/* 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_grpc/md4.h>
#include <stdlib.h>
#include <string.h>
#include "../../internal.h"
#include "../digest/md32_common.h"
uint8_t *MD4(const uint8_t *data, size_t len, uint8_t out[MD4_DIGEST_LENGTH]) {
MD4_CTX ctx;
MD4_Init(&ctx);
MD4_Update(&ctx, data, len);
MD4_Final(out, &ctx);
return out;
}
// Implemented from RFC 1186 The MD4 Message-Digest Algorithm.
int MD4_Init(MD4_CTX *md4) {
OPENSSL_memset(md4, 0, sizeof(MD4_CTX));
md4->h[0] = 0x67452301UL;
md4->h[1] = 0xefcdab89UL;
md4->h[2] = 0x98badcfeUL;
md4->h[3] = 0x10325476UL;
return 1;
}
void md4_block_data_order(uint32_t *state, const uint8_t *data, size_t num);
void MD4_Transform(MD4_CTX *c, const uint8_t data[MD4_CBLOCK]) {
md4_block_data_order(c->h, data, 1);
}
int MD4_Update(MD4_CTX *c, const void *data, size_t len) {
crypto_md32_update(&md4_block_data_order, c->h, c->data, MD4_CBLOCK, &c->num,
&c->Nh, &c->Nl, data, len);
return 1;
}
int MD4_Final(uint8_t out[MD4_DIGEST_LENGTH], MD4_CTX *c) {
crypto_md32_final(&md4_block_data_order, c->h, c->data, MD4_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)) | ((b) & (d)) | ((c) & (d)))
#define H(b, c, d) ((b) ^ (c) ^ (d))
#define R0(a, b, c, d, k, s, t) \
do { \
(a) += ((k) + (t) + F((b), (c), (d))); \
(a) = CRYPTO_rotl_u32(a, s); \
} 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); \
} 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); \
} while (0)
void md4_block_data_order(uint32_t *state, const uint8_t *data, size_t num) {
uint32_t A, B, C, D;
uint32_t X0, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15;
A = state[0];
B = state[1];
C = state[2];
D = state[3];
for (; num--;) {
X0 = CRYPTO_load_u32_le(data);
data += 4;
X1 = CRYPTO_load_u32_le(data);
data += 4;
// Round 0
R0(A, B, C, D, X0, 3, 0);
X2 = CRYPTO_load_u32_le(data);
data += 4;
R0(D, A, B, C, X1, 7, 0);
X3 = CRYPTO_load_u32_le(data);
data += 4;
R0(C, D, A, B, X2, 11, 0);
X4 = CRYPTO_load_u32_le(data);
data += 4;
R0(B, C, D, A, X3, 19, 0);
X5 = CRYPTO_load_u32_le(data);
data += 4;
R0(A, B, C, D, X4, 3, 0);
X6 = CRYPTO_load_u32_le(data);
data += 4;
R0(D, A, B, C, X5, 7, 0);
X7 = CRYPTO_load_u32_le(data);
data += 4;
R0(C, D, A, B, X6, 11, 0);
X8 = CRYPTO_load_u32_le(data);
data += 4;
R0(B, C, D, A, X7, 19, 0);
X9 = CRYPTO_load_u32_le(data);
data += 4;
R0(A, B, C, D, X8, 3, 0);
X10 = CRYPTO_load_u32_le(data);
data += 4;
R0(D, A, B, C, X9, 7, 0);
X11 = CRYPTO_load_u32_le(data);
data += 4;
R0(C, D, A, B, X10, 11, 0);
X12 = CRYPTO_load_u32_le(data);
data += 4;
R0(B, C, D, A, X11, 19, 0);
X13 = CRYPTO_load_u32_le(data);
data += 4;
R0(A, B, C, D, X12, 3, 0);
X14 = CRYPTO_load_u32_le(data);
data += 4;
R0(D, A, B, C, X13, 7, 0);
X15 = CRYPTO_load_u32_le(data);
data += 4;
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 = state[0] += A;
B = state[1] += B;
C = state[2] += C;
D = state[3] += D;
}
}
#undef F
#undef G
#undef H
#undef R0
#undef R1
#undef R2