net/net: Add SocketReadState for reuse codes
[qemu.git] / crypto / pbkdf-nettle.c
1 /*
2 * QEMU Crypto PBKDF support (Password-Based Key Derivation Function)
3 *
4 * Copyright (c) 2015-2016 Red Hat, Inc.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 *
19 */
20
21 #include "qemu/osdep.h"
22 #include "qapi/error.h"
23 #include "crypto/pbkdf.h"
24 #include "nettle/pbkdf2.h"
25
26
27 bool qcrypto_pbkdf2_supports(QCryptoHashAlgorithm hash)
28 {
29 switch (hash) {
30 case QCRYPTO_HASH_ALG_SHA1:
31 case QCRYPTO_HASH_ALG_SHA256:
32 return true;
33 default:
34 return false;
35 }
36 }
37
38 int qcrypto_pbkdf2(QCryptoHashAlgorithm hash,
39 const uint8_t *key, size_t nkey,
40 const uint8_t *salt, size_t nsalt,
41 unsigned int iterations,
42 uint8_t *out, size_t nout,
43 Error **errp)
44 {
45 switch (hash) {
46 case QCRYPTO_HASH_ALG_SHA1:
47 pbkdf2_hmac_sha1(nkey, key,
48 iterations,
49 nsalt, salt,
50 nout, out);
51 break;
52
53 case QCRYPTO_HASH_ALG_SHA256:
54 pbkdf2_hmac_sha256(nkey, key,
55 iterations,
56 nsalt, salt,
57 nout, out);
58 break;
59
60 default:
61 error_setg_errno(errp, ENOSYS,
62 "PBKDF does not support hash algorithm %d", hash);
63 return -1;
64 }
65 return 0;
66 }