一、Blowfish算法是什么呢？
Blowfish是一個64位分組及可變密鑰長度的分組密碼算法，算法由兩部分組成：密鑰擴展和數據加密。密鑰擴展把長度可達到448位的密鑰轉變成總共4168字節的幾個子密鑰。
數據加密由一個簡單函數迭代16輪，每一輪由密鑰相關的置換，密鑰相關和數據相關的代替組成。所有的運算都是32位字的加法和異或，僅有的另一個運算是每輪的四個查表。
Blowfish使用了大量的子密鑰，這些密鑰必須在加密及解密之前進行預計算。
二、Blowfish算法的計算步驟？
1.初始化P數組,然后是4個S盒用固定的串.這些串由π的十六進制組成.
2.用密鑰的第一個32位與P1異或,用密鑰的第二個32位與P2異或,依此類推,直到密鑰的所有位(直到P18).周期性地循環密鑰的所有位直到整個P數組與密鑰異或完為止.
3.利用Blowfish算法加密全零串,其密鑰為在第1和第2步中描述的子密鑰.
4.用第3步的輸出取代P1和P2.
5.利用Blowfish算法加密第3步的輸出,其密鑰為修改過的子密鑰.
6.用第5步的輸出取代P3和P4.
7.重重上述操作,直到P數組的所有元素及4個S盒全部被連續變化的Blowfish的輸出所取代.
主要代碼：
import java.security.MessageDigest;
import java.util.Random;
public class BlowfishUtil
{
private BlowfishCBC m_bfish;
private static Random m_rndGen = new Random();
private static final char HEXTAB[] = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f'
};
private static class BlowfishCBC extends BlowfishECB
{
public long getCBCIV()
{
return m_lCBCIV;
}
public void getCBCIV(byte dest[])
{
BlowfishUtil.longToByteArray(m_lCBCIV, dest, 0);
}
public void setCBCIV(long lNewCBCIV)
{
m_lCBCIV = lNewCBCIV;
}
public void setCBCIV(byte newCBCIV[])
{
m_lCBCIV = BlowfishUtil.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 = BlowfishUtil.byteArrayToLong(inbuffer, nI);
lTemp = encryptBlockCBC(lTemp);
BlowfishUtil.longToByteArray(lTemp, outbuffer, nI);
}
}
public void encrypt(byte buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI += 8)
{
long lTemp = BlowfishUtil.byteArrayToLong(buffer, nI);
lTemp = encryptBlockCBC(lTemp);
BlowfishUtil.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 = BlowfishUtil.intArrayToLong(inbuffer, nI);
lTemp = encryptBlockCBC(lTemp);
BlowfishUtil.longToIntArray(lTemp, outbuffer, nI);
}
}
public void encrypt(int buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI += 2)
{
long lTemp = BlowfishUtil.intArrayToLong(buffer, nI);
lTemp = encryptBlockCBC(lTemp);
BlowfishUtil.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 = BlowfishUtil.byteArrayToLong(inbuffer, nI);
lTemp = decryptBlockCBC(lTemp);
BlowfishUtil.longToByteArray(lTemp, outbuffer, nI);
}
}
public void decrypt(byte buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI += 8)
{
long lTemp = BlowfishUtil.byteArrayToLong(buffer, nI);
lTemp = decryptBlockCBC(lTemp);
BlowfishUtil.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 = BlowfishUtil.intArrayToLong(inbuffer, nI);
lTemp = decryptBlockCBC(lTemp);
BlowfishUtil.longToIntArray(lTemp, outbuffer, nI);
}
}
public void decrypt(int buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI += 2)
{
long lTemp = BlowfishUtil.intArrayToLong(buffer, nI);
lTemp = decryptBlockCBC(lTemp);
BlowfishUtil.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;
}
protected long encryptBlock(long lPlainBlock)
{
int nHi = BlowfishUtil.longHi32(lPlainBlock);
int nLo = BlowfishUtil.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 >>> 16 & 0xff] ^ sbox3[nHi >>> 8 & 0xff]) + sbox4[nHi & 0xff] ^ pbox[3];
nHi ^= (sbox1[nLo >>> 24] + sbox2[nLo >>> 16 & 0xff] ^ sbox3[nLo >>> 8 & 0xff]) + sbox4[nLo & 0xff] ^ pbox[4];
nLo ^= (sbox1[nHi >>> 24] + sbox2[nHi >>> 16 & 0xff] ^ sbox3[nHi >>> 8 & 0xff]) + sbox4[nHi & 0xff] ^ pbox[5];
nHi ^= (sbox1[nLo >>> 24] + sbox2[nLo >>> 16 & 0xff] ^ sbox3[nLo >>> 8 & 0xff]) + sbox4[nLo & 0xff] ^ pbox[6];
nLo ^= (sbox1[nHi >>> 24] + sbox2[nHi >>> 16 & 0xff] ^ sbox3[nHi >>> 8 & 0xff]) + sbox4[nHi & 0xff] ^ pbox[7];
nHi ^= (sbox1[nLo >>> 24] + sbox2[nLo >>> 16 & 0xff] ^ sbox3[nLo >>> 8 & 0xff]) + sbox4[nLo & 0xff] ^ pbox[8];
