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_local.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
23int 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
37void 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_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 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
148