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      1 /*
      2  * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
      3  * Please refer to the LICENSE.txt for licensing details.
      4  */
      5 package ch.ethz.ssh2.crypto.cipher;
      6 
      7 /**
      8  * NullCipher.
      9  *
     10  * @author Christian Plattner
     11  * @version 2.50, 03/15/10
     12  */
     13 public class NullCipher implements BlockCipher
     14 {
     15 	private int blockSize = 8;
     16 
     17 	public NullCipher()
     18 	{
     19 	}
     20 
     21 	public NullCipher(int blockSize)
     22 	{
     23 		this.blockSize = blockSize;
     24 	}
     25 
     26 	public void init(boolean forEncryption, byte[] key)
     27 	{
     28 	}
     29 
     30 	public int getBlockSize()
     31 	{
     32 		return blockSize;
     33 	}
     34 
     35 	public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff)
     36 	{
     37 		System.arraycopy(src, srcoff, dst, dstoff, blockSize);
     38 	}
     39 }
     40