nLo ^= (sbox1[nHi >>> 24] + sbox2[nHi >>> 16 & 0xff] ^ sbox3[nHi >>> 8 & 0xff]) + sbox4[nHi & 0xff] ^ pbox[9];
nHi ^= (sbox1[nLo >>> 24] + sbox2[nLo >>> 16 & 0xff] ^ sbox3[nLo >>> 8 & 0xff]) + sbox4[nLo & 0xff] ^ pbox[10];
nLo ^= (sbox1[nHi >>> 24] + sbox2[nHi >>> 16 & 0xff] ^ sbox3[nHi >>> 8 & 0xff]) + sbox4[nHi & 0xff] ^ pbox[11];
nHi ^= (sbox1[nLo >>> 24] + sbox2[nLo >>> 16 & 0xff] ^ sbox3[nLo >>> 8 & 0xff]) + sbox4[nLo & 0xff] ^ pbox[12];
nLo ^= (sbox1[nHi >>> 24] + sbox2[nHi >>> 16 & 0xff] ^ sbox3[nHi >>> 8 & 0xff]) + sbox4[nHi & 0xff] ^ pbox[13];
nHi ^= (sbox1[nLo >>> 24] + sbox2[nLo >>> 16 & 0xff] ^ sbox3[nLo >>> 8 & 0xff]) + sbox4[nLo & 0xff] ^ pbox[14];
nLo ^= (sbox1[nHi >>> 24] + sbox2[nHi >>> 16 & 0xff] ^ sbox3[nHi >>> 8 & 0xff]) + sbox4[nHi & 0xff] ^ pbox[15];
nHi ^= (sbox1[nLo >>> 24] + sbox2[nLo >>> 16 & 0xff] ^ sbox3[nLo >>> 8 & 0xff]) + sbox4[nLo & 0xff] ^ pbox[16];
return BlowfishUtil.makeLong(nHi, nLo ^ pbox[17]);
}
protected long decryptBlock(long lCipherBlock)
{
int nHi = BlowfishUtil.longHi32(lCipherBlock);
int nLo = BlowfishUtil.longLo32(lCipherBlock);
nHi ^= m_pbox[17];
nLo ^= (m_sbox1[nHi >>> 24] + m_sbox2[nHi >>> 16 & 0xff] ^ m_sbox3[nHi >>> 8 & 0xff]) + m_sbox4[nHi & 0xff] ^ m_pbox[16];
nHi ^= (m_sbox1[nLo >>> 24] + m_sbox2[nLo >>> 16 & 0xff] ^ m_sbox3[nLo >>> 8 & 0xff]) + m_sbox4[nLo & 0xff] ^ m_pbox[15];
nLo ^= (m_sbox1[nHi >>> 24] + m_sbox2[nHi >>> 16 & 0xff] ^ m_sbox3[nHi >>> 8 & 0xff]) + m_sbox4[nHi & 0xff] ^ m_pbox[14];
nHi ^= (m_sbox1[nLo >>> 24] + m_sbox2[nLo >>> 16 & 0xff] ^ m_sbox3[nLo >>> 8 & 0xff]) + m_sbox4[nLo & 0xff] ^ m_pbox[13];
nLo ^= (m_sbox1[nHi >>> 24] + m_sbox2[nHi >>> 16 & 0xff] ^ m_sbox3[nHi >>> 8 & 0xff]) + m_sbox4[nHi & 0xff] ^ m_pbox[12];
nHi ^= (m_sbox1[nLo >>> 24] + m_sbox2[nLo >>> 16 & 0xff] ^ m_sbox3[nLo >>> 8 & 0xff]) + m_sbox4[nLo & 0xff] ^ m_pbox[11];
nLo ^= (m_sbox1[nHi >>> 24] + m_sbox2[nHi >>> 16 & 0xff] ^ m_sbox3[nHi >>> 8 & 0xff]) + m_sbox4[nHi & 0xff] ^ m_pbox[10];
nHi ^= (m_sbox1[nLo >>> 24] + m_sbox2[nLo >>> 16 & 0xff] ^ m_sbox3[nLo >>> 8 & 0xff]) + m_sbox4[nLo & 0xff] ^ m_pbox[9];
nLo ^= (m_sbox1[nHi >>> 24] + m_sbox2[nHi >>> 16 & 0xff] ^ m_sbox3[nHi >>> 8 & 0xff]) + m_sbox4[nHi & 0xff] ^ m_pbox[8];
nHi ^= (m_sbox1[nLo >>> 24] + m_sbox2[nLo >>> 16 & 0xff] ^ m_sbox3[nLo >>> 8 & 0xff]) + m_sbox4[nLo & 0xff] ^ m_pbox[7];
nLo ^= (m_sbox1[nHi >>> 24] + m_sbox2[nHi >>> 16 & 0xff] ^ m_sbox3[nHi >>> 8 & 0xff]) + m_sbox4[nHi & 0xff] ^ m_pbox[6];
nHi ^= (m_sbox1[nLo >>> 24] + m_sbox2[nLo >>> 16 & 0xff] ^ m_sbox3[nLo >>> 8 & 0xff]) + m_sbox4[nLo & 0xff] ^ m_pbox[5];
nLo ^= (m_sbox1[nHi >>> 24] + m_sbox2[nHi >>> 16 & 0xff] ^ m_sbox3[nHi >>> 8 & 0xff]) + m_sbox4[nHi & 0xff] ^ m_pbox[4];
nHi ^= (m_sbox1[nLo >>> 24] + m_sbox2[nLo >>> 16 & 0xff] ^ m_sbox3[nLo >>> 8 & 0xff]) + m_sbox4[nLo & 0xff] ^ m_pbox[3];
nLo ^= (m_sbox1[nHi >>> 24] + m_sbox2[nHi >>> 16 & 0xff] ^ m_sbox3[nHi >>> 8 & 0xff]) + m_sbox4[nHi & 0xff] ^ m_pbox[2];
nHi ^= (m_sbox1[nLo >>> 24] + m_sbox2[nLo >>> 16 & 0xff] ^ m_sbox3[nLo >>> 8 & 0xff]) + m_sbox4[nLo & 0xff] ^ m_pbox[1];
return BlowfishUtil.makeLong(nHi, nLo ^ m_pbox[0]);
}
public void encrypt(byte inbuffer[], byte outbuffer[])
{
int nLen = inbuffer.length;
for(int nI = 0; nI < nLen; nI += 8)
{
long lTemp = BlowfishUtil.byteArrayToLong(inbuffer, nI);
lTemp = encryptBlock(lTemp);
BlowfishUtil.longToByteArray(lTemp, outbuffer, nI);
}
}
