diff options
Diffstat (limited to 'source/kit/sha256.c')
-rw-r--r-- | source/kit/sha256.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/source/kit/sha256.c b/source/kit/sha256.c deleted file mode 100644 index 3abe972..0000000 --- a/source/kit/sha256.c +++ /dev/null @@ -1,151 +0,0 @@ -#include "sha256.h" - -#include <assert.h> -#include <string.h> - -#define ROTLEFT(a, b) (((a) << (b)) | ((a) >> (32 - (b)))) -#define ROTRIGHT(a, b) (((a) >> (b)) | ((a) << (32 - (b)))) - -#define CH(x, y, z) (((x) & (y)) ^ (~(x) & (z))) -#define MAJ(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) -#define EP0(x) (ROTRIGHT(x, 2) ^ ROTRIGHT(x, 13) ^ ROTRIGHT(x, 22)) -#define EP1(x) (ROTRIGHT(x, 6) ^ ROTRIGHT(x, 11) ^ ROTRIGHT(x, 25)) -#define SIG0(x) (ROTRIGHT(x, 7) ^ ROTRIGHT(x, 18) ^ ((x) >> 3)) -#define SIG1(x) (ROTRIGHT(x, 17) ^ ROTRIGHT(x, 19) ^ ((x) >> 10)) - -static u32 kit_sha256_k[64] = { - 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, - 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, - 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, - 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, - 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, - 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, - 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, - 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, - 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, - 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, - 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, - 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, - 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 -}; - -static void kit_sha256_transform(u32 *state, u8 *data) { - assert(state != NULL); - assert(data != NULL); - - u32 a, b, c, d, e, f, g, h, i, j, t1, t2, m[64]; - - for (i = 0, j = 0; i < 16; ++i, j += 4) - m[i] = ((u32) data[j] << 24) | ((u32) data[j + 1] << 16) | - ((u32) data[j + 2] << 8) | ((u32) data[j + 3]); - for (; i < 64; ++i) - m[i] = SIG1(m[i - 2]) + m[i - 7] + SIG0(m[i - 15]) + m[i - 16]; - - a = state[0]; - b = state[1]; - c = state[2]; - d = state[3]; - e = state[4]; - f = state[5]; - g = state[6]; - h = state[7]; - - for (i = 0; i < 64; ++i) { - t1 = h + EP1(e) + CH(e, f, g) + kit_sha256_k[i] + m[i]; - t2 = EP0(a) + MAJ(a, b, c); - h = g; - g = f; - f = e; - e = d + t1; - d = c; - c = b; - b = a; - a = t1 + t2; - } - - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - state[4] += e; - state[5] += f; - state[6] += g; - state[7] += h; -} - -kit_sha256_hash_t kit_sha256(i64 in_size, u8 *in_data) { - assert(in_size >= 0); - assert(in_data != NULL); - - u32 state[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, - 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 }; - - u8 data[64]; - - i64 i; - i64 datalen = 0; - u64 bitlen = 0; - - if (in_data != NULL) - for (i = 0; i < in_size; ++i) { - data[datalen] = in_data[i]; - datalen++; - - if (datalen != 64) - continue; - - kit_sha256_transform(state, data); - bitlen += 512; - datalen = 0; - } - - i = datalen; - - if (datalen < 56) { - data[i++] = 0x80; - while (i < 56) data[i++] = 0x00; - } else { - data[i++] = 0x80; - while (i < 64) data[i++] = 0x00; - - kit_sha256_transform(state, data); - memset(data, 0, 56); - } - - bitlen += datalen * 8; - data[63] = bitlen; - data[62] = bitlen >> 8; - data[61] = bitlen >> 16; - data[60] = bitlen >> 24; - data[59] = bitlen >> 32; - data[58] = bitlen >> 40; - data[57] = bitlen >> 48; - data[56] = bitlen >> 56; - - kit_sha256_transform(state, data); - - kit_sha256_hash_t hash; - memset(&hash, 0, sizeof hash); - - for (i = 0; i < 4; ++i) { - hash.v[i] = (state[0] >> (24 - i * 8)) & 0xff; - hash.v[i + 4] = (state[1] >> (24 - i * 8)) & 0xff; - hash.v[i + 8] = (state[2] >> (24 - i * 8)) & 0xff; - hash.v[i + 12] = (state[3] >> (24 - i * 8)) & 0xff; - hash.v[i + 16] = (state[4] >> (24 - i * 8)) & 0xff; - hash.v[i + 20] = (state[5] >> (24 - i * 8)) & 0xff; - hash.v[i + 24] = (state[6] >> (24 - i * 8)) & 0xff; - hash.v[i + 28] = (state[7] >> (24 - i * 8)) & 0xff; - } - - return hash; -} - -#undef ROTLEFT -#undef ROTRIGHT -#undef CH -#undef MAJ -#undef EP0 -#undef EP1 -#undef SIG0 -#undef SIG1 |