xref: /openssl/crypto/md5/md5_dgst.c (revision 33388b44)
1 /*
2  * Copyright 1995-2020 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 /*
11  * MD5 low level APIs are deprecated for public use, but still ok for
12  * internal use.
13  */
14 #include "internal/deprecated.h"
15 
16 #include <stdio.h>
17 #include "md5_local.h"
18 #include <openssl/opensslv.h>
19 
20 /*
21  * Implemented from RFC1321 The MD5 Message-Digest Algorithm
22  */
23 
24 #define INIT_DATA_A (unsigned long)0x67452301L
25 #define INIT_DATA_B (unsigned long)0xefcdab89L
26 #define INIT_DATA_C (unsigned long)0x98badcfeL
27 #define INIT_DATA_D (unsigned long)0x10325476L
28 
MD5_Init(MD5_CTX * c)29 int MD5_Init(MD5_CTX *c)
30 {
31     memset(c, 0, sizeof(*c));
32     c->A = INIT_DATA_A;
33     c->B = INIT_DATA_B;
34     c->C = INIT_DATA_C;
35     c->D = INIT_DATA_D;
36     return 1;
37 }
38 
39 #ifndef md5_block_data_order
40 # ifdef X
41 #  undef X
42 # endif
md5_block_data_order(MD5_CTX * c,const void * data_,size_t num)43 void md5_block_data_order(MD5_CTX *c, const void *data_, size_t num)
44 {
45     const unsigned char *data = data_;
46     register unsigned MD32_REG_T A, B, C, D, l;
47 # ifndef MD32_XARRAY
48     /* See comment in crypto/sha/sha_local.h for details. */
49     unsigned MD32_REG_T XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
50         XX8, XX9, XX10, XX11, XX12, XX13, XX14, XX15;
51 #  define X(i)   XX##i
52 # else
53     MD5_LONG XX[MD5_LBLOCK];
54 #  define X(i)   XX[i]
55 # endif
56 
57     A = c->A;
58     B = c->B;
59     C = c->C;
60     D = c->D;
61 
62     for (; num--;) {
63         (void)HOST_c2l(data, l);
64         X(0) = l;
65         (void)HOST_c2l(data, l);
66         X(1) = l;
67         /* Round 0 */
68         R0(A, B, C, D, X(0), 7, 0xd76aa478L);
69         (void)HOST_c2l(data, l);
70         X(2) = l;
71         R0(D, A, B, C, X(1), 12, 0xe8c7b756L);
72         (void)HOST_c2l(data, l);
73         X(3) = l;
74         R0(C, D, A, B, X(2), 17, 0x242070dbL);
75         (void)HOST_c2l(data, l);
76         X(4) = l;
77         R0(B, C, D, A, X(3), 22, 0xc1bdceeeL);
78         (void)HOST_c2l(data, l);
79         X(5) = l;
80         R0(A, B, C, D, X(4), 7, 0xf57c0fafL);
81         (void)HOST_c2l(data, l);
82         X(6) = l;
83         R0(D, A, B, C, X(5), 12, 0x4787c62aL);
84         (void)HOST_c2l(data, l);
85         X(7) = l;
86         R0(C, D, A, B, X(6), 17, 0xa8304613L);
87         (void)HOST_c2l(data, l);
88         X(8) = l;
89         R0(B, C, D, A, X(7), 22, 0xfd469501L);
90         (void)HOST_c2l(data, l);
91         X(9) = l;
92         R0(A, B, C, D, X(8), 7, 0x698098d8L);
93         (void)HOST_c2l(data, l);
94         X(10) = l;
95         R0(D, A, B, C, X(9), 12, 0x8b44f7afL);
96         (void)HOST_c2l(data, l);
97         X(11) = l;
98         R0(C, D, A, B, X(10), 17, 0xffff5bb1L);
99         (void)HOST_c2l(data, l);
100         X(12) = l;
101         R0(B, C, D, A, X(11), 22, 0x895cd7beL);
102         (void)HOST_c2l(data, l);
