1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (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 "md5_local.h"
12#include <openssl/opensslv.h>
13
14/*
15 * Implemented from RFC1321 The MD5 Message-Digest Algorithm
16 */
17
18#define INIT_DATA_A (MD5_LONG)0x67452301L
19#define INIT_DATA_B (MD5_LONG)0xefcdab89L
20#define INIT_DATA_C (MD5_LONG)0x98badcfeL
21#define INIT_DATA_D (MD5_LONG)0x10325476L
22
23int MD5_Init(MD5_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 md5_block_data_order
34# ifdef X
35#  undef X
36# endif
37void md5_block_data_order(MD5_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_local.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    MD5_LONG XX[MD5_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), 7, 0xd76aa478L);
63        (void)HOST_c2l(data, l);
64        X(2) = l;
65        R0(D, A, B, C, X(1), 12, 0xe8c7b756L);
66        (void)HOST_c2l(data, l);
67        X(3) = l;
68        R0(C, D, A, B, X(2), 17, 0x242070dbL);
69        (void)HOST_c2l(data, l);
70        X(4) = l;
71        R0(B, C, D, A, X(3), 22, 0xc1bdceeeL);
72        (void)HOST_c2l(data, l);
73        X(5) = l;
74        R0(A, B, C, D, X(4), 7, 0xf57c0fafL);
75        (void)HOST_c2l(data, l);
76        X(6) = l;
77        R0(D, A, B, C, X(5), 12, 0x4787c62aL);
78        (void)HOST_c2l(data, l);
79        X(7) = l;
80        R0(C, D, A, B, X(6), 17, 0xa8304613L);
81        (void)HOST_c2l(data, l);
82        X(8) = l;
83        R0(B, C, D, A, X(7), 22, 0xfd469501L);
84        (void)HOST_c2l(data, l);
85        X(9) = l;
86        R0(A, B, C, D, X(8), 7, 0x698098d8L);
87        (void)HOST_c2l(data, l);
88        X(10) = l;
89        R0(D, A, B, C, X(9), 12, 0x8b44f7afL);
90        (void)HOST_c2l(data, l);
91        X(11) = l;
92        R0(C, D, A, B, X(10), 17, 0xffff5bb1L);
93        (void)HOST_c2l(data, l);
94        X(12) = l;
95        R0(B, C, D, A, X(11), 22, 0x895cd7beL);
96        (void)HOST_c2l(data, l);
97        X(13) = l;
98        R0(A, B, C, D, X(12), 7, 0x6b901122L);
99        (void)HOST_c2l(data, l);
100        X(14) = l;
101        R0(D, A, B, C, X(13), 12, 0xfd987193L);
102        (void)HOST_c2l(data, l);
103        X(15) = l;
104        R0(C, D, A, B, X(14), 17, 0xa679438eL);
105        R0(B, C, D, A, X(15), 22, 0x49b40821L);
106        /* Round 1 */
107        R1(A, B, C, D, X(1), 5, 0xf61e2562L);
108        R1(D, A, B, C, X(6), 9, 0xc040b340L);
109        R1(C, D, A, B, X(11), 14, 0x265e5a51L);
110        R1(B, C, D, A, X(0), 20, 0xe9b6c7aaL);
111        R1(A, B, C, D, X(5), 5, 0xd62f105dL);
112        R1(D, A, B, C, X(10), 9, 0x02441453L);
113        R1(C, D, A, B, X(15), 14, 0xd8a1e681L);
114        R1(B, C, D, A, X(4), 20, 0xe7d3fbc8L);
115        R1(A, B, C, D, X(9), 5, 0x21e1cde6L);
116        R1(D, A, B, C, X(14), 9, 0xc33707d6L);
117        R1(C, D, A, B, X(3), 14, 0xf4d50d87L);
118        R1(B, C, D, A, X(8), 20, 0x455a14edL);
119        R1(A, B, C, D, X(13), 5, 0xa9e3e905L);
120        R1(D, A, B, C, X(2), 9, 0xfcefa3f8L);
121        R1(C, D, A, B, X(7), 14, 0x676f02d9L);
122        R1(B, C, D, A, X(12), 20, 0x8d2a4c8aL);
123        /* Round 2 */
124        R2(A, B, C, D, X(5), 4, 0xfffa3942L);
125        R2(D, A, B, C, X(8), 11, 0x8771f681L);
126        R2(C, D, A, B, X(11), 16, 0x6d9d6122L);
127        R2(B, C, D, A, X(14), 23, 0xfde5380cL);
128        R2(A, B, C, D, X(1), 4, 0xa4beea44L);
129        R2(D, A, B, C, X(4), 11, 0x4bdecfa9L);
130        R2(C, D, A, B, X(7), 16, 0xf6bb4b60L);
131        R2(B, C, D, A, X(10), 23, 0xbebfbc70L);
132        R2(A, B, C, D, X(13), 4, 0x289b7ec6L);
133        R2(D, A, B, C, X(0), 11, 0xeaa127faL);
134        R2(C, D, A, B, X(3), 16, 0xd4ef3085L);
135        R2(B, C, D, A, X(6), 23, 0x04881d05L);
136        R2(A, B, C, D, X(9), 4, 0xd9d4d039L);
137        R2(D, A, B, C, X(12), 11, 0xe6db99e5L);
138        R2(C, D, A, B, X(15), 16, 0x1fa27cf8L);
139        R2(B, C, D, A, X(2), 23, 0xc4ac5665L);
140        /* Round 3 */
141        R3(A, B, C, D, X(0), 6, 0xf4292244L);
142        R3(D, A, B, C, X(7), 10, 0x432aff97L);
143        R3(C, D, A, B, X(14), 15, 0xab9423a7L);
144        R3(B, C, D, A, X(5), 21, 0xfc93a039L);
145        R3(A, B, C, D, X(12), 6, 0x655b59c3L);
146        R3(D, A, B, C, X(3), 10, 0x8f0ccc92L);
147        R3(C, D, A, B, X(10), 15, 0xffeff47dL);
148        R3(B, C, D, A, X(1), 21, 0x85845dd1L);
149        R3(A, B, C, D, X(8), 6, 0x6fa87e4fL);
150        R3(D, A, B, C, X(15), 10, 0xfe2ce6e0L);
151        R3(C, D, A, B, X(6), 15, 0xa3014314L);
152        R3(B, C, D, A, X(13), 21, 0x4e0811a1L);
153        R3(A, B, C, D, X(4), 6, 0xf7537e82L);
154        R3(D, A, B, C, X(11), 10, 0xbd3af235L);
155        R3(C, D, A, B, X(2), 15, 0x2ad7d2bbL);
156        R3(B, C, D, A, X(9), 21, 0xeb86d391L);
157
158        A = c->A += A;
159        B = c->B += B;
160        C = c->C += C;
161        D = c->D += D;
162    }
163}
164#endif
165