xref: /openssl/crypto/md4/md4_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  * MD4 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 <openssl/opensslv.h>
18 #include "md4_local.h"
19 
20 /*
21  * Implemented from RFC1186 The MD4 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 
MD4_Init(MD4_CTX * c)29 int MD4_Init(MD4_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 md4_block_data_order
40 # ifdef X
41 #  undef X
42 # endif
md4_block_data_order(MD4_CTX * c,const void * data_,size_t num)43 void md4_block_data_order(MD4_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     MD4_LONG XX[MD4_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), 3, 0);
69         (void)HOST_c2l(data, l);
70         X(2) = l;
71         R0(D, A, B, C, X(1), 7, 0);
72         (void)HOST_c2l(data, l);
73         X(3) = l;
74         R0(C, D, A, B, X(2), 11, 0);
75         (void)HOST_c2l(data, l);
76         X(4) = l;
77         R0(B, C, D, A, X(3), 19, 0);
78         (void)HOST_c2l(data, l);
79         X(5) = l;
80         R0(A, B, C, D, X(4), 3, 0);
81         (void)HOST_c2l(data, l);
82         X(6) = l;
83         R0(D, A, B, C, X(5), 7, 0);
84         (void)HOST_c2l(data, l);
85         X(7) = l;
86         R0(C, D, A, B, X(6), 11, 0);
87         (void)HOST_c2l(data, l);
88         X(8) = l;
89         R0(B, C, D, A, X(7), 19, 0);
90         (void)HOST_c2l(data, l);
91         X(9) = l;
92         R0(A, B, C, D, X(8), 3, 0);
93         (void)HOST_c2l(data, l);
94         X(10) = l;
95         R0(D, A, B, C, X(9), 7, 0);
96         (void)HOST_c2l(data, l);
97         X(11) = l;
98         R0(C, D, A, B, X(10), 11, 0);
99         (void)HOST_c2l(data, l);
100         X(12) = l;
101         R0(B, C, D, A, X(11), 19, 0);
102         (void)HOST_c2l(data, l);
103         X(13) = l;
104         R0(A, B, C, D, X(12), 3, 0);
105         (void)HOST_c2l(data, l);
106         X(14) = l;
107         R0(D, A, B, C, X(13), 7, 0);
108         (void)HOST_c2l(data, l);
109         X(15) = l;
110         R0(C, D, A, B, X(14), 11, 0);
111         R0(B, C, D, A, X(15), 19, 0);
112         /* Round 1 */
113         R1(A, B, C, D, X(0), 3, 0x5A827999L);
114         R1(D, A, B, C, X(4), 5, 0x5A827999L);
115         R1(C, D, A, B, X(8), 9, 0x5A827999L);
116         R1(B, C, D, A, X(12), 13, 0x5A827999L);
117         R1(A, B, C, D, X(1), 3, 0x5A827999L);
118         R1(D, A, B, C, X(5), 5, 0x5A827999L);
119         R1(C, D, A, B, X(9), 9, 0x5A827999L);
120         R1(B, C, D, A, X(13), 13, 0x5A827999L);
121         R1(A, B, C, D, X(2), 3, 0x5A827999L);
122         R1(D, A, B, C, X(6), 5, 0x5A827999L);
123         R1(C, D, A, B, X(10), 9, 0x5A827999L);
124         R1(B, C, D, A, X(14), 13, 0x5A827999L);
125         R1(A, B, C, D, X(3), 3, 0x5A827999L);
126         R1(D, A, B, C, X(7), 5, 0x5A827999L);
127         R1(C, D, A, B, X(11), 9, 0x5A827999L);
128         R1(B, C, D, A, X(15), 13, 0x5A827999L);
129         /* Round 2 */
130         R2(A, B, C, D, X(0), 3, 0x6ED9EBA1L);
131         R2(D, A, B, C, X(8), 9, 0x6ED9EBA1L);
132         R2(C, D, A, B, X(4), 11, 0x6ED9EBA1L);
133         R2(B, C, D, A, X(12), 15, 0x6ED9EBA1L);
134         R2(A, B, C, D, X(2), 3, 0x6ED9EBA1L);
135         R2(D, A, B, C, X(10), 9, 0x6ED9EBA1L);
136         R2(C, D, A, B, X(6), 11, 0x6ED9EBA1L);
137         R2(B, C, D, A, X(14), 15, 0x6ED9EBA1L);
138         R2(A, B, C, D, X(1), 3, 0x6ED9EBA1L);
139         R2(D, A, B, C, X(9), 9, 0x6ED9EBA1L);
140         R2(C, D, A, B, X(5), 11, 0x6ED9EBA1L);
141         R2(B, C, D, A, X(13), 15, 0x6ED9EBA1L);
142         R2(A, B, C, D, X(3), 3, 0x6ED9EBA1L);
143         R2(D, A, B, C, X(11), 9, 0x6ED9EBA1L);
144         R2(C, D, A, B, X(7), 11, 0x6ED9EBA1L);
145         R2(B, C, D, A, X(15), 15, 0x6ED9EBA1L);
146 
147         A = c->A += A;
148         B = c->B += B;
149         C = c->C += C;
150         D = c->D += D;
151     }
152 }
153 #endif
154