1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/* md2.c
*
* Copyright (C) 2006-2015 wolfSSL Inc.
*
* This file is part of wolfSSL. (formerly known as CyaSSL)
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <wolfssl/wolfcrypt/settings.h>
#ifdef WOLFSSL_MD2
#include <wolfssl/wolfcrypt/md2.h>
#include <wolfssl/wolfcrypt/error-crypt.h>
#ifdef NO_INLINE
#include <wolfssl/wolfcrypt/misc.h>
#else
#include <wolfcrypt/src/misc.c>
#endif
void wc_InitMd2(Md2* md2)
{
XMEMSET(md2->X, 0, MD2_X_SIZE);
XMEMSET(md2->C, 0, MD2_BLOCK_SIZE);
XMEMSET(md2->buffer, 0, MD2_BLOCK_SIZE);
md2->count = 0;
}
void wc_Md2Update(Md2* md2, const byte* data, word32 len)
{
static const byte S[256] =
{
41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6,
19, 98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188,
76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24,
138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251,
245, 142, 187, 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63,
148, 194, 16, 137, 11, 34, 95, 33, 128, 127, 93, 154, 90, 144, 50,
39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165,
181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210,
150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2, 27,
96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197,
234, 38, 44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65,
129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123,
8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233,
203, 213, 254, 59, 0, 29, 57, 242, 239, 183, 14, 102, 88, 208, 228,
166, 119, 114, 248, 235, 117, 75, 10, 49, 68, 80, 180, 143, 237,
31, 26, 219, 153, 141, 51, 159, 17, 131, 20
};
while (len) {
word32 L = (MD2_PAD_SIZE - md2->count) < len ?
(MD2_PAD_SIZE - md2->count) : len;
XMEMCPY(md2->buffer + md2->count, data, L);
md2->count += L;
data += L;
len -= L;
if (md2->count == MD2_PAD_SIZE) {
int i;
byte t;
md2->count = 0;
XMEMCPY(md2->X + MD2_PAD_SIZE, md2->buffer, MD2_PAD_SIZE);
t = md2->C[15];
for(i = 0; i < MD2_PAD_SIZE; i++) {
md2->X[32 + i] = md2->X[MD2_PAD_SIZE + i] ^ md2->X[i];
t = md2->C[i] ^= S[md2->buffer[i] ^ t];
}
t=0;
for(i = 0; i < 18; i++) {
int j;
for(j = 0; j < MD2_X_SIZE; j += 8) {
t = md2->X[j+0] ^= S[t];
t = md2->X[j+1] ^= S[t];
t = md2->X[j+2] ^= S[t];
t = md2->X[j+3] ^= S[t];
t = md2->X[j+4] ^= S[t];
t = md2->X[j+5] ^= S[t];
t = md2->X[j+6] ^= S[t];
t = md2->X[j+7] ^= S[t];
}
t = (t + i) & 0xFF;
}
}
}
}
void wc_Md2Final(Md2* md2, byte* hash)
{
byte padding[MD2_BLOCK_SIZE];
word32 padLen = MD2_PAD_SIZE - md2->count;
word32 i;
for (i = 0; i < padLen; i++)
padding[i] = (byte)padLen;
wc_Md2Update(md2, padding, padLen);
wc_Md2Update(md2, md2->C, MD2_BLOCK_SIZE);
XMEMCPY(hash, md2->X, MD2_DIGEST_SIZE);
wc_InitMd2(md2);
}
int wc_Md2Hash(const byte* data, word32 len, byte* hash)
{
#ifdef WOLFSSL_SMALL_STACK
Md2* md2;
#else
Md2 md2[1];
#endif
#ifdef WOLFSSL_SMALL_STACK
md2 = (Md2*)XMALLOC(sizeof(Md2), NULL, DYNAMIC_TYPE_TMP_BUFFER);
if (md2 == NULL)
return MEMORY_E;
#endif
wc_InitMd2(md2);
wc_Md2Update(md2, data, len);
wc_Md2Final(md2, hash);
#ifdef WOLFSSL_SMALL_STACK
XFREE(md2, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
return 0;
}
#endif /* WOLFSSL_MD2 */
|
