+++ /dev/null
-/*
- SHA-1 in C
-
- By Steve Reid <steve@edmweb.com>, with small changes to make it
- fit into mutt by Thomas Roessler <roessler@does-not-exist.org>.
-
- 100% Public Domain.
-
- Test Vectors (from FIPS PUB 180-1)
- "abc"
- A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
- "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
- 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
- A million repetitions of "a"
- 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
-*/
-
-#include <lib-lib/lib-lib.h>
-#define SHA1HANDSOFF
-
-#include "sha1.h"
-
-#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
-
-/* blk0() and blk() perform the initial expand. */
-/* I got the idea of expanding during the round function from SSLeay */
-#ifdef WORDS_BIGENDIAN
-# define blk0(i) block->l[i]
-#else
-# define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
- |(rol(block->l[i],8)&0x00FF00FF))
-#endif
-
-#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
- ^block->l[(i+2)&15]^block->l[i&15],1))
-
-/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
-#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
-#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
-#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
-#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
-#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
-
-
-/* Hash a single 512-bit block. This is the core of the algorithm. */
-
-void SHA1Transform (uint32_t state[5], const unsigned char buffer[64])
-{
- uint32_t a, b, c, d, e;
- typedef union {
- unsigned char c[64];
- uint32_t l[16];
- } CHAR64LONG16;
-
-#ifdef SHA1HANDSOFF
- CHAR64LONG16 block[1]; /* use array to appear as a pointer */
-
- memcpy (block, buffer, 64);
-#else
- /* The following had better never be used because it causes the
- * pointer-to-const buffer to be cast into a pointer to non-const.
- * And the result is written through. I threw a "const" in, hoping
- * this will cause a diagnostic.
- */
- CHAR64LONG16 *block = (const CHAR64LONG16 *) buffer;
-#endif
- /* Copy context->state[] to working vars */
- a = state[0];
- b = state[1];
- c = state[2];
- d = state[3];
- e = state[4];
- /* 4 rounds of 20 operations each. Loop unrolled. */
- R0 (a, b, c, d, e, 0);
- R0 (e, a, b, c, d, 1);
- R0 (d, e, a, b, c, 2);
- R0 (c, d, e, a, b, 3);
- R0 (b, c, d, e, a, 4);
- R0 (a, b, c, d, e, 5);
- R0 (e, a, b, c, d, 6);
- R0 (d, e, a, b, c, 7);
- R0 (c, d, e, a, b, 8);
- R0 (b, c, d, e, a, 9);
- R0 (a, b, c, d, e, 10);
- R0 (e, a, b, c, d, 11);
- R0 (d, e, a, b, c, 12);
- R0 (c, d, e, a, b, 13);
- R0 (b, c, d, e, a, 14);
- R0 (a, b, c, d, e, 15);
- R1 (e, a, b, c, d, 16);
- R1 (d, e, a, b, c, 17);
- R1 (c, d, e, a, b, 18);
- R1 (b, c, d, e, a, 19);
- R2 (a, b, c, d, e, 20);
- R2 (e, a, b, c, d, 21);
- R2 (d, e, a, b, c, 22);
- R2 (c, d, e, a, b, 23);
- R2 (b, c, d, e, a, 24);
- R2 (a, b, c, d, e, 25);
- R2 (e, a, b, c, d, 26);
- R2 (d, e, a, b, c, 27);
- R2 (c, d, e, a, b, 28);
- R2 (b, c, d, e, a, 29);
- R2 (a, b, c, d, e, 30);
- R2 (e, a, b, c, d, 31);
- R2 (d, e, a, b, c, 32);
- R2 (c, d, e, a, b, 33);
- R2 (b, c, d, e, a, 34);
- R2 (a, b, c, d, e, 35);
