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
|
/*
* QEMU Crypto hash algorithms
*
* Copyright (c) 2024 Seagate Technology LLC and/or its Affiliates
* Copyright (c) 2021 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 2.1 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 <gnutls/crypto.h>
#include "qapi/error.h"
#include "crypto/hash.h"
#include "hashpriv.h"
static int qcrypto_hash_alg_map[QCRYPTO_HASH_ALGO__MAX] = {
[QCRYPTO_HASH_ALGO_MD5] = GNUTLS_DIG_MD5,
[QCRYPTO_HASH_ALGO_SHA1] = GNUTLS_DIG_SHA1,
[QCRYPTO_HASH_ALGO_SHA224] = GNUTLS_DIG_SHA224,
[QCRYPTO_HASH_ALGO_SHA256] = GNUTLS_DIG_SHA256,
[QCRYPTO_HASH_ALGO_SHA384] = GNUTLS_DIG_SHA384,
[QCRYPTO_HASH_ALGO_SHA512] = GNUTLS_DIG_SHA512,
[QCRYPTO_HASH_ALGO_RIPEMD160] = GNUTLS_DIG_RMD160,
};
gboolean qcrypto_hash_supports(QCryptoHashAlgo alg)
{
size_t i;
const gnutls_digest_algorithm_t *algs;
if (alg >= G_N_ELEMENTS(qcrypto_hash_alg_map) ||
qcrypto_hash_alg_map[alg] == GNUTLS_DIG_UNKNOWN) {
return false;
}
algs = gnutls_digest_list();
for (i = 0; algs[i] != GNUTLS_DIG_UNKNOWN; i++) {
if (algs[i] == qcrypto_hash_alg_map[alg]) {
return true;
}
}
return false;
}
static
QCryptoHash *qcrypto_gnutls_hash_new(QCryptoHashAlgo alg, Error **errp)
{
QCryptoHash *hash;
int ret;
hash = g_new(QCryptoHash, 1);
hash->alg = alg;
hash->opaque = g_new(gnutls_hash_hd_t, 1);
ret = gnutls_hash_init(hash->opaque, qcrypto_hash_alg_map[alg]);
if (ret < 0) {
error_setg(errp,
"Unable to initialize hash algorithm: %s",
gnutls_strerror(ret));
g_free(hash->opaque);
g_free(hash);
return NULL;
}
return hash;
}
static
void qcrypto_gnutls_hash_free(QCryptoHash *hash)
{
gnutls_hash_hd_t *ctx = hash->opaque;
gnutls_hash_deinit(*ctx, NULL);
g_free(ctx);
g_free(hash);
}
static
int qcrypto_gnutls_hash_update(QCryptoHash *hash,
const struct iovec *iov,
size_t niov,
Error **errp)
{
int ret = 0;
gnutls_hash_hd_t *ctx = hash->opaque;
for (int i = 0; i < niov; i++) {
ret = gnutls_hash(*ctx, iov[i].iov_base, iov[i].iov_len);
if (ret != 0) {
error_setg(errp, "Failed to hash data: %s",
gnutls_strerror(ret));
return -1;
}
}
return 0;
}
static
int qcrypto_gnutls_hash_finalize(QCryptoHash *hash,
uint8_t **result,
size_t *result_len,
Error **errp)
{
gnutls_hash_hd_t *ctx = hash->opaque;
*result_len = gnutls_hash_get_len(qcrypto_hash_alg_map[hash->alg]);
if (*result_len == 0) {
error_setg(errp, "Unable to get hash length");
return -1;
}
*result = g_new(uint8_t, *result_len);
gnutls_hash_output(*ctx, *result);
return 0;
}
QCryptoHashDriver qcrypto_hash_lib_driver = {
.hash_new = qcrypto_gnutls_hash_new,
.hash_update = qcrypto_gnutls_hash_update,
.hash_finalize = qcrypto_gnutls_hash_finalize,
.hash_free = qcrypto_gnutls_hash_free,
};
|