From 2d6c8fec45b23a8a28668ecf3ef281139ab778a7 Mon Sep 17 00:00:00 2001 From: Mitya Selivanov Date: Fri, 29 Dec 2023 06:21:33 +0100 Subject: refactor dependencies; include dependencies source code --- source/kit/sha256.c | 151 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 151 insertions(+) create mode 100644 source/kit/sha256.c (limited to 'source/kit/sha256.c') diff --git a/source/kit/sha256.c b/source/kit/sha256.c new file mode 100644 index 0000000..3abe972 --- /dev/null +++ b/source/kit/sha256.c @@ -0,0 +1,151 @@ +#include "sha256.h" + +#include +#include + +#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 -- cgit v1.2.3