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-rw-r--r--crypto/random-gnutls.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/crypto/random-gnutls.c b/crypto/random-gnutls.c
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+++ b/crypto/random-gnutls.c
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+/*
+ * 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;
+}