From mboxrd@z Thu Jan 1 00:00:00 1970 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 1Z4tdU-0007Zw-17 for bitcoin-development@lists.sourceforge.net; Tue, 16 Jun 2015 16:22:52 +0000 X-ACL-Warn: Received: from mail-qk0-f176.google.com ([209.85.220.176]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1Z4tdN-0001z2-VE for bitcoin-development@lists.sourceforge.net; Tue, 16 Jun 2015 16:22:52 +0000 Received: by qkbp125 with SMTP id p125so7306727qkb.2 for ; Tue, 16 Jun 2015 09:22:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=Rr7pzO6umFi9/A4CE3aW+SqqbkkQ4HdEzOD4Y+Vwz8g=; b=FsVvCwpNY8Jz6uNUNnCLeMC11tvOfntcJ50/XB9x5VhXuxEpX2AzYTy3FAtwdgyh3P QFlLgnWtvK8pmzFgjwSPeLAhC0BYAetriQSab04tsuQPjd+NOfx+1gCJqAn3MltDAelf VKgWgStpNRCuHuwc7nqQ3nHnA5PGJdtD9vaTaorEnXQ6ejMcqnmS6sI/ocRgr+00p5C/ qs84rNDR2bEHCLIFGdw8kCclyo/QmXSxJq49rHGEevxSUIw2oHFrte1GOa6AoxYCeafD YDNkjBl/1t9mwEwRT+yjRQbarsSJzSvfEzkX+hH5OLiudS+Q+o/u1Rx6GQNKplrCj1bJ Kp7w== X-Gm-Message-State: ALoCoQm56PY/njjPoRhcWUEHa68odg7xW4yXj11ho7SJow5VlnfXl95DY4JnPKacmXRMYaEyTzZb MIME-Version: 1.0 X-Received: by 10.140.41.9 with SMTP id y9mr1810869qgy.28.1434471760198; Tue, 16 Jun 2015 09:22:40 -0700 (PDT) Received: by 10.96.145.9 with HTTP; Tue, 16 Jun 2015 09:22:40 -0700 (PDT) In-Reply-To: <55802D0D.4090506@thinlink.com> References: <557FB36B.1030902@thinlink.com> <55802D0D.4090506@thinlink.com> Date: Tue, 16 Jun 2015 18:22:40 +0200 Message-ID: From: Kalle Rosenbaum To: Tom Harding Content-Type: text/plain; charset=UTF-8 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 0.0 AWL AWL: Adjusted score from AWL reputation of From: address X-Headers-End: 1Z4tdN-0001z2-VE Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] BIP for Proof of Payment 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: Tue, 16 Jun 2015 16:22:52 -0000 Thank you for the clarification Tom! /Kalle 2015-06-16 16:05 GMT+02:00 Tom Harding : > On 6/16/2015 5:12 AM, Kalle Rosenbaum wrote: >> 2015-06-16 7:26 GMT+02:00 Tom Harding : >>> Kalle goes to some trouble to describe how merchants need to ensure that >>> they only accept a PoP provided as a response to their challenge. >>> >> Do you mean that it will be hard to explain to merchants that they >> must check the nonce in the PoP so that it matches the nonce in the >> pop request? > > Sorry for the idiomatic language. No, I just meant that you have > thought it out in detail! You standardize a latent capability of the > cryptosystem. It seems very powerful for some classes of users. > >