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[2607:fe70:0:3::d]) by gmr-mx.google.com with ESMTPS id 5614622812f47-3ff05283d28si280938b6e.4.2025.03.30.08.41.33 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 30 Mar 2025 08:41:33 -0700 (PDT) Received-SPF: pass (google.com: domain of dave@dtrt.org designates 2607:fe70:0:3::d as permitted sender) client-ip=2607:fe70:0:3::d; Received: from smtpauth.rollernet.us (localhost [127.0.0.1]) by smtpauth.rollernet.us (Postfix) with ESMTP id F120D2800052; Sun, 30 Mar 2025 08:41:27 -0700 (PDT) Received: from webmail.rollernet.us (webmail.rollernet.us [IPv6:2607:fe70:0:14::a]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) by smtpauth.rollernet.us (Postfix) with ESMTPSA; Sun, 30 Mar 2025 08:41:27 -0700 (PDT) MIME-Version: 1.0 Date: Sun, 30 Mar 2025 05:41:27 -1000 From: "David A. Harding" To: =?UTF-8?Q?Martin_Habov=C5=A1tiak?= Cc: Bitcoin Development Mailing List Subject: Re: [bitcoindev] Hashed keys are actually fully quantum secure In-Reply-To: References: Message-ID: X-Sender: dave@dtrt.org Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: quoted-printable X-Rollernet-Abuse: mailto:abuse@rollernet.us https://www.rollernet.us/policy X-Rollernet-Submit: Submit ID 6886.67e96627.d8204.0 X-Original-Sender: dave@dtrt.org X-Original-Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of dave@dtrt.org designates 2607:fe70:0:3::d as permitted sender) smtp.mailfrom=dave@dtrt.org Precedence: list Mailing-list: list bitcoindev@googlegroups.com; contact bitcoindev+owners@googlegroups.com List-ID: X-Google-Group-Id: 786775582512 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , X-Spam-Score: -0.8 (/) On 2025-03-16 08:25, Martin Habov=C5=A1tiak wrote: > It is possible to implement fully secure recovery if we forbid > spending of hashed keys unless done through the following scheme: Hi Martin, How does this differ from Tim Ruffing's version[1] of Guy Fawkes=20 signatures?[2][3] Thanks, -Dave [1]=20 https://gnusha.org/pi/bitcoindev/1518710367.3550.111.camel@mmci.uni-saarlan= d.de/=20 (but see also the whole thread and the links in it) [2] https://www.cl.cam.ac.uk/archive/rja14/Papers/fawkes.pdf [3] Amusing exploration of a blockchain cryptocurrency without=20 signatures by Joseph Bonneau and Andrew Miller:=20 https://jbonneau.com/doc/BM14-SPW-fawkescoin.pdf (never saw it before,=20 but it came up in my search results for a Guy Fawkes signatures=20 reference). --=20 You received this message because you are subscribed to the Google Groups "= Bitcoin Development Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to bitcoindev+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/bitcoindev/= bb54cf2c858843e8a4a9029ac683b3ed%40dtrt.org.