[rtcweb] About DTLS-SRTP-EKT and key changes
Iñaki Baz Castillo <ibc@aliax.net> Wed, 28 March 2012 17:50 UTC
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From: Iñaki Baz Castillo <ibc@aliax.net>
Date: Wed, 28 Mar 2012 19:43:10 +0200
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Subject: [rtcweb] About DTLS-SRTP-EKT and key changes
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Hi all, this is probably a very easy question: In slide 34 in http://tools.ietf.org/agenda/83/slides/slides-83-rtcweb-3.pdf, there is a new EKT key from the WebRTC endpoint, and in slide 35 there is a re-INVITE from the SDES endpoints with (I assume) a new SDES key. When do such key change occur? I assume it could occur in case a SIP PBX performs a "hidden" transfer to other local phone by keeping untouched the SIP dialog in the other leg (in this case the new SIP destination would provide a different SDES key so it must be sent to the WebRTC endpoint in the form of a new EKT key, am I right?). But, does such a key change could occur in simpler cases as for example "putting on hold"? I hope the answer is NOT. Thanks a lot for any clarification. -- Iñaki Baz Castillo <ibc@aliax.net>
- [rtcweb] About DTLS-SRTP-EKT and key changes Iñaki Baz Castillo