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Re: Spin Bit -- a Path Forward

"Brian Trammell (IETF)" <ietf@trammell.ch> Fri, 23 March 2018 14:34 UTC

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From: "Brian Trammell (IETF)" <ietf@trammell.ch>
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Subject: Re: Spin Bit -- a Path Forward
Date: Fri, 23 Mar 2018 14:34:01 +0000
In-Reply-To: <D90555C7-CE24-4073-8E85-E05CFF2D645E@mnot.net>
Cc: IETF QUIC WG <quic@ietf.org>, Lars Eggert <lars@eggert.org>
To: Mark Nottingham <mnot@mnot.net>
References: <D90555C7-CE24-4073-8E85-E05CFF2D645E@mnot.net>
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hi Mark, all,

This reflects where I thought we ended up yesterday. If I may propose one friendly amendment...

> On 23 Mar 2018, at 14:20, Mark Nottingham <mnot@mnot.net> wrote:
> 
> <snip>
> 
> If there is enough interest in using more than one bit for determining RTT (e.g., Brian's VEC), or another proposal, we'll spin up a Design Team to evaluate the privacy implications of doing so (taking into consideration decisions about Packet Number Encryption).

While the privacy considerations for additional signal beyond the one bit are important (and we haven't yet examined them), I wouldn't scope the DT so tightly. The DT should consider measurement utility as well as privacy risk.

Cheers,

Brian

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