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

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

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From: isis agora lovecruft <isis@patternsinthevoid.net>
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Subject: Re: [CFRG] [Cfrg] Call for adoption: Threshold Signatures
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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
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