44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/*
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* QEMU Crypto random number provider
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*
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* Copyright (c) 2015-2016 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "qemu/osdep.h"
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#include "crypto/random.h"
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#include <gnutls/gnutls.h>
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#include <gnutls/crypto.h>
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int qcrypto_random_bytes(uint8_t *buf,
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size_t buflen,
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Error **errp)
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{
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int ret;
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ret = gnutls_rnd(GNUTLS_RND_RANDOM, buf, buflen);
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if (ret < 0) {
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error_setg(errp, "Cannot get random bytes: %s",
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gnutls_strerror(ret));
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return -1;
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}
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return 0;
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}
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