Re: [MMUSIC] Signaling Additional SRTP Context information via SDP - draft-davis-mmusic-srtp-assurance
"Kyzer Davis (kydavis)" <kydavis@cisco.com> Mon, 09 October 2023 20:44 UTC
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From: "Kyzer Davis (kydavis)" <kydavis@cisco.com>
To: "mmusic@ietf.org" <mmusic@ietf.org>
CC: "Esteban Valverde (jovalver)" <jovalver@cisco.com>, "Gonzalo Salgueiro (gsalguei)" <gsalguei@cisco.com>
Thread-Topic: Signaling Additional SRTP Context information via SDP - draft-davis-mmusic-srtp-assurance
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Date: Mon, 09 Oct 2023 20:44:35 +0000
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Subject: Re: [MMUSIC] Signaling Additional SRTP Context information via SDP - draft-davis-mmusic-srtp-assurance
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Group, I have posted draft 01 which covers the items from my previous email. Name: draft-davis-mmusic-srtp-assurance Revision: 01 Title: Signaling Additional SRTP Context information via SDP Date: 2023-10-09 Group: Individual Submission Pages: 21 URL: https://www.ietf.org/archive/id/draft-davis-mmusic-srtp-assurance-01.txt Status: https://datatracker.ietf.org/doc/draft-davis-mmusic-srtp-assurance/ HTML: https://www.ietf.org/archive/id/draft-davis-mmusic-srtp-assurance-01.html HTMLized: https://datatracker.ietf.org/doc/html/draft-davis-mmusic-srtp-assurance Diff: https://author-tools.ietf.org/iddiff?url2=draft-davis-mmusic-srtp-assurance- 01 Thanks, From: mmusic <mmusic-bounces@ietf.org> On Behalf Of Kyzer Davis (kydavis) Sent: Thursday, August 10, 2023 11:30 AM To: mmusic@ietf.org Cc: Esteban Valverde (jovalver) <jovalver@cisco.com> Subject: [MMUSIC] Signaling Additional SRTP Context information via SDP - draft-davis-mmusic-srtp-assurance Hello all, I presented draft-davis-valverde-srtp-assurance-00 at Dispatch and the outcome was to dispatch to MMUSIC WG. I have re-submitted draft-davis-valverde-srtp-assurance-00 as draft-davis-mmusic-srtp-assurance-00 with no changes. To view that session and/slides see below: - https://youtu.be/KT3mMX9CMdA?t=3113 - https://datatracker.ietf.org/meeting/117/materials/slides-117-dispatch-sdp-s ecurity-assurance-for-secure-real-time-transport-protocol-srtp - A quick slide note, before the dispatch session I was working on a draft-01 which leveraged Solution A in these slides while draft-00 uses Solution B. - Jonathan Lennox brought up a good point after the session which favors solution B: - Paraphrasing: "We know how implementations will handle unknown SDP attributes; we do not know well how well how implementations will handle unknown SDP Security Session Parameters" - I dug into this a bit more and tend to agree. So draft-01 now continues to use solution B (a=srtpctx) new SDP Attribute to convey the required SRTP Context information alongside a=crypto. - I have a full write-up on GitHub with far more details: https://github.com/kyzer-davis/srtp-assurance-rfc-draft/issues/5 In addition, some other draft-01 actions items that were brought up in chat, at the mic or in person 1:1: - "Why this can't be a RTP Header Extension" from Richard Barnes. (https://github.com/kyzer-davis/srtp-assurance-rfc-draft/issues/11) - "Discuss sending some update when ROC updates" from Jonathan Rosenberg. (https://github.com/kyzer-davis/srtp-assurance-rfc-draft/issues/10) - Already text in the draft around this; which covers "99.9% of scenarios". - "Method to Convey Multiple SSRCs for a given stream" from various (https://github.com/kyzer-davis/srtp-assurance-rfc-draft/issues/1) - Two solutions proposed in the GitHub issue - A statement Cullen Jennings made about focusing on the problem statements. - I want to re-write the problem sections like RFC7744 where each problem in a scenario is cited as Ux.y and then discussed (Section 2.1.1 and 2.1.2) - I took a stab at a rough draft of this in "Discuss why SEQ is signaled in the SDP" via (https://github.com/kyzer-davis/srtp-assurance-rfc-draft/issues/9) - Overall item is in https://github.com/kyzer-davis/srtp-assurance-rfc-draft/issues/13 Lastly, the following items are already merged into draft-01 over on GitHub: - Change contact name from IESG to IETF in IANA Considerations #2 - Discuss RFC4568 "Late Joiner" in problem statement: #3 - Split Serial forking scenario into its own section #4 - Add MIKEY considerations to Protocol Design section #6 - Change doc title #7 (new title: "Signaling Additional SRTP Context information via SDP") - Add SEQ abbreviation earlier #8 Thanks, --- Kyzer Davis
- [MMUSIC] Signaling Additional SRTP Context inform… Kyzer Davis (kydavis)
- Re: [MMUSIC] Signaling Additional SRTP Context in… Kyzer Davis (kydavis)
- Re: [MMUSIC] Signaling Additional SRTP Context in… Christer Holmberg
- Re: [MMUSIC] Signaling Additional SRTP Context in… Kyzer Davis (kydavis)
- Re: [MMUSIC] Signaling Additional SRTP Context in… Kyzer Davis (kydavis)
- Re: [MMUSIC] Signaling Additional SRTP Context in… Christer Holmberg
- Re: [MMUSIC] Signaling Additional SRTP Context in… Kyzer Davis (kydavis)
- Re: [MMUSIC] Signaling Additional SRTP Context in… Kyzer Davis (kydavis)