package com.mvc.common.util;//import required classespublic class MD5 {	private static MD5 md5 = null;	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 static synchronized MD5 getInstance() {		if (md5 == null)			md5 = new MD5();		return md5;	}	public String getMD5ofStr(String s) {		md5Init();		md5Update(s.getBytes(), s.length());		md5Final();		digestHexStr = "";		for (int i = 0; i < 16; i++) {			digestHexStr += byteHEX(digest[i]);		}		return digestHexStr;	}	private 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 l, long l1, long l2) {		return l & l1 | ~l & l2;	}	private long G(long l, long l1, long l2) {		return l & l2 | l1 & ~l2;	}	private long H(long l, long l1, long l2) {		return l ^ l1 ^ l2;	}	private long I(long l, long l1, long l2) {		return l1 ^ (l | ~l2);	}	private long FF(long l, long l1, long l2, long l3, long l4, long l5, long l6) {		l += F(l1, l2, l3) + l4 + l6;		l = (int) l << (int) l5 | (int) l >>> (int) (32L - l5);		l += l1;		return l;	}	private long GG(long l, long l1, long l2, long l3, long l4, long l5, long l6) {		l += G(l1, l2, l3) + l4 + l6;		l = (int) l << (int) l5 | (int) l >>> (int) (32L - l5);		l += l1;		return l;	}	private long HH(long l, long l1, long l2, long l3, long l4, long l5, long l6) {		l += H(l1, l2, l3) + l4 + l6;		l = (int) l << (int) l5 | (int) l >>> (int) (32L - l5);		l += l1;		return l;	}	private long II(long l, long l1, long l2, long l3, long l4, long l5, long l6) {		l += I(l1, l2, l3) + l4 + l6;		l = (int) l << (int) l5 | (int) l >>> (int) (32L - l5);		l += l1;		return l;	}	private void md5Update(byte abyte0[], int i) {		byte abyte1[] = new byte[64];		int k = (int) (count[0] >>> 3) & 0x3f;		if ((count[0] += i << 3) < (long) (i << 3)) {			count[1]++;		}		count[1] += i >>> 29;		int l = 64 - k;		int j;		if (i >= l) {			md5Memcpy(buffer, abyte0, k, 0, l);			md5Transform(buffer);			for (j = l; j + 63 < i; j += 64) {				md5Memcpy(abyte1, abyte0, 0, j, 64);				md5Transform(abyte1);			}			k = 0;		} else {			j = 0;		}		md5Memcpy(buffer, abyte0, k, j, i - j);	}	private void md5Final() {		byte abyte0[] = new byte[8];		Encode(abyte0, count, 8);		int i = (int) (count[0] >>> 3) & 0x3f;		int j = i >= 56 ? 120 - i : 56 - i;		md5Update(PADDING, j);		md5Update(abyte0, 8);		Encode(digest, state, 16);	}	private void md5Memcpy(byte abyte0[], byte abyte1[], int i, int j, int k) {		for (int l = 0; l < k; l++) {			abyte0[i + l] = abyte1[j + l];		}	}	private void md5Transform(byte abyte0[]) {		long l = state[0];		long l1 = state[1];		long l2 = state[2];		long l3 = state[3];		long al[] = new long[16];		Decode(al, abyte0, 64);		l = FF(l, l1, l2, l3, al[0], 7L, 0xd76aa478L);		l3 = FF(l3, l, l1, l2, al[1], 12L, 0xe8c7b756L);		l2 = FF(l2, l3, l, l1, al[2], 17L, 0x242070dbL);		l1 = FF(l1, l2, l3, l, al[3], 22L, 0xc1bdceeeL);		l = FF(l, l1, l2, l3, al[4], 7L, 0xf57c0fafL);		l3 = FF(l3, l, l1, l2, al[5], 12L, 0x4787c62aL);		l2 = FF(l2, l3, l, l1, al[6], 17L, 0xa8304613L);		l1 = FF(l1, l2, l3, l, al[7], 22L, 0xfd469501L);		l = FF(l, l1, l2, l3, al[8], 7L, 0x698098d8L);		l3 = FF(l3, l, l1, l2, al[9], 12L, 0x8b44f7afL);		l2 = FF(l2, l3, l, l1, al[10], 17L, 0xffff5bb1L);		l1 = FF(l1, l2, l3, l, al[11], 22L, 0x895cd7beL);		l = FF(l, l1, l2, l3, al[12], 7L, 0x6b901122L);		l3 = FF(l3, l, l1, l2, al[13], 12L, 0xfd987193L);		l2 = FF(l2, l3, l, l1, al[14], 17L, 0xa679438eL);		l1 = FF(l1, l2, l3, l, al[15], 22L, 0x49b40821L);		l = GG(l, l1, l2, l3, al[1], 5L, 0xf61e2562L);		l3 = GG(l3, l, l1, l2, al[6], 