1 files changed, 53 insertions, 0 deletions
diff --git a/src/libdnssec/random.c b/src/libdnssec/random.c
new file mode 100644
index 0000000..30b0c2d
--- /dev/null
+++ b/src/libdnssec/random.c
@@ -0,0 +1,53 @@
+/*  Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <assert.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "libdnssec/error.h"
+#include "libdnssec/random.h"
+#include "libdnssec/shared/shared.h"
+
+/* -- public API ----------------------------------------------------------- */
+
+_public_
+int dnssec_random_buffer(uint8_t *data, size_t size)
+{
+	if (!data) {
+		return DNSSEC_EINVAL;
+	}
+
+	int result = gnutls_rnd(GNUTLS_RND_RANDOM, data, size);
+	if (result != 0) {
+		assert_unreachable();
+		return DNSSEC_ERROR;
+	}
+
+	return DNSSEC_EOK;
+}
+
+_public_
+int dnssec_random_binary(dnssec_binary_t *binary)
+{
+	if (!binary) {
+		return DNSSEC_EINVAL;
+	}
+
+	return dnssec_random_buffer(binary->data, binary->size);
+}