Re: [CFRG] [Cfrg] Call for adoption: Threshold Signatures

isis agora lovecruft <isis@patternsinthevoid.net> Mon, 02 November 2020 23:51 UTC

Return-Path: <isis@patternsinthevoid.net>
X-Original-To: cfrg@ietfa.amsl.com
Delivered-To: cfrg@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D25DB3A12D0 for <cfrg@ietfa.amsl.com>; Mon, 2 Nov 2020 15:51:57 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.1
X-Spam-Level:
X-Spam-Status: No, score=-2.1 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=patternsinthevoid.net header.b=ILHjOIyE; dkim=pass (1024-bit key) header.d=patternsinthevoid.net header.b=Zdjv6mjJ
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 Bj7Chj85qv6r for <cfrg@ietfa.amsl.com>; Mon, 2 Nov 2020 15:51:55 -0800 (PST)
Received: from patternsinthevoid.net (greyarea.patternsinthevoid.net [139.162.173.212]) by ietfa.amsl.com (Postfix) with ESMTP id 59AB23A1320 for <cfrg@irtf.org>; Mon, 2 Nov 2020 15:51:53 -0800 (PST)
Received: from localhost (localhost [127.0.0.1]) by patternsinthevoid.net (Postfix) with ESMTP id 3DA18374142 for <cfrg@irtf.org>; Mon, 2 Nov 2020 23:51:51 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=patternsinthevoid.net; s=mail; t=1604361111; bh=sJ9tBou7P/APRl8TVAyO4UIqfhE57/EWCt5HVVb9/Ko=; h=Date:From:To:Subject:Reply-To:References:In-Reply-To:From; b=ILHjOIyEGjEMF1KDSP0mSs1z0DWsQDmZRea1TnOaXrAda3lupJcUg3OXzXqiHeGMH KIOa3er+WoFOpXdfWXj4wJPEcy6pQwgnrfq57GL5Vas6E7+3L/OLjuUSe9iXS4oAgm p/LPoVsCZ5HZKH84DwASPyKPLiWgV0U6BzvAEBC4=
X-Virus-Scanned: Debian amavisd-new at patternsinthevoid.net
Received: from patternsinthevoid.net ([127.0.0.1]) by localhost (greyarea.patternsinthevoid.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CEYtu2UCzpsZ for <cfrg@irtf.org>; Mon, 2 Nov 2020 23:51:49 +0000 (UTC)
Date: Mon, 2 Nov 2020 23:51:19 +0000
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=patternsinthevoid.net; s=mail; t=1604361109; bh=sJ9tBou7P/APRl8TVAyO4UIqfhE57/EWCt5HVVb9/Ko=; h=Date:From:To:Subject:Reply-To:References:In-Reply-To:From; b=Zdjv6mjJk+RbXqEuvTvZWW4eaxIwQnAshsoVnHVg4veqOu9SYbRoOmGSLPU5ScU7Z m1Ou9WIsNlY6/GyyDy2lgt8w5JHbB8FjEwBH+v31Xf4hvX5ACi2mnmMQ6LQl5piz1c YTyW2y3Lt0SEJ1FaKInhSGqjOUKlLeteEoty6Jh0=
From: isis agora lovecruft <isis@patternsinthevoid.net>
To: CFRG <cfrg@irtf.org>
Message-ID: <20201102235119.GC2981@patternsinthevoid.net>
Reply-To: isis@patternsinthevoid.net
References: <CAFDDyk_U_HPS+Mmn4jnBqMUkAzpsB9r1VS4iWeVJYwKRUsUV0g@mail.gmail.com> <6f7d6904-77dc-4485-9328-00343c209921@www.fastmail.com> <20201102221757.GA2981@patternsinthevoid.net> <CAL02cgSJkptvdzT51ZXC+7CuKWC8J50dMVAJekYOx9VSYjBjUA@mail.gmail.com> <1e239f85-1fa0-4a1a-9ca3-0976c1a568cf@www.fastmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <1e239f85-1fa0-4a1a-9ca3-0976c1a568cf@www.fastmail.com>
X-GPG-Public-Key-URL: https://blog.patternsinthevoid.net/isis.txt
X-Louis-Lingg: In this hope do I say to you I despise you. I despise your order, your laws, your force-propped authority. Hang me for it!
Archived-At: <https://mailarchive.ietf.org/arch/msg/cfrg/mH9jKmZeWhPSy7qN9X65HmWf3LU>
Subject: Re: [CFRG] [Cfrg] Call for adoption: Threshold Signatures
X-BeenThere: cfrg@irtf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Crypto Forum Research Group <cfrg.irtf.org>
List-Unsubscribe: <https://www.irtf.org/mailman/options/cfrg>, <mailto:cfrg-request@irtf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/cfrg/>
List-Post: <mailto:cfrg@irtf.org>
List-Help: <mailto:cfrg-request@irtf.org?subject=help>
List-Subscribe: <https://www.irtf.org/mailman/listinfo/cfrg>, <mailto:cfrg-request@irtf.org?subject=subscribe>
X-List-Received-Date: Mon, 02 Nov 2020 23:51:58 -0000

Christopher Wood transcribed 1.1K bytes:
> On Mon, Nov 2, 2020, at 2:49 PM, Richard Barnes wrote:
> > On Mon, Nov 2, 2020 at 5:20 PM isis agora lovecruft 
> > <isis@patternsinthevoid.net> wrote:
> > > Christopher Wood transcribed 1.1K bytes:
> > > > On Thu, Oct 8, 2020, at 9:33 AM, Nick Sullivan wrote:
> > > >
> > > 
> > > > Probably only one. The structure of draft-hallambaker-threshold-sigs as an
> > > > extension to RFC8032 is attractive, though I think draft-komlo-frost (and
> > > > the related paper) is generally a better starting point, especially given
> > > > its assessment of attacks on related schemes such as 2020/945. It also
> > > > seems to have plenty of backing implementations and reviews. If we can
> > > > specialize it to RFC8032, perhaps with Richard's work as the basis for
> > > > that change, then I prefer FROST.
> > > 
> > > Hi Chris,
> > > 
> > > What do you mean by specialising it to RHC8032?  Do you mean literally
> > > producing RFC8032 backwards compatible EdDSA signatures using the ed25519
> > > and ed448 groups?
> > 
> > I'm not Chris, but that's what I understood him to mean, and I agree 
> > with Chris that it would be good to have such a specialization.
> 
> +1 -- thanks!

Thanks for clarifying!

Would this necessitate a dependency on the current ristretto255/decaf448
draft, due to the requirement that FROST signatures use a prime-order group?

Best,
-- 
 ♥Ⓐ isis agora lovecruft
_________________________________________________________
OpenPGP: 4096R/0A6A58A14B5946ABDE18E207A3ADB67A2CDB8B35
Current Keys: https://fyb.patternsinthevoid.net/isis.txt