Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1YPry2-0007Y2-Sb for bitcoin-development@lists.sourceforge.net; Mon, 23 Feb 2015 12:18:30 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.212.175 as permitted sender) client-ip=209.85.212.175; envelope-from=mh.in.england@gmail.com; helo=mail-wi0-f175.google.com; Received: from mail-wi0-f175.google.com ([209.85.212.175]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1YPry1-0000qT-SJ for bitcoin-development@lists.sourceforge.net; Mon, 23 Feb 2015 12:18:30 +0000 Received: by mail-wi0-f175.google.com with SMTP id r20so16368378wiv.2 for ; Mon, 23 Feb 2015 04:18:23 -0800 (PST) MIME-Version: 1.0 X-Received: by 10.194.61.51 with SMTP id m19mr21772322wjr.39.1424693903819; Mon, 23 Feb 2015 04:18:23 -0800 (PST) Sender: mh.in.england@gmail.com Received: by 10.194.188.11 with HTTP; Mon, 23 Feb 2015 04:18:23 -0800 (PST) In-Reply-To: References: <20150222190839.GA18527@odo.localdomain> <54EA5A1C.2020701@AndySchroder.com> <54EA60D9.8000001@voskuil.org> <54EA66F5.2000302@AndySchroder.com> <54EAD884.8000205@AndySchroder.com> <54EAFC1C.9080502@voskuil.org> Date: Mon, 23 Feb 2015 13:18:23 +0100 X-Google-Sender-Auth: -i7Q5R_hjZm2H1PaPy56Aluu-ds Message-ID: From: Mike Hearn To: Andreas Schildbach Content-Type: multipart/alternative; boundary=047d7b66fa5f0d0a34050fc06634 X-Spam-Score: -0.5 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -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 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: 1YPry1-0000qT-SJ Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] Bitcoin at POS using BIP70, NFC and offline payments - implementer feedback 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: Mon, 23 Feb 2015 12:18:31 -0000 --047d7b66fa5f0d0a34050fc06634 Content-Type: text/plain; charset=UTF-8 > > I read from your answer that even if we use ECDHE, we can't use it for > every situation. > Which situations do you mean? I think it can be used in every situation. It's the opposite way around - a fixed session key in the URI cannot be used in every situation. --047d7b66fa5f0d0a34050fc06634 Content-Type: text/html; charset=UTF-8
I read from your answer that even if we use ECDHE, we can't use it for
every situation.

Which situations do you mean? I think it can be used in every situation. It's the opposite way around - a fixed session key in the URI cannot be used in every situation.
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