9L, 0xc040b340L);		l2 = GG(l2, l3, l, l1, al[11], 14L, 0x265e5a51L);		l1 = GG(l1, l2, l3, l, al[0], 20L, 0xe9b6c7aaL);		l = GG(l, l1, l2, l3, al[5], 5L, 0xd62f105dL);		l3 = GG(l3, l, l1, l2, al[10], 9L, 0x2441453L);		l2 = GG(l2, l3, l, l1, al[15], 14L, 0xd8a1e681L);		l1 = GG(l1, l2, l3, l, al[4], 20L, 0xe7d3fbc8L);		l = GG(l, l1, l2, l3, al[9], 5L, 0x21e1cde6L);		l3 = GG(l3, l, l1, l2, al[14], 9L, 0xc33707d6L);		l2 = GG(l2, l3, l, l1, al[3], 14L, 0xf4d50d87L);		l1 = GG(l1, l2, l3, l, al[8], 20L, 0x455a14edL);		l = GG(l, l1, l2, l3, al[13], 5L, 0xa9e3e905L);		l3 = GG(l3, l, l1, l2, al[2], 9L, 0xfcefa3f8L);		l2 = GG(l2, l3, l, l1, al[7], 14L, 0x676f02d9L);		l1 = GG(l1, l2, l3, l, al[12], 20L, 0x8d2a4c8aL);		l = HH(l, l1, l2, l3, al[5], 4L, 0xfffa3942L);		l3 = HH(l3, l, l1, l2, al[8], 11L, 0x8771f681L);		l2 = HH(l2, l3, l, l1, al[11], 16L, 0x6d9d6122L);		l1 = HH(l1, l2, l3, l, al[14], 23L, 0xfde5380cL);		l = HH(l, l1, l2, l3, al[1], 4L, 0xa4beea44L);		l3 = HH(l3, l, l1, l2, al[4], 11L, 0x4bdecfa9L);		l2 = HH(l2, l3, l, l1, al[7], 16L, 0xf6bb4b60L);		l1 = HH(l1, l2, l3, l, al[10], 23L, 0xbebfbc70L);		l = HH(l, l1, l2, l3, al[13], 4L, 0x289b7ec6L);		l3 = HH(l3, l, l1, l2, al[0], 11L, 0xeaa127faL);		l2 = HH(l2, l3, l, l1, al[3], 16L, 0xd4ef3085L);		l1 = HH(l1, l2, l3, l, al[6], 23L, 0x4881d05L);		l = HH(l, l1, l2, l3, al[9], 4L, 0xd9d4d039L);		l3 = HH(l3, l, l1, l2, al[12], 11L, 0xe6db99e5L);		l2 = HH(l2, l3, l, l1, al[15], 16L, 0x1fa27cf8L);		l1 = HH(l1, l2, l3, l, al[2], 23L, 0xc4ac5665L);		l = II(l, l1, l2, l3, al[0], 6L, 0xf4292244L);		l3 = II(l3, l, l1, l2, al[7], 10L, 0x432aff97L);		l2 = II(l2, l3, l, l1, al[14], 15L, 0xab9423a7L);		l1 = II(l1, l2, l3, l, al[5], 21L, 0xfc93a039L);		l = II(l, l1, l2, l3, al[12], 6L, 0x655b59c3L);		l3 = II(l3, l, l1, l2, al[3], 10L, 0x8f0ccc92L);		l2 = II(l2, l3, l, l1, al[10], 15L, 0xffeff47dL);		l1 = II(l1, l2, l3, l, al[1], 21L, 0x85845dd1L);		l = II(l, l1, l2, l3, al[8], 6L, 0x6fa87e4fL);		l3 = II(l3, l, l1, l2, al[15], 10L, 0xfe2ce6e0L);		l2 = II(l2, l3, l, l1, al[6], 15L, 0xa3014314L);		l1 = II(l1, l2, l3, l, al[13], 21L, 0x4e0811a1L);		l = II(l, l1, l2, l3, al[4], 6L, 0xf7537e82L);		l3 = II(l3, l, l1, l2, al[11], 10L, 0xbd3af235L);		l2 = II(l2, l3, l, l1, al[2], 15L, 0x2ad7d2bbL);		l1 = II(l1, l2, l3, l, al[9], 21L, 0xeb86d391L);		state[0] += l;		state[1] += l1;		state[2] += l2;		state[3] += l3;	}	private void Encode(byte abyte0[], long al[], int i) {		int j = 0;		for (int k = 0; k < i; k += 4) {			abyte0[k] = (byte) (int) (al[j] & 255L);			abyte0[k + 1] = (byte) (int) (al[j] >>> 8 & 255L);			abyte0[k + 2] = (byte) (int) (al[j] >>> 16 & 255L);			abyte0[k + 3] = (byte) (int) (al[j] >>> 24 & 255L);			j++;		}	}	private void Decode(long al[], byte abyte0[], int i) {		int j = 0;		for (int k = 0; k < i; k += 4) {			al[j] = b2iu(abyte0[k]) | b2iu(abyte0[k + 1]) << 8					| b2iu(abyte0[k + 2]) << 16 | b2iu(abyte0[k + 3]) << 24;			j++;		}	}	public static long b2iu(byte byte0) {		return byte0 >= 0 ? byte0 : byte0 & 0xff;	}	public static String byteHEX(byte byte0) {		char ac[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A',				'B', 'C', 'D', 'E', 'F' };		char ac1[] = new char[2];		ac1[0] = ac[byte0 >>> 4 & 0xf];		ac1[1] = ac[byte0 & 0xf];		String s = new String(ac1);		return s;	}	public static String getMD5Str(String string) {		return getInstance().getMD5ofStr(string);	}	public static void main(String args[]) {		MD5 md5 = new MD5();		System.out.println(md5.getMD5ofStr("stupid"));	}}