148ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood/* 248ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood * Copyright (c) 2006-2011 Christian Plattner. All rights reserved. 348ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood * Please refer to the LICENSE.txt for licensing details. 448ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood */ 548ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwoodpackage ch.ethz.ssh2.crypto.cipher; 648ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood 748ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood/** 848ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood * NullCipher. 948ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood * 1048ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood * @author Christian Plattner 1148ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood * @version 2.50, 03/15/10 1248ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood */ 1348ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwoodpublic class NullCipher implements BlockCipher 1448ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood{ 1548ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood private int blockSize = 8; 1648ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood 1748ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood public NullCipher() 1848ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood { 1948ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood } 2048ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood 2148ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood public NullCipher(int blockSize) 2248ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood { 2348ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood this.blockSize = blockSize; 2448ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood } 2548ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood 2648ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood public void init(boolean forEncryption, byte[] key) 2748ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood { 2848ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood } 2948ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood 3048ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood public int getBlockSize() 3148ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood { 3248ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood return blockSize; 3348ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood } 3448ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood 3548ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood public void transformBlock(byte[] src, int srcoff, byte[] dst, int dstoff) 3648ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood { 3748ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood System.arraycopy(src, srcoff, dst, dstoff, blockSize); 3848ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood } 3948ded2421114c4c87ef3f8005c9f793a5d077cbdMike Lockwood} 40