Re: [rtcweb] security-arch: RTP and RTCP Key Management (mux and non-mux)
Bernard Aboba <bernard.aboba@gmail.com> Tue, 22 July 2014 17:18 UTC
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From: Bernard Aboba <bernard.aboba@gmail.com>
Date: Tue, 22 Jul 2014 13:18:35 -0400
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To: Martin Thomson <martin.thomson@gmail.com>
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Subject: Re: [rtcweb] security-arch: RTP and RTCP Key Management (mux and non-mux)
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Martin said: "Yeah, keying multiple SRTP sessions from a single DTLS session could (would) lead to key reuse if the different sessions use the same SSRC values. That's why 5764 says what it says." [BA] Yes - but the question was about deriving SRTCP and SRTP keys from a single DTLS session when RTP and RTCP are not multiplexed. That wouldn't result in key reuse. On Tue, Jul 22, 2014 at 11:59 AM, Martin Thomson <martin.thomson@gmail.com> wrote: > On 21 July 2014 20:33, Bernard Aboba <bernard.aboba@gmail.com> wrote: > > [BA] My question is whether WebRTC permits DTLS-SRTP sessions to share a > > single DTLS session or not. > > Yeah, keying multiple SRTP sessions from a single DTLS session could > (would) lead to key reuse if the different sessions use the same SSRC > values. That's why 5764 says what it says. > > Writing this down makes sense, though we need only lean on what 5764 says. >
- [rtcweb] security-arch: RTP and RTCP Key Manageme… Bernard Aboba
- Re: [rtcweb] security-arch: RTP and RTCP Key Mana… Martin Thomson
- Re: [rtcweb] security-arch: RTP and RTCP Key Mana… Bernard Aboba