1 | /* |
2 | * QEMU Crypto random number provider |
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 2.1 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 | |
23 | #include "crypto/random.h" |
24 | #include "qapi/error.h" |
25 | |
26 | #include <gnutls/gnutls.h> |
27 | #include <gnutls/crypto.h> |
28 | |
29 | int qcrypto_random_bytes(void *buf, |
30 | size_t buflen, |
31 | Error **errp) |
32 | { |
33 | int ret; |
34 | |
35 | ret = gnutls_rnd(GNUTLS_RND_RANDOM, buf, buflen); |
36 | |
37 | if (ret < 0) { |
38 | error_setg(errp, "Cannot get random bytes: %s" , |
39 | gnutls_strerror(ret)); |
40 | return -1; |
41 | } |
42 | |
43 | return 0; |
44 | } |
45 | |
46 | |
47 | int qcrypto_random_init(Error **errp G_GNUC_UNUSED) { return 0; } |
48 | |