From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1W1alv-0002Ow-8h for bitcoin-development@lists.sourceforge.net; Fri, 10 Jan 2014 12:01:07 +0000 Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of petertodd.org designates 62.13.148.109 as permitted sender) client-ip=62.13.148.109; envelope-from=pete@petertodd.org; helo=outmail148109.authsmtp.co.uk; Received: from outmail148109.authsmtp.co.uk ([62.13.148.109]) by sog-mx-2.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1W1alt-0003AT-CY for bitcoin-development@lists.sourceforge.net; Fri, 10 Jan 2014 12:01:07 +0000 Received: from mail-c237.authsmtp.com (mail-c237.authsmtp.com [62.13.128.237]) by punt18.authsmtp.com (8.14.2/8.14.2/) with ESMTP id s0AC0x9P006058; Fri, 10 Jan 2014 12:00:59 GMT Received: from savin (76-10-178-109.dsl.teksavvy.com [76.10.178.109]) (authenticated bits=128) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id s0AC0mlj056336 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Fri, 10 Jan 2014 12:00:50 GMT Date: Fri, 10 Jan 2014 07:00:47 -0500 From: Peter Todd To: Drak Message-ID: <20140110120047.GB19426@savin> References: <20140106120338.GA14918@savin> <20140110102037.GB25749@savin> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="wq9mPyueHGvFACwf" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Server-Quench: d9b6ee87-79ee-11e3-94fa-002590a135d3 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aQdMdwIUElQaAgsB AmIbWlZeUF17XGI7 bAxPbAVDY01GQQRq WVdMSlVNFUsrAW1y BkNCCBl3cQZFfjBx ZEJgVj4PVRZ8IBN1 RVNTHDhTeGZhPWMC WUQOJh5UcAFPdx8U a1N6AHBDAzANdhES HhM4ODE3eDlSNilR RRkIIFQOdA4wAjM1 QwwCVRwjEVcIXD4+ NHQA X-Authentic-SMTP: 61633532353630.1024:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 76.10.178.109/587 X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Spam-Score: -1.5 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain -0.0 SPF_PASS SPF: sender matches SPF record X-Headers-End: 1W1alt-0003AT-CY Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] Stealth Addresses 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: Fri, 10 Jan 2014 12:01:07 -0000 --wq9mPyueHGvFACwf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jan 10, 2014 at 11:28:33AM +0000, Drak wrote: > On 10 January 2014 10:20, Peter Todd wrote: >=20 > > Oh, sorry, I forgot to mention it in my first write-up but you can > > easily make stealth addresses include a second pubkey for the purpose of > > the communication that either isn't used in the scriptPubKey at all, or > > is part of a n-of-m multisig. (n>=3D2) Interestingly that also means you > > can give a third-party that key and out-source the effort of scanning > > the blockchain for you. >=20 >=20 > That seems pretty exciting to me. What is the chance of this becoming a B= IP? Needs a prototype implementation first. The version with no prefix is the simple one and doesn't have any other dependencies; the prefix version is harder because it isn't clear yet what's the best way to force the prefix, or for that matter whether scriptPubKey or H(scriptPubKey) indexes will be available. It's on my todo list, but as you've probably noticed my todo list is rather long. :) --=20 'peter'[:-1]@petertodd.org 00000000000000028a5c9edabc9697fe96405f667be1d6d558d1db21d49b8857 --wq9mPyueHGvFACwf Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQGrBAEBCACVBQJSz+DvXhSAAAAAABUAQGJsb2NraGFzaEBiaXRjb2luLm9yZzAw MDAwMDAwMDAwMDAwMDI4YTVjOWVkYWJjOTY5N2ZlOTY0MDVmNjY3YmUxZDZkNTU4 ZDFkYjIxZDQ5Yjg4NTcvFIAAAAAAFQARcGthLWFkZHJlc3NAZ251cGcub3JncGV0 ZUBwZXRlcnRvZC5vcmcACgkQJIFAPaXwkfvn5Af/S7CZ253CrlHEzhEhiKP8+HT+ bRkAodqsvAquLWKtG6l+7pdHjiqfnGRhDGJaE3Pmy30Gv2l2gY/vF3v0z3xj7oSc MJFfXjV/p1lrcq4bNSZ3xJeu3UOJGcXPmc2o6b6pAkNTB89EBzVQO9FmoOQ7/5HY b7XfVLaQXRI0QuUXuBjA1zCxne75A16IeYxitR1hoq+DyP6g2bOqazukZMyRNuN6 6emqnl0Nh50l0rYXIAwkBxqSEi2g1ySmHhke68mFNB1AVijf5BxxhdYUqVUiRD5w XAjhE0QYm4CUChupjOSkmnLBxnWR/2rWlgGUdQUFaY8y76UaNC/WpwDfuhTscA== =7Qj9 -----END PGP SIGNATURE----- --wq9mPyueHGvFACwf--