ext/Digest-SHA/src/sha64bit.c

   1 #ifdef SHA_384_512
   2
   3 #undef sha_384_512
   4 #undef W64
   5 #undef strto64
   6 #undef sha512
   7 #undef H0384
   8 #undef H0512
   9
  10 #define sha_384_512     1
  11
  12 #define W64             SHA64           /* useful abbreviations */
  13 #define C64             SHA64_CONST
  14 #define SR64            SHA64_SHR
  15 #define SL64            SHA64_SHL
  16
  17 #define ROTRQ(x, n)     (SR64(x, n) | SL64(x, 64-(n)))
  18 #define SIGMAQ0(x)      (ROTRQ(x, 28) ^ ROTRQ(x, 34) ^ ROTRQ(x, 39))
  19 #define SIGMAQ1(x)      (ROTRQ(x, 14) ^ ROTRQ(x, 18) ^ ROTRQ(x, 41))
  20 #define sigmaQ0(x)      (ROTRQ(x,  1) ^ ROTRQ(x,  8) ^ SR64(x,  7))
  21 #define sigmaQ1(x)      (ROTRQ(x, 19) ^ ROTRQ(x, 61) ^ SR64(x,  6))
  22
  23 static W64 K512[80] =                   /* SHA-384/512 constants */
  24 {
  25 C64(0x428a2f98d728ae22), C64(0x7137449123ef65cd), C64(0xb5c0fbcfec4d3b2f),
  26 C64(0xe9b5dba58189dbbc), C64(0x3956c25bf348b538), C64(0x59f111f1b605d019),
  27 C64(0x923f82a4af194f9b), C64(0xab1c5ed5da6d8118), C64(0xd807aa98a3030242),
  28 C64(0x12835b0145706fbe), C64(0x243185be4ee4b28c), C64(0x550c7dc3d5ffb4e2),
  29 C64(0x72be5d74f27b896f), C64(0x80deb1fe3b1696b1), C64(0x9bdc06a725c71235),
  30 C64(0xc19bf174cf692694), C64(0xe49b69c19ef14ad2), C64(0xefbe4786384f25e3),
  31 C64(0x0fc19dc68b8cd5b5), C64(0x240ca1cc77ac9c65), C64(0x2de92c6f592b0275),
  32 C64(0x4a7484aa6ea6e483), C64(0x5cb0a9dcbd41fbd4), C64(0x76f988da831153b5),
  33 C64(0x983e5152ee66dfab), C64(0xa831c66d2db43210), C64(0xb00327c898fb213f),
  34 C64(0xbf597fc7beef0ee4), C64(0xc6e00bf33da88fc2), C64(0xd5a79147930aa725),
  35 C64(0x06ca6351e003826f), C64(0x142929670a0e6e70), C64(0x27b70a8546d22ffc),
  36 C64(0x2e1b21385c26c926), C64(0x4d2c6dfc5ac42aed), C64(0x53380d139d95b3df),
  37 C64(0x650a73548baf63de), C64(0x766a0abb3c77b2a8), C64(0x81c2c92e47edaee6),
  38 C64(0x92722c851482353b), C64(0xa2bfe8a14cf10364), C64(0xa81a664bbc423001),
  39 C64(0xc24b8b70d0f89791), C64(0xc76c51a30654be30), C64(0xd192e819d6ef5218),
  40 C64(0xd69906245565a910), C64(0xf40e35855771202a), C64(0x106aa07032bbd1b8),
  41 C64(0x19a4c116b8d2d0c8), C64(0x1e376c085141ab53), C64(0x2748774cdf8eeb99),
  42 C64(0x34b0bcb5e19b48a8), C64(0x391c0cb3c5c95a63), C64(0x4ed8aa4ae3418acb),
  43 C64(0x5b9cca4f7763e373), C64(0x682e6ff3d6b2b8a3), C64(0x748f82ee5defb2fc),
  44 C64(0x78a5636f43172f60), C64(0x84c87814a1f0ab72), C64(0x8cc702081a6439ec),
  45 C64(0x90befffa23631e28), C64(0xa4506cebde82bde9), C64(0xbef9a3f7b2c67915),
  46 C64(0xc67178f2e372532b), C64(0xca273eceea26619c), C64(0xd186b8c721c0c207),
  47 C64(0xeada7dd6cde0eb1e), C64(0xf57d4f7fee6ed178), C64(0x06f067aa72176fba),
  48 C64(0x0a637dc5a2c898a6), C64(0x113f9804bef90dae), C64(0x1b710b35131c471b),
  49 C64(0x28db77f523047d84), C64(0x32caab7b40c72493), C64(0x3c9ebe0a15c9bebc),
  50 C64(0x431d67c49c100d4c), C64(0x4cc5d4becb3e42b6), C64(0x597f299cfc657e2a),
  51 C64(0x5fcb6fab3ad6faec), C64(0x6c44198c4a475817)
  52 };
  53
  54 static W64 H0384[8] =           /* SHA-384 initial hash value */
  55 {
  56 C64(0xcbbb9d5dc1059ed8), C64(0x629a292a367cd507), C64(0x9159015a3070dd17),
  57 C64(0x152fecd8f70e5939), C64(0x67332667ffc00b31), C64(0x8eb44a8768581511),
  58 C64(0xdb0c2e0d64f98fa7), C64(0x47b5481dbefa4fa4)
  59 };
  60
  61 static W64 H0512[8] =           /* SHA-512 initial hash value */
  62 {
  63 C64(0x6a09e667f3bcc908), C64(0xbb67ae8584caa73b), C64(0x3c6ef372fe94f82b),
  64 C64(0xa54ff53a5f1d36f1), C64(0x510e527fade682d1), C64(0x9b05688c2b3e6c1f),
  65 C64(0x1f83d9abfb41bd6b), C64(0x5be0cd19137e2179)
  66 };
  67
  68 /* strto64: converts hex string to a 64-bit word */
  69 static W64 strto64(char *s)
  70 {
  71         char str[2] = {0, 0};
  72         W64 u = C64(0);
  73
  74         while (isxdigit(str[0] = *s++))
  75                 u = (u << 4) + strtoul(str, NULL, 16);
  76         return(u);
  77 }
  78
  79 static void sha512(SHA *s, unsigned char *block) /* SHA-384/512 transform */
  80 {
  81         W64 a, b, c, d, e, f, g, h, T1, T2;
  82         SHA_STO_CLASS W64 W[80];
  83         W64 *H = (W64 *) s->H;
  84         int t;
  85
  86         SHA64_SCHED(W, block);
  87         for (t = 16; t < 80; t++)
  88                 W[t] = sigmaQ1(W[t-2]) + W[t-7] + sigmaQ0(W[t-15]) + W[t-16];
  89         a = H[0]; b = H[1]; c = H[2]; d = H[3];
  90         e = H[4]; f = H[5]; g = H[6]; h = H[7];
  91         for (t = 0; t < 80; t++) {
  92                 T1 = h + SIGMAQ1(e) + Ch(e, f, g) + K512[t] + W[t];
  93                 T2 = SIGMAQ0(a) + Ma(a, b, c);
  94                 h = g; g = f; f = e; e = d + T1;
  95                 d = c; c = b; b = a; a = T1 + T2;
  96         }
  97         H[0] += a; H[1] += b; H[2] += c; H[3] += d;
  98         H[4] += e; H[5] += f; H[6] += g; H[7] += h;
  99 }
 100
 101 #endif  /* #ifdef SHA_384_512 */