Re: [rtcweb] [MMUSIC] Draft new: draft-wang-mmusic-encrypted-ice-candidates

Ted Hardie <ted.ietf@gmail.com> Tue, 05 November 2019 19:17 UTC

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From: Ted Hardie <ted.ietf@gmail.com>
Date: Tue, 5 Nov 2019 11:17:19 -0800
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To: Martin Thomson <mt@lowentropy.net>
Cc: Qingsi Wang <qingsi=40google.com@dmarc.ietf.org>, mmusic <mmusic@ietf.org>, Alex Drake <alexdrake@google.com>, RTCWeb IETF <rtcweb@ietf.org>
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Subject: Re: [rtcweb] [MMUSIC] Draft new: draft-wang-mmusic-encrypted-ice-candidates
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On Sun, Nov 3, 2019 at 7:36 PM Martin Thomson <mt@lowentropy.net> wrote:

> This draft has the effect of defining a new gTLD.  That's problematic, and
> likely unnecessary.  I would encourage you to look into ways to signal
> these candidates differently.  a=encrypted-candidate might work, for
> instance.  You might be able to encrypt more data than an IP address in the
> process.
>
> I agree with Martin that the use of a  .encrypted pseudo-TLD is not
necessary.  If you need a special use name, the IAB has signaled
willingness to permit registrations under .arpa.  I don't personally think
this is the best approach, but that tree is the right choice if you
conclude a special use name is the way to go.

regards,

Ted




> I also don't see how key management works here.  The goal of the draft is
> to define a set of entities that you are OK with reading your IP address,
> but I don't see any text that addresses the difficulty of a) identifying
> the entities in that set, and b) getting those entities the necessary
> keys.  Those are the really hard problems in this space.
>
> I don't see how this provides any sort of algorithm agility or ability to
> identify the keys that are in use.  Maybe trial decryption is acceptable in
> this context, but that can get unwieldy fairly rapidly.
>
> On Sat, Nov 2, 2019, at 07:06, Qingsi Wang wrote:
> > Greetings.
> >
> > This draft
> > (
> https://tools.ietf.org/html/draft-wang-mmusic-encrypted-ice-candidates-00)
> proposes a complementary solution to the mDNS candidate detailed in
> draft-ietf-rtcweb-mdns-ice-candidates, specifically for managed networks.
> IPs of ICE candidates are encrypted via PSK and signaled as pseudo-FQDNs in
> this proposal, and it aims to address the connectivity challenge from the
> mDNS technique in these managed environments. The current work on this
> draft is tracked in https://github.com/tQsW/encrypted-ice-candidates.
> >
> > Regards,
> > Qingsi
> > _______________________________________________
> > rtcweb mailing list
> > rtcweb@ietf.org
> > https://www.ietf.org/mailman/listinfo/rtcweb
> >
>
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