基于Java的实例源码-Blowfish对称密钥加密算法类和实例.zip

// Download:http://www.codefans.net // Source File Name: Blowfish.java import java.security.MessageDigest; import java.util.Random; public class Blowfish { private static class BlowfishCBC extends BlowfishECB { public long getCBCIV() { return m_lCBCIV; } public void getCBCIV(byte dest[]) { Blowfish.longToByteArray(m_lCBCIV, dest, 0); } public void setCBCIV(long lNewCBCIV) { m_lCBCIV = lNewCBCIV; } public void setCBCIV(byte newCBCIV[]) { m_lCBCIV = Blowfish.byteArrayToLong(newCBCIV, 0); } public void cleanUp() { m_lCBCIV = 0L; super.cleanUp(); } private long encryptBlockCBC(long lPlainblock) { lPlainblock ^= m_lCBCIV; lPlainblock = super.encryptBlock(lPlainblock); return m_lCBCIV = lPlainblock; } private long decryptBlockCBC(long lCipherblock) { long lTemp = lCipherblock; lCipherblock = super.decryptBlock(lCipherblock); lCipherblock ^= m_lCBCIV; m_lCBCIV = lTemp; return lCipherblock; } public void encrypt(byte inbuffer[], byte outbuffer[]) { int nLen = inbuffer.length; for(int nI = 0; nI < nLen; nI += 8) { long lTemp = Blowfish.byteArrayToLong(inbuffer, nI); lTemp = encryptBlockCBC(lTemp); Blowfish.longToByteArray(lTemp, outbuffer, nI); } } public void encrypt(byte buffer[]) { int nLen = buffer.length; for(int nI = 0; nI < nLen; nI += 8) { long lTemp = Blowfish.byteArrayToLong(buffer, nI); lTemp = encryptBlockCBC(lTemp); Blowfish.longToByteArray(lTemp, buffer, nI); } } public void encrypt(int inbuffer[], int outbuffer[]) { int nLen = inbuffer.length; for(int nI = 0; nI < nLen; nI += 2) { long lTemp = Blowfish.intArrayToLong(inbuffer, nI); lTemp = encryptBlockCBC(lTemp); Blowfish.longToIntArray(lTemp, outbuffer, nI); } } public void encrypt(int buffer[]) { int nLen = buffer.length; for(int nI = 0; nI < nLen; nI += 2) { long lTemp = Blowfish.intArrayToLong(buffer, nI); lTemp = encryptBlockCBC(lTemp); Blowfish.longToIntArray(lTemp, buffer, nI); } } public void encrypt(long inbuffer[], long outbuffer[]) { int nLen = inbuffer.length; for(int nI = 0; nI < nLen; nI++) outbuffer[nI] = encryptBlockCBC(inbuffer[nI]); } public void encrypt(long buffer[]) { int nLen = buffer.length; for(int nI = 0; nI < nLen; nI++) buffer[nI] = encryptBlockCBC(buffer[nI]); } public void decrypt(byte inbuffer[], byte outbuffer[]) { int nLen = inbuffer.length; for(int nI = 0; nI < nLen; nI += 8) { long lTemp = Blowfish.byteArrayToLong(inbuffer, nI); lTemp = decryptBlockCBC(lTemp); Blowfish.longToByteArray(lTemp, outbuffer, nI); } } public void decrypt(byte buffer[]) { int nLen = buffer.length; for(int nI = 0; nI < nLen; nI += 8) { long lTemp = Blowfish.byteArrayToLong(buffer, nI); lTemp = decryptBlockCBC(lTemp); Blowfish.longToByteArray(lTemp, buffer, nI); } } public void decrypt(int inbuffer[], int outbuffer[]) { int nLen = inbuffer.length; for(int nI = 0; nI < nLen; nI += 2) { long lTemp = Blowfish.intArrayToLong(inbuffer, nI); lTemp = decryptBlockCBC(lTemp); Blowfish.longToIntArray(lTemp, outbuffer, nI); } } public void decrypt(int buffer[]) { int nLen = buffer.length; for(int nI = 0; nI < nLen; nI += 2) { long lTemp = Blowfish.intArrayToLong(buffer, nI); lTemp = decryptBlockCBC(lTemp); Blowfish.longToIntArray(lTemp, buffer, nI); } } public void decrypt(long inbuffer[], long outbuffer[]) { int nLen = inbuffer.length; for(int nI = 0; nI < nLen; nI++) outbuffer[nI] = decryptBlockCBC(inbuffer[nI]); } public void decrypt(long buffer[]) { int nLen = buffer.length; for(int nI = 0; nI < nLen; nI++) buffer[nI] = decryptBlockCBC(buffer[nI]); } long m_lCBCIV; public BlowfishCBC(byte bfkey[]) { super(bfkey); setCBCIV(0L); } public BlowfishCBC(byte bfkey[], long lInitCBCIV) { super(bfkey); setCBCIV(lInitCBCIV); } public BlowfishCBC(byte bfkey[], byte initCBCIV[]) { super(bfkey); setCBCIV(initCBCIV); } } private static class BlowfishECB { public void cleanUp() { for(int nI = 0; nI < 18; nI++) m_pbox[nI] = 0; for(int nI = 0; nI < 256; nI++) m_sbox1[nI] = m_sbox2[nI] = m_sbox3[nI] = m_sbox4[nI] = 0; } public static boolean selfTest() { byte testKey1[] = { 28, 88, 127, 28, 19, -110, 79, -17 }; int tv_p1[] = { 0x30553228, 0x6d6f295a }; int tv_c1[] = { 0x55cb3774, 0xd13ef201 }; int tv_t1[] = new int[2]; String sTestKey2 = "Who is John Galt?"; byte testKey2[] = sTestKey2.getBytes(); int tv_p2[] = { 0xfedcba98, 0x76543210 }; int tv_c2[] = { 0xcc91732b, 0x8022f684 }; int tv_t2[] = new int[2]; BlowfishECB testbf1 = new BlowfishECB(testKey1); testbf1.encrypt(tv_p1, tv_t1); if(tv_t1[0] != tv_c1[0] || tv_t1[1] != tv_c1[1]) return false; testbf1.decrypt(tv_t1); if(tv_t1[0] != tv_p1[0] || tv_t1[1] != tv_p1[1]) return false; BlowfishECB testbf2 = new BlowfishECB(testKey2); testbf2.encrypt(tv_p2, tv_t2); if(tv_t2[0] != tv_c2[0] || tv_t2[1] != tv_c2[1]) return false; testbf2.decrypt(tv_t2); return tv_t2[0] == tv_p2[0] && tv_t2[1] == tv_p2[1]; } protected long encryptBlock(long lPlainBlock) { int nHi = Blowfish.longHi32(lPlainBlock); int nLo = Blowfish.longLo32(lPlainBlock); int sbox1[] = m_sbox1; int sbox2[] = m_sbox2; int sbox3[] = m_sbox3; int sbox4[] = m_sbox4; int pbox[] = m_pbox; nHi ^= pbox[0]; nLo ^= (sbox1[nHi >>> 24] + sbox2[nHi >>> 16 & 0xff] ^ sbox3[nHi >>> 8 & 0xff]) + sbox4[nHi & 0xff] ^ pbox[1]; nHi ^= (sbox1[nLo >>> 24] + sbox2[nLo >>> 16 & 0xff] ^ sbox3[nLo >>> 8 & 0xff]) + sbox4[nLo & 0xff] ^ pbox[2]; nLo ^= (sbox1[nHi >>> 24] + sbox2[nHi >>>