crypto/md4/md4_dgst.c

   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 <stdio.h>
  11 #include <openssl/opensslv.h>
  12 #include "md4_locl.h"
  13
  14 /*
  15  * Implemented from RFC1186 The MD4 Message-Digest Algorithm
  16  */
  17
  18 #define INIT_DATA_A (unsigned long)0x67452301L
  19 #define INIT_DATA_B (unsigned long)0xefcdab89L
  20 #define INIT_DATA_C (unsigned long)0x98badcfeL
  21 #define INIT_DATA_D (unsigned long)0x10325476L
  22
  23 int MD4_Init(MD4_CTX *c)
  24 {
  25     memset(c, 0, sizeof(*c));
  26     c->A = INIT_DATA_A;
  27     c->B = INIT_DATA_B;
  28     c->C = INIT_DATA_C;
  29     c->D = INIT_DATA_D;
  30     return 1;
  31 }
  32
  33 #ifndef md4_block_data_order
  34 # ifdef X
  35 #  undef X
  36 # endif
  37 void md4_block_data_order(MD4_CTX *c, const void *data_, size_t num)
  38 {
  39     const unsigned char *data = data_;
  40     register unsigned MD32_REG_T A, B, C, D, l;
  41 # ifndef MD32_XARRAY
  42     /* See comment in crypto/sha/sha_locl.h for details. */
  43     unsigned MD32_REG_T XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
  44         XX8, XX9, XX10, XX11, XX12, XX13, XX14, XX15;
  45 #  define X(i)   XX##i
  46 # else
  47     MD4_LONG XX[MD4_LBLOCK];
  48 #  define X(i)   XX[i]
  49 # endif
  50
  51     A = c->A;
  52     B = c->B;
  53     C = c->C;
  54     D = c->D;
  55
  56     for (; num--;) {
  57         (void)HOST_c2l(data, l);
  58         X(0) = l;
  59         (void)HOST_c2l(data, l);
  60         X(1) = l;
  61         /* Round 0 */
  62         R0(A, B, C, D, X(0), 3, 0);
  63         (void)HOST_c2l(data, l);
  64         X(2) = l;
  65         R0(D, A, B, C, X(1), 7, 0);
  66         (void)HOST_c2l(data, l);
  67         X(3) = l;
  68         R0(C, D, A, B, X(2), 11, 0);
  69         (void)HOST_c2l(data, l);
  70         X(4) = l;
  71         R0(B, C, D, A, X(3), 19, 0);
  72         (void)HOST_c2l(data, l);
  73         X(5) = l;
  74         R0(A, B, C, D, X(4), 3, 0);
  75         (void)HOST_c2l(data, l);
  76         X(6) = l;
  77         R0(D, A, B, C, X(5), 7, 0);
  78         (void)HOST_c2l(data, l);
  79         X(7) = l;
  80         R0(C, D, A, B, X(6), 11, 0);
  81         (void)HOST_c2l(data, l);
  82         X(8) = l;
  83         R0(B, C, D, A, X(7), 19, 0);
  84         (void)HOST_c2l(data, l);
  85         X(9) = l;
  86         R0(A, B, C, D, X(8), 3, 0);
  87         (void)HOST_c2l(data, l);
  88         X(10) = l;
  89         R0(D, A, B, C, X(9), 7, 0);
  90         (void)HOST_c2l(data, l);
  91         X(11) = l;
  92         R0(C, D, A, B, X(10), 11, 0);
  93         (void)HOST_c2l(data, l);
  94         X(12) = l;
  95         R0(B, C, D, A, X(11), 19, 0);
  96         (void)HOST_c2l(data, l);
  97         X(13) = l;
  98         R0(A, B, C, D, X(12), 3, 0);
  99         (void)HOST_c2l(data, l);
 100         X(14) = l;
 101         R0(D, A, B, C, X(13), 7, 0);
 102         (void)HOST_c2l(data, l);
 103         X(15) = l;
 104         R0(C, D, A, B, X(14), 11, 0);
 105         R0(B, C, D, A, X(15), 19, 0);
 106         /* Round 1 */
 107         R1(A, B, C, D, X(0), 3, 0x5A827999L);
 108         R1(D, A, B, C, X(4), 5, 0x5A827999L);
 109         R1(C, D, A, B, X(8), 9, 0x5A827999L);
 110         R1(B, C, D, A, X(12), 13, 0x5A827999L);
 111         R1(A, B, C, D, X(1), 3, 0x5A827999L);
 112         R1(D, A, B, C, X(5), 5, 0x5A827999L);
 113         R1(C, D, A, B, X(9), 9, 0x5A827999L);
 114         R1(B, C, D, A, X(13), 13, 0x5A827999L);
 115         R1(A, B, C, D, X(2), 3, 0x5A827999L);
 116         R1(D, A, B, C, X(6), 5, 0x5A827999L);
 117         R1(C, D, A, B, X(10), 9, 0x5A827999L);
 118         R1(B, C, D, A, X(14), 13, 0x5A827999L);
 119         R1(A, B, C, D, X(3), 3, 0x5A827999L);
 120         R1(D, A, B, C, X(7), 5, 0x5A827999L);
 121         R1(C, D, A, B, X(11), 9, 0x5A827999L);
 122         R1(B, C, D, A, X(15), 13, 0x5A827999L);
 123         /* Round 2 */
 124         R2(A, B, C, D, X(0), 3, 0x6ED9EBA1L);
 125         R2(D, A, B, C, X(8), 9, 0x6ED9EBA1L);
 126         R2(C, D, A, B, X(4), 11, 0x6ED9EBA1L);
 127         R2(B, C, D, A, X(12), 15, 0x6ED9EBA1L);
 128         R2(A, B, C, D, X(2), 3, 0x6ED9EBA1L);
 129         R2(D, A, B, C, X(10), 9, 0x6ED9EBA1L);
 130         R2(C, D, A, B, X(6), 11, 0x6ED9EBA1L);
 131         R2(B, C, D, A, X(14), 15, 0x6ED9EBA1L);
 132         R2(A, B, C, D, X(1), 3, 0x6ED9EBA1L);
 133         R2(D, A, B, C, X(9), 9, 0x6ED9EBA1L);
 134         R2(C, D, A, B, X(5), 11, 0x6ED9EBA1L);
 135         R2(B, C, D, A, X(13), 15, 0x6ED9EBA1L);
 136         R2(A, B, C, D, X(3), 3, 0x6ED9EBA1L);
 137         R2(D, A, B, C, X(11), 9, 0x6ED9EBA1L);
 138         R2(C, D, A, B, X(7), 11, 0x6ED9EBA1L);
 139         R2(B, C, D, A, X(15), 15, 0x6ED9EBA1L);
 140
 141         A = c->A += A;
 142         B = c->B += B;
 143         C = c->C += C;
 144         D = c->D += D;
 145     }
 146 }
 147 #endif