public void encrypt(byte buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI += 8)
{
long lTemp = BlowfishUtil.byteArrayToLong(buffer, nI);
lTemp = encryptBlock(lTemp);
BlowfishUtil.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 = BlowfishUtil.intArrayToLong(inbuffer, nI);
lTemp = encryptBlock(lTemp);
BlowfishUtil.longToIntArray(lTemp, outbuffer, nI);
}
}
public void encrypt(int buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI += 2)
{
long lTemp = BlowfishUtil.intArrayToLong(buffer, nI);
lTemp = encryptBlock(lTemp);
BlowfishUtil.longToIntArray(lTemp, buffer, nI);
}
}
public void encrypt(long inbuffer[], long outbuffer[])
{
int nLen = inbuffer.length;
for(int nI = 0; nI < nLen; nI++)
outbuffer[nI] = encryptBlock(inbuffer[nI]);
}
public void encrypt(long buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI++)
buffer[nI] = encryptBlock(buffer[nI]);
}
public void decrypt(byte inbuffer[], byte outbuffer[])
{
int nLen = inbuffer.length;
for(int nI = 0; nI < nLen; nI += 8)
{
long lTemp = BlowfishUtil.byteArrayToLong(inbuffer, nI);
lTemp = decryptBlock(lTemp);
BlowfishUtil.longToByteArray(lTemp, outbuffer, nI);
}
}
public void decrypt(byte buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI += 8)
{
long lTemp = BlowfishUtil.byteArrayToLong(buffer, nI);
lTemp = decryptBlock(lTemp);
BlowfishUtil.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 = BlowfishUtil.intArrayToLong(inbuffer, nI);
lTemp = decryptBlock(lTemp);
BlowfishUtil.longToIntArray(lTemp, outbuffer, nI);
}
}
public void decrypt(int buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI += 2)
{
long lTemp = BlowfishUtil.intArrayToLong(buffer, nI);
lTemp = decryptBlock(lTemp);
BlowfishUtil.longToIntArray(lTemp, buffer, nI);
}
}
public void decrypt(long inbuffer[], long outbuffer[])
{
int nLen = inbuffer.length;
for(int nI = 0; nI < nLen; nI++)
outbuffer[nI] = decryptBlock(inbuffer[nI]);
}
public void decrypt(long buffer[])
{
int nLen = buffer.length;
for(int nI = 0; nI < nLen; nI++)
buffer[nI] = decryptBlock(buffer[nI]);
}
public static final int MAXKEYLENGTH = 56;
public static final int BLOCKSIZE = 8;
static final int PBOX_ENTRIES = 18;
static final int SBOX_ENTRIES = 256;
int m_pbox[];
int m_sbox1[];
int m_sbox2[];
int m_sbox3[];
int m_sbox4[];
static final int pbox_init[] = {
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x3707344, 0xa4093822, 0x299f31d0, 0x82efa98, 0xec4e6c89, 0x452821e6, 0x38d01377,
0xbe5466cf, 0x34e90c6c, 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b
};
static final int sbox_init_1[] = {
0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7,
0x801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 0xd95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013, 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e,
0x6c9e0e8b, 0xb01e8a3e, 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a, 0x2ba9c55d, 0x741831f6,
0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677, 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5,
0xf6d6ff3, 0x83f44239, 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 0xa1f1651d, 0x39af0176,
0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe, 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d, 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 0x75372c9, 0x80991b7b,
0x25d479d8, 0xf6e8def7, 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x4c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd,
