Subject: Re: [bitcoin-dev] Schnorr signatures BIP

From: Andrew Poelstra <[email-masked]>
Date: Mon, 3 Sep 2018 00:05:18 +0000

On Wed, Aug 29, 2018 at 08:09:36AM -0400, Erik Aronesty wrote:
> Note:
> 
> This spec cannot be used directly with a shamir scheme to produce
> single-round threshold multisigs, because shares of point R would need to
> be broadcast to share participants in order to produce valid single
> signatures.
> 
> (R, s) schemes can still be used "online", if share participants publish
> the R(share).... but, not sure if it matter much, this choice eliminates
> offline multiparty signing in exchange for batch validation.
>

Please stop with this FUD. No tradeoff was made. There are no non-interactive
Schnorr signatures.

Andrew

-- 
Andrew Poelstra
Mathematics Department, Blockstream
Email: apoelstra at wpsoftware.net
Web:   https://www.wpsoftware.net/andrew

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