IETF Logo Mail Archive

[TLS] Testing consensus for adding curve25519 to the EC named curve registry

Adam Langley <agl@google.com> Tue, 02 March 2010 00:20 UTC

Return-Path: <agl@google.com>
X-Original-To: tls@core3.amsl.com
Delivered-To: tls@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 257143A8BF0 for <tls@core3.amsl.com>; Mon, 1 Mar 2010 16:20:54 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -105.977
X-Spam-Level:
X-Spam-Status: No, score=-105.977 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, RCVD_IN_DNSWL_MED=-4, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HIdRuBdJaRuN for <tls@core3.amsl.com>; Mon, 1 Mar 2010 16:20:53 -0800 (PST)
Received: from smtp-out.google.com (smtp-out.google.com [216.239.44.51]) by core3.amsl.com (Postfix) with ESMTP id 3C4063A7C0A for <tls@ietf.org>; Mon, 1 Mar 2010 16:20:44 -0800 (PST)
Received: from kpbe11.cbf.corp.google.com (kpbe11.cbf.corp.google.com [172.25.105.75]) by smtp-out.google.com with ESMTP id o220Kiij028689 for <tls@ietf.org>; Mon, 1 Mar 2010 16:20:44 -0800
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=google.com; s=beta; t=1267489244; bh=5FGO4s0cjuEx30ITABiy6n7OGMM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ta11zPVYTVzgVsWYNgyXE6WsHTGg9OxHZDC1vlwcfPwqlvx4jGtOBprdVVMj292ta CWpKA4OdlWnhn73tL/WNA==
DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=mime-version:date:message-id:subject:from:to:content-type:x-system-of-record; b=EFFRC/WuR4hOhFlippnHyjzq35sFGoihozc6N/laMa/r9bbb+HqWDiF0jg+3GcJc0 n/if8lqc+PGzA3Pu55hxA==
Received: from pwi2 (pwi2.prod.google.com [10.241.219.2]) by kpbe11.cbf.corp.google.com with ESMTP id o220KebU028808 for <tls@ietf.org>; Mon, 1 Mar 2010 18:20:43 -0600
Received: by pwi2 with SMTP id 2so1850450pwi.40 for <tls@ietf.org>; Mon, 01 Mar 2010 16:20:42 -0800 (PST)
MIME-Version: 1.0
Received: by 10.142.152.40 with SMTP id z40mr2959879wfd.211.1267489242695; Mon, 01 Mar 2010 16:20:42 -0800 (PST)
Date: Mon, 01 Mar 2010 19:20:42 -0500
Message-ID: <a84d7bc61003011620i66fc7dfdre62b548fdd5ef7dd@mail.gmail.com>
From: Adam Langley <agl@google.com>
To: tls@ietf.org
Content-Type: text/plain; charset="UTF-8"
X-System-Of-Record: true
Subject: [TLS] Testing consensus for adding curve25519 to the EC named curve registry
X-BeenThere: tls@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: "This is the mailing list for the Transport Layer Security working group of the IETF." <tls.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/tls>, <mailto:tls-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/tls>
List-Post: <mailto:tls@ietf.org>
List-Help: <mailto:tls-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tls>, <mailto:tls-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 02 Mar 2010 00:20:54 -0000

We would like to start testing EC DHE in order to give our users
forward-secrecy.

In order to do this cheaply, one of the curves that we would like to
test with is curve25519[1]. There are several implementations of it
[2][3][4] and it's 3-4x faster than NIST's p256 (as implemented in
OpenSSL), while being constant-time.

Curve25519 doesn't currently appear on IANA's list of named curves[5]
and we would like to see it included.

As a first step I'd like to ask if there are any objections?


Cheers

AGL


[1] http://cr.yp.to/ecdh/curve25519-20060209.pdf
[2] http://cr.yp.to/ecdh.html
[3] http://code.google.com/p/curve25519-donna/
[4] http://bench.cr.yp.to/results-dh.html
[5] http://www.iana.org/assignments/tls-parameters/

v2.23.0 | Report a Bug | By Email