0x660f2807, 0x192e4bb3, 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8, 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760,
0x53317b48, 0x3e00df82, 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b, 0x9a53e479, 0xb6f84565,
0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8, 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64,
0x8888b812, 0x900df01c, 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 0x165fa266, 0x80957705,
0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf, 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
0x250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af, 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 0x78c14389, 0xd95a537f,
0x207d5ba2, 0x2e5b9c5, 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x8ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6,
0xff34052e, 0xc5855664, 0x53b02d5d, 0xa99f8fa1, 0x8ba4799, 0x6e85076a
};
static final int sbox_init_2[] = {
0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff,
0x5664526c, 0xc2b19ee1, 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1, 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x21ecc5e, 0x9686b3f, 0x3ebaefc9,
0x3c971814, 0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd, 0xd19113f9, 0x7ca92ff6,
0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7, 0xa9446146, 0xfd0030e, 0xecc8c73e, 0xa4751e41,
0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79,
0x5679b072, 0xbcaf89af, 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908,
0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd, 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
0x43556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509, 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 0x86e34570, 0xeae96fb1,
0x860e5e0a, 0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6,
0xebadfe6e, 0xeac31f66, 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x18cff28, 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84, 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96,
0x334fe1e, 0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7, 0x9b540b19, 0x875fa099,
0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281, 0xe358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea,
0xfe28ed61, 0xee7c3c73, 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646,
0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285, 0x95bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
0x58428d2a, 0xc55f5ea, 0x1dadf43e, 0x233f7061, 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 0x7cde3759, 0xcbee7460,
0x4085f2a7, 0xce77326e, 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
0x9e447a2e, 0xc3453484, 0xfdd56705, 0xe1e9ec9, 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8,
0x3d28f89e, 0xf16dff20, 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7
};
static final int sbox_init_3[] = {
0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068, 0xd4082471, 0x3320f46a,
0x43b7d4b7, 0x500061af, 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
0xbfbc09ec, 0x3bd9785, 0x7fac6dd0, 0x31cb8504, 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4,
0xa2c86da, 0xe9b66dfb, 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b, 0x1dc9faf7, 0x4b6d1856,
0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb, 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9,
