307 lines
10 KiB
C
307 lines
10 KiB
C
/*
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* $Id$
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*
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Copyright (c) 2006-2019 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <qse/cry/md5.h>
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#include "../cmn/mem-prv.h"
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/*
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Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
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rights reserved.
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License to copy and use this software is granted provided that it
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is identified as the "RSA Data Security, Inc. MD5 Message-Digest
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Algorithm" in all material mentioning or referencing this software
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or this function.
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License is also granted to make and use derivative works provided
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that such works are identified as "derived from the RSA Data
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Security, Inc. MD5 Message-Digest Algorithm" in all material
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mentioning or referencing the derived work.
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RSA Data Security, Inc. makes no representations concerning either
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the merchantability of this software or the suitability of this
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software for any particular purpose. It is provided "as is"
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without express or implied warranty of any kind.
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These notices must be retained in any copies of any part of this
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documentation and/or software.
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*/
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#define S11 7
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#define S12 12
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#define S13 17
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#define S14 22
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#define S21 5
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#define S22 9
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#define S23 14
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#define S24 20
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#define S31 4
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#define S32 11
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#define S33 16
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#define S34 23
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#define S41 6
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#define S42 10
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#define S43 15
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#define S44 21
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
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#define H(x, y, z) ((x) ^ (y) ^ (z))
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#define I(x, y, z) ((y) ^ ((x) | (~z)))
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/* ROTATE_LEFT rotates x left n bits. */
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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#define FF(a, b, c, d, x, s, ac) { \
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(a) += F ((b), (c), (d)) + (x) + (qse_uint32_t)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define GG(a, b, c, d, x, s, ac) { \
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(a) += G ((b), (c), (d)) + (x) + (qse_uint32_t)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define HH(a, b, c, d, x, s, ac) { \
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(a) += H ((b), (c), (d)) + (x) + (qse_uint32_t)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define II(a, b, c, d, x, s, ac) { \
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(a) += I ((b), (c), (d)) + (x) + (qse_uint32_t)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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static qse_uint8_t padding[64] = {
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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static void __transform (qse_uint32_t state[4], qse_uint8_t block[64]);
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static void __encode (qse_uint8_t* output, qse_uint32_t* input, qse_size_t len);
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static void __decode (qse_uint32_t* output, qse_uint8_t* input, qse_size_t len);
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void qse_md5_initialize (qse_md5_t* md5)
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{
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md5->count[0] = 0;
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md5->count[1] = 0;
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md5->state[0] = 0x67452301;
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md5->state[1] = 0xEFCDAB89;
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md5->state[2] = 0x98BADCFE;
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md5->state[3] = 0x10325476;
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}
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void qse_md5_update (qse_md5_t* md5, const void* data, qse_uint32_t len)
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{
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qse_uint8_t* input = (qse_uint8_t*)data;
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qse_uint32_t index, part_len, i;
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/* compute number of bytes mod 64 */
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index = (qse_uint32_t)((md5->count[0] >> 3) & 0x3F);
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/* update number of bits */
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md5->count[0] += ((qse_uint32_t)len << 3);
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if (md5->count[0] < ((qse_uint32_t)len << 3)) md5->count[1]++;
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md5->count[1] += (qse_uint32_t)len >> 29;
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part_len = 64 - index;
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/* transform as many times as possible */
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if (len >= part_len)
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{
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QSE_MEMCPY (&md5->buffer[index], input, part_len);
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__transform (md5->state, md5->buffer);
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for (i = part_len; i + 63 < len; i += 64)
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__transform (md5->state, &input[i]);
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index = 0;
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}
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else i = 0;
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/* buffer remaining input */
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QSE_MEMCPY (&md5->buffer[index], &input[i], len - i);
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}
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void qse_md5_updatex (qse_md5_t* md5, const void* data, qse_size_t len)
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{
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const qse_uint8_t* input = (qse_uint8_t*)data;
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while (len > QSE_TYPE_MAX(qse_uint32_t))
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{
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qse_md5_update (md5, input, QSE_TYPE_MAX(qse_uint32_t));
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input += QSE_TYPE_MAX(qse_uint32_t);
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len -= QSE_TYPE_MAX(qse_uint32_t);
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}
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qse_md5_update (md5, input, len);
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}
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qse_size_t qse_md5_digest (qse_md5_t* md5, void* digest, qse_size_t size)
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{
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qse_uint8_t bits[8];
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qse_uint32_t index, pad_len;
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qse_uint8_t digbuf[QSE_MD5_DIGEST_LEN];
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/* save number of bits */
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__encode (bits, md5->count, 8);
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/* pad out to 56 mod 64 */
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index = (qse_uint32_t)((md5->count[0] >> 3) & 0x3F);
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pad_len = (index < 56)? (56 - index): (120 - index);
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qse_md5_update (md5, padding, pad_len);
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/* append length (before padding) */
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qse_md5_update (md5, bits, 8);
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/* store state in digest */
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__encode (digbuf, md5->state, QSE_COUNTOF(digbuf));
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qse_md5_initialize (md5);
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if (size > QSE_COUNTOF(digbuf)) size = QSE_COUNTOF(digbuf);
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QSE_MEMCPY (digest, digbuf, size);
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return size;
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}
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static void __transform (qse_uint32_t state[4], qse_uint8_t block[64])
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{
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qse_uint32_t a, b, c, d, x[16];
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a = state[0];
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b = state[1];
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c = state[2];
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d = state[3];
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__decode (x, block, 64);
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/* Round 1 */
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FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
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FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
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FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
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FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
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FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
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FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
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FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
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FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
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FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
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FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
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FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
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FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
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FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
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FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
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FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
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FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
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/* Round 2 */
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GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
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GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
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GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
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GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
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GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
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GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
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GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
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GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
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GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
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GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
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GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
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GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
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GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
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GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
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GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
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GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
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/* Round 3 */
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HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
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HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
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HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
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HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
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HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
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HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
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HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
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HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
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HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
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HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
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HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
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HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
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HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
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HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
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HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
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HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
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/* Round 4 */
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II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
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II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
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II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
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II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
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II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
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II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
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II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
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II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
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II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
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II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
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II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
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II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
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II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
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II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
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II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
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II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
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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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}
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static void __encode (qse_uint8_t* output, qse_uint32_t* input, qse_size_t len)
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{
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qse_size_t i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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{
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output[j + 0] = (qse_uint8_t)((input[i] >> 0) & 0xFF);
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output[j + 1] = (qse_uint8_t)((input[i] >> 8) & 0xFF);
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output[j + 2] = (qse_uint8_t)((input[i] >> 16) & 0xFF);
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output[j + 3] = (qse_uint8_t)((input[i] >> 24) & 0xFF);
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}
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}
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static void __decode (qse_uint32_t* output, qse_uint8_t* input, qse_size_t len)
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{
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qse_size_t i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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{
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output[i] = input[j] | (input[j + 1] << 8) | (input[j + 2] << 16) | (input[j + 3] << 24);
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}
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}
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