ref: 2cdc6577ef8a251bf1740439cf5bfc47050dab41
dir: /third_party/boringssl/src/crypto/fipsmodule/md5/md5.c/
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.] */
#include <openssl/md5.h>
#include <string.h>
#include <openssl/mem.h>
#include "../../internal.h"
#include "../digest/md32_common.h"
#include "internal.h"
uint8_t *MD5(const uint8_t *data, size_t len, uint8_t out[MD5_DIGEST_LENGTH]) {
MD5_CTX ctx;
MD5_Init(&ctx);
MD5_Update(&ctx, data, len);
MD5_Final(out, &ctx);
return out;
}
int MD5_Init(MD5_CTX *md5) {
OPENSSL_memset(md5, 0, sizeof(MD5_CTX));
md5->h[0] = 0x67452301UL;
md5->h[1] = 0xefcdab89UL;
md5->h[2] = 0x98badcfeUL;
md5->h[3] = 0x10325476UL;
return 1;
}
#if defined(MD5_ASM)
#define md5_block_data_order md5_block_asm_data_order
#else
static void md5_block_data_order(uint32_t *state, const uint8_t *data,
size_t num);
#endif
void MD5_Transform(MD5_CTX *c, const uint8_t data[MD5_CBLOCK]) {
md5_block_data_order(c->h, data, 1);
}
int MD5_Update(MD5_CTX *c, const void *data, size_t len) {
crypto_md32_update(&md5_block_data_order, c->h, c->data, MD5_CBLOCK, &c->num,
&c->Nh, &c->Nl, data, len);
return 1;
}
int MD5_Final(uint8_t out[MD5_DIGEST_LENGTH], MD5_CTX *c) {
crypto_md32_final(&md5_block_data_order, c->h, c->data, MD5_CBLOCK, &c->num,
c->Nh, c->Nl, /*is_big_endian=*/0);
CRYPTO_store_u32_le(out, c->h[0]);
CRYPTO_store_u32_le(out + 4, c->h[1]);
CRYPTO_store_u32_le(out + 8, c->h[2]);
CRYPTO_store_u32_le(out + 12, c->h[3]);
return 1;
}
// As pointed out by Wei Dai <weidai@eskimo.com>, the above can be
// simplified to the code below. Wei attributes these optimizations
// to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
#define F(b, c, d) ((((c) ^ (d)) & (b)) ^ (d))
#define G(b, c, d) ((((b) ^ (c)) & (d)) ^ (c))
#define H(b, c, d) ((b) ^ (c) ^ (d))
#define I(b, c, d) (((~(d)) | (b)) ^ (c))
#define R0(a, b, c, d, k, s, t) \
do { \
(a) += ((k) + (t) + F((b), (c), (d))); \
(a) = CRYPTO_rotl_u32(a, s); \
(a) += (b); \
} while (0)
#define R1(a, b, c, d, k, s, t) \
do { \
(a) += ((k) + (t) + G((b), (c), (d))); \
(a) = CRYPTO_rotl_u32(a, s); \
(a) += (b); \
} while (0)
#define R2(a, b, c, d, k, s, t) \
do { \
(a) += ((k) + (t) + H((b), (c), (d))); \
(a) = CRYPTO_rotl_u32(a, s); \
(a) += (b); \
} while (0)
#define R3(a, b, c, d, k, s, t) \
do { \
(a) += ((k) + (t) + I((b), (c), (d))); \
(a) = CRYPTO_rotl_u32(a, s); \
(a) += (b); \
} while (0)
#ifndef MD5_ASM
#ifdef X
#undef X
#endif
static void md5_block_data_order(uint32_t *state, const uint8_t *data,
size_t num) {
uint32_t A, B, C, D;
uint32_t XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7, XX8, XX9, XX10, XX11, XX12,
XX13, XX14, XX15;
#define X(i) XX##i
A = state[0];
B = state[1];
C = state[2];
D = state[3];
for (; num--;) {
X(0) = CRYPTO_load_u32_le(data);
data += 4;
X(1) = CRYPTO_load_u32_le(data);
data += 4;
// Round 0
R0(A, B, C, D, X(0), 7, 0xd76aa478L);
X(2) = CRYPTO_load_u32_le(data);
data += 4;
R0(D, A, B, C, X(1), 12, 0xe8c7b756L);
X(3) = CRYPTO_load_u32_le(data);
data += 4;
R0(C, D, A, B, X(2), 17, 0x242070dbL);
X(4) = CRYPTO_load_u32_le(data);
