Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 9628DC7D; Tue, 3 Jul 2018 04:57:19 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from ozlabs.org (ozlabs.org [203.11.71.1]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id F3B2B691; Tue, 3 Jul 2018 04:57:18 +0000 (UTC) Received: by ozlabs.org (Postfix, from userid 1011) id 41KX0r4BL0z9s3R; Tue, 3 Jul 2018 14:57:16 +1000 (AEST) From: Rusty Russell To: Gregory Maxwell , Bitcoin Protocol Discussion , Christian Decker , Bitcoin Protocol Discussion In-Reply-To: References: <871sewirni.fsf@gmail.com> Date: Tue, 03 Jul 2018 14:26:53 +0930 Message-ID: <87y3esvrvu.fsf@rustcorp.com.au> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: lightning-dev@lists.linuxfoundation.org Subject: Re: [bitcoin-dev] BIP sighash_noinput 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: Tue, 03 Jul 2018 04:57:19 -0000 Gregory Maxwell via bitcoin-dev writes: > On Mon, Apr 30, 2018 at 4:29 PM, Christian Decker via bitcoin-dev > wrote: >> Hi all, >> >> I'd like to pick up the discussion from a few months ago, and propose a new >> sighash flag, `SIGHASH_NOINPUT`, that removes the commitment to the previous > > I know it seems kind of silly, but I think it's somewhat important > that the formal name of this flag is something like > "SIGHASH_REPLAY_VULNERABLE" or likewise or at least > "SIGHASH_WEAK_REPLAYABLE". I agree with the DO_NOT_WANT-style naming. REUSE_VULNERABLE seems to capture it: the word VULNERABLE should scare people away (or at least cause them to google further). Thanks, Rusty.