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boringssl/crypto/md4/md4.c
Brian Smith 054e682675 Eliminate unnecessary includes from low-level crypto modules. 
Beyond generally eliminating unnecessary includes, eliminate as many
includes of headers that declare/define particularly error-prone
functionality like strlen, malloc, and free. crypto/err/internal.h was
added to remove the dependency on openssl/thread.h from the public
openssl/err.h header. The include of <stdlib.h> in openssl/mem.h was
retained since it defines OPENSSL_malloc and friends as macros around
the stdlib.h functions. The public x509.h, x509v3.h, and ssl.h headers
were not changed in order to minimize breakage of source compatibility
with external code.

Change-Id: I0d264b73ad0a720587774430b2ab8f8275960329
Reviewed-on: https://boringssl-review.googlesource.com/4220
Reviewed-by: Adam Langley <agl@google.com>
2015-04-13 20:49:18 +00:00

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/* 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/md4.h>
#include <stdlib.h>
#include <string.h>
/* Implemented from RFC1186 The MD4 Message-Digest Algorithm. */
int MD4_Init(MD4_CTX *md4) {
memset(md4, 0, sizeof(MD4_CTX));
md4->A = 0x67452301UL;
md4->B = 0xefcdab89UL;
md4->C = 0x98badcfeUL;
md4->D = 0x10325476UL;
return 1;
}
void md4_block_data_order (MD4_CTX *md4, const void *p, size_t num);
#define DATA_ORDER_IS_LITTLE_ENDIAN
#define HASH_LONG uint32_t
#define HASH_CTX MD4_CTX
#define HASH_CBLOCK 64
#define HASH_UPDATE MD4_Update
#define HASH_TRANSFORM MD4_Transform
#define HASH_FINAL MD4_Final
#define HASH_MAKE_STRING(c, s) \
do { \
unsigned long ll; \
ll = (c)->A; \
(void) HOST_l2c(ll, (s)); \
ll = (c)->B; \
(void) HOST_l2c(ll, (s)); \
ll = (c)->C; \
(void) HOST_l2c(ll, (s)); \
ll = (c)->D; \
(void) HOST_l2c(ll, (s)); \
} while (0)
#define HASH_BLOCK_DATA_ORDER md4_block_data_order
#include "../digest/md32_common.h"
/* 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)) | ((b) & (d)) | ((c) & (d)))
#define H(b, c, d) ((b) ^ (c) ^ (d))
#define R0(a, b, c, d, k, s, t) \
{ \
a += ((k) + (t)+F((b), (c), (d))); \
a = ROTATE(a, s); \
};
#define R1(a, b, c, d, k, s, t) \
{ \
a += ((k) + (t)+G((b), (c), (d))); \
a = ROTATE(a, s); \
};
#define R2(a, b, c, d, k, s, t) \
{ \
a += ((k) + (t)+H((b), (c), (d))); \
a = ROTATE(a, s); \
};
void md4_block_data_order(MD4_CTX *c, const void *data_, size_t num) {
const uint8_t *data = data_;
uint32_t A, B, C, D, l;
uint32_t X0, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15;
A = c->A;
B = c->B;
C = c->C;
D = c->D;
for (; num--;) {
HOST_c2l(data, l);
X0 = l;
HOST_c2l(data, l);
X1 = l;
/* Round 0 */
R0(A, B, C, D, X0, 3, 0);
HOST_c2l(data, l);
X2 = l;
R0(D, A, B, C, X1, 7, 0);
HOST_c2l(data, l);
X3 = l;
R0(C, D, A, B, X2, 11, 0);
HOST_c2l(data, l);
X4 = l;
R0(B, C, D, A, X3, 19, 0);
HOST_c2l(data, l);
X5 = l;
R0(A, B, C, D, X4, 3, 0);
HOST_c2l(data, l);
X6 = l;
R0(D, A, B, C, X5, 7, 0);
HOST_c2l(data, l);
X7 = l;
R0(C, D, A, B, X6, 11, 0);
HOST_c2l(data, l);
X8 = l;
R0(B, C, D, A, X7, 19, 0);
HOST_c2l(data, l);
X9 = l;
R0(A, B, C, D, X8, 3, 0);
HOST_c2l(data, l);
X10 = l;
R0(D, A, B, C, X9, 7, 0);
HOST_c2l(data, l);
X11 = l;
R0(C, D, A, B, X10, 11, 0);
HOST_c2l(data, l);
X12 = l;
R0(B, C, D, A, X11, 19, 0);
HOST_c2l(data, l);
X13 = l;
R0(A, B, C, D, X12, 3, 0);
HOST_c2l(data, l);
X14 = l;
R0(D, A, B, C, X13, 7, 0);
HOST_c2l(data, l);
X15 = l;
R0(C, D, A, B, X14, 11, 0);
R0(B, C, D, A, X15, 19, 0);
/* Round 1 */
R1(A, B, C, D, X0, 3, 0x5A827999L);
R1(D, A, B, C, X4, 5, 0x5A827999L);
R1(C, D, A, B, X8, 9, 0x5A827999L);
R1(B, C, D, A, X12, 13, 0x5A827999L);
R1(A, B, C, D, X1, 3, 0x5A827999L);
R1(D, A, B, C, X5, 5, 0x5A827999L);
R1(C, D, A, B, X9, 9, 0x5A827999L);
R1(B, C, D, A, X13, 13, 0x5A827999L);
R1(A, B, C, D, X2, 3, 0x5A827999L);
R1(D, A, B, C, X6, 5, 0x5A827999L);
R1(C, D, A, B, X10, 9, 0x5A827999L);
R1(B, C, D, A, X14, 13, 0x5A827999L);
R1(A, B, C, D, X3, 3, 0x5A827999L);
R1(D, A, B, C, X7, 5, 0x5A827999L);
R1(C, D, A, B, X11, 9, 0x5A827999L);
R1(B, C, D, A, X15, 13, 0x5A827999L);
/* Round 2 */
R2(A, B, C, D, X0, 3, 0x6ED9EBA1L);
R2(D, A, B, C, X8, 9, 0x6ED9EBA1L);
R2(C, D, A, B, X4, 11, 0x6ED9EBA1L);
R2(B, C, D, A, X12, 15, 0x6ED9EBA1L);
R2(A, B, C, D, X2, 3, 0x6ED9EBA1L);
R2(D, A, B, C, X10, 9, 0x6ED9EBA1L);
R2(C, D, A, B, X6, 11, 0x6ED9EBA1L);
R2(B, C, D, A, X14, 15, 0x6ED9EBA1L);
R2(A, B, C, D, X1, 3, 0x6ED9EBA1L);
R2(D, A, B, C, X9, 9, 0x6ED9EBA1L);
R2(C, D, A, B, X5, 11, 0x6ED9EBA1L);
R2(B, C, D, A, X13, 15, 0x6ED9EBA1L);
R2(A, B, C, D, X3, 3, 0x6ED9EBA1L);
R2(D, A, B, C, X11, 9, 0x6ED9EBA1L);
R2(C, D, A, B, X7, 11, 0x6ED9EBA1L);
R2(B, C, D, A, X15, 15, 0x6ED9EBA1L);
A = c->A += A;
B = c->B += B;
C = c->C += C;
D = c->D += D;
}
}
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