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https://origsvn.digium.com/svn/asterisk/branches/10 ........ r336936 | irroot | 2011-09-20 18:51:59 +0200 (Tue, 20 Sep 2011) | 14 lines Allow Setting Auth Tag Bit length Based on invite or config option Update the SIP SRTP API to allow use of 32 or 80 bit taglen. Curently only 80 bit is supported. The outgoing invite will use the taglen of the incoming invite preventing one-way audio. (Closes issue ASTERISK-17895) Review: https://reviewboard.asterisk.org/r/1173/ ........ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@336937 65c4cc65-6c06-0410-ace0-fbb531ad65f3
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2006 - 2007, Mikael Magnusson
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*
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* Mikael Magnusson <mikma@users.sourceforge.net>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file sdp_crypto.h
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*
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* \brief SDP Security descriptions
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*
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* Specified in RFC 4568
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*
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* \author Mikael Magnusson <mikma@users.sourceforge.net>
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*/
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#ifndef _SDP_CRYPTO_H
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#define _SDP_CRYPTO_H
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#include <asterisk/rtp_engine.h>
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struct sdp_crypto;
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struct sip_srtp;
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/*! \brief Initialize an return an sdp_crypto struct
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*
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* \details
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* This function allocates a new sdp_crypto struct and initializes its values
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*
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* \retval NULL on failure
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* \retval a pointer to a new sdp_crypto structure
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*/
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struct sdp_crypto *sdp_crypto_setup(void);
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/*! \brief Destroy a previously allocated sdp_crypto struct */
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void sdp_crypto_destroy(struct sdp_crypto *crypto);
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/*! \brief Parse the a=crypto line from SDP and set appropriate values on the
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* sdp_crypto struct.
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*
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* \param p A valid sdp_crypto struct
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* \param attr the a:crypto line from SDP
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* \param rtp The rtp instance associated with the SDP being parsed
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* \param srtp SRTP structure
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*
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* \retval 0 success
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* \retval nonzero failure
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*/
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int sdp_crypto_process(struct sdp_crypto *p, const char *attr, struct ast_rtp_instance *rtp, struct sip_srtp *srtp);
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/*! \brief Generate an SRTP a=crypto offer
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*
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* \details
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* The offer is stored on the sdp_crypto struct in a_crypto
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*
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* \param A valid sdp_crypto struct
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*
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* \retval 0 success
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* \retval nonzero failure
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*/
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int sdp_crypto_offer(struct sdp_crypto *p, int taglen);
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/*! \brief Return the a_crypto value of the sdp_crypto struct
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*
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* \param p An sdp_crypto struct that has had sdp_crypto_offer called
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*
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* \retval The value of the a_crypto for p
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*/
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const char *sdp_crypto_attrib(struct sdp_crypto *p);
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#endif /* _SDP_CRYPTO_H */
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