Re: [TLS] Updated EdDSA in TLS drafts

Simon Josefsson <simon@josefsson.org> Tue, 09 June 2015 08:07 UTC

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From: Simon Josefsson <simon@josefsson.org>
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Date: Tue, 09 Jun 2015 10:07:17 +0200
In-Reply-To: <55756B76.4070103@cs.tcd.ie> (Stephen Farrell's message of "Mon, 08 Jun 2015 11:16:22 +0100")
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Subject: Re: [TLS] Updated EdDSA in TLS drafts
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Stephen Farrell <stephen.farrell@cs.tcd.ie>; writes:

> Hiya,
>
> On 08/06/15 10:52, Simon Josefsson wrote:
>> More feedback is appreciated!
>
> My v. high level feedback is that we really don't want
> to get too far ahead of cfrg here. They've not yet got
> all details of their preferred signature scheme using
> that curve defined and it'd be really dumb for any IETF
> WG to get ahead of that by accident.
>
> So while working on this draft is a fine thing, I don't
> think we want to get to IETF LC for things like this until
> after cfrg have figured out their preferred signature
> scheme. (And the cfrg chairs tell me that ought be done
> soon - in a few months.)

Thanks for feedback.  I believe these documents are quite far away from
LC-ready so that this aspect shouldn't be a problem.

I view the EdDSA/Ed25519 effort similar to the Brainpool/GOST efforts.
If CFRG happens to pick EdDSA, then fine, but that isn't the
motivational factor here.

/Simon

> Note that waiting until the cfrg position is clear
> does not mean that the IETF has to mindlessly adopt what
> cfrg have done, but we won't want to ignore their work
> either. And fwiw, I guess I'd take the same position for
> any work item for almost any new ECC work for the moment.
> Since cfrg are nearly done and seem to be making progress
> now, pre-empting their decisions wouldn't be a good plan.
>
> Cheers,
> S.
>
>
>
>
>
>
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