- R2 (e, a, b, c, d, 36);
- R2 (d, e, a, b, c, 37);
- R2 (c, d, e, a, b, 38);
- R2 (b, c, d, e, a, 39);
- R3 (a, b, c, d, e, 40);
- R3 (e, a, b, c, d, 41);
- R3 (d, e, a, b, c, 42);
- R3 (c, d, e, a, b, 43);
- R3 (b, c, d, e, a, 44);
- R3 (a, b, c, d, e, 45);
- R3 (e, a, b, c, d, 46);
- R3 (d, e, a, b, c, 47);
- R3 (c, d, e, a, b, 48);
- R3 (b, c, d, e, a, 49);
- R3 (a, b, c, d, e, 50);
- R3 (e, a, b, c, d, 51);
- R3 (d, e, a, b, c, 52);
- R3 (c, d, e, a, b, 53);
- R3 (b, c, d, e, a, 54);
- R3 (a, b, c, d, e, 55);
- R3 (e, a, b, c, d, 56);
- R3 (d, e, a, b, c, 57);
- R3 (c, d, e, a, b, 58);
- R3 (b, c, d, e, a, 59);
- R4 (a, b, c, d, e, 60);
- R4 (e, a, b, c, d, 61);
- R4 (d, e, a, b, c, 62);
- R4 (c, d, e, a, b, 63);
- R4 (b, c, d, e, a, 64);
- R4 (a, b, c, d, e, 65);
- R4 (e, a, b, c, d, 66);
- R4 (d, e, a, b, c, 67);
- R4 (c, d, e, a, b, 68);
- R4 (b, c, d, e, a, 69);
- R4 (a, b, c, d, e, 70);
- R4 (e, a, b, c, d, 71);
- R4 (d, e, a, b, c, 72);
- R4 (c, d, e, a, b, 73);
- R4 (b, c, d, e, a, 74);
- R4 (a, b, c, d, e, 75);
- R4 (e, a, b, c, d, 76);
- R4 (d, e, a, b, c, 77);
- R4 (c, d, e, a, b, 78);
- R4 (b, c, d, e, a, 79);
- /* Add the working vars back into context.state[] */
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
- state[4] += e;
- /* Wipe variables */
- a = b = c = d = e = 0;
-#ifdef SHA1HANDSOFF
- memset (block, '\0', sizeof (block));
-#endif
-}
-
-
-/* SHA1Init - Initialize new context */
-
-void SHA1Init (SHA1_CTX * context)
-{
- /* SHA1 initialization constants */
- context->state[0] = 0x67452301;
- context->state[1] = 0xEFCDAB89;
- context->state[2] = 0x98BADCFE;
- context->state[3] = 0x10325476;
- context->state[4] = 0xC3D2E1F0;
- context->count[0] = context->count[1] = 0;
-}
-
-
-/* Run your data through this. */
-
-void SHA1Update (SHA1_CTX * context, const unsigned char *data, uint32_t len)
-{
- uint32_t i;
- uint32_t j;
-
- j = context->count[0];
- if ((context->count[0] += len << 3) < j)
- context->count[1]++;
- context->count[1] += (len >> 29);
- j = (j >> 3) & 63;
- if ((j + len) > 63) {
- memcpy (&context->buffer[j], data, (i = 64 - j));
- SHA1Transform (context->state, context->buffer);
- for (; i + 63 < len; i += 64) {
- SHA1Transform (context->state, &data[i]);
- }
- j = 0;
- }
- else
- i = 0;
- memcpy (&context->buffer[j], &data[i], len - i);
-}
-
-
-/* Add padding and return the message digest. */
-
-void SHA1Final (unsigned char digest[20], SHA1_CTX * context)
-{
- unsigned i;
- unsigned char finalcount[8];
- unsigned char c;
-
- for (i = 0; i < 8; i++) {
- finalcount[i] = (unsigned char) ((context->count[(i >= 4 ? 0 : 1)]
- >> ((3 - (i & 3)) * 8)) & 255); /* Endian independent */
- }
- c = 0200;
- SHA1Update (context, &c, 1);
- while ((context->count[0] & 504) != 448) {
- c = 0000;
- SHA1Update (context, &c, 1);
- }
- SHA1Update (context, finalcount, 8); /* Should cause a SHA1Transform() */
- for (i = 0; i < 20; i++) {
- digest[i] = (unsigned char)
- ((context->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255);
- }
- /* Wipe variables */
- memset (context, '\0', sizeof (*context));
- memset (&finalcount, '\0', sizeof (finalcount));
-}