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-rw-r--r--src/libdnssec/key/convert.h44
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diff --git a/src/libdnssec/key/convert.h b/src/libdnssec/key/convert.h
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+/* 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 <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <gnutls/abstract.h>
+
+#include "libdnssec/binary.h"
+#include "libdnssec/key.h"
+
+/*!
+ * Encode public key into the format used in DNSKEY RDATA.
+ *
+ * \param[in] key Public key to be encoded.
+ * \param[out] rdata Encoded key (allocated).
+ *
+ * \return Error code, DNSSEC_EOK if successful.
+ */
+int convert_pubkey_to_dnskey(gnutls_pubkey_t key, dnssec_binary_t *rdata);
+
+/*!
+ * Create public key from the format encoded in DNSKEY RDATA.
+ *
+ * \param[in] algorithm DNSSEC algorithm identification.
+ * \param[in] rdata Public key in DNSKEY RDATA format.
+ * \param[out] key GnuTLS public key (initialized).
+ *
+ * \return Error code, DNSSEC_EOK if successful.
+ */
+int convert_dnskey_to_pubkey(uint8_t algorithm, const dnssec_binary_t *rdata,
+ gnutls_pubkey_t key);