Re: [Lake] proposed scoping text

Eric Rescorla <ekr@rtfm.com> Thu, 09 April 2020 13:17 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Thu, 9 Apr 2020 06:16:38 -0700
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To: =?UTF-8?Q?G=C3=B6ran_Selander?= <goran.selander=40ericsson.com@dmarc.ietf.org>
Cc: Stephen Farrell <stephen.farrell@cs.tcd.ie>, "lake@ietf.org" <lake@ietf.org>
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Subject: Re: [Lake] proposed scoping text
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On Thu, Apr 9, 2020 at 3:09 AM Göran Selander <goran.selander=
40ericsson.com@dmarc.ietf.org> wrote:

>
>
> On 2020-04-08, 17:41, "Lake on behalf of Stephen Farrell" <
> lake-bounces@ietf.org on behalf of stephen.farrell@cs.tcd.ie> wrote:
>
>     Ben's proposal is:
>
>     "
>     Strip down the requirements document a lot, to have a
>     qualitative sense of "these are the combinations of crypto
>     primitives that we consider important *right now*" (e.g.,
>     PSK and RPK). Have an acknowledgment that extensibility is
>     inevitable, but disclaim that we are focusing on getting it
>     right for these narrow cases right now, and if someone
>     wants to do a broader case in the future, then more
>     analysis will need to be done at that time.
>
>     But for now,
>     we focus on getting RPK and PSK into:
>
>      3 flights, 51-byte messages, and do that well.
>
> [GS] Focus on RPK (by value and by reference) and certificate by
> reference, and do that well. For RPK by reference: 3 flights in (1,1,1)
> fragments. For RPK by value and certificate by reference the number of
> fragments should be kept at a minimum.
>

This seems to put us back in exactly the same situation we were in before
Ben's proposal, which is "as small as possible".

-Ekr