From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 408534A4 for ; Fri, 7 Apr 2017 06:53:35 +0000 (UTC) X-Greylist: delayed 00:06:40 by SQLgrey-1.7.6 Received: from www01.emuadmin.com (www01.emuadmin.com [108.61.189.74]) by smtp1.linuxfoundation.org (Postfix) with SMTP id DF1A8151 for ; Fri, 7 Apr 2017 06:53:30 +0000 (UTC) Received: (qmail 3181 invoked by uid 1005); 7 Apr 2017 06:46:49 -0000 X-Qmail-Scanner-Diagnostics: from localhost by www01.emuadmin.com (envelope-from , uid 64011) with qmail-scanner-2.11 (mhr: 1.0. clamscan: 0.98.6/20208. Clear:RC:1(127.0.0.1):. Processed in 0.005707 secs); 07 Apr 2017 06:46:49 -0000 Received: from localhost (127.0.0.1) by www01.emuadmin.com with SMTP; 7 Apr 2017 06:46:49 -0000 Date: Fri, 7 Apr 2017 09:46:47 +0300 (EEST) From: Emilian Ursu X-X-Sender: morbid@gw00.emuadmin.com To: Daniele Pinna via bitcoin-dev In-Reply-To: Message-ID: References: User-Agent: Alpine 2.20 (BSF 67 2015-01-07) MIME-Version: 1.0 Content-Type: multipart/mixed; BOUNDARY="4266313884-920737043-1491547609=:1298" X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org X-Mailman-Approved-At: Fri, 07 Apr 2017 06:57:40 +0000 Subject: Re: [bitcoin-dev] BIP proposal: Inhibiting a covert attack on the Bitcoin POW function X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 Apr 2017 06:53:35 -0000 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --4266313884-920737043-1491547609=:1298 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8BIT The fact that this is possible should be enough for us to implement meassures against it. On Fri, 7 Apr 2017, Daniele Pinna via bitcoin-dev wrote: > > Can you please not forget to supply us more details on the claims made regarding the reverse engineering of the Asic chip? > > It is absolutely crucial that we get these independently verified ASAP. > > Daniele > > Message: 2 > Date: Thu, 6 Apr 2017 21:38:31 +0000 > From: Gregory Maxwell > To: Bitcoin Dev > Subject: Re: [bitcoin-dev] BIP proposal: Inhibiting a covert attack on >         the     Bitcoin POW function > Message-ID: >         > Content-Type: text/plain; charset=UTF-8 > On Wed, Apr 5, 2017 at 9:37 PM, Gregory Maxwell wrote: > > each block MUST either contain a BIP-141 segwit commitment or a > > correct WTXID commitment with ID 0xaa21a9ef. > It was just pointed out to me that the proposed ID (which I just > selected to be above the segwit one) collides with one chosen in > another non-BIP proposal.  This wasn't intentional, and I'll happily > change the value when I update the document. > >   > > --4266313884-920737043-1491547609=:1298--