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Update include/mbedtls/config.h

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Co-authored-by: Hanno Becker <hanno.becker@arm.com>
Signed-off-by: Johan Pascal <johan.pascal@belledonne-communications.com>
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Johan Pascal 2020-09-23 13:34:40 +02:00 committed by Johan Pascal
parent 77696eedac
commit 842d671316
1 changed files with 21 additions and 4 deletions
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25
include/mbedtls/config.h
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@ -1815,10 +1815,27 @@
/**
* \def MBEDTLS_SSL_DTLS_SRTP
*
* Enable support for DTLS-SRTP, RFC5764, use_srtp extension.
* \note Only the dtls-srtp key material negotiation is supported.
* Once negotiated, the key should be extracted using mbedtls_ssl_tls_prf()
* and data should be transmitted via an SRTP stack.
* Enable support for negotation of DTLS-SRTP (RFC 5764)
* through the use_srtp extension.
*
* \note This feature provides the minimum functionality required
* to negotiate the use of DTLS-SRTP and to allow the derivation of
* the associated SRTP packet protection key material.
* In particular, the SRTP packet protection itself, as well as the
* demultiplexing of RTP and DTLS packets at the datagram layer
* (see Section 5 of RFC 5764), are not handled by this feature.
* Instead, after successful completion of a handshake negotiating
* the use of DTLS-SRTP, the extended key exporter API
* mbedtls_ssl_conf_export_keys_ext_cb() should be used to implement
* the key exporter described in Section 4.2 of RFC 5764 and RFC 5705
* (this is implemented in the SSL example programs).
* The resulting key should then be passed to an SRTP stack.
*
* Setting this option enables the runtime API
* mbedtls_ssl_conf_dtls_srtp_protection_profiles()
* through which the supported DTLS-SRTP protection
* profiles can be configured. You must call this API at
* runtime if you wish to negotiate the use of DTLS-SRTP.
*
* Requires: MBEDTLS_SSL_PROTO_DTLS
*