1 files changed, 42 insertions, 0 deletions
diff --git a/lib/dnssec/signature.h b/lib/dnssec/signature.h
new file mode 100644
index 0000000..b756483
--- /dev/null
+++ b/lib/dnssec/signature.h
@@ -0,0 +1,42 @@
+/*  Copyright (C) 2015-2017 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/>.
+ */
+
+#pragma once
+
+#include <libdnssec/key.h>
+#include <libknot/rrset.h>
+
+/**
+ * Performs referral authentication according to RFC4035 5.2, bullet 2
+ * @param ref Referral RRSet. Currently only DS can be used.
+ * @param key Already parsed key.
+ * @return    0 or error code.  In particular: DNSSEC_INVALID_DS_ALGORITHM
+ *            in case *all* DSs in ref use an unimplemented algorithm.
+ */
+int kr_authenticate_referral(const knot_rrset_t *ref, const dnssec_key_t *key);
+
+/**
+ * Check the signature of the supplied RRSet.
+ * @param rrsigs      RRSet containing signatures.
+ * @param pos         Index of the signature record in the signature RRSet.
+ * @param key         Key to be used to validate the signature.
+ * @param covered     The covered RRSet.
+ * @param trim_labels Number of the leftmost labels to be removed and replaced with '*.'.
+ * @return            0 if signature valid, error code else.
+ */
+int kr_check_signature(const knot_rdata_t *rrsig,
+                       const dnssec_key_t *key, const knot_rrset_t *covered,
+                       int trim_labels);