From d5a727a062e4d727491f4e7f047269d60a93a8cf Mon Sep 17 00:00:00 2001
From: Mitya Selivanov <automainint@guattari.tech>
Date: Sun, 17 Nov 2024 05:24:04 +0100
Subject: Remove lots of dependencies

---
 kit/sha256.c | 151 -----------------------------------------------------------
 1 file changed, 151 deletions(-)
 delete mode 100644 kit/sha256.c

(limited to 'kit/sha256.c')

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
-- 
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