Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1VcjSI-0006sE-GP for bitcoin-development@lists.sourceforge.net; Sat, 02 Nov 2013 22:14:06 +0000 Received: from mail-ie0-f182.google.com ([209.85.223.182]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1VcjSH-0004uu-5s for bitcoin-development@lists.sourceforge.net; Sat, 02 Nov 2013 22:14:06 +0000 Received: by mail-ie0-f182.google.com with SMTP id as1so10127802iec.13 for ; Sat, 02 Nov 2013 15:13:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:date:from:organization:user-agent :mime-version:to:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=ZHLCGLtddUzVpBxcj8PyY9KvcJb0yrrAaIveNDbLZNA=; b=XwOhlLI4HwhWw9rVxjFUOtBmXsQK2Di1ICNHMgtxZeM4cWEAyaVjB4Q+mb7wt2TqV8 Tu4jueGscLek0GAlZtNrj32lCrts82pBrJgRqNivuqArItTA8prHMpLDJ+M4tyRxXYfP II6dSnbshCHD54fJgsVXo2lyOkeLi8eUF70i/MPL/Q2esDHgSt+vMgmL/kPPMJxBZvLv Uyk5yGKrwu9mB3T5W1NHVB5Aab8EQVvoXcaCsXWrHyqO7kyhx7PUzbYk2qBtf5nB70Vb nHBjBDI+6EXl7mwBxX2zTG0Ib/4ssSEtjyVDNH3SxKjc0LSNJB6k2Iovobsf46yXjWgh ZGEA== X-Gm-Message-State: ALoCoQnu0y11Jorl8E2JLWcUTJw01Mdwp3nfnY73VDLHoqqMlK9zv7FDvLQVV18TcwSr5YbvrTcQ X-Received: by 10.50.66.163 with SMTP id g3mr6986775igt.20.1383429086976; Sat, 02 Nov 2013 14:51:26 -0700 (PDT) Received: from [192.168.1.118] (adsl-71-131-186-92.dsl.sntc01.pacbell.net. [71.131.186.92]) by mx.google.com with ESMTPSA id i3sm12333474igh.0.2013.11.02.14.51.25 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 02 Nov 2013 14:51:26 -0700 (PDT) Message-ID: <527573DA.7010203@monetize.io> Date: Sat, 02 Nov 2013 14:51:22 -0700 From: Mark Friedenbach Organization: Monetize.io Inc. User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: bitcoin-development@lists.sourceforge.net References: <20131102050144.5850@gmx.com> <52756B2E.7030505@corganlabs.com> In-Reply-To: <52756B2E.7030505@corganlabs.com> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Spam-Score: 0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 0.0 URIBL_BLOCKED ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [URIs: enigmail.net] X-Headers-End: 1VcjSH-0004uu-5s Subject: Re: [Bitcoin-development] Message Signing based authentication X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Nov 2013 22:14:06 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Or SIGHASH of a transaction spending those coins or updating the SIN... On 11/2/13 2:14 PM, Johnathan Corgan wrote:> On 11/01/2013 10:01 PM, bitcoingrant@gmx.com wrote: > >> Server provides a token for the client to sign. > > Anyone else concerned about signing an arbitrary string? Could be > a hash of $EVIL_DOCUMENT, no? I'd want to XOR the string with my > own randomly generated nonce, sign that, then pass the nonce and > the signature back to the server for verification. > -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.19 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJSdXPaAAoJEAdzVfsmodw4+m8P/1Ce/PwZOYfiFuFJ8pmT2tb2 ro7tw7zSr12RSTvs+qRl7lDzJzQ6BDXOdXZCkcU0Vj3TDm8fdrrXN/iw3iQYU/5Y 3K7hj2mGqQUMovCLw0CbrMWrMvor7FhO6MZsRwe0+VxDV/dDrX5f5vSEhnkR26be NrzOFU4hqGM3R4eLq8Bmw5rVD/VCrRzKoXXAvJb1EwM1+fQPjKi+bNMJu3reyfXU 5eMbbiM6tUMmPXy9M6vZrN+6ad53x3KUVP6+/hXxsrnfPp57WQzRZlvwTo/qdJ1C Oxl71m6o2zkXbLTFmg1xmK/A4V1BPTLD6nLDIsw+wTBBfdn22pfDv6Q8d3VRctrd 6x+PMkwysoMjhemmkXCY/7G9GD6AGsrYSqIShSULd9QO5WxAFzRO01ewiRUCUFHi Dn0LEjy8/R/CWK3jvj9uL3vQh9DLdOtqf/X7cEtjF3LThVP+stFTsmXObhTh/8Ai YYjpnwOFG5ZtDzRZfP3OCwyhqlsaMlNgN4xnyR4GPaoJRP3a0zllblIbTWzg6nhY jbON5Ec9N9txGhagYOoAvcQYqGyJdffkBzW82CRUsFYuYYmW2oLUQXPhAGDBIzzj g/7RjMlM1OEp3qctxMZQlrTj7VJmhD768PRLh2XvEDmEC5Qb8Tcq28Nq5t85/O/6 i3+pzT5rMuiIZWLx7Msv =tAUY -----END PGP SIGNATURE-----