Return-Path: Received: from smtp4.osuosl.org (smtp4.osuosl.org [IPv6:2605:bc80:3010::137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 12D06C0032 for ; Wed, 26 Jul 2023 19:59:31 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id D2426408C9 for ; Wed, 26 Jul 2023 19:59:30 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org D2426408C9 Authentication-Results: smtp4.osuosl.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20221208 header.b=EIGxlrhR X-Virus-Scanned: amavisd-new at osuosl.org X-Spam-Flag: NO X-Spam-Score: -2.099 X-Spam-Level: X-Spam-Status: No, score=-2.099 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2bqJm0WkFkFt for ; Wed, 26 Jul 2023 19:59:29 +0000 (UTC) Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) by smtp4.osuosl.org (Postfix) with ESMTPS id 530D64089C for ; Wed, 26 Jul 2023 19:59:29 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 530D64089C Received: by mail-wm1-x32e.google.com with SMTP id 5b1f17b1804b1-3fbef8ad9bbso1533605e9.0 for ; Wed, 26 Jul 2023 12:59:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1690401567; x=1691006367; h=content-transfer-encoding:in-reply-to:references:to :content-language:subject:user-agent:mime-version:date:message-id :from:from:to:cc:subject:date:message-id:reply-to; bh=bThahtaPQRi7YJf3vF5uREIvn+Vax5QkPMdLT5s1uMU=; b=EIGxlrhRDghLlOiWnUBDMjjXT8gzbMiWQqn6SqzyPJwdSw5mwdxaWxP9aOue28WMgS 1zBYHCWPrqSISNChMhphMFI0HrNpHnwuEyCKtg4AD8r1DJY/VdJ8pDvTiwv4JMOkBgGP u74Oh643hLB/cS7ZhfLJ11649gJqApYyZmfbYkvx410JxQrczUPjcpEoFHxf0/WSOEGn VCJ3dXSkuqb0NGCd4aKBxnYevj6cLTuFEbd7nyMhDuqJeOFTKv7nHI+MzkdgyEMJVzL3 GMAEh44itPYTf4CwrrSffTpHlQCy46AbrUKpnVmc43KunbI9fp7EuWvMdvjB9wl1X7np kDWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690401567; x=1691006367; h=content-transfer-encoding:in-reply-to:references:to :content-language:subject:user-agent:mime-version:date:message-id :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=bThahtaPQRi7YJf3vF5uREIvn+Vax5QkPMdLT5s1uMU=; b=H9PVI3whatLxDP0KBAaAsHtTEVVqDsoyM4sW9mxGiNikpGtn4IrDultO3WNsmx4Es2 Z5G/LLyGcM45T6mcl0chipGfsqFrcCed/2sSOklULb8Zj6D8hWhiZyQ8wj2NVRT1DDNI NSI4sqB3kxkTHLIe57Bir3ekf2Fd8afUWijXla9/1btC4EdjIwfom/HYfDpHDU6Mh0l3 e+RefxmxGbF1bYiGNKruAVg+9ejtjOUKfzrXVo7VRqNMtnt8V2yQdJ/TGkFzFjX5sN6H QuyCLp6pQfXC542HJedV/Cq671bxJHKKszgf/3yuRHBYmSdh39xQFuptOJAjkVcpi4HY mU/g== X-Gm-Message-State: ABy/qLaFGwzlPkTTtKTDdvdC5C3PEcbYD9aDg8ZbsOrqsZoPiu9uTpVt aGM6eJ1fr7u9wo1TRoWMm70= X-Google-Smtp-Source: APBJJlENY/sqFDHd6vTpPxpcZxVmGQ75/AZ7o2Fx16xS08ZYRSI/dpSSOS+lGGFEgICWpcVhJ9R1lw== X-Received: by 2002:a05:600c:22da:b0:3fb:c9f4:1506 with SMTP id 26-20020a05600c22da00b003fbc9f41506mr99460wmg.1.1690401567110; Wed, 26 Jul 2023 12:59:27 -0700 (PDT) Received: from [10.11.10.42] (p50879c84.dip0.t-ipconnect.de. [80.135.156.132]) by smtp.googlemail.com with ESMTPSA id w3-20020a1cf603000000b003fa973e6612sm2770371wmc.44.2023.07.26.12.59.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 26 Jul 2023 12:59:26 -0700 (PDT) From: Jonas Nick X-Google-Original-From: Jonas Nick Message-ID: Date: Wed, 26 Jul 2023 19:59:26 +0000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Erik Aronesty , Bitcoin Protocol Discussion , Tom Trevethan References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Thu, 27 Jul 2023 00:19:01 +0000 Subject: Re: [bitcoin-dev] Blinded 2-party Musig2 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: Wed, 26 Jul 2023 19:59:31 -0000 None of the attacks mentioned in this thread so far (ZmnSCPxj mentioned an attack on the nonces, I mentioned an attack on the challenge c) can be prevented by proving knowledge of the signing key (usually known as proof of possession, PoP).