IETF Logo Mail Archive

Re: [Anima-bootstrap] anima-bootstrap: Bootstrap proxy discovery options

Brian E Carpenter <brian.e.carpenter@gmail.com> Wed, 09 December 2015 18:59 UTC

Return-Path: <brian.e.carpenter@gmail.com>
X-Original-To: anima-bootstrap@ietfa.amsl.com
Delivered-To: anima-bootstrap@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B40501AC3E7 for <anima-bootstrap@ietfa.amsl.com>; Wed, 9 Dec 2015 10:59:31 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2
X-Spam-Level:
X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, SPF_PASS=-0.001] autolearn=ham
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EKDyl7Wxb4F9 for <anima-bootstrap@ietfa.amsl.com>; Wed, 9 Dec 2015 10:59:30 -0800 (PST)
Received: from mail-pa0-x229.google.com (mail-pa0-x229.google.com [IPv6:2607:f8b0:400e:c03::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9C69B1A1A7B for <anima-bootstrap@ietf.org>; Wed, 9 Dec 2015 10:59:30 -0800 (PST)
Received: by pabur14 with SMTP id ur14so34014387pab.0 for <anima-bootstrap@ietf.org>; Wed, 09 Dec 2015 10:59:30 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:to:references:cc:from:organization:message-id:date :user-agent:mime-version:in-reply-to:content-type :content-transfer-encoding; bh=mSfzsnD36xFxC+yP4ydKhaipPrxWlYvCqzGLfoQJToo=; b=M0OKfNARTZI6jgSXr1zK78yHhZuDQNGKMcjRXc1nCKxQPGhhqColsBjwC9z6MKvAiY JPfWy7gFXqVOOMoPLSYe0uSKOrUQYnSsPzTpgNkww4WMqehuzRABnAGhVgwrsSe4DeBY 7NJQV/qEFiaUAy8Ec51zK3fcbeL1o4IeEEiuvjo1yZFDtfq+w5J5sEYCGtUVdWg/xbXm vI7mEnMMQ1a6a2Uz0W15B3VEDAQkOJInEP8gYZTY5OEuZJ22Nl5KoHOlPvYSm5hD6iIt 4+JroGQKn/3QfcQ1yzj9F9cQYMy2m+F1qZrTRcbqs+AsbiJpx3qUcKcQyk9dVnKoAEeH ZUZA==
X-Received: by 10.66.102.4 with SMTP id fk4mr10341357pab.85.1449687570015; Wed, 09 Dec 2015 10:59:30 -0800 (PST)
Received: from ?IPv6:2406:e007:6917:1:28cc:dc4c:9703:6781? ([2406:e007:6917:1:28cc:dc4c:9703:6781]) by smtp.gmail.com with ESMTPSA id w1sm13271835pfa.57.2015.12.09.10.59.26 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 09 Dec 2015 10:59:28 -0800 (PST)
To: "Toerless Eckert (eckert)" <eckert@cisco.com>
References: <20151204014333.GZ29056@cisco.com> <A4DCBB7E-A722-4AC1-A7B7-BD185ABEBF7F@cisco.com> <13379.1449515233@dooku.sandelman.ca> <20D831CB-5075-4899-9C4F-D3D04334B1CF@cisco.com> <2495.1449614267@dooku.sandelman.ca> <43C69994-D02E-44A0-A739-4A6E45A3CE8C@cisco.com> <566776A4.4080804@gmail.com> <20151209131234.GN29056@cisco.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
Message-ID: <56687A15.7070305@gmail.com>
Date: Thu, 10 Dec 2015 07:59:33 +1300
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0
MIME-Version: 1.0
In-Reply-To: <20151209131234.GN29056@cisco.com>
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Archived-At: <http://mailarchive.ietf.org/arch/msg/anima-bootstrap/18J-LgCgu_ok0k9_jRWl0Aao-Jk>
Cc: Michael Richardson <mcr+ietf@sandelman.ca>, "Max Pritikin (pritikin)" <pritikin@cisco.com>, "anima-bootstrap@ietf.org" <anima-bootstrap@ietf.org>
Subject: Re: [Anima-bootstrap] anima-bootstrap: Bootstrap proxy discovery options
X-BeenThere: anima-bootstrap@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Mailing list for the bootstrap design team of the ANIMA WG <anima-bootstrap.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/anima-bootstrap>, <mailto:anima-bootstrap-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/anima-bootstrap/>
List-Post: <mailto:anima-bootstrap@ietf.org>
List-Help: <mailto:anima-bootstrap-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/anima-bootstrap>, <mailto:anima-bootstrap-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 09 Dec 2015 18:59:31 -0000

On 10/12/2015 02:12, Toerless Eckert (eckert) wrote:
...
> I am happy about any new valuable crypto we can put into the discovery, i just
> want to make sure we can be precise about the attack vector it helps to protect
> against.

I very much agree with that. I wasn't actually saying we must add a public
key for the first exchange, just that we *could*. Actually the attack that really
puzzles me is this one:

Alice: Hello everybody, I want to join.

Bob: Hi Alice, I'll be your proxy today.
Eve: Hi Alice, I'll be your proxy today.

How does Alice know to listen to Bob and ignore Eve?
At that point she has no keys or certificates for Bob.

   Brian

v2.23.0 | Report a Bug | By Email