[pkix] Updated elliptic curve drafts

Simon Josefsson <simon@josefsson.org> Mon, 12 October 2015 20:25 UTC

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From: Simon Josefsson <simon@josefsson.org>
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Date: Mon, 12 Oct 2015 22:25:31 +0200
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Subject: [pkix] Updated elliptic curve drafts
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Hi,

I've updated my drafts on Curve25519/Curve448 support in PKIX to refer
to the CFRG-Curves and CFRG-EdDSA drafts.

The following document adds new EdDSA key/signature OIDs directly:

https://tools.ietf.org/html/draft-josefsson-pkix-eddsa-04

The following document adds new namedCurve OIDs, thus going indirectly
through the existing ECDSA 3279 route:

https://tools.ietf.org/html/draft-josefsson-pkix-newcurves-01

These two drafts take different approaches to including the new curves
into PKIX, and currently both lack applicability statements.  There is
potential for overlap and conflict right now.  It recently came up that
for PKCS#11 a namedCurve approach would be useful, but for normal PKIX
Certificates, it may be that the first direct approach is preferrable.
The former lack the possibility of encoding keys for DH.  I believe each
approach can be useful on its own, but we need to include text adressing
use-cases that can be resolved by both documents to avoid conflicts.

/Simon