www.pudn.com > javaMd5cc.rar > Md5.java
// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi
// Source File Name: Md5.java
package com.cwc.util;
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[];
private long count[];
private byte buffer[];
public String digestHexStr;
private byte digest[];
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()
{
state = new long[4];
count = new long[2];
buffer = new byte[64];
digest = new byte[16];
md5Init();
}
private void md5Init()
{
count[0] = 0L;
count[1] = 0L;
state[0] = 0x67452301L;
state[1] = 0xefcdab89L;
state[2] = 0x98badcfeL;
state[3] = 0x10325476L;
}
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;
}
private long I(long x, long y, long z)
{
return y ^ (x | ~z);
}
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 << (int)s | (int)a >>> (int)(32L - 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 << (int)s | (int)a >>> (int)(32L - 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 << (int)s | (int)a >>> (int)(32L - 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 << (int)s | (int)a >>> (int)(32L - s);
a += b;
return a;
}
private void md5Update(byte inbuf[], int inputLen)
{
byte block[] = new byte[64];
int index = (int)(count[0] >>> 3) & 0x3f;
if((count[0] += inputLen << 3) < (long)(inputLen << 3))
count[1]++;
count[1] += inputLen >>> 29;
int partLen = 64 - index;
int i;
if(inputLen >= partLen)
{
md5Memcpy(buffer, inbuf, index, 0, partLen);
md5Transform(buffer);
for(i = partLen; i + 63 < inputLen; i += 64)
{
md5Memcpy(block, inbuf, 0, i, 64);
md5Transform(block);
}
index = 0;
} else
{
i = 0;
}
md5Memcpy(buffer, inbuf, index, i, inputLen - i);
}
private void md5Final()
{
byte bits[] = new byte[8];
Encode(bits, count, 8);
int index = (int)(count[0] >>> 3) & 0x3f;
int padLen = index >= 56 ? 120 - index : 56 - index;
md5Update(PADDING, padLen);
md5Update(bits, 8);
Encode(digest, state, 16);
}
private void md5Memcpy(byte output[], byte input[], int outpos, int inpos, int len)
{
for(int i = 0; i < len; i++)
output[outpos + i] = input[inpos + i];
}
private void md5Transform(byte block[])
{
long a = state[0];
long b = state[1];
long c = state[2];
long d = state[3];
long x[] = new long[16];
Decode(x, block, 64);
a = FF(a, b, c, d, x[0], 7L, 0xd76aa478L);
d = FF(d, a, b, c, x[1], 12L, 0xe8c7b756L);
c = FF(c, d, a, b, x[2], 17L, 0x242070dbL);
b = FF(b, c, d, a, x[3], 22L, 0xc1bdceeeL);
a = FF(a, b, c, d, x[4], 7L, 0xf57c0fafL);
d = FF(d, a, b, c, x[5], 12L, 0x4787c62aL);
c = FF(c, d, a, b, x[6], 17L, 0xa8304613L);
b = FF(b, c, d, a, x[7], 22L, 0xfd469501L);
a = FF(a, b, c, d, x[8], 7L, 0x698098d8L);
d = FF(d, a, b, c, x[9], 12L, 0x8b44f7afL);
c = FF(c, d, a, b, x[10], 17L, 0xffff5bb1L);
b = FF(b, c, d, a, x[11], 22L, 0x895cd7beL);
a = FF(a, b, c, d, x[12], 7L, 0x6b901122L);
d = FF(d, a, b, c, x[13], 12L, 0xfd987193L);
c = FF(c, d, a, b, x[14], 17L, 0xa679438eL);
b = FF(b, c, d, a, x[15], 22L, 0x49b40821L);