103         X(13) = l;
104         R0(A, B, C, D, X(12), 7, 0x6b901122L);
105         (void)HOST_c2l(data, l);
106         X(14) = l;
107         R0(D, A, B, C, X(13), 12, 0xfd987193L);
108         (void)HOST_c2l(data, l);
109         X(15) = l;
110         R0(C, D, A, B, X(14), 17, 0xa679438eL);
111         R0(B, C, D, A, X(15), 22, 0x49b40821L);
112         /* Round 1 */
113         R1(A, B, C, D, X(1), 5, 0xf61e2562L);
114         R1(D, A, B, C, X(6), 9, 0xc040b340L);
115         R1(C, D, A, B, X(11), 14, 0x265e5a51L);
116         R1(B, C, D, A, X(0), 20, 0xe9b6c7aaL);
117         R1(A, B, C, D, X(5), 5, 0xd62f105dL);
118         R1(D, A, B, C, X(10), 9, 0x02441453L);
119         R1(C, D, A, B, X(15), 14, 0xd8a1e681L);
120         R1(B, C, D, A, X(4), 20, 0xe7d3fbc8L);
121         R1(A, B, C, D, X(9), 5, 0x21e1cde6L);
122         R1(D, A, B, C, X(14), 9, 0xc33707d6L);
123         R1(C, D, A, B, X(3), 14, 0xf4d50d87L);
124         R1(B, C, D, A, X(8), 20, 0x455a14edL);
125         R1(A, B, C, D, X(13), 5, 0xa9e3e905L);
126         R1(D, A, B, C, X(2), 9, 0xfcefa3f8L);
127         R1(C, D, A, B, X(7), 14, 0x676f02d9L);
128         R1(B, C, D, A, X(12), 20, 0x8d2a4c8aL);
129         /* Round 2 */
130         R2(A, B, C, D, X(5), 4, 0xfffa3942L);
131         R2(D, A, B, C, X(8), 11, 0x8771f681L);
132         R2(C, D, A, B, X(11), 16, 0x6d9d6122L);
133         R2(B, C, D, A, X(14), 23, 0xfde5380cL);
134         R2(A, B, C, D, X(1), 4, 0xa4beea44L);
135         R2(D, A, B, C, X(4), 11, 0x4bdecfa9L);
136         R2(C, D, A, B, X(7), 16, 0xf6bb4b60L);
137         R2(B, C, D, A, X(10), 23, 0xbebfbc70L);
138         R2(A, B, C, D, X(13), 4, 0x289b7ec6L);
139         R2(D, A, B, C, X(0), 11, 0xeaa127faL);
140         R2(C, D, A, B, X(3), 16, 0xd4ef3085L);
141         R2(B, C, D, A, X(6), 23, 0x04881d05L);
142         R2(A, B, C, D, X(9), 4, 0xd9d4d039L);
143         R2(D, A, B, C, X(12), 11, 0xe6db99e5L);
144         R2(C, D, A, B, X(15), 16, 0x1fa27cf8L);
145         R2(B, C, D, A, X(2), 23, 0xc4ac5665L);
146         /* Round 3 */
147         R3(A, B, C, D, X(0), 6, 0xf4292244L);
148         R3(D, A, B, C, X(7), 10, 0x432aff97L);
149         R3(C, D, A, B, X(14), 15, 0xab9423a7L);
150         R3(B, C, D, A, X(5), 21, 0xfc93a039L);
151         R3(A, B, C, D, X(12), 6, 0x655b59c3L);
152         R3(D, A, B, C, X(3), 10, 0x8f0ccc92L);
153         R3(C, D, A, B, X(10), 15, 0xffeff47dL);
154         R3(B, C, D, A, X(1), 21, 0x85845dd1L);
155         R3(A, B, C, D, X(8), 6, 0x6fa87e4fL);
156         R3(D, A, B, C, X(15), 10, 0xfe2ce6e0L);
157         R3(C, D, A, B, X(6), 15, 0xa3014314L);
158         R3(B, C, D, A, X(13), 21, 0x4e0811a1L);
159         R3(A, B, C, D, X(4), 6, 0xf7537e82L);
160         R3(D, A, B, C, X(11), 10, 0xbd3af235L);
161         R3(C, D, A, B, X(2), 15, 0x2ad7d2bbL);
162         R3(B, C, D, A, X(9), 21, 0xeb86d391L);
163 
164         A = c->A += A;
165         B = c->B += B;
166         C = c->C += C;
167         D = c->D += D;
168     }
169 }
170 #endif
171