Return-Path: Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id A6C08C002D for ; Mon, 23 May 2022 22:10:03 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 8B381401A4 for ; Mon, 23 May 2022 22:10:03 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org X-Spam-Flag: NO X-Spam-Score: -2.101 X-Spam-Level: X-Spam-Status: No, score=-2.101 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, FREEMAIL_FROM=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: smtp2.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=protonmail.com Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BBjS6Mjugmcn for ; Mon, 23 May 2022 22:10:02 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from mail-4316.protonmail.ch (mail-4316.protonmail.ch [185.70.43.16]) by smtp2.osuosl.org (Postfix) with ESMTPS id 526C7400BF for ; Mon, 23 May 2022 22:10:02 +0000 (UTC) Date: Mon, 23 May 2022 22:09:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1653343800; x=1653603000; bh=pdBKxyjqkkCukmRYL6Xb9VofEHxSgyehzjsDRSth9hk=; h=Date:To:From:Reply-To:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID; b=us6jnlN0NF8b720gC/rID1ufEh4Ba62QcSTcbaLoPe65MWdSS3vRujRb86pOe+x2f qljiLZ89Z1V297y+zYQYDGVmc925pKTLw9CYzpNMrZWrRsUPGCL4xZd4pHd487oxS4 E7a+cDAxuTbgoc41fPs230S+/Qi8U7Z98iETR3GxOcsYVwsvp4F8enQ1mO87TEiJj+ 2SsaRk+zeUgHr7H8wXTLcPnErAB90jpG7MbhJpaRoHxdjEpaOuhr4Y97YiE2t7clOM N/SjoZlT9dN+XqqsZnkPRaIGxIv7DeTRpMhqo6WeQa0rjK3acwWIB7NvJ6nHaktFaL woD3ggCK2xNOA== To: Jonas Nick , Bitcoin Protocol Discussion From: AdamISZ Reply-To: AdamISZ Message-ID: In-Reply-To: References: <46175970-d2ab-a58e-7010-f29820849604@gmail.com> Feedback-ID: 11565511:user:proton MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Mailman-Approved-At: Mon, 23 May 2022 22:27:42 +0000 Subject: Re: [bitcoin-dev] MuSig2 BIP X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 May 2022 22:10:03 -0000 Jonas, all,: So I do want to ask a couple further clarifying questions on this point, bu= t I got rather majorly sidetracked :) I wonder can you (and other list readers!) take a look at my attempt here t= o summarize what is described in Footnote 2 of the draft BIP (as it's relat= ed to this discussion and also .. it's pretty interesting generally!): https://gist.github.com/AdamISZ/ca974ed67889cedc738c4a1f65ff620b (btw github gists have equation rendering now which is nice!) Thanks, waxwing/AdamISZ Sent with ProtonMail secure email. ------- Original Message ------- On Monday, May 23rd, 2022 at 10:56, Jonas Nick via bitcoin-dev wrote: > Thank you for taking the time to look at the BIP and reference code, waxw= ing. I > don't know if you're overlooking anything, so let me try to restate the > paragraph in the BIP draft that attempts to cover this topic [0]. > > Suppose signers would just abort in the presence of identical public keys= . In > that case, a disruptive signer can permanently DoS-attack a session by si= mply > copying the public key of some other signer. Therefore, the BIP is much m= ore > useful if it can deal with identical public keys. > > The MuSig2 BIP draft requires some added complexity to handle identical p= ublic > keys (because of the MuSig2* optimization). But this solution naturally a= llows > identifying and removing disruptive signers, which ultimately reduces the > complexity for MuSig2 users. > > [0] https://github.com/jonasnick/bips/blob/musig2/bip-musig2.mediawiki#pu= blic-key-aggregation > _______________________________________________ > bitcoin-dev mailing list > bitcoin-dev@lists.linuxfoundation.org > https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev