mirror of
https://github.com/VCMP-SqMod/SqMod.git
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326 lines
9.7 KiB
C
326 lines
9.7 KiB
C
/****************************************************************************
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Copyright (C) 2012 Monty Program AB
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not see <http://www.gnu.org/licenses>
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or write to the Free Software Foundation, Inc.,
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51 Franklin St., Fifth Floor, Boston, MA 02110, USA
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*****************************************************************************/
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/* This code came from the PHP project, initially written by
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Stefan Esser */
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#include "my_global.h"
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#include "string.h"
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/* This code is heavily based on the PHP md5 implementation */
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#include "sha1.h"
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static void SHA1Transform(uint32[5], const unsigned char[64]);
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static void SHA1Encode(unsigned char *, uint32 *, unsigned int);
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static void SHA1Decode(uint32 *, const unsigned char *, unsigned int);
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static unsigned char PADDING[64] =
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{
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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/* F, G, H and I are basic SHA1 functions.
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*/
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#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
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#define G(x, y, z) ((x) ^ (y) ^ (z))
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#define H(x, y, z) (((x) & (y)) | ((z) & ((x) | (y))))
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#define I(x, y, z) ((x) ^ (y) ^ (z))
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/* ROTATE_LEFT rotates x left n bits.
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*/
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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/* W[i]
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*/
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#define W(i) ( tmp=x[(i-3)&15]^x[(i-8)&15]^x[(i-14)&15]^x[i&15], \
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(x[i&15]=ROTATE_LEFT(tmp, 1)) )
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/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
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*/
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#define FF(a, b, c, d, e, w) { \
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(e) += F ((b), (c), (d)) + (w) + (uint32)(0x5A827999); \
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(e) += ROTATE_LEFT ((a), 5); \
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(b) = ROTATE_LEFT((b), 30); \
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}
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#define GG(a, b, c, d, e, w) { \
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(e) += G ((b), (c), (d)) + (w) + (uint32)(0x6ED9EBA1); \
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(e) += ROTATE_LEFT ((a), 5); \
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(b) = ROTATE_LEFT((b), 30); \
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}
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#define HH(a, b, c, d, e, w) { \
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(e) += H ((b), (c), (d)) + (w) + (uint32)(0x8F1BBCDC); \
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(e) += ROTATE_LEFT ((a), 5); \
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(b) = ROTATE_LEFT((b), 30); \
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}
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#define II(a, b, c, d, e, w) { \
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(e) += I ((b), (c), (d)) + (w) + (uint32)(0xCA62C1D6); \
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(e) += ROTATE_LEFT ((a), 5); \
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(b) = ROTATE_LEFT((b), 30); \
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}
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/* {{{ MYSQL_SHA1Init
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* SHA1 initialization. Begins an SHA1 operation, writing a new context.
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*/
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void MYSQL_SHA1Init(MYSQL_SHA1_CTX * context)
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{
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context->count[0] = context->count[1] = 0;
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/* Load magic initialization constants.
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*/
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context->state[0] = 0x67452301;
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context->state[1] = 0xefcdab89;
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context->state[2] = 0x98badcfe;
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context->state[3] = 0x10325476;
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context->state[4] = 0xc3d2e1f0;
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}
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/* }}} */
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/* {{{ MYSQL_SHA1Update
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SHA1 block update operation. Continues an SHA1 message-digest
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operation, processing another message block, and updating the
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context.
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*/
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void MYSQL_SHA1Update(MYSQL_SHA1_CTX * context, const unsigned char *input,
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size_t inputLen)
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{
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unsigned int i, index, partLen;
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/* Compute number of bytes mod 64 */
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index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
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/* Update number of bits */
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if ((context->count[0] += ((uint32) inputLen << 3))
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< ((uint32) inputLen << 3))
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context->count[1]++;
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context->count[1] += ((uint32) inputLen >> 29);
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partLen = 64 - index;
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/* Transform as many times as possible.
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*/
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if (inputLen >= partLen) {
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memcpy
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((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
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SHA1Transform(context->state, context->buffer);
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for (i = partLen; i + 63 < inputLen; i += 64)
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SHA1Transform(context->state, &input[i]);
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index = 0;
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} else
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i = 0;
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/* Buffer remaining input */
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memcpy
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((unsigned char*) & context->buffer[index], (unsigned char*) & input[i],
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inputLen - i);
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}
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/* }}} */
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/* {{{ MYSQL_SHA1Final
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SHA1 finalization. Ends an SHA1 message-digest operation, writing the
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the message digest and zeroizing the context.
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*/
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void MYSQL_SHA1Final(unsigned char digest[20], MYSQL_SHA1_CTX * context)
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{
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unsigned char bits[8];
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unsigned int index, padLen;
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/* Save number of bits */
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bits[7] = context->count[0] & 0xFF;
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bits[6] = (context->count[0] >> 8) & 0xFF;
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bits[5] = (context->count[0] >> 16) & 0xFF;
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bits[4] = (context->count[0] >> 24) & 0xFF;
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bits[3] = context->count[1] & 0xFF;
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bits[2] = (context->count[1] >> 8) & 0xFF;
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bits[1] = (context->count[1] >> 16) & 0xFF;
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bits[0] = (context->count[1] >> 24) & 0xFF;
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/* Pad out to 56 mod 64.
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*/
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index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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MYSQL_SHA1Update(context, PADDING, padLen);
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/* Append length (before padding) */
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MYSQL_SHA1Update(context, bits, 8);
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/* Store state in digest */
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SHA1Encode(digest, context->state, 20);
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/* Zeroize sensitive information.
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*/
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memset((unsigned char*) context, 0, sizeof(*context));
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}
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/* }}} */
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/* {{{ SHA1Transform
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* SHA1 basic transformation. Transforms state based on block.
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*/
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static void SHA1Transform(uint32 state[5], const unsigned char block[64])
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{
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uint32 a = state[0], b = state[1], c = state[2];
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uint32 d = state[3], e = state[4], x[16], tmp;
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SHA1Decode(x, block, 64);
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/* Round 1 */
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FF(a, b, c, d, e, x[0]); /* 1 */
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FF(e, a, b, c, d, x[1]); /* 2 */
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FF(d, e, a, b, c, x[2]); /* 3 */
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FF(c, d, e, a, b, x[3]); /* 4 */
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FF(b, c, d, e, a, x[4]); /* 5 */
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FF(a, b, c, d, e, x[5]); /* 6 */
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FF(e, a, b, c, d, x[6]); /* 7 */
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FF(d, e, a, b, c, x[7]); /* 8 */
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FF(c, d, e, a, b, x[8]); /* 9 */
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FF(b, c, d, e, a, x[9]); /* 10 */
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FF(a, b, c, d, e, x[10]); /* 11 */
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FF(e, a, b, c, d, x[11]); /* 12 */
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FF(d, e, a, b, c, x[12]); /* 13 */
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FF(c, d, e, a, b, x[13]); /* 14 */
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FF(b, c, d, e, a, x[14]); /* 15 */
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FF(a, b, c, d, e, x[15]); /* 16 */
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FF(e, a, b, c, d, W(16)); /* 17 */
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FF(d, e, a, b, c, W(17)); /* 18 */
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FF(c, d, e, a, b, W(18)); /* 19 */
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FF(b, c, d, e, a, W(19)); /* 20 */
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/* Round 2 */
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GG(a, b, c, d, e, W(20)); /* 21 */
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GG(e, a, b, c, d, W(21)); /* 22 */
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GG(d, e, a, b, c, W(22)); /* 23 */
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GG(c, d, e, a, b, W(23)); /* 24 */
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GG(b, c, d, e, a, W(24)); /* 25 */
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GG(a, b, c, d, e, W(25)); /* 26 */
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GG(e, a, b, c, d, W(26)); /* 27 */
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GG(d, e, a, b, c, W(27)); /* 28 */
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GG(c, d, e, a, b, W(28)); /* 29 */
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GG(b, c, d, e, a, W(29)); /* 30 */
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GG(a, b, c, d, e, W(30)); /* 31 */
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GG(e, a, b, c, d, W(31)); /* 32 */
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GG(d, e, a, b, c, W(32)); /* 33 */
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GG(c, d, e, a, b, W(33)); /* 34 */
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GG(b, c, d, e, a, W(34)); /* 35 */
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GG(a, b, c, d, e, W(35)); /* 36 */
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GG(e, a, b, c, d, W(36)); /* 37 */
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GG(d, e, a, b, c, W(37)); /* 38 */
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GG(c, d, e, a, b, W(38)); /* 39 */
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GG(b, c, d, e, a, W(39)); /* 40 */
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/* Round 3 */
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HH(a, b, c, d, e, W(40)); /* 41 */
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HH(e, a, b, c, d, W(41)); /* 42 */
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HH(d, e, a, b, c, W(42)); /* 43 */
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HH(c, d, e, a, b, W(43)); /* 44 */
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HH(b, c, d, e, a, W(44)); /* 45 */
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HH(a, b, c, d, e, W(45)); /* 46 */
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HH(e, a, b, c, d, W(46)); /* 47 */
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HH(d, e, a, b, c, W(47)); /* 48 */
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HH(c, d, e, a, b, W(48)); /* 49 */
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HH(b, c, d, e, a, W(49)); /* 50 */
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HH(a, b, c, d, e, W(50)); /* 51 */
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HH(e, a, b, c, d, W(51)); /* 52 */
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HH(d, e, a, b, c, W(52)); /* 53 */
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HH(c, d, e, a, b, W(53)); /* 54 */
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HH(b, c, d, e, a, W(54)); /* 55 */
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HH(a, b, c, d, e, W(55)); /* 56 */
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HH(e, a, b, c, d, W(56)); /* 57 */
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HH(d, e, a, b, c, W(57)); /* 58 */
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HH(c, d, e, a, b, W(58)); /* 59 */
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HH(b, c, d, e, a, W(59)); /* 60 */
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/* Round 4 */
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II(a, b, c, d, e, W(60)); /* 61 */
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II(e, a, b, c, d, W(61)); /* 62 */
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II(d, e, a, b, c, W(62)); /* 63 */
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II(c, d, e, a, b, W(63)); /* 64 */
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II(b, c, d, e, a, W(64)); /* 65 */
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II(a, b, c, d, e, W(65)); /* 66 */
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II(e, a, b, c, d, W(66)); /* 67 */
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II(d, e, a, b, c, W(67)); /* 68 */
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II(c, d, e, a, b, W(68)); /* 69 */
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II(b, c, d, e, a, W(69)); /* 70 */
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II(a, b, c, d, e, W(70)); /* 71 */
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II(e, a, b, c, d, W(71)); /* 72 */
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II(d, e, a, b, c, W(72)); /* 73 */
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II(c, d, e, a, b, W(73)); /* 74 */
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II(b, c, d, e, a, W(74)); /* 75 */
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II(a, b, c, d, e, W(75)); /* 76 */
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II(e, a, b, c, d, W(76)); /* 77 */
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II(d, e, a, b, c, W(77)); /* 78 */
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II(c, d, e, a, b, W(78)); /* 79 */
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II(b, c, d, e, a, W(79)); /* 80 */
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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state[4] += e;
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/* Zeroize sensitive information. */
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memset((unsigned char*) x, 0, sizeof(x));
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}
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/* }}} */
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/* {{{ SHA1Encode
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Encodes input (uint32) into output (unsigned char). Assumes len is
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a multiple of 4.
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*/
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static void SHA1Encode(unsigned char *output, uint32 *input, unsigned int len)
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{
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unsigned int i, j;
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for (i = 0, j = 0; j < len; i++, j += 4) {
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output[j] = (unsigned char) ((input[i] >> 24) & 0xff);
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output[j + 1] = (unsigned char) ((input[i] >> 16) & 0xff);
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output[j + 2] = (unsigned char) ((input[i] >> 8) & 0xff);
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output[j + 3] = (unsigned char) (input[i] & 0xff);
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}
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}
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/* }}} */
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/* {{{ SHA1Decode
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Decodes input (unsigned char) into output (uint32). Assumes len is
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a multiple of 4.
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*/
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static void SHA1Decode(uint32 *output, const unsigned char * input, unsigned int len)
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{
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unsigned int i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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output[i] = ((uint32) input[j + 3]) | (((uint32) input[j + 2]) << 8) |
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(((uint32) input[j + 1]) << 16) | (((uint32) input[j]) << 24);
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}
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/* }}} */
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: sw=4 ts=4 fdm=marker
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* vim<600: sw=4 ts=4
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*/
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