Re: [TLS] Updated EdDSA in TLS drafts
Simon Josefsson <simon@josefsson.org> Tue, 09 June 2015 10:43 UTC
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Date: Tue, 09 Jun 2015 12:42:54 +0200
From: Simon Josefsson <simon@josefsson.org>
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Subject: Re: [TLS] Updated EdDSA in TLS drafts
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> >> 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. > > Yep, I think that's correct. But I'd be somewhat wary of > making design decisions in the meantime - we really don't > want to end up with a cfrg-annointed signature scheme that > ends up being hard to integrate because of decisions made > now. (And folks who care about what cfrg are doing on that > should get involved on the cfrg list.) Hi Stephen. Sure. I don't think any decisions are or will be made here now. This is brainstorming about how to approach adding a new signature algorithm to TLS. There are no changes to any TLS version proposed that could cause integration problems for a future CFRG-blessed signature scheme. > > 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. > > Well, maybe. With no hats, I personally don't think we want > more unused ciphersuites, and especially not ones that are > almost-but-not-quite the same as one that uses the eventual > cfrg-annointed signature scheme. (Unless there's a good > reason to not use the cfrg stuff of course, in which case > we're in a different situation.) > > But so long as the TLS WG don't bake in too much stuff and > so long as cfrg continue to make progress in a timely fashion > it should all work out. Agreed. Btw, it seems that no new ciphersuites will have to be allocated anyway, and that the existing ECDSA ciphersuites can be reused. /Simon
- [TLS] Updated EdDSA in TLS drafts Simon Josefsson
- Re: [TLS] Updated EdDSA in TLS drafts Ilari Liusvaara
- Re: [TLS] Updated EdDSA in TLS drafts Stephen Farrell
- Re: [TLS] Updated EdDSA in TLS drafts Martin Thomson
- Re: [TLS] Updated EdDSA in TLS drafts Salz, Rich
- Re: [TLS] Updated EdDSA in TLS drafts Simon Josefsson
- Re: [TLS] Updated EdDSA in TLS drafts Simon Josefsson
- Re: [TLS] Updated EdDSA in TLS drafts Simon Josefsson
- Re: [TLS] Updated EdDSA in TLS drafts Ilari Liusvaara
- Re: [TLS] Updated EdDSA in TLS drafts Ilari Liusvaara
- Re: [TLS] Updated EdDSA in TLS drafts Stephen Farrell
- Re: [TLS] Updated EdDSA in TLS drafts Simon Josefsson
- Re: [TLS] Updated EdDSA in TLS drafts Simon Josefsson
- Re: [TLS] Updated EdDSA in TLS drafts Stephen Farrell
- Re: [TLS] Updated EdDSA in TLS drafts Simon Josefsson
- Re: [TLS] Updated EdDSA in TLS drafts Ilari Liusvaara
- Re: [TLS] Updated EdDSA in TLS drafts Simon Josefsson