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- package com.HandcnCMS.utility;
- import java.lang.reflect.*;
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- public class MD5 {
-
-
-
- static final int S11 = 7;
- static final int S12 = 12;
- static final int S13 = 17;
- static final int S14 = 22;
-
- static final int S21 = 5;
- static final int S22 = 9;
- static final int S23 = 14;
- static final int S24 = 20;
-
- static final int S31 = 4;
- static final int S32 = 11;
- static final int S33 = 16;
- static final int S34 = 23;
-
- static final int S41 = 6;
- static final int S42 = 10;
- static final int S43 = 15;
- static final int S44 = 21;
-
- static final byte[] PADDING = { -128, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
-
-
-
-
- private long[] state = new long[4];
- private long[] count = new long[2];
- private byte[] buffer = new byte[64];
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- public String digestHexStr;
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- private byte[] digest = new byte[16];
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-
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- public String getMD5ofStr(String inbuf) {
- md5Init();
- md5Update(inbuf.getBytes(), inbuf.length());
- md5Final();
- digestHexStr = "";
- for (int i = 0; i < 16; i++) {
- digestHexStr += byteHEX(digest[i]);
- }
- return digestHexStr;
-
- }
-
- public MD5() {
- md5Init();
-
- return;
- }
-
-
-
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- private void md5Init() {
- count[0] = 0L;
- count[1] = 0L;
-
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- state[0] = 0x67452301L;
- state[1] = 0xefcdab89L;
- state[2] = 0x98badcfeL;
- state[3] = 0x10325476L;
-
- return;
- }
- /* F, G, H ,I 是4个基本的MD5函数,在原始的MD5的C实现中,由于它们是
- 简单的位运算,可能出于效率的考虑把它们实现成了宏,在java中,我们把它们
- 实现成了private方法,名字保持了原来C中的。 */
-
- private long F(long x, long y, long z) {
- return (x & y) | ((~x) & z);
-
- }
- private long G(long x, long y, long z) {
- return (x & z) | (y & (~z));
-
- }
- private long H(long x, long y, long z) {
- return x ^ y ^ z;
- }
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- private long I(long x, long y, long z) {
- return y ^ (x | (~z));
- }
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- private long FF(long a, long b, long c, long d, long x, long s,
- long ac) {
- a += F (b, c, d) + x + ac;
- a = ((int) a << s) | ((int) a >>> (32 - s));
- a += b;
- return a;
- }
-
- private long GG(long a, long b, long c, long d, long x, long s,
- long ac) {
- a += G (b, c, d) + x + ac;
- a = ((int) a << s) | ((int) a >>> (32 - s));
- a += b;
- return a;
- }
- private long HH(long a, long b, long c, long d, long x, long s,
- long ac) {
- a += H (b, c, d) + x + ac;
- a = ((int) a << s) | ((int) a >>> (32 - s));
- a += b;
- return a;
- }
- private long II(long a, long b, long c, long d, long x, long s,
- long ac) {
- a += I (b, c, d) + x + ac;
- a = ((int) a << s) | ((int) a >>> (32 - s));
- a += b;
- return a;
- }
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- private void md5Update(byte[] inbuf, int inputLen) {
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- int i, index, partLen;
- byte[] block = new byte[64];
- index = (int)(count[0] >>> 3) & 0x3F;
-
-
- if ((count[0] += (inputLen << 3)) < (inputLen << 3))
- count[1]++;
- count[1] += (inputLen >>> 29);
