예제 #1
0
파일: MD5.java 프로젝트: dalinhuang/zctable
  /*
     md5Transform��MD5���ı任������md5Update���ã�block�Ƿֿ��ԭʼ�ֽ�
  */
  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);

    /* Round 1 */
    a = FF(a, b, c, d, x[0], S11, 0xd76aa478L); /* 1 */
    d = FF(d, a, b, c, x[1], S12, 0xe8c7b756L); /* 2 */
    c = FF(c, d, a, b, x[2], S13, 0x242070dbL); /* 3 */
    b = FF(b, c, d, a, x[3], S14, 0xc1bdceeeL); /* 4 */
    a = FF(a, b, c, d, x[4], S11, 0xf57c0fafL); /* 5 */
    d = FF(d, a, b, c, x[5], S12, 0x4787c62aL); /* 6 */
    c = FF(c, d, a, b, x[6], S13, 0xa8304613L); /* 7 */
    b = FF(b, c, d, a, x[7], S14, 0xfd469501L); /* 8 */
    a = FF(a, b, c, d, x[8], S11, 0x698098d8L); /* 9 */
    d = FF(d, a, b, c, x[9], S12, 0x8b44f7afL); /* 10 */
    c = FF(c, d, a, b, x[10], S13, 0xffff5bb1L); /* 11 */
    b = FF(b, c, d, a, x[11], S14, 0x895cd7beL); /* 12 */
    a = FF(a, b, c, d, x[12], S11, 0x6b901122L); /* 13 */
    d = FF(d, a, b, c, x[13], S12, 0xfd987193L); /* 14 */
    c = FF(c, d, a, b, x[14], S13, 0xa679438eL); /* 15 */
    b = FF(b, c, d, a, x[15], S14, 0x49b40821L); /* 16 */

    /* Round 2 */
    a = GG(a, b, c, d, x[1], S21, 0xf61e2562L); /* 17 */
    d = GG(d, a, b, c, x[6], S22, 0xc040b340L); /* 18 */
    c = GG(c, d, a, b, x[11], S23, 0x265e5a51L); /* 19 */
    b = GG(b, c, d, a, x[0], S24, 0xe9b6c7aaL); /* 20 */
    a = GG(a, b, c, d, x[5], S21, 0xd62f105dL); /* 21 */
    d = GG(d, a, b, c, x[10], S22, 0x2441453L); /* 22 */
    c = GG(c, d, a, b, x[15], S23, 0xd8a1e681L); /* 23 */
    b = GG(b, c, d, a, x[4], S24, 0xe7d3fbc8L); /* 24 */
    a = GG(a, b, c, d, x[9], S21, 0x21e1cde6L); /* 25 */
    d = GG(d, a, b, c, x[14], S22, 0xc33707d6L); /* 26 */
    c = GG(c, d, a, b, x[3], S23, 0xf4d50d87L); /* 27 */
    b = GG(b, c, d, a, x[8], S24, 0x455a14edL); /* 28 */
    a = GG(a, b, c, d, x[13], S21, 0xa9e3e905L); /* 29 */
    d = GG(d, a, b, c, x[2], S22, 0xfcefa3f8L); /* 30 */
    c = GG(c, d, a, b, x[7], S23, 0x676f02d9L); /* 31 */
    b = GG(b, c, d, a, x[12], S24, 0x8d2a4c8aL); /* 32 */

    /* Round 3 */
    a = HH(a, b, c, d, x[5], S31, 0xfffa3942L); /* 33 */
    d = HH(d, a, b, c, x[8], S32, 0x8771f681L); /* 34 */
    c = HH(c, d, a, b, x[11], S33, 0x6d9d6122L); /* 35 */
    b = HH(b, c, d, a, x[14], S34, 0xfde5380cL); /* 36 */
    a = HH(a, b, c, d, x[1], S31, 0xa4beea44L); /* 37 */
    d = HH(d, a, b, c, x[4], S32, 0x4bdecfa9L); /* 38 */
    c = HH(c, d, a, b, x[7], S33, 0xf6bb4b60L); /* 39 */
    b = HH(b, c, d, a, x[10], S34, 0xbebfbc70L); /* 40 */
    a = HH(a, b, c, d, x[13], S31, 0x289b7ec6L); /* 41 */
    d = HH(d, a, b, c, x[0], S32, 0xeaa127faL); /* 42 */
    c = HH(c, d, a, b, x[3], S33, 0xd4ef3085L); /* 43 */
    b = HH(b, c, d, a, x[6], S34, 0x4881d05L); /* 44 */
    a = HH(a, b, c, d, x[9], S31, 0xd9d4d039L); /* 45 */
    d = HH(d, a, b, c, x[12], S32, 0xe6db99e5L); /* 46 */
    c = HH(c, d, a, b, x[15], S33, 0x1fa27cf8L); /* 47 */
    b = HH(b, c, d, a, x[2], S34, 0xc4ac5665L); /* 48 */

    /* Round 4 */
    a = II(a, b, c, d, x[0], S41, 0xf4292244L); /* 49 */
    d = II(d, a, b, c, x[7], S42, 0x432aff97L); /* 50 */
    c = II(c, d, a, b, x[14], S43, 0xab9423a7L); /* 51 */
    b = II(b, c, d, a, x[5], S44, 0xfc93a039L); /* 52 */
    a = II(a, b, c, d, x[12], S41, 0x655b59c3L); /* 53 */
    d = II(d, a, b, c, x[3], S42, 0x8f0ccc92L); /* 54 */
    c = II(c, d, a, b, x[10], S43, 0xffeff47dL); /* 55 */
    b = II(b, c, d, a, x[1], S44, 0x85845dd1L); /* 56 */
    a = II(a, b, c, d, x[8], S41, 0x6fa87e4fL); /* 57 */
    d = II(d, a, b, c, x[15], S42, 0xfe2ce6e0L); /* 58 */
    c = II(c, d, a, b, x[6], S43, 0xa3014314L); /* 59 */
    b = II(b, c, d, a, x[13], S44, 0x4e0811a1L); /* 60 */
    a = II(a, b, c, d, x[4], S41, 0xf7537e82L); /* 61 */
    d = II(d, a, b, c, x[11], S42, 0xbd3af235L); /* 62 */
    c = II(c, d, a, b, x[2], S43, 0x2ad7d2bbL); /* 63 */
    b = II(b, c, d, a, x[9], S44, 0xeb86d391L); /* 64 */

    state[0] += a;
    state[1] += b;
    state[2] += c;
    state[3] += d;
  }