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 BAA2426C for ; Wed, 29 Jun 2016 11:17:29 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from dosf1.alfie.wtf (dosf1.alfie.wtf [104.236.177.69]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id EC39BFF for ; Wed, 29 Jun 2016 11:17:28 +0000 (UTC) Received: by dosf1.alfie.wtf (Postfix, from userid 0) id 930D361528; Wed, 29 Jun 2016 11:17:28 +0000 (UTC) Date: Wed, 29 Jun 2016 11:17:28 +0000 From: Alfie John To: Eric Voskuil , Bitcoin Protocol Discussion Message-ID: <20160629111728.GO13338@dosf1.alfie.wtf> References: <87h9cecad5.fsf@rustcorp.com.au> <1E86A00F-0609-4DBC-9543-94AE04CC13C9@voskuil.org> <577234A4.3030808@jonasschnelli.ch> <360EF9B8-A174-41CA-AFDD-2BC2C0B4DECB@voskuil.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <360EF9B8-A174-41CA-AFDD-2BC2C0B4DECB@voskuil.org> User-Agent: Mutt/1.5.23 (2014-03-12) X-Spam-Status: No, score=-3.2 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 Subject: Re: [bitcoin-dev] BIP 151 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: Wed, 29 Jun 2016 11:17:29 -0000 On Tue, Jun 28, 2016 at 06:45:58PM +0200, Eric Voskuil via bitcoin-dev wrote: > > then we should definitively use a form of end-to-end encryption between > > nodes. Built into the network layer. > > Widespread application of this model is potentially problematic. It is a > non-trivial problem to design a distributed system that requires authentication > but without identity and without central control. In fact this may be more > challenging than Bitcoin itself. Trust on first use (TOFU) does not solve this > problem. Maybe the following paper can feed into this discussion: "Decentralized Anonymous Credentials" by Christina Garman, Matthew Green, Ian Miers https://eprint.iacr.org/2013/622.pdf Alfie -- Alfie John https://www.alfie.wtf