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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#ifndef DNS_TSEC_H
#define DNS_TSEC_H 1
/*****
***** Module Info
*****/
/*! \file
*
* \brief
* The TSEC (Transaction Security) module is an abstraction layer for managing
* DNS transaction mechanisms such as TSIG or SIG(0). A TSEC structure is a
* mechanism-independent object containing key information specific to the
* mechanism, and is expected to be used as an argument to other modules
* that use transaction security in a mechanism-independent manner.
*
* MP:
*\li A TSEC structure is expected to be thread-specific. No inter-thread
* synchronization is ensured in multiple access to a single TSEC
* structure.
*
* Resources:
*\li TBS
*
* Security:
*\li This module does not handle any low-level data directly, and so no
* security issue specific to this module is anticipated.
*/
#include <dns/types.h>
#include <dst/dst.h>
ISC_LANG_BEGINDECLS
/***
*** Types
***/
/*%
* Transaction security types.
*/
typedef enum {
dns_tsectype_none,
dns_tsectype_tsig,
dns_tsectype_sig0
} dns_tsectype_t;
isc_result_t
dns_tsec_create(isc_mem_t *mctx, dns_tsectype_t type, dst_key_t *key,
dns_tsec_t **tsecp);
/*%<
* Create a TSEC structure and stores a type-dependent key structure in it.
* For a TSIG key (type is dns_tsectype_tsig), dns_tsec_create() creates a
* TSIG key structure from '*key' and keeps it in the structure. For other
* types, this function simply retains '*key' in the structure. In either
* case, the ownership of '*key' is transferred to the TSEC module; the caller
* must not modify or destroy it after the call to dns_tsec_create().
*
* Requires:
*
*\li 'mctx' is a valid memory context.
*
*\li 'type' is a valid value of dns_tsectype_t (see above).
*
*\li 'key' is a valid key.
*
*\li tsecp != NULL && *tsecp == NULL.
*
* Returns:
*
*\li #ISC_R_SUCCESS On success.
*
*\li Anything else Failure.
*/
void
dns_tsec_destroy(dns_tsec_t **tsecp);
/*%<
* Destroy the TSEC structure. The stored key is also detached or destroyed.
*
* Requires
*
*\li '*tsecp' is a valid TSEC structure.
*
* Ensures
*
*\li *tsecp == NULL.
*
*/
dns_tsectype_t
dns_tsec_gettype(dns_tsec_t *tsec);
/*%<
* Return the TSEC type of '*tsec'.
*
* Requires
*
*\li 'tsec' is a valid TSEC structure.
*
*/
void
dns_tsec_getkey(dns_tsec_t *tsec, void *keyp);
/*%<
* Return the TSEC key of '*tsec' in '*keyp'.
*
* Requires
*
*\li keyp != NULL
*
* Ensures
*
*\li *tsecp points to a valid key structure depending on the TSEC type.
*/
ISC_LANG_ENDDECLS
#endif /* DNS_TSEC_H */