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authorMitya Selivanov <automainint@guattari.tech>2024-11-17 05:24:04 +0100
committerMitya Selivanov <automainint@guattari.tech>2024-11-17 05:24:04 +0100
commitd5a727a062e4d727491f4e7f047269d60a93a8cf (patch)
tree565aec155ab056f1bef8ddc7dc78d52e65aa76b7 /kit/sha256.c
parent4ba961dcbf60f7c12f53f46baa261757e15d5931 (diff)
downloadsaw-d5a727a062e4d727491f4e7f047269d60a93a8cf.zip
Remove lots of dependencies
Diffstat (limited to 'kit/sha256.c')
-rw-r--r--kit/sha256.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/kit/sha256.c b/kit/sha256.c
deleted file mode 100644
index 3abe972..0000000
--- a/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