Re: [TLS] A la carte handshake negotiation

Viktor Dukhovni <ietf-dane@dukhovni.org> Fri, 12 June 2015 15:53 UTC

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Date: Fri, 12 Jun 2015 15:53:12 +0000
From: Viktor Dukhovni <ietf-dane@dukhovni.org>
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Subject: Re: [TLS] A la carte handshake negotiation
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On Fri, Jun 12, 2015 at 11:45:38AM -0400, Dave Garrett wrote:

> > Just to confirm, it will be possible to negotiate AECDH and ADH
> > key exchange ala carte, separately from the bulk cipher, right?
> 
> Sure, no reason why it couldn't be negotiated via the extension for anon.
> It's not addressed in my draft for this proposal, but that seems like it
> should be the case. Applying the same logic, only ECDH_anon would be valid
> as a suite for TLS 1.3+, but EC/FF would be negotiated via the extension.

That would be great.  Please add it to the draft if/when possible.
Right now, there are many "missing" combinations of AECDH with more
modern bulk ciphers.  If AECDH/ADH key exchange becomes ala carte,
then the problem is solved (for TLS 1.3).

-- 
	Viktor.