Minutes IETF99: perc
minutes-99-perc-01
|
| Meeting Minutes |
|
Privacy Enhanced RTP Conferencing
(perc) WG
Snapshot
|
| Title |
|
Minutes IETF99: perc |
| State |
|
Active |
| Other versions |
|
plain text
|
| Last updated |
|
2017-07-26 |
Meeting Minutes
minutes-99-perc
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.