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- partLen = 64 - index;
-
-
- if (inputLen >= partLen) {
- md5Memcpy(buffer, inbuf, index, 0, partLen);
- md5Transform(buffer);
-
- for (i = partLen; i + 63 < inputLen; i += 64) {
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- md5Memcpy(block, inbuf, 0, i, 64);
- md5Transform (block);
- }
- index = 0;
-
- } else
-
- i = 0;
-
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- md5Memcpy(buffer, inbuf, index, i, inputLen - i);
-
- }
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- private void md5Final () {
- byte[] bits = new byte[8];
- int index, padLen;
-
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- Encode (bits, count, 8);
-
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- index = (int)(count[0] >>> 3) & 0x3f;
- padLen = (index < 56) ? (56 - index) : (120 - index);
- md5Update (PADDING, padLen);
-
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- md5Update(bits, 8);
-
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- Encode (digest, state, 16);
-
- }
-
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-
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- private void md5Memcpy (byte[] output, byte[] input,
- int outpos, int inpos, int len)
- {
- int i;
-
- for (i = 0; i < len; i++)
- output[outpos + i] = input[inpos + i];
- }
-
-
-
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- private void md5Transform (byte block[]) {
- long a = state[0], b = state[1], c = state[2], d = state[3];
- long[] x = new long[16];
-
- Decode (x, block, 64);
-
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- a = FF (a, b, c, d, x[0], S11, 0xd76aa478L);
- d = FF (d, a, b, c, x[1], S12, 0xe8c7b756L);
- c = FF (c, d, a, b, x[2], S13, 0x242070dbL);
- b = FF (b, c, d, a, x[3], S14, 0xc1bdceeeL);
- a = FF (a, b, c, d, x[4], S11, 0xf57c0fafL);
- d = FF (d, a, b, c, x[5], S12, 0x4787c62aL);
- c = FF (c, d, a, b, x[6], S13, 0xa8304613L);
- b = FF (b, c, d, a, x[7], S14, 0xfd469501L);
- a = FF (a, b, c, d, x[8], S11, 0x698098d8L);
- d = FF (d, a, b, c, x[9], S12, 0x8b44f7afL);
- c = FF (c, d, a, b, x[10], S13, 0xffff5bb1L);
- b = FF (b, c, d, a, x[11], S14, 0x895cd7beL);
- a = FF (a, b, c, d, x[12], S11, 0x6b901122L);
- d = FF (d, a, b, c, x[13], S12, 0xfd987193L);
- c = FF (c, d, a, b, x[14], S13, 0xa679438eL);
- b = FF (b, c, d, a, x[15], S14, 0x49b40821L);
-
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- a = GG (a, b, c, d, x[1], S21, 0xf61e2562L);
- d = GG (d, a, b, c, x[6], S22, 0xc040b340L);
- c = GG (c, d, a, b, x[11], S23, 0x265e5a51L);
- b = GG (b, c, d, a, x[0], S24, 0xe9b6c7aaL);
- a = GG (a, b, c, d, x[5], S21, 0xd62f105dL);
- d = GG (d, a, b, c, x[10], S22, 0x2441453L);
- c = GG (c, d, a, b, x[15], S23, 0xd8a1e681L);
- b = GG (b, c, d, a, x[4], S24, 0xe7d3fbc8L);
- a = GG (a, b, c, d, x[9], S21, 0x21e1cde6L);
- d = GG (d, a, b, c, x[14], S22, 0xc33707d6L);
- c = GG (c, d, a, b, x[3], S23, 0xf4d50d87L);
- b = GG (b, c, d, a, x[8], S24, 0x455a14edL);
- a = GG (a, b, c, d, x[13], S21, 0xa9e3e905L);
- d = GG (d, a, b, c, x[2], S22, 0xfcefa3f8L);
- c = GG (c, d, a, b, x[7], S23, 0x676f02d9L);
- b = GG (b, c, d, a, x[12], S24, 0x8d2a4c8aL);
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- a = HH (a, b, c, d, x[5], S31, 0xfffa3942L);
- d = HH (d, a, b, c, x[8], S32, 0x8771f681L);
- c = HH (c, d, a, b, x[11], S33, 0x6d9d6122L);
