Re: [Cfrg] New names for draft-ladd-safecurves

Manuel Pégourié-Gonnard <mpg@elzevir.fr> Tue, 21 January 2014 20:54 UTC

Return-Path: <mpg@elzevir.fr>
X-Original-To: cfrg@ietfa.amsl.com
Delivered-To: cfrg@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 45FA21A0168 for <cfrg@ietfa.amsl.com>; Tue, 21 Jan 2014 12:54:35 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: 0.994
X-Spam-Level:
X-Spam-Status: No, score=0.994 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FH_RELAY_NODNS=1.451, HELO_EQ_FR=0.35, MIME_8BIT_HEADER=0.3, RDNS_NONE=0.793] autolearn=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2KcaRxEifzZW for <cfrg@ietfa.amsl.com>; Tue, 21 Jan 2014 12:54:33 -0800 (PST)
Received: from mordell.elzevir.fr (unknown [IPv6:2001:4b98:dc0:41:216:3eff:feeb:c406]) by ietfa.amsl.com (Postfix) with ESMTP id 835681A0125 for <cfrg@irtf.org>; Tue, 21 Jan 2014 12:54:33 -0800 (PST)
Received: from thue.elzevir.fr (thue.elzevir.fr [88.165.216.11]) by mordell.elzevir.fr (Postfix) with ESMTPS id 6E13F161C4 for <cfrg@irtf.org>; Tue, 21 Jan 2014 21:54:32 +0100 (CET)
Received: from [192.168.0.124] (unknown [192.168.0.254]) by thue.elzevir.fr (Postfix) with ESMTPSA id 355CE29861 for <cfrg@irtf.org>; Tue, 21 Jan 2014 21:54:31 +0100 (CET)
Message-ID: <52DEDE86.2060707@elzevir.fr>
Date: Tue, 21 Jan 2014 21:54:30 +0100
From: =?ISO-8859-1?Q?Manuel_P=E9gouri=E9-Gonnard?= <mpg@elzevir.fr>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Icedove/24.1.1
MIME-Version: 1.0
To: cfrg@irtf.org
References: <CACsn0ck02mnETBUfuyJjLV9K8Yuiki8_-RG0tVszL8BDhkK27w@mail.gmail.com> <6489F7D3-BF54-416F-94BE-64FD1CFCCB1E@callas.org> <CADMpkc+fxfXL8A21bGKgobKFvHxhQaiCEzROQmX4uH_73bgk1Q@mail.gmail.com> <CACsn0c=yrO5WiqshQ0z-eF+u1boyUYK5OQdr_XORXKTzJ7=KKA@mail.gmail.com> <CF03FB51.2CEE5%paul@marvell.com>
In-Reply-To: <CF03FB51.2CEE5%paul@marvell.com>
X-Enigmail-Version: 1.6
OpenPGP: id=98EED379; url=https://elzevir.fr/gpg/mpg.asc
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Subject: Re: [Cfrg] New names for draft-ladd-safecurves
X-BeenThere: cfrg@irtf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Crypto Forum Research Group <cfrg.irtf.org>
List-Unsubscribe: <http://www.irtf.org/mailman/options/cfrg>, <mailto:cfrg-request@irtf.org?subject=unsubscribe>
List-Archive: <http://www.irtf.org/mail-archive/web/cfrg/>
List-Post: <mailto:cfrg@irtf.org>
List-Help: <mailto:cfrg-request@irtf.org?subject=help>
List-Subscribe: <http://www.irtf.org/mailman/listinfo/cfrg>, <mailto:cfrg-request@irtf.org?subject=subscribe>
X-List-Received-Date: Tue, 21 Jan 2014 20:54:35 -0000

On 21/01/2014 19:30, Paul Lambert wrote:
> Two names would be better to differentiate between a Edwards or Montgomery
> based point representation for the same curve.
> 
> WE also are working on the assumption that there are just one curve choice
> for a particular field size. We should provide a extensible naming scheme
> that would allow the later introduction additional options (e.g. Ed255
> would be #1 of that size and flavor).
> 
How about something like curve-255-19-m1 and curve-255-19-e1 for Montgomery and
Edwards form, respectively? m/e is for the type, and "1" is here as a hint that
they're not the only (secure) curves over this field.

Or, more in line with the existing names:
- curve255m1 (just the field size)
- curvep255m1 (same, with a p for "prime field").

Manuel.