0x5ef47e1c, 0x9029317c, 0xfdf8e802, 0x4272f70, 0x80bb155c, 0x5282ce3, 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
0x7f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60,
0xdff8e8a3, 0x1f636c1b, 0xe12b4c2, 0x2e1329e, 0xaf664fd1, 0xcad18115, 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728, 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 0x5449a36f, 0x877d48fa,
0xc39dfd27, 0xf33e8d1e, 0xa476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b, 0x667b9ffb, 0xcedb7d9c,
0xa091cf0b, 0xd9155ea3, 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c, 0x6a124237, 0xb79251e7, 0x6a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa,
0x3d25bdd8, 0xe2e1c3c9, 0x44421659, 0xa121386, 0xd90cec6e, 0xd5abea2a, 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc, 0x83426b33, 0xf01eab71,
0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61, 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770,
0x8cd55591, 0xc902de4c, 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
0xe85a1f02, 0x9f0be8c, 0x4a99a025, 0x1d6efe10, 0x1ab93d1d, 0xba5a4df, 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe,
0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0xde6d027, 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
0xf0177a28, 0xc0f586e0, 0x6058aa, 0x30dc7d62, 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 0xbbcbee56, 0x90bcb6de,
0xebfc7da1, 0xce591d76, 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
0xed545578, 0x8fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c, 0x6fd5c7e7, 0x56e14ec4,
0x362abfce, 0xddc6c837, 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0
};
static final int sbox_init_4[] = {
0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315,
0xd62d1c7e, 0xc700c47b, 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6, 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a,
0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59, 0x80e4a915, 0x87b08601,
0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x22b8b51, 0x96d5ac3a, 0x17da67d, 0xd1cf3ed6, 0x7c7d2d28,
0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc,
0xf8d56629, 0x79132e28, 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba, 0x3a16125, 0x564f0bd,
0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5,
0x3563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f, 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 0xa2ae0810, 0xdd6db224,
0x69852dfd, 0x9072166, 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e,
0xaec2771b, 0xf64e6370, 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x115af84,
0xe1b00428, 0x95983a1d, 0x6b89fb4, 0xce6ea048, 0x6f3f3b82, 0x3520ab82, 0x11a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc,
0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 0x339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f, 0xf79e59b7, 0x43f5bb3a,
0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a, 0xf91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df,
0xd3a0342b, 0x8971f21e, 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0xfe3f11d,
0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623,
0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc, 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 0x71126905, 0xb2040222,
0xb6cbcf7c, 0xcd769c2b, 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x2fb8a8c, 0x1c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0,
0x3f09252d, 0xc208e69f, 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
