Perc Status PagesPrivacy Enhanced RTP Conferencing (Active WG)
Art Area: Adam Roach, Alexey Melnikov, Ben Campbell | 2015-Jun-26 —Chairs:
IETF-99 perc minutes
Session 2017-07-18 0930-1200: Berlin/Brussels - Audio stream - perc chatroom
Privacy Enhanced RTP Conferencing IETF 99 Session 2017-07-18 9:30 - 12:00 Chairs :- Suhas Nandakumar, Nils Ohlmeier Scribe: Roni Even Jabber: Matt Miller Summary -------- * draft-ietf-perc-double, draft-ietf-perc-srtp-ekt-diet - Cullen presented a new way to do OHB (now in payload), a joint proposal from Sergio and Cullen - Presentation also focussed on doing RTP Repair (RTX, RED, Flexfec) in PERC —- Idea is to do repair on the double encrypted packet - Ekt draft had no technical changes and may need some changes due to the new OHB proposal - Chairs made the consensus call and there was strong consensus on the overall direction of the new OHB proposal as well as the repair procedures in PERC - Authors to submit new version detailing the proposals. * draft-ietf-perc-private-media-framework - Paul presented on the editorial changes related to PERC key-management & packet format. - No major open issues. - Expected reviews * draft-ietf-perc-dtls-tunnel - Paul presented on the changes related to removal of dlts-id and inclusion of the tls-id in the tunnel, make association ID as UUID and other editorial changes for better readability. - No major open issues. - Expected reviews * Action Items and Next Steps - Chairs to confirm the consensus on the list - Double Authors to submit updated version. - Chairs to setup virtual interim to help progress the decisions made in this meeting. Raw Notes (Roni Even) Chairs Intro New Chair – Nils No comments on milestones SRTP Double draft-ietf-perc-double - Cullen EKT on Diet draft-ietf-perc-srtp-ekt-diet – Cullen What is lite – SRTP in SRTP FlexFEC – usually before encryption In PERC – before, after or in the middle. A option after double B option before – MD cannot do repair Lite – after E2E before HBH RED – Magnus asked about RED what happenes with payload type when changing from non red to red in the MD. Need detailed information about how it will work. Proposal – move obh to payload after header. – slide 15 Roni – how will the SDP work, Cullen – no change still original payload since encrypted. Mo : how does framemarking works. Marker bit is not enough. Cullen : do we allow SFU to set the m-bit. Consensus: the M bit can be changed by SFU Cullen: the bitfield work, maybe from the MD to KD to client. The proposal: Move OHB information from header extension to payload, use RTX,RED and flexfec as in “A”. DTMF: MD cannot receive DTMF. (Add text as Magnus requested). Consensus on slide 16 : the WG accepted the direction. Expect verification of the solution for next meeting. EKT issue (18) – add in to the DTLS EKT messge , the value of bitfiled value for the new Double payload if we make the OHB->payload change. Cullen : can be by defining multiple protection profiles instead of change as above. Action: Need to verify using multiple profiles for different bitmaps DTLS Tunnel draft-ietf-perc-dtls-tunnel – Paul Jones TLS-ID – remove the editor note – will be out of scope PERC Framework draft-ietf-perc-private-media-framework – Paul Jones Added two appendixes – appendix B will need an update based on the payload structure change.