1 files changed, 20 insertions, 0 deletions
diff --git a/lib/cookies/nonce.c b/lib/cookies/nonce.c
new file mode 100644
index 0000000..1b50d87
--- /dev/null
+++ b/lib/cookies/nonce.c
@@ -0,0 +1,20 @@
+/*  Copyright (C) CZ.NIC, z.s.p.o. <knot-resolver@labs.nic.cz>
+ *  SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include <libknot/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;
+	}
+
+	knot_wire_write_u32(buf, input->rand);
+	knot_wire_write_u32(buf + sizeof(uint32_t), input->time);
+	buf_len = 2 * sizeof(uint32_t);
+
+	return buf_len;
+}