};
public BlowfishECB(byte bfkey[])
{
m_pbox = new int[18];
for(int nI = 0; nI < 18; nI++)
m_pbox[nI] = pbox_init[nI];
m_sbox1 = new int[256];
m_sbox2 = new int[256];
m_sbox3 = new int[256];
m_sbox4 = new int[256];
for(int nI = 0; nI < 256; nI++)
{
m_sbox1[nI] = sbox_init_1[nI];
m_sbox2[nI] = sbox_init_2[nI];
m_sbox3[nI] = sbox_init_3[nI];
m_sbox4[nI] = sbox_init_4[nI];
}
int nLen = bfkey.length;
if(nLen == 0)
return;
int nKeyPos = 0;
int nBuild = 0;
for(int nI = 0; nI < 18; nI++)
{
for(int nJ = 0; nJ < 4; nJ++)
{
nBuild = nBuild << 8 | bfkey[nKeyPos] & 0xff;
if(++nKeyPos == nLen)
nKeyPos = 0;
}
m_pbox[nI] ^= nBuild;
}
long lZero = 0L;
for(int nI = 0; nI < 18; nI += 2)
{
lZero = encryptBlock(lZero);
m_pbox[nI] = (int)(lZero >>> 32);
m_pbox[nI + 1] = (int)(lZero & 0xffffffffL);
}
for(int nI = 0; nI < 256; nI += 2)
{
lZero = encryptBlock(lZero);
m_sbox1[nI] = (int)(lZero >>> 32);
m_sbox1[nI + 1] = (int)(lZero & 0xffffffffL);
}
for(int nI = 0; nI < 256; nI += 2)
{
lZero = encryptBlock(lZero);
m_sbox2[nI] = (int)(lZero >>> 32);
m_sbox2[nI + 1] = (int)(lZero & 0xffffffffL);
}
for(int nI = 0; nI < 256; nI += 2)
{
lZero = encryptBlock(lZero);
m_sbox3[nI] = (int)(lZero >>> 32);
m_sbox3[nI + 1] = (int)(lZero & 0xffffffffL);
}
for(int nI = 0; nI < 256; nI += 2)
{
lZero = encryptBlock(lZero);
m_sbox4[nI] = (int)(lZero >>> 32);
m_sbox4[nI + 1] = (int)(lZero & 0xffffffffL);
}
}
}
public BlowfishUtil(String password)
{
MessageDigest digest = null;
try
{
digest = MessageDigest.getInstance("SHA1");
digest.update(password.getBytes());
}
catch(Exception e)
{
}
m_bfish = new BlowfishCBC(digest.digest(), 0L);
digest.reset();
}
public String encryptString(String sPlainText)
{
long lCBCIV;
synchronized(m_rndGen)
{
lCBCIV = m_rndGen.nextLong();
}
return encStr(sPlainText, lCBCIV);
}
private String encStr(String sPlainText, long lNewCBCIV)
{
int nStrLen = sPlainText.length();
byte buf[] = new byte[(nStrLen << 1 & -8) + 8];
int nPos = 0;
for(int nI = 0; nI < nStrLen; nI++)
{
char cActChar = sPlainText.charAt(nI);
buf[nPos++] = (byte)(cActChar >> 8 & 0xff);
buf[nPos++] = (byte)(cActChar & 0xff);
}
byte bPadVal = (byte)(buf.length - (nStrLen << 1));
while(nPos < buf.length)
buf[nPos++] = bPadVal;
m_bfish.setCBCIV(lNewCBCIV);
m_bfish.encrypt(buf);
byte newCBCIV[] = new byte[8];
longToByteArray(lNewCBCIV, newCBCIV, 0);
return bytesToBinHex(newCBCIV, 0, 8) + bytesToBinHex(buf, 0, buf.length);
}
public String decryptString(String sCipherText)
{
int nLen = sCipherText.length() >> 1 & -8;
if(nLen < 8)
return null;
byte cbciv[] = new byte[8];
int nNumOfBytes = binHexToBytes(sCipherText, cbciv, 0, 0, 8);
if(nNumOfBytes < 8)
return null;
m_bfish.setCBCIV(cbciv);
if((nLen -= 8) == 0)
return "";
byte buf[] = new byte[nLen];
nNumOfBytes = binHexToBytes(sCipherText, buf, 16, 0, nLen);
if(nNumOfBytes < nLen)
return null;
m_bfish.decrypt(buf);
int nPadByte = buf[buf.length - 1] & 0xff;
if(nPadByte > 8 || nPadByte < 0)
nPadByte = 0;
nNumOfBytes -= nPadByte;
if(nNumOfBytes < 0)
return "";
else
return byteArrayToUNCString(buf, 0, nNumOfBytes);
}
public void destroy()
{
m_bfish.cleanUp();
}
private static long byteArrayToLong(byte buffer[], int nStartIndex)
{
return (long)buffer[nStartIndex] << 56 | ((long)buffer[nStartIndex + 1] & 255L) << 48 | ((long)buffer[nStartIndex + 2] & 255L) << 40 | ((long)buffer[nStartIndex + 3] & 255L) << 32 | ((long)buffer[nStartIndex + 4] & 255L) << 24 | ((long)buffer[nStartIndex + 5] & 255L) << 16 | ((long)buffer[nStartIndex + 6] & 255L) << 8 | (long)buffer[nStartIndex + 7] & 255L;