data += 4;
R0(B, C, D, A, X(3), 22, 0xc1bdceeeL);
X(5) = CRYPTO_load_u32_le(data);
data += 4;
R0(A, B, C, D, X(4), 7, 0xf57c0fafL);
X(6) = CRYPTO_load_u32_le(data);
data += 4;
R0(D, A, B, C, X(5), 12, 0x4787c62aL);
X(7) = CRYPTO_load_u32_le(data);
data += 4;
R0(C, D, A, B, X(6), 17, 0xa8304613L);
X(8) = CRYPTO_load_u32_le(data);
data += 4;
R0(B, C, D, A, X(7), 22, 0xfd469501L);
X(9) = CRYPTO_load_u32_le(data);
data += 4;
R0(A, B, C, D, X(8), 7, 0x698098d8L);
X(10) = CRYPTO_load_u32_le(data);
data += 4;
R0(D, A, B, C, X(9), 12, 0x8b44f7afL);
X(11) = CRYPTO_load_u32_le(data);
data += 4;
R0(C, D, A, B, X(10), 17, 0xffff5bb1L);
X(12) = CRYPTO_load_u32_le(data);
data += 4;
R0(B, C, D, A, X(11), 22, 0x895cd7beL);
X(13) = CRYPTO_load_u32_le(data);
data += 4;
R0(A, B, C, D, X(12), 7, 0x6b901122L);
X(14) = CRYPTO_load_u32_le(data);
data += 4;
R0(D, A, B, C, X(13), 12, 0xfd987193L);
X(15) = CRYPTO_load_u32_le(data);
data += 4;
R0(C, D, A, B, X(14), 17, 0xa679438eL);
R0(B, C, D, A, X(15), 22, 0x49b40821L);
// Round 1
R1(A, B, C, D, X(1), 5, 0xf61e2562L);
R1(D, A, B, C, X(6), 9, 0xc040b340L);
R1(C, D, A, B, X(11), 14, 0x265e5a51L);
R1(B, C, D, A, X(0), 20, 0xe9b6c7aaL);
R1(A, B, C, D, X(5), 5, 0xd62f105dL);
R1(D, A, B, C, X(10), 9, 0x02441453L);
R1(C, D, A, B, X(15), 14, 0xd8a1e681L);
R1(B, C, D, A, X(4), 20, 0xe7d3fbc8L);
R1(A, B, C, D, X(9), 5, 0x21e1cde6L);
R1(D, A, B, C, X(14), 9, 0xc33707d6L);
R1(C, D, A, B, X(3), 14, 0xf4d50d87L);
R1(B, C, D, A, X(8), 20, 0x455a14edL);
R1(A, B, C, D, X(13), 5, 0xa9e3e905L);
R1(D, A, B, C, X(2), 9, 0xfcefa3f8L);
R1(C, D, A, B, X(7), 14, 0x676f02d9L);
R1(B, C, D, A, X(12), 20, 0x8d2a4c8aL);
// Round 2
R2(A, B, C, D, X(5), 4, 0xfffa3942L);
R2(D, A, B, C, X(8), 11, 0x8771f681L);
R2(C, D, A, B, X(11), 16, 0x6d9d6122L);
R2(B, C, D, A, X(14), 23, 0xfde5380cL);
R2(A, B, C, D, X(1), 4, 0xa4beea44L);
R2(D, A, B, C, X(4), 11, 0x4bdecfa9L);
R2(C, D, A, B, X(7), 16, 0xf6bb4b60L);
R2(B, C, D, A, X(10), 23, 0xbebfbc70L);
R2(A, B, C, D, X(13), 4, 0x289b7ec6L);
R2(D, A, B, C, X(0), 11, 0xeaa127faL);
R2(C, D, A, B, X(3), 16, 0xd4ef3085L);
R2(B, C, D, A, X(6), 23, 0x04881d05L);
R2(A, B, C, D, X(9), 4, 0xd9d4d039L);
R2(D, A, B, C, X(12), 11, 0xe6db99e5L);
R2(C, D, A, B, X(15), 16, 0x1fa27cf8L);
R2(B, C, D, A, X(2), 23, 0xc4ac5665L);
// Round 3
R3(A, B, C, D, X(0), 6, 0xf4292244L);
R3(D, A, B, C, X(7), 10, 0x432aff97L);
R3(C, D, A, B, X(14), 15, 0xab9423a7L);
R3(B, C, D, A, X(5), 21, 0xfc93a039L);
R3(A, B, C, D, X(12), 6, 0x655b59c3L);
R3(D, A, B, C, X(3), 10, 0x8f0ccc92L);
R3(C, D, A, B, X(10), 15, 0xffeff47dL);
R3(B, C, D, A, X(1), 21, 0x85845dd1L);
R3(A, B, C, D, X(8), 6, 0x6fa87e4fL);
R3(D, A, B, C, X(15), 10, 0xfe2ce6e0L);
R3(C, D, A, B, X(6), 15, 0xa3014314L);
R3(B, C, D, A, X(13), 21, 0x4e0811a1L);
R3(A, B, C, D, X(4), 6, 0xf7537e82L);
R3(D, A, B, C, X(11), 10, 0xbd3af235L);
R3(C, D, A, B, X(2), 15, 0x2ad7d2bbL);
R3(B, C, D, A, X(9), 21, 0xeb86d391L);
A = state[0] += A;
B = state[1] += B;
C = state[2] += C;
D = state[3] += D;
}
}
#undef X
#endif
#undef F
#undef G
#undef H
#undef I
#undef R0
#undef R1
#undef R2
#undef R3