Re: [Ace] Group Communication Security Disagreements
Paul Duffy <paduffy@cisco.com> Thu, 28 July 2016 14:31 UTC
Return-Path: <paduffy@cisco.com>
X-Original-To: ace@ietfa.amsl.com
Delivered-To: ace@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2CBFA12D79B for <ace@ietfa.amsl.com>; Thu, 28 Jul 2016 07:31:11 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -15.808
X-Spam-Level:
X-Spam-Status: No, score=-15.808 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-1.287, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com
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 MM5bvtmEkBNu for <ace@ietfa.amsl.com>; Thu, 28 Jul 2016 07:31:08 -0700 (PDT)
Received: from aer-iport-4.cisco.com (aer-iport-4.cisco.com [173.38.203.54]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id EAE2F12D7A2 for <ace@ietf.org>; Thu, 28 Jul 2016 07:31:07 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=402; q=dns/txt; s=iport; t=1469716268; x=1470925868; h=reply-to:subject:references:to:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=WfUWDQYgNg9XJ3PnqaqEbELpYQhv9EDhB48Q/YpZe7I=; b=KL6x5YvHXH8Va96i40pmQoDs3jjc/owS+ayH+SLgAuLB0aF6ynd0Kd9e g2Dqd/5W12KeD6sYnVulfIvZdyq5BdWIIJaJHiwB6Pxkl/l+5SFTll/PJ oJWcLOGHg023w3/uBFFks4E25Rzkq7V1M+EhCZkeN3JPlvaOuglc4TPjt U=;
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: A0D/EQB5FppX/xbLJq1dhEW7QYYdAoF/AQEBAQEBXidBEAGECwEFOFELGC5XEwgBAYgttCiHJwEBAQEGAiWGKoF4CIJNhQyFDwEEmTKOfYFVAYd9hWyIZoNIg3hUhBYghgaDIwEBAQ
X-IronPort-AV: E=Sophos;i="5.28,434,1464652800"; d="scan'208";a="639773841"
Received: from aer-iport-nat.cisco.com (HELO aer-core-3.cisco.com) ([173.38.203.22]) by aer-iport-4.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jul 2016 14:31:06 +0000
Received: from [10.131.65.123] (dhcp-10-131-65-123.cisco.com [10.131.65.123]) by aer-core-3.cisco.com (8.14.5/8.14.5) with ESMTP id u6SEV5ZK005518 for <ace@ietf.org>; Thu, 28 Jul 2016 14:31:06 GMT
References: <57909032.10809@gmx.net> <6d259c5b-28e3-c748-4590-0c9f942fe343@comcast.net> <378a0359-6b31-a30c-af28-8ea567b06b00@cisco.com> <57963480.2000809@gmx.net> <0d4c6d56-ebb5-2f43-d555-29c336396033@ericsson.com> <15169.1469642303@obiwan.sandelman.ca> <CAHbuEH4u=AF1LSoDq+YfLwt+VX1OOrj54331GuZmyjLswHvNnw@mail.gmail.com> <3271.1469656595@obiwan.sandelman.ca> <32aa7104-70df-80c7-8d6e-537b66716de9@comcast.net> <13663.1469714549@obiwan.sandelman.ca>
To: ace@ietf.org
From: Paul Duffy <paduffy@cisco.com>
Organization: Cisco Systems
Message-ID: <933e2ae6-bf40-fcbf-8408-6f605dcf1aae@cisco.com>
Date: Thu, 28 Jul 2016 10:31:05 -0400
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0
MIME-Version: 1.0
In-Reply-To: <13663.1469714549@obiwan.sandelman.ca>
Content-Type: text/plain; charset="windows-1252"; format="flowed"
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/ace/P2S0cICINadgG7K8FWhKuoaXQsE>
Subject: Re: [Ace] Group Communication Security Disagreements
X-BeenThere: ace@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
Reply-To: paduffy@cisco.com
List-Id: "Authentication and Authorization for Constrained Environments \(ace\)" <ace.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ace>, <mailto:ace-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ace/>
List-Post: <mailto:ace@ietf.org>
List-Help: <mailto:ace-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ace>, <mailto:ace-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 28 Jul 2016 14:31:11 -0000
+1 On 7/28/2016 10:02 AM, Michael Richardson wrote: > I'm not convinced. What I have taken home is that people think they want to > use symmetric keys, and perhaps it might be safe among completely equivalent > devices. I take your point (strongly) that this bubble will be broken, with > catastrophic results. We need asymmetric methods between bubbles, and we > need to define that early.
- Re: [Ace] Group Communication Security Disagreeme… Michael Richardson
- Re: [Ace] Group Communication Security Disagreeme… Mohit Sethi
- Re: [Ace] Group Communication Security Disagreeme… Hannes Tschofenig
- Re: [Ace] Group Communication Security Disagreeme… Mohit Sethi
- Re: [Ace] Group Communication Security Disagreeme… Eliot Lear
- Re: [Ace] Group Communication Security Disagreeme… Hannes Tschofenig
- Re: [Ace] Group Communication Security Disagreeme… Eliot Lear
- Re: [Ace] Group Communication Security Disagreeme… Hannes Tschofenig
- Re: [Ace] Group Communication Security Disagreeme… Derek Atkins
- Re: [Ace] Group Communication Security Disagreeme… Eliot Lear
- Re: [Ace] Group Communication Security Disagreeme… Michael StJohns
- [Ace] (on signature verification times) Re: Group… Rene Struik
- [Ace] Group Communication Security Disagreements Hannes Tschofenig
- Re: [Ace] Group Communication Security Disagreeme… Derek Atkins
- Re: [Ace] Group Communication Security Disagreeme… Eliot Lear
- Re: [Ace] Group Communication Security Disagreeme… Paul Duffy
- Re: [Ace] Group Communication Security Disagreeme… Michael Richardson
- Re: [Ace] Group Communication Security Disagreeme… Grunwald, Markus
- Re: [Ace] Group Communication Security Disagreeme… Michael StJohns
- Re: [Ace] Group Communication Security Disagreeme… Michael Richardson
- Re: [Ace] Group Communication Security Disagreeme… Kathleen Moriarty
- Re: [Ace] Group Communication Security Disagreeme… Michael StJohns
- Re: [Ace] Group Communication Security Disagreeme… Ludwig Seitz
- Re: [Ace] Group Communication Security Disagreeme… Eliot Lear
- Re: [Ace] Group Communication Security Disagreeme… Somaraju Abhinav
- Re: [Ace] Group Communication Security Disagreeme… Eliot Lear
- Re: [Ace] Group Communication Security Disagreeme… Michael StJohns
- Re: [Ace] Group Communication Security Disagreeme… Eliot Lear
- Re: [Ace] Group Communication Security Disagreeme… Michael StJohns