Re: [TLS] Curve25519 in TLS
Kyle Hamilton <aerowolf@gmail.com> Thu, 12 September 2013 00:03 UTC
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Date: Wed, 11 Sep 2013 17:03:57 -0700
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From: Kyle Hamilton <aerowolf@gmail.com>
To: Rob Stradling <rob.stradling@comodo.com>
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Cc: Simon Josefsson <simon@josefsson.org>, Patrick Pelletier <code@funwithsoftware.org>, "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] Curve25519 in TLS
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Curve25519 is not suitable for authentication. Ed25519 would be more appropriate, I think. -Kyle H On Tue, Sep 10, 2013 at 1:34 AM, Rob Stradling <rob.stradling@comodo.com>wrote: > On 09/09/13 21:08, Simon Josefsson wrote: > >> Douglas Stebila <stebila@qut.edu.au> writes: >> >> There are other reasons to support curve25519, including efficiency >>> and resistance to side-channel attacks because constant-time >>> implementations. >>> >> >> I agree. To be able to move forward with standardization of the idea, >> an Internet Draft may help. I have create one: >> >> http://www.ietf.org/id/draft-**josefsson-tls-curve25519-00.**txt<http://www.ietf.org/id/draft-josefsson-tls-curve25519-00.txt> >> >> Feedback most welcome! >> > > Simon, thanks for creating this draft. > > draft-merkle-tls-brainpool-04 (on which you've based this new draft) says: > "While the ASN.1 object identifiers > defined in [RFC5639] already allow usage of the ECC Brainpool curves > for TLS (client or server) authentication through reference in X.509 > certificates according to [RFC3279] and [RFC5480] , their negotiation > for key exchange according to [RFC4492] requires the definition and > assignment of additional NamedCurve IDs." > > Your draft defines a NamedCurve ID for Curve25519, thereby enabling it to > be used for key exchange. But what about "(client or server) > authentication through reference in X.509 certificates..."? > > I'm not aware of an equivalent of RFC5639 for Curve25519. Should we > create one? Or could we simply define some new ASN.1 Object Identifiers in > your draft? > > -- > Rob Stradling > Senior Research & Development Scientist > COMODO - Creating Trust Online > > > ______________________________**_________________ > TLS mailing list > TLS@ietf.org > https://www.ietf.org/mailman/**listinfo/tls<https://www.ietf.org/mailman/listinfo/tls> >
- [TLS] Testing consensus for adding curve25519 to … Adam Langley
- Re: [TLS] Testing consensus for adding curve25519… Russ Housley
- Re: [TLS] Testing consensus for adding curve25519… Rob P Williams
- Re: [TLS] Testing consensus for adding curve25519… Patrick Pelletier
- Re: [TLS] Testing consensus for adding curve25519… Douglas Stebila
- Re: [TLS] Testing consensus for adding curve25519… Douglas Stebila
- Re: [TLS] Testing consensus for adding curve25519… Nick Mathewson
- [TLS] Curve25519 in TLS Simon Josefsson
- Re: [TLS] Testing consensus for adding curve25519… Nico Williams
- Re: [TLS] Testing consensus for adding curve25519… Douglas Stebila
- Re: [TLS] Testing consensus for adding curve25519… Dan Brown
- Re: [TLS] Curve25519 in TLS Rob Stradling
- Re: [TLS] Testing consensus for adding curve25519… Nick Mathewson
- Re: [TLS] Testing consensus for adding curve25519… Dan Brown
- Re: [TLS] Curve25519 in TLS Simon Josefsson
- Re: [TLS] Testing consensus for adding curve25519… Douglas Stebila
- Re: [TLS] Curve25519 in TLS Kyle Hamilton
- Re: [TLS] Curve25519 in TLS Rob Stradling
- Re: [TLS] Curve25519 in TLS Yoav Nir
- Re: [TLS] Curve25519 in TLS Dan Brown
- Re: [TLS] Curve25519 in TLS Bodo Moeller
- [TLS] Koblitz curves [was RE: Curve25519 in TLS] Dan Brown
- Re: [TLS] Curve25519 in TLS Rob Stradling
- Re: [TLS] Curve25519 in TLS Simon Josefsson
- Re: [TLS] Curve25519 in TLS Rob Stradling
- Re: [TLS] Curve25519 in TLS Nico Williams
- Re: [TLS] Curve25519 in TLS Rob Stradling
- Re: [TLS] Curve25519 in TLS Paul Bakker
- Re: [TLS] Curve25519 in TLS Yoav Nir
- Re: [TLS] Curve25519 in TLS Rob Stradling
- [TLS] Curve25519 in TLS Simon Josefsson
- [TLS] Ed25519 for PKIX Simon Josefsson
- Re: [TLS] Ed25519 for PKIX Adam Langley
- Re: [TLS] Ed25519 for PKIX Simon Josefsson
- Re: [TLS] Curve25519 in TLS Manuel Pégourié-Gonnard
- Re: [TLS] Curve25519 in TLS Martin Rex
- Re: [TLS] Curve25519 in TLS Juho Vähä-Herttua
- Re: [TLS] Curve25519 in TLS Manuel Pégourié-Gonnard
- Re: [TLS] Curve25519 in TLS Watson Ladd
- Re: [TLS] Curve25519 in TLS Manuel Pégourié-Gonnard
- Re: [TLS] Curve25519 in TLS Simon Josefsson
- Re: [TLS] Curve25519 in TLS Martin Rex
- Re: [TLS] Curve25519 in TLS Nico Williams