44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
|
/*
|
||
|
|
* QEMU Crypto random number provider
|
||
|
|
*
|
||
|
|
* Copyright (c) 2015-2016 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 "crypto/random.h"
|
||
|
|
|
||
|
|
#include <gnutls/gnutls.h>
|
||
|
|
#include <gnutls/crypto.h>
|
||
|
|
|
||
|
|
int qcrypto_random_bytes(uint8_t *buf,
|
||
|
|
size_t buflen,
|
||
|
|
Error **errp)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = gnutls_rnd(GNUTLS_RND_RANDOM, buf, buflen);
|
||
|
|
|
||
|
|
if (ret < 0) {
|
||
|
|
error_setg(errp, "Cannot get random bytes: %s",
|
||
|
|
gnutls_strerror(ret));
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|