| 32 | } |
| 33 | |
| 34 | static void process_block() { |
| 35 | static const uint32_t k[64] = { |
| 36 | 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, |
| 37 | 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, |
| 38 | 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, |
| 39 | 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, |
| 40 | 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, |
| 41 | 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, |
| 42 | 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, |
| 43 | 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 |
| 44 | }; |
| 45 | |
| 46 | uint32_t a, b, c, d, e, f, g, h; |
| 47 | uint32_t w[64]; |
| 48 | int i; |
| 49 | |
| 50 | memcpy(w, sha256.block, 64); |
| 51 | for (i = 16; i < 64; i++) { |
| 52 | uint32_t s0 = ROR(w[i-15], 7) ^ ROR(w[i-15], 18) ^ (w[i-15] >> 3); |
| 53 | uint32_t s1 = ROR(w[i-2], 17) ^ ROR(w[i-2], 19) ^ (w[i-2] >> 10); |
| 54 | w[i] = w[i-16] + s0 + w[i-7] + s1; |
| 55 | } |
| 56 | |
| 57 | a = sha256.state[0]; |
| 58 | b = sha256.state[1]; |
| 59 | c = sha256.state[2]; |
| 60 | d = sha256.state[3]; |
| 61 | e = sha256.state[4]; |
| 62 | f = sha256.state[5]; |
| 63 | g = sha256.state[6]; |
| 64 | h = sha256.state[7]; |
| 65 | |
| 66 | for (i = 0; i < 64; i++) { |
| 67 | uint32_t s0 = ROR(a, 2) ^ ROR(a, 13) ^ ROR(a, 22); |
| 68 | uint32_t maj = (a & b) ^ (a & c) ^ (b & c); |
| 69 | uint32_t t2 = s0 + maj; |
| 70 | uint32_t s1 = ROR(e, 6) ^ ROR(e, 11) ^ ROR(e, 25); |
| 71 | uint32_t ch = (e & f) ^ (~e & g); |
| 72 | uint32_t t1 = h + s1 + ch + k[i] + w[i]; |
| 73 | |
| 74 | h = g; |
| 75 | g = f; |
| 76 | f = e; |
| 77 | e = d + t1; |
| 78 | d = c; |
| 79 | c = b; |
| 80 | b = a; |
| 81 | a = t1 + t2; |
| 82 | } |
| 83 | |
| 84 | sha256.state[0] += a; |
| 85 | sha256.state[1] += b; |
| 86 | sha256.state[2] += c; |
| 87 | sha256.state[3] += d; |
| 88 | sha256.state[4] += e; |
| 89 | sha256.state[5] += f; |
| 90 | sha256.state[6] += g; |
| 91 | sha256.state[7] += h; |