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
|
/*
* QEMU Crypto hash algorithms
*
* Copyright (c) 2015 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "crypto/hash.h"
#include "hashpriv.h"
static size_t qcrypto_hash_alg_size[QCRYPTO_HASH_ALG__MAX] = {
[QCRYPTO_HASH_ALG_MD5] = 16,
[QCRYPTO_HASH_ALG_SHA1] = 20,
[QCRYPTO_HASH_ALG_SHA224] = 28,
[QCRYPTO_HASH_ALG_SHA256] = 32,
[QCRYPTO_HASH_ALG_SHA384] = 48,
[QCRYPTO_HASH_ALG_SHA512] = 64,
[QCRYPTO_HASH_ALG_RIPEMD160] = 20,
};
size_t qcrypto_hash_digest_len(QCryptoHashAlgorithm alg)
{
assert(alg < G_N_ELEMENTS(qcrypto_hash_alg_size));
return qcrypto_hash_alg_size[alg];
}
int qcrypto_hash_bytesv(QCryptoHashAlgorithm alg,
const struct iovec *iov,
size_t niov,
uint8_t **result,
size_t *resultlen,
Error **errp)
{
#ifdef CONFIG_AF_ALG
int ret;
ret = qcrypto_hash_afalg_driver.hash_bytesv(alg, iov, niov,
result, resultlen,
errp);
if (ret == 0) {
return ret;
}
/*
* TODO:
* Maybe we should treat some afalg errors as fatal
*/
error_free(*errp);
#endif
return qcrypto_hash_lib_driver.hash_bytesv(alg, iov, niov,
result, resultlen,
errp);
}
int qcrypto_hash_bytes(QCryptoHashAlgorithm alg,
const char *buf,
size_t len,
uint8_t **result,
size_t *resultlen,
Error **errp)
{
struct iovec iov = { .iov_base = (char *)buf,
.iov_len = len };
return qcrypto_hash_bytesv(alg, &iov, 1, result, resultlen, errp);
}
static const char hex[] = "0123456789abcdef";
int qcrypto_hash_digestv(QCryptoHashAlgorithm alg,
const struct iovec *iov,
size_t niov,
char **digest,
Error **errp)
{
uint8_t *result = NULL;
size_t resultlen = 0;
size_t i;
if (qcrypto_hash_bytesv(alg, iov, niov, &result, &resultlen, errp) < 0) {
return -1;
}
*digest = g_new0(char, (resultlen * 2) + 1);
for (i = 0 ; i < resultlen ; i++) {
(*digest)[(i * 2)] = hex[(result[i] >> 4) & 0xf];
(*digest)[(i * 2) + 1] = hex[result[i] & 0xf];
}
(*digest)[resultlen * 2] = '\0';
g_free(result);
return 0;
}
int qcrypto_hash_digest(QCryptoHashAlgorithm alg,
const char *buf,
size_t len,
char **digest,
Error **errp)
{
struct iovec iov = { .iov_base = (char *)buf, .iov_len = len };
return qcrypto_hash_digestv(alg, &iov, 1, digest, errp);
}
int qcrypto_hash_base64v(QCryptoHashAlgorithm alg,
const struct iovec *iov,
size_t niov,
char **base64,
Error **errp)
{
uint8_t *result = NULL;
size_t resultlen = 0;
if (qcrypto_hash_bytesv(alg, iov, niov, &result, &resultlen, errp) < 0) {
return -1;
}
*base64 = g_base64_encode(result, resultlen);
g_free(result);
return 0;
}
int qcrypto_hash_base64(QCryptoHashAlgorithm alg,
const char *buf,
size_t len,
char **base64,
Error **errp)
{
struct iovec iov = { .iov_base = (char *)buf, .iov_len = len };
return qcrypto_hash_base64v(alg, &iov, 1, base64, errp);
}
|
