1 files changed, 34 insertions, 0 deletions
diff --git a/lib/cookies/nonce.c b/lib/cookies/nonce.c
new file mode 100644
index 0000000..4ad72c8
--- /dev/null
+++ b/lib/cookies/nonce.c
@@ -0,0 +1,34 @@
+/*  Copyright (C) 2016-2017 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+
+#include "contrib/wire.h"
+#include "lib/cookies/nonce.h"
+
+uint16_t kr_nonce_write_wire(uint8_t *buf, uint16_t buf_len,
+                             const struct kr_nonce_input *input)
+{
+	if (!buf || buf_len < KR_NONCE_LEN || !input) {
+		return 0;
+	}
+
+	wire_write_u32(buf, input->rand);
+	wire_write_u32(buf + sizeof(uint32_t), input->time);
+	buf_len = 2 * sizeof(uint32_t);
+
+	return buf_len;
+}