}
private static void longToByteArray(long lValue, byte buffer[], int nStartIndex)
{
buffer[nStartIndex] = (byte)(int)(lValue >>> 56);
buffer[nStartIndex + 1] = (byte)(int)(lValue >>> 48 & 255L);
buffer[nStartIndex + 2] = (byte)(int)(lValue >>> 40 & 255L);
buffer[nStartIndex + 3] = (byte)(int)(lValue >>> 32 & 255L);
buffer[nStartIndex + 4] = (byte)(int)(lValue >>> 24 & 255L);
buffer[nStartIndex + 5] = (byte)(int)(lValue >>> 16 & 255L);
buffer[nStartIndex + 6] = (byte)(int)(lValue >>> 8 & 255L);
buffer[nStartIndex + 7] = (byte)(int)lValue;
}
private static long intArrayToLong(int buffer[], int nStartIndex)
{
return (long)buffer[nStartIndex] << 32 | (long)buffer[nStartIndex + 1] & 0xffffffffL;
}
private static void longToIntArray(long lValue, int buffer[], int nStartIndex)
{
buffer[nStartIndex] = (int)(lValue >>> 32);
buffer[nStartIndex + 1] = (int)lValue;
}
private static long makeLong(int nLo, int nHi)
{
return (long)nHi << 32 | (long)nLo & 0xffffffffL;
}
private static int longLo32(long lVal)
{
return (int)lVal;
}
private static int longHi32(long lVal)
{
return (int)(lVal >>> 32);
}
private static String bytesToBinHex(byte data[], int nStartPos, int nNumOfBytes)
{
StringBuffer sbuf = new StringBuffer();
sbuf.setLength(nNumOfBytes << 1);
int nPos = 0;
for(int nI = 0; nI < nNumOfBytes; nI++)
{
sbuf.setCharAt(nPos++, HEXTAB[data[nI + nStartPos] >> 4 & 0xf]);
sbuf.setCharAt(nPos++, HEXTAB[data[nI + nStartPos] & 0xf]);
}
return sbuf.toString();
}
private static int binHexToBytes(String sBinHex, byte data[], int nSrcPos, int nDstPos, int nNumOfBytes)
{
int nStrLen = sBinHex.length();
int nAvailBytes = nStrLen - nSrcPos >> 1;
if(nAvailBytes < nNumOfBytes)
nNumOfBytes = nAvailBytes;
int nOutputCapacity = data.length - nDstPos;
if(nNumOfBytes > nOutputCapacity)
nNumOfBytes = nOutputCapacity;
int nResult = 0;
for(int nI = 0; nI < nNumOfBytes; nI++)
{
byte bActByte = 0;
boolean blConvertOK = true;
for(int nJ = 0; nJ < 2; nJ++)
{
bActByte <<= 4;
char cActChar = sBinHex.charAt(nSrcPos++);
if(cActChar >= 'a' && cActChar <= 'f')
{
bActByte |= (byte)(cActChar - 97) + 10;
continue;
}
if(cActChar >= '0' && cActChar <= '9')
bActByte |= (byte)(cActChar - 48);
else
blConvertOK = false;
}
if(blConvertOK)
{
data[nDstPos++] = bActByte;
nResult++;
}
}
return nResult;
}
private static String byteArrayToUNCString(byte data[], int nStartPos, int nNumOfBytes)
{
nNumOfBytes &= -2;
int nAvailCapacity = data.length - nStartPos;
if(nAvailCapacity < nNumOfBytes)
nNumOfBytes = nAvailCapacity;
StringBuffer sbuf = new StringBuffer();
sbuf.setLength(nNumOfBytes >> 1);
int nSBufPos = 0;
for(; nNumOfBytes > 0; nNumOfBytes -= 2)
{
sbuf.setCharAt(nSBufPos++, (char)(data[nStartPos] << 8 | data[nStartPos + 1] & 0xff));
nStartPos += 2;
}
return sbuf.toString();
}
}
我覺得這個算法還不錯了，因為這個算法需要設置一個密鑰，只有通過密鑰才能解密，如果沒有密鑰解密的幾率那是相當相當的小的。
給大家個例子 ：
public class BlowfishTest {
public static void main(String[] args){
String keyString = "closewbq";
String str="blowfish";
BlowfishUtil crypt = new BlowfishUtil(keyString);
String tempStr=crypt.encryptString(str);
System.out.println(tempStr);
System.out.println(crypt.decryptString(tempStr));
}
}
結果：f7874298504f52f57c9cad59c9dbae11e1d21a15832dda4768f40c3dff9761b8
blowfish
posted on 2011-04-28 19:51
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