE),
+		  skeySpec, new IvParameterSpec(iv));
+*/
+      DESedeKeySpec keyspec=new DESedeKeySpec(key);
+      SecretKeyFactory keyfactory=SecretKeyFactory.getInstance("DESede");
+      SecretKey _key=keyfactory.generateSecret(keyspec);
+      cipher.init((mode==ENCRYPT_MODE?
+		   javax.crypto.Cipher.ENCRYPT_MODE:
+		   javax.crypto.Cipher.DECRYPT_MODE),
+		  _key, new IvParameterSpec(iv));
+    }
+    catch(Exception e){
+      cipher=null;
+      throw e;
+    }
+  }
+  public void update(byte[] foo, int s1, int len, byte[] bar, int s2) throws Exception{
+    cipher.update(foo, s1, len, bar, s2);
+  }
+  public boolean isCBC(){return false; }
+}