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Diffstat (limited to 'sqmail-4.3.07/src/sha256.c')
-rw-r--r--sqmail-4.3.07/src/sha256.c167
1 files changed, 0 insertions, 167 deletions
diff --git a/sqmail-4.3.07/src/sha256.c b/sqmail-4.3.07/src/sha256.c
deleted file mode 100644
index e5ba5dd..0000000
--- a/sqmail-4.3.07/src/sha256.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * SHA256
- *
- * The author (Brad Conte) has released this file "into the public domain free
- * of any restrictions". This file is unchanged except for some style
- * clean-up and argument order for sha256_hash (feh).
- */
-
-#include <stdint.h>
-#include <string.h>
-#include "sha256.h"
-
-// DBL_INT_ADD treats two unsigned ints a and b as one 64-bit integer and adds c to it
-
-#define DBL_INT_ADD(a,b,c) if (a > 0xffffffff - (c)) ++b; a += c;
-#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))
-
-uint32_t 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 sha256_transform(sha256_ctx *ctx, uint8_t *data)
-{
- uint32_t 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] = (data[j] << 24) | (data[j+1] << 16) | (data[j+2] << 8) | (data[j+3]);
- for (; i < 64; ++i)
- m[i] = SIG1(m[i-2]) + m[i-7] + SIG0(m[i-15]) + m[i-16];
-
- a = ctx->state[0];
- b = ctx->state[1];
- c = ctx->state[2];
- d = ctx->state[3];
- e = ctx->state[4];
- f = ctx->state[5];
- g = ctx->state[6];
- h = ctx->state[7];
-
- for (i = 0; i < 64; ++i) {
- t1 = h + EP1(e) + CH(e,f,g) + 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;
- }
-
- ctx->state[0] += a;
- ctx->state[1] += b;
- ctx->state[2] += c;
- ctx->state[3] += d;
- ctx->state[4] += e;
- ctx->state[5] += f;
- ctx->state[6] += g;
- ctx->state[7] += h;
-}
-
-static void sha256_init(sha256_ctx *ctx)
-{
- ctx->datalen = 0;
- ctx->bitlen[0] = 0;
- ctx->bitlen[1] = 0;
- ctx->state[0] = 0x6a09e667;
- ctx->state[1] = 0xbb67ae85;
- ctx->state[2] = 0x3c6ef372;
- ctx->state[3] = 0xa54ff53a;
- ctx->state[4] = 0x510e527f;
- ctx->state[5] = 0x9b05688c;
- ctx->state[6] = 0x1f83d9ab;
- ctx->state[7] = 0x5be0cd19;
-}
-
-static void sha256_update(sha256_ctx *ctx, uint8_t *data, uint32_t len)
-{
- uint32_t i;
-
- for (i=0; i < len; ++i) {
- ctx->data[ctx->datalen] = data[i];
- ctx->datalen++;
- if (ctx->datalen == 64) {
- sha256_transform(ctx,ctx->data);
- DBL_INT_ADD(ctx->bitlen[0],ctx->bitlen[1],512);
- ctx->datalen = 0;
- }
- }
-}
-
-static void sha256_final(uint8_t *hash,sha256_ctx *ctx)
-{
- uint32_t i;
-
- i = ctx->datalen;
-
-// Pad whatever data is left in the buffer.
-
- if (ctx->datalen < 56) {
- ctx->data[i++] = 0x80;
- while (i < 56)
- ctx->data[i++] = 0x00;
- }
- else {
- ctx->data[i++] = 0x80;
- while (i < 64)
- ctx->data[i++] = 0x00;
- sha256_transform(ctx,ctx->data);
- memset(ctx->data,0,56);
- }
-
-// Append to the padding the total message's length in bits and transform.
-
- DBL_INT_ADD(ctx->bitlen[0],ctx->bitlen[1],ctx->datalen * 8);
- ctx->data[63] = ctx->bitlen[0];
- ctx->data[62] = ctx->bitlen[0] >> 8;
- ctx->data[61] = ctx->bitlen[0] >> 16;
- ctx->data[60] = ctx->bitlen[0] >> 24;
- ctx->data[59] = ctx->bitlen[1];
- ctx->data[58] = ctx->bitlen[1] >> 8;
- ctx->data[57] = ctx->bitlen[1] >> 16;
- ctx->data[56] = ctx->bitlen[1] >> 24;
- sha256_transform(ctx,ctx->data);
-
-// Since this implementation uses little endian byte ordering and SHA uses
-// big endian, reverse all the bytes when copying the final state to the output hash.
-
- for (i = 0; i < 4; ++i) {
- hash[i] = (ctx->state[0] >> (24-i*8)) & 0x000000ff;
- hash[i+4] = (ctx->state[1] >> (24-i*8)) & 0x000000ff;
- hash[i+8] = (ctx->state[2] >> (24-i*8)) & 0x000000ff;
- hash[i+12] = (ctx->state[3] >> (24-i*8)) & 0x000000ff;
- hash[i+16] = (ctx->state[4] >> (24-i*8)) & 0x000000ff;
- hash[i+20] = (ctx->state[5] >> (24-i*8)) & 0x000000ff;
- hash[i+24] = (ctx->state[6] >> (24-i*8)) & 0x000000ff;
- hash[i+28] = (ctx->state[7] >> (24-i*8)) & 0x000000ff;
- }
-}
-
-extern void sha256_hash(char *hash,const char *data,size_t len)
-{
- sha256_ctx ctx;
- sha256_init(&ctx);
- sha256_update(&ctx,(uint8_t *)data,(int)len);
- sha256_final((uint8_t *)hash,&ctx);
-}