- b = HH (b, c, d, a, x[14], S34, 0xfde5380cL);
- a = HH (a, b, c, d, x[1], S31, 0xa4beea44L);
- d = HH (d, a, b, c, x[4], S32, 0x4bdecfa9L);
- c = HH (c, d, a, b, x[7], S33, 0xf6bb4b60L);
- b = HH (b, c, d, a, x[10], S34, 0xbebfbc70L);
- a = HH (a, b, c, d, x[13], S31, 0x289b7ec6L);
- d = HH (d, a, b, c, x[0], S32, 0xeaa127faL);
- c = HH (c, d, a, b, x[3], S33, 0xd4ef3085L);
- b = HH (b, c, d, a, x[6], S34, 0x4881d05L);
- a = HH (a, b, c, d, x[9], S31, 0xd9d4d039L);
- d = HH (d, a, b, c, x[12], S32, 0xe6db99e5L);
- c = HH (c, d, a, b, x[15], S33, 0x1fa27cf8L);
- b = HH (b, c, d, a, x[2], S34, 0xc4ac5665L);
-
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- a = II (a, b, c, d, x[0], S41, 0xf4292244L);
- d = II (d, a, b, c, x[7], S42, 0x432aff97L);
- c = II (c, d, a, b, x[14], S43, 0xab9423a7L);
- b = II (b, c, d, a, x[5], S44, 0xfc93a039L);
- a = II (a, b, c, d, x[12], S41, 0x655b59c3L);
- d = II (d, a, b, c, x[3], S42, 0x8f0ccc92L);
- c = II (c, d, a, b, x[10], S43, 0xffeff47dL);
- b = II (b, c, d, a, x[1], S44, 0x85845dd1L);
- a = II (a, b, c, d, x[8], S41, 0x6fa87e4fL);
- d = II (d, a, b, c, x[15], S42, 0xfe2ce6e0L);
- c = II (c, d, a, b, x[6], S43, 0xa3014314L);
- b = II (b, c, d, a, x[13], S44, 0x4e0811a1L);
- a = II (a, b, c, d, x[4], S41, 0xf7537e82L);
- d = II (d, a, b, c, x[11], S42, 0xbd3af235L);
- c = II (c, d, a, b, x[2], S43, 0x2ad7d2bbL);
- b = II (b, c, d, a, x[9], S44, 0xeb86d391L);
-
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
-
- }
-
-
-
-
- private void Encode (byte[] output, long[] input, int len) {
- int i, j;
-
- for (i = 0, j = 0; j < len; i++, j += 4) {
- output[j] = (byte)(input[i] & 0xffL);
- output[j + 1] = (byte)((input[i] >>> 8) & 0xffL);
- output[j + 2] = (byte)((input[i] >>> 16) & 0xffL);
- output[j + 3] = (byte)((input[i] >>> 24) & 0xffL);
- }
- }
-
-
-
-
- private void Decode (long[] output, byte[] input, int len) {
- int i, j;
-
-
- for (i = 0, j = 0; j < len; i++, j += 4)
- output[i] = b2iu(input[j]) |
- (b2iu(input[j + 1]) << 8) |
- (b2iu(input[j + 2]) << 16) |
- (b2iu(input[j + 3]) << 24);
-
- return;
- }
-
-
-
-
- public static long b2iu(byte b) {
- return b < 0 ? b & 0x7F + 128 : b;
- }
-
-
-
-
-
- public static String byteHEX(byte ib) {
- char[] Digit = { '0','1','2','3','4','5','6','7','8','9',
- 'a','b','c','d','e','f' };
- char [] ob = new char[2];
- ob[0] = Digit[(ib >>> 4) & 0X0F];
- ob[1] = Digit[ib & 0X0F];
- String s = new String(ob);
- return s;
- }
-
- public static void main(String args[]) {
-
-
- MD5 m = new MD5();
- if (Array.getLength(args) == 0) {
-
- System.out.println("MD5 Test suite:");
- System.out.println("MD5(/"10/"):"+m.getMD5ofStr("355694005457784"));
- System.out.println("MD5(/"11/"):"+m.getMD5ofStr("800922"));
- System.out.println("MB5(/"12/"):"+m.getMD5ofStr("781214"));
- System.out.println("MD5(/"13/"):"+m.getMD5ofStr("13"));
- System.out.println("MD5(/"message digest/"):"+m.getMD5ofStr("message digest"));
- System.out.println("MD5(/"abcdefghijklmnopqrstuvwxyz/"):"+
- m.getMD5ofStr("abcdefghijklmnopqrstuvwxyz"));
- System.out.println("MD5(/"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/"):"+
- m.getMD5ofStr("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"));
- }
- else
- System.out.println("MD5(" + args[0] + ")=" + m.getMD5ofStr(args[0]));
-
-
- }
- }
posted @
2009-10-21 13:10
java程序代码
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