며칠 전 갑자기 인터넷에 루머가 돌았습니다. 동동에서 12G 데이터 유출이 발생했습니다. 결국 동동은 성명서에서 이를 부인하지 않았지만 마지 못해 그 영향에 대한 정보가 많이 있습니다. 일반 사람들이 겪은 이번 사건과 이에 대해 어떻게 해야 하는지에 대해 많은 사람들이 이야기했기 때문에 나는 재미에 동참하지 않을 것이다. 프로그래머들에게 실용적인 것에 대해 이야기하고, 개인적으로 상대적이라고 생각하는 암호화 알고리즘에 대해 이야기해보자. 안전: 복어.
코드에 들어가기 전에 Blowfish 암호화 알고리즘의 몇 가지 기능에 대해 이야기해 보겠습니다.
1. 대칭 암호화, 즉 암호화 키와 복호화입니다. 키는 동일합니다. ;
2. 암호화할 때마다 결과가 다릅니다(이 점이 더 마음에 듭니다). Reversible , 이전 글에서 소개한
md54. 속도가 빠르고 암호화 및 복호화 과정이 간단합니다. 기본적으로 ADD로 구성되어 있으며 BlowFish는 한 번에 8바이트의 데이터만 암호화하고 해독할 수 있습니다.
다음 단계는 가장 중요한 부분인 Blowfish 암호화 알고리즘의 구현입니다.
package cn.bridgeli.encrypt;
public enum BlowfishManager {
BRIDGELI_CN("bridgeli_cn!@#$abc123_");
private BlowfishManager(String secret) {
this.blowfish = new Blowfish(secret);
}
private Blowfish blowfish;
public Blowfish getBlowfish() {
return blowfish;
}
/**
* 解密
* @param sCipherText
* @return
*/
public String decryptString(String sCipherText){
return this.getBlowfish().decryptString(sCipherText);
}
/**
* 加密
* @param sPlainText
* @return
*/
public String encryptString(String sPlainText){
return this.getBlowfish().encryptString(sPlainText);
}
public static void main(String[] args) {
String encryptString = BlowfishManager.BRIDGELI_CN.encryptString(10 + "");
System.out.println(encryptString);
String decryptString = BlowfishManager.BRIDGELI_CN.decryptString(encryptString);
System.out.println(decryptString);
}
}는 사용이 매우 간단하고 사용자 친화적입니다. 다음은 알고리즘의 구체적인 구현입니다.
package cn.bridgeli.encrypt;
import java.security.MessageDigest;
import java.util.Random;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Blowfish {
private static final Logger LOG = LoggerFactory.getLogger(Blowfish.class);
private static class BlowfishCBC extends BlowfishECB {
public void setCBCIV(long lNewCBCIV) {
m_lCBCIV = lNewCBCIV;
}
public void setCBCIV(byte newCBCIV[]) {
m_lCBCIV = Blowfish.byteArrayToLong(newCBCIV, 0);
}
@Override
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 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 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);
}
}
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 = 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 >>> 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 Blowfish.makeLong(nHi, nLo ^ pbox[17]);
}
protected long decryptBlock(long lCipherBlock) {
int nHi = Blowfish.longHi32(lCipherBlock);
int nLo = Blowfish.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 Blowfish.makeLong(nHi, nLo ^ m_pbox[0]);
}
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 Blowfish(String password) {
MessageDigest digest = null;
try {
digest = MessageDigest.getInstance("SHA1");
digest.update(password.getBytes());
} catch (Exception e) {
LOG.error(e.getMessage(), 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 | (buffer[nStartIndex + 1] & 255L) << 48
| (buffer[nStartIndex + 2] & 255L) << 40
| (buffer[nStartIndex + 3] & 255L) << 32
| (buffer[nStartIndex + 4] & 255L) << 24
| (buffer[nStartIndex + 5] & 255L) << 16
| (buffer[nStartIndex + 6] & 255L) << 8 | 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 makeLong(int nLo, int nHi) {
return (long) nHi << 32 | 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();
}
private BlowfishCBC m_bfish;
private static Random m_rndGen = new Random();
static final char HEXTAB[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
}위 내용은 Java에서 Blowfish 암호화 알고리즘을 간단하게 구현하는 코드 예의 상세 내용입니다. 자세한 내용은 PHP 중국어 웹사이트의 기타 관련 기사를 참조하세요!
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