crypto/md4/md4_local.h

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <openssl/opensslconf.h>
  13 #include <openssl/md4.h>
  14
  15 void md4_block_data_order(MD4_CTX *c, const void *p, size_t num);
  16
  17 #define DATA_ORDER_IS_LITTLE_ENDIAN
  18
  19 #define HASH_LONG               MD4_LONG
  20 #define HASH_CTX                MD4_CTX
  21 #define HASH_CBLOCK             MD4_CBLOCK
  22 #define HASH_UPDATE             MD4_Update
  23 #define HASH_TRANSFORM          MD4_Transform
  24 #define HASH_FINAL              MD4_Final
  25 #define HASH_MAKE_STRING(c,s)   do {    \
  26         unsigned long ll;               \
  27         ll=(c)->A; (void)HOST_l2c(ll,(s));      \
  28         ll=(c)->B; (void)HOST_l2c(ll,(s));      \
  29         ll=(c)->C; (void)HOST_l2c(ll,(s));      \
  30         ll=(c)->D; (void)HOST_l2c(ll,(s));      \
  31         } while (0)
  32 #define HASH_BLOCK_DATA_ORDER   md4_block_data_order
  33
  34 #include "crypto/md32_common.h"
  35
  36 /*-
  37 #define F(x,y,z)        (((x) & (y))  |  ((~(x)) & (z)))
  38 #define G(x,y,z)        (((x) & (y))  |  ((x) & ((z))) | ((y) & ((z))))
  39 */
  40
  41 /*
  42  * As pointed out by Wei Dai, the above can be simplified to the code
  43  * below.  Wei attributes these optimizations to Peter Gutmann's SHS code,
  44  * and he attributes it to Rich Schroeppel.
  45  */
  46 #define F(b,c,d)        ((((c) ^ (d)) & (b)) ^ (d))
  47 #define G(b,c,d)        (((b) & (c)) | ((b) & (d)) | ((c) & (d)))
  48 #define H(b,c,d)        ((b) ^ (c) ^ (d))
  49
  50 #define R0(a,b,c,d,k,s,t) { \
  51         a+=((k)+(t)+F((b),(c),(d))); \
  52         a=ROTATE(a,s); };
  53
  54 #define R1(a,b,c,d,k,s,t) { \
  55         a+=((k)+(t)+G((b),(c),(d))); \
  56         a=ROTATE(a,s); };\
  57
  58 #define R2(a,b,c,d,k,s,t) { \
  59         a+=((k)+(t)+H((b),(c),(d))); \
  60         a=ROTATE(a,s); };