Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1VUBcd-0005RK-AI for bitcoin-development@lists.sourceforge.net; Thu, 10 Oct 2013 08:29:27 +0000 Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.219.46 as permitted sender) client-ip=209.85.219.46; envelope-from=mh.in.england@gmail.com; helo=mail-oa0-f46.google.com; Received: from mail-oa0-f46.google.com ([209.85.219.46]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1VUBcc-0002AP-DL for bitcoin-development@lists.sourceforge.net; Thu, 10 Oct 2013 08:29:27 +0000 Received: by mail-oa0-f46.google.com with SMTP id k14so1166167oag.5 for ; Thu, 10 Oct 2013 01:29:21 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.182.200.129 with SMTP id js1mr316943obc.55.1381393761008; Thu, 10 Oct 2013 01:29:21 -0700 (PDT) Sender: mh.in.england@gmail.com Received: by 10.76.156.42 with HTTP; Thu, 10 Oct 2013 01:29:20 -0700 (PDT) In-Reply-To: References: Date: Thu, 10 Oct 2013 10:29:20 +0200 X-Google-Sender-Auth: TeM3f1f8eScHkZoRhlcs725Df8A Message-ID: From: Mike Hearn To: "Warren Togami Jr." Content-Type: multipart/alternative; boundary=001a11c236966b817304e85ecc57 X-Spam-Score: -0.5 (/) 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: doubleclick.net] -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (mh.in.england[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 NORMAL_HTTP_TO_IP URI: Uses a dotted-decimal IP address in URL 1.0 HTML_MESSAGE BODY: HTML included in message 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1VUBcc-0002AP-DL Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] 0.8.5 with libsecp256k1 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: Thu, 10 Oct 2013 08:29:27 -0000 --001a11c236966b817304e85ecc57 Content-Type: text/plain; charset=UTF-8 Thanks! I'd love to see this library become usable behind a command line flag or config setting. At some point we're going to want to switch to it. I believe the main issue at the moment is the malleability issues? If so, it would seem possible to use OpenSSL to parse the signature into components and then libsecp256k1 to verify them. On Thu, Oct 10, 2013 at 5:50 AM, Warren Togami Jr. wrote: > https://github.com/sipa/secp256k1 > sipa's secp256k1, optimized ecdsa, significantly faster than openssl > > Today someone in #bitcoin-dev asked for Bitcoin 0.8.5 with sipa's > secp256k1. Litecoin has been shipping test builds with secp256k1 for > several months now so it was a simple matter to throw together a branch of > Bitcoin 0.8.5 with secp256k1. > > https://github.com/wtogami/bitcoin/commits/btc-0.8.5-secp256k1 > This branch should theoretically work for Linux, win32 gitian and mac > builds. These commits are rather ugly because it was thrown together just > to make it build with the old 0.8 makefiles without intent for production > code merge. cfields is working on autotoolizing it as one of the > prerequisites prior to inclusion into bitcoin master where it will be an > option disabled by default. > > http://193.28.235.60/~warren/bitcoin-0.8.5-secp256k1/ > Untested win32 gitian build. Build your own Linux or Mac builds if you > want to test it. Not recommended for production wallet or mining uses. > > Warren > > > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most > from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60134071&iu=/4140/ostg.clktrk > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > > --001a11c236966b817304e85ecc57 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Thanks! I'd love to see this library become usable beh= ind a command line flag or config setting. At some point we're going to= want to switch to it.

I believe the main issue at the m= oment is the malleability issues? If so, it would seem possible to use Open= SSL to parse the signature into components and then libsecp256k1 to verify = them.




On Thu, Oct 10, 2013 at 5:50 AM, Warren Togami Jr. <= span dir=3D"ltr"><wtogami@gmail.com> wrote:
sipa's secp256k1, optimized ecdsa, significantly faster than= openssl

Today someone in #bitcoin-dev asked for Bitcoin 0.8.5 with sipa's secp2= 56k1. =C2=A0Litecoin has been shipping test builds with secp256k1 for sever= al months now so it was a simple matter to throw together a branch of Bitco= in 0.8.5 with secp256k1.

https://github.com/wtogami/bitcoin/commits= /btc-0.8.5-secp256k1
This branch should theoretically work for Linu= x, win32 gitian and mac builds. =C2=A0These commits are rather ugly because= it was thrown together just to make it build with the old 0.8 makefiles wi= thout intent for production code merge. cfields is working on autotoolizing= it as one of the prerequisites prior to inclusion into bitcoin master wher= e it will be an option disabled by default.

Untested win32 gitian build. =C2=A0Build your own= Linux or Mac builds if you want to test it. =C2=A0Not recommended for prod= uction wallet or mining uses.
Warren

-----------------------------------------------------------------------= -------
October Webinars: Code for Performance
Free Intel webinars can help you accelerate application performance.
Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most fr= om
the latest Intel processors and coprocessors. See abstracts and register &g= t;
http://pubads.g.doubleclick.net/gam= pad/clk?id=3D60134071&iu=3D/4140/ostg.clktrk
___________________= ____________________________
Bitcoin-development mailing list
Bitcoin-develo= pment@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bitcoin-de= velopment


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