[dnssd] Confirming consensus from DNSSD Privacy discussion in Bangkok

[David Schinazi <[e-mail]>]

Hello everyone,

It the room at IETF 103, there was a very productive discussion about DNSSD
privacy:
https://www.youtube.com/watch?v=hPuTD19R-uQ&t=28m43s

During that discussion, the room reached consensus on the following items:

1) single-stage approach -- Up until now, we were considering two
approaches: single-stage (send encrypted and authenticated service
identifier, receive encrypted and authenticated service response) and
two-stage (send encryption and authenticated identifier, receive encrypted
and authenticated response, derive secrets, send and receive subsequent
queries encrypted using derived secrets). There was consensus in the room
to go with the single-stage approach.

2) Use of TLS -- The single-stage approach no longer requires a key
exchange mechanism such as TLS. There was consensus in the room that we do
not need TLS as part of this protocol.

3) Evolution of documents -- It was proposed that we would take all input
and compound it into a single document and only advance that one. We will
use draft-ietf-dnssd-privacy since that document has already been adopted
by the working group. Christian Huitema has offered for Bob Bradley to join
as co-author if Bob would like.

If you disagree with any of these points, please say so before 2018-12-02.

Thanks,
David