1 files changed, 92 insertions, 0 deletions
diff --git a/src/libknot/tsig.h b/src/libknot/tsig.h
new file mode 100644
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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 <http://www.gnu.org/licenses/>.
+*/
+/*!
+ * \file
+ *
+ * \brief TSIG operations
+ *
+ * \addtogroup knot-tsig
+ * @{
+ */
+
+#pragma once
+
+#include "libknot/dname.h"
+#include "libdnssec/tsig.h"
+
+/*!
+ * \brief TSIG key.
+ */
+struct knot_tsig_key {
+	dnssec_tsig_algorithm_t algorithm;
+	knot_dname_t *name;
+	dnssec_binary_t secret;
+};
+typedef struct knot_tsig_key knot_tsig_key_t;
+
+/*!
+ * \brief Packet signing context.
+ */
+typedef struct knot_sign_context {
+	knot_tsig_key_t tsig_key;
+	uint8_t *tsig_buf;
+	uint8_t *tsig_digest;
+	size_t tsig_buflen;
+	size_t tsig_digestlen;
+	uint8_t tsig_runlen;
+	uint64_t tsig_time_signed;
+	size_t pkt_count;
+} knot_sign_context_t;
+
+/*!
+ * \brief Initialize a new TSIG key from individual key parameters.
+ *
+ * \param[out] key         Key to be initialized.
+ * \param[in]  algorithm   Algorithm name. NULL for default (hmac-md5).
+ * \param[in]  name        Key name (domain name in presentation format).
+ * \param[in]  secret_b64  Secret encoded using Base 64.
+ *
+ * \return Error code, KNOT_EOK if successful.
+ */
+int knot_tsig_key_init(knot_tsig_key_t *key, const char *algorithm,
+                       const char *name, const char *secret_b64);
+
+/*!
+ * \brief Create a new TSIG key from a string encoding all parameters.
+ *
+ * \param[out] key     Key to be initialized.
+ * \param[in]  params  Parameters in a form \a [algorithm:]name:base64_secret
+ */
+int knot_tsig_key_init_str(knot_tsig_key_t *key, const char *params);
+
+/*!
+ * \brief Create a new TSIG key by reading the parameters from a file.
+ *
+ * The file content is parsed by \a tsig_key_create_str.
+ */
+int knot_tsig_key_init_file(knot_tsig_key_t *key, const char *filename);
+
+/*!
+ * \brief Deinitialize TSIG key.
+ */
+void knot_tsig_key_deinit(knot_tsig_key_t *key);
+
+/*!
+ * \brief Duplicate a TSIG key.
+ */
+int knot_tsig_key_copy(knot_tsig_key_t *dst, const knot_tsig_key_t *src);
+
+/*! @} */