a = GG(a, b, c, d, x[1], 5L, 0xf61e2562L);
d = GG(d, a, b, c, x[6], 9L, 0xc040b340L);
c = GG(c, d, a, b, x[11], 14L, 0x265e5a51L);
b = GG(b, c, d, a, x[0], 20L, 0xe9b6c7aaL);
a = GG(a, b, c, d, x[5], 5L, 0xd62f105dL);
d = GG(d, a, b, c, x[10], 9L, 0x2441453L);
c = GG(c, d, a, b, x[15], 14L, 0xd8a1e681L);
b = GG(b, c, d, a, x[4], 20L, 0xe7d3fbc8L);
a = GG(a, b, c, d, x[9], 5L, 0x21e1cde6L);
d = GG(d, a, b, c, x[14], 9L, 0xc33707d6L);
c = GG(c, d, a, b, x[3], 14L, 0xf4d50d87L);
b = GG(b, c, d, a, x[8], 20L, 0x455a14edL);
a = GG(a, b, c, d, x[13], 5L, 0xa9e3e905L);
d = GG(d, a, b, c, x[2], 9L, 0xfcefa3f8L);
c = GG(c, d, a, b, x[7], 14L, 0x676f02d9L);
b = GG(b, c, d, a, x[12], 20L, 0x8d2a4c8aL);
a = HH(a, b, c, d, x[5], 4L, 0xfffa3942L);
d = HH(d, a, b, c, x[8], 11L, 0x8771f681L);
c = HH(c, d, a, b, x[11], 16L, 0x6d9d6122L);
b = HH(b, c, d, a, x[14], 23L, 0xfde5380cL);
a = HH(a, b, c, d, x[1], 4L, 0xa4beea44L);
d = HH(d, a, b, c, x[4], 11L, 0x4bdecfa9L);
c = HH(c, d, a, b, x[7], 16L, 0xf6bb4b60L);
b = HH(b, c, d, a, x[10], 23L, 0xbebfbc70L);
a = HH(a, b, c, d, x[13], 4L, 0x289b7ec6L);
d = HH(d, a, b, c, x[0], 11L, 0xeaa127faL);
c = HH(c, d, a, b, x[3], 16L, 0xd4ef3085L);
b = HH(b, c, d, a, x[6], 23L, 0x4881d05L);
a = HH(a, b, c, d, x[9], 4L, 0xd9d4d039L);
d = HH(d, a, b, c, x[12], 11L, 0xe6db99e5L);
c = HH(c, d, a, b, x[15], 16L, 0x1fa27cf8L);
b = HH(b, c, d, a, x[2], 23L, 0xc4ac5665L);
a = II(a, b, c, d, x[0], 6L, 0xf4292244L);
d = II(d, a, b, c, x[7], 10L, 0x432aff97L);
c = II(c, d, a, b, x[14], 15L, 0xab9423a7L);
b = II(b, c, d, a, x[5], 21L, 0xfc93a039L);
a = II(a, b, c, d, x[12], 6L, 0x655b59c3L);
d = II(d, a, b, c, x[3], 10L, 0x8f0ccc92L);
c = II(c, d, a, b, x[10], 15L, 0xffeff47dL);
b = II(b, c, d, a, x[1], 21L, 0x85845dd1L);
a = II(a, b, c, d, x[8], 6L, 0x6fa87e4fL);
d = II(d, a, b, c, x[15], 10L, 0xfe2ce6e0L);
c = II(c, d, a, b, x[6], 15L, 0xa3014314L);
b = II(b, c, d, a, x[13], 21L, 0x4e0811a1L);
a = II(a, b, c, d, x[4], 6L, 0xf7537e82L);
d = II(d, a, b, c, x[11], 10L, 0xbd3af235L);
c = II(c, d, a, b, x[2], 15L, 0x2ad7d2bbL);
b = II(b, c, d, a, x[9], 21L, 0xeb86d391L);
state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d;
}
private void Encode(byte output[], long input[], int len)
{
int i = 0;
for(int j = 0; j < len; j += 4)
{
output[j] = (byte)(int)(input[i] & 255L);
output[j + 1] = (byte)(int)(input[i] >>> 8 & 255L);
output[j + 2] = (byte)(int)(input[i] >>> 16 & 255L);
output[j + 3] = (byte)(int)(input[i] >>> 24 & 255L);
i++;
}
}
private void Decode(long output[], byte input[], int len)
{
int i = 0;
for(int j = 0; j < len; j += 4)
{
output[i] = b2iu(input[j]) | b2iu(input[j + 1]) << 8 | b2iu(input[j + 2]) << 16 | b2iu(input[j + 3]) << 24;
i++;
}
}
public static long b2iu(byte b)
{
return (long)(b >= 0 ? b : b & 0xff);
}
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 & 0xf];
ob[1] = Digit[ib & 0xf];
String s = new String(ob);
return s;
}
}