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-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from <pete@petertodd.org>) id 1YDIbL-0002uG-Ke for bitcoin-development@lists.sourceforge.net; Mon, 19 Jan 2015 20:07:07 +0000 Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of petertodd.org designates 62.13.148.161 as permitted sender) client-ip=62.13.148.161; envelope-from=pete@petertodd.org; helo=outmail148161.authsmtp.com; Received: from outmail148161.authsmtp.com ([62.13.148.161]) by sog-mx-2.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1YDIbJ-0007Z0-TG for bitcoin-development@lists.sourceforge.net; Mon, 19 Jan 2015 20:07:07 +0000 Received: from mail-c235.authsmtp.com (mail-c235.authsmtp.com [62.13.128.235]) by punt15.authsmtp.com (8.14.2/8.14.2/) with ESMTP id t0JK6iFq004839; Mon, 19 Jan 2015 20:06:44 GMT Received: from [25.167.70.131] ([172.56.31.106]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id t0JK6fBW034076 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 19 Jan 2015 20:06:43 GMT User-Agent: K-9 Mail for Android In-Reply-To: <54BD6314.60607@gmail.com> References: <CAN5esQJe0uUm0NyctaBa6WH7_JjeE_OLR=FY_XQWnSr50VRDyA@mail.gmail.com> <CAJHLa0OTynX4oiQoyanpRKE2tpAuS4L5X-2j20328725J9RrvQ@mail.gmail.com> <2C7D6208-1921-4DDC-90FE-DB1ABE1D61DB@petertodd.org> <CAN5esQLCV=L0kYxDGhK2F=qZ8OqMxyYS+-Pn17U_M+nV4Sj3Og@mail.gmail.com> <54BD6314.60607@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 From: Peter Todd <pete@petertodd.org> Date: Mon, 19 Jan 2015 13:06:38 -0700 To: Alan Reiner <etotheipi@gmail.com>, bitcoin-development@lists.sourceforge.net Message-ID: <36AE6BD8-D329-46D3-9C11-232C6B1D1CBF@petertodd.org> X-Server-Quench: b08659b6-a016-11e4-b396-002590a15da7 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aAdMdwsUElQaAgsB AmMbWVReUFt7XWA7 ag1TcwBbfElPQQRq VldNRFdNFUssAWZ6 AEhsNRlxcwVBfjBx ZEdhWD4JXEx8cE8v RFMFFWwAeGZhPWQC AkNRcR5UcAFPdx8U a1UrBXRDAzANdhES HhM4ODE3eDlSNilR RRkIIFQOdA4hPwZj H0JKAjU+VWICQCo3 IlQeMFkAG00WNg0Y LFUvVEgDexEVEEVT GUpKDC5fKA5p X-Authentic-SMTP: 61633532353630.1023:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 172.56.31.106/465 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: 1YDIbJ-0007Z0-TG Subject: Re: [Bitcoin-development] BIP70: why Google Protocol Buffers for encoding? X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: <bitcoin-development.lists.sourceforge.net> List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, <mailto:bitcoin-development-request@lists.sourceforge.net?subject=unsubscribe> List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=bitcoin-development> List-Post: <mailto:bitcoin-development@lists.sourceforge.net> List-Help: <mailto:bitcoin-development-request@lists.sourceforge.net?subject=help> List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, <mailto:bitcoin-development-request@lists.sourceforge.net?subject=subscribe> X-List-Received-Date: Mon, 19 Jan 2015 20:07:07 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 That's 100% true: BIP70 passes around serialized protobuf data that it signs directly for this reason; it could just as easily be a byte array with json in it. (not that json/XML/etc. doesn't have other flaws) On 19 January 2015 13:03:32 GMT-07:00, Alan Reiner <etotheipi@gmail.com> wrote: >I'm a bit confused. It's been a long time since I looked at protobuf >(and will have to dig into it soon), but I seem to recall it doesn't >have any of the determinism properties you guys just said. It is >intended to allow you to skip details of the on-the-wire >representations >and just send a bunch of named fields between systems. I thought there >was no guarantee that two identical protobuf structures will get >serialized identically...? > > > > >On 01/19/2015 02:57 PM, Richard Brady wrote: >> Thanks guys, great answers. >> >> The design choice certainly makes a lot more sense now regardless of >> whether one agrees with it or not. >> >> Regards, >> Richard >> >> >> >> >------------------------------------------------------------------------------ >> New Year. New Location. New Benefits. New Data Center in Ashburn, VA. >> GigeNET is offering a free month of service with a new server in >Ashburn. >> Choose from 2 high performing configs, both with 100TB of bandwidth. >> Higher redundancy.Lower latency.Increased capacity.Completely >compliant. >> http://p.sf.net/sfu/gigenet >> >> >> _______________________________________________ >> Bitcoin-development mailing list >> Bitcoin-development@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/bitcoin-development > > > >------------------------------------------------------------------------ > >------------------------------------------------------------------------------ >New Year. New Location. New Benefits. New Data Center in Ashburn, VA. >GigeNET is offering a free month of service with a new server in >Ashburn. >Choose from 2 high performing configs, both with 100TB of bandwidth. >Higher redundancy.Lower latency.Increased capacity.Completely >compliant. >http://p.sf.net/sfu/gigenet > >------------------------------------------------------------------------ > >_______________________________________________ >Bitcoin-development mailing list >Bitcoin-development@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/bitcoin-development -----BEGIN PGP SIGNATURE----- Version: APG v1.1.1 iQFQBAEBCAA6BQJUvWPOMxxQZXRlciBUb2RkIChsb3cgc2VjdXJpdHkga2V5KSA8 cGV0ZUBwZXRlcnRvZGQub3JnPgAKCRAZnIM7qOfwhbq4CACAptz1s1rYdQtviI5Y UrqoifRAldRlUaOphle5OKCK+Gus0zqhqm/kiaQtbCg39F1gZ43QrJ/+t9kjZ19l QcrtnIEffAyBdzCXiZH7N9HwGalxBRyiUcKc5iZT2DOYw4rwdJvYXB/PdlPOvGkq rx/q93r2dJSFMFonnmM9pzbvUKS6dLrAWUTJCWH9EVK54TxBjVkoPXuZJEGBHr88 6MMTiRu1+KblxZbOozGRIXmrfd/7+akM6jLMU9FO4BwosUitOc9OWznGS1rvumlQ 5ESTzaiM9TpBLIW3rkJZmqA51Z1lbgVxXFA4HbctyQeMKIZxNn8e+RpWGYdpCblc wfd6 =GYj6 -----END PGP SIGNATURE-----