Re: Spin bit discussion - where we're at

"Brian Trammell (IETF)" <ietf@trammell.ch> Wed, 22 November 2017 10:10 UTC

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From: "Brian Trammell (IETF)" <ietf@trammell.ch>
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Subject: Re: Spin bit discussion - where we're at
Date: Wed, 22 Nov 2017 11:10:45 +0100
In-Reply-To: <fd09b775-4c0e-9d99-e49c-421212f2e5e4@cs.tcd.ie>
Cc: Mark Nottingham <mnot@mnot.net>, QUIC WG <quic@ietf.org>, Lars Eggert <lars@netapp.com>
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
References: <AFEE7BBA-E5DC-4064-AA19-33921EAF4C01@mnot.net> <21B07D8C-C4A1-4321-9E43-61C9DB9DC4CA@trammell.ch> <fd09b775-4c0e-9d99-e49c-421212f2e5e4@cs.tcd.ie>
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hi Stephen,

> On 22 Nov 2017, at 11:01, Stephen Farrell <stephen.farrell@cs.tcd.ie> wrote:
> 
> 
> Just on this one aspect...
> 
> On 22/11/17 09:14, Brian Trammell (IETF) wrote:
>> The request for a privacy considerations section for a single
>> protocol feature seems odd to me at best, and prejudicial at worst.
>> Where is the privacy considerations analysis for other features, for
>> instance, various header compression schemes?
> I agree that asking that there be a privacy considerations section
> in RFCs for every bit in every protocol would be OTT. But that was
> not how I interpreted Mark's mail.
> 
> What I thought was being requested and what I do think is reasonable
> is to document a privacy analysis for any quic protocol bits that are
> visible to the path.

I think it makes more sense to document a privacy analysis of the QUIC protocol's wire image, holistically -- traffic analysis doesn't use one bit at a time, and the information available in one bit may be more readily available in others up and down the stack. So if the request is a contribution to an eventual privacy considerations section for the whole wire image, then great, I'm happy to contribute it for this one bit, as I've basically already written it. :)

In light of the rest of the message, though (especially point 5, which I really can't see how to turn into something useful either for the decision process or for future users of such a facility), I read this request more as a proof of work, which is not what we do here, at least not intentionally.

Cheers,

Brian

> Whether or not some or all of that text ends up
> in some RFC is another day's work.