IETF Logo Mail Archive

Re: [6lo] Generation of IPv6 IIDs

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 23 July 2014 20:19 UTC

Return-Path: <mcr@sandelman.ca>
X-Original-To: 6lo@ietfa.amsl.com
Delivered-To: 6lo@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 61BBD1B27FD for <6lo@ietfa.amsl.com>; Wed, 23 Jul 2014 13:19:55 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.892
X-Spam-Level:
X-Spam-Status: No, score=-1.892 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, T_TVD_MIME_NO_HEADERS=0.01] 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 K50Ir8IB5sVL for <6lo@ietfa.amsl.com>; Wed, 23 Jul 2014 13:19:53 -0700 (PDT)
Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9E8911B27D2 for <6lo@ietf.org>; Wed, 23 Jul 2014 13:19:53 -0700 (PDT)
Received: from sandelman.ca (obiwan.sandelman.ca [209.87.249.21]) by tuna.sandelman.ca (Postfix) with ESMTP id B9AF820012; Wed, 23 Jul 2014 16:21:34 -0400 (EDT)
Received: by sandelman.ca (Postfix, from userid 179) id 6E52363B0E; Wed, 23 Jul 2014 16:19:52 -0400 (EDT)
Received: from sandelman.ca (localhost [127.0.0.1]) by sandelman.ca (Postfix) with ESMTP id 54DD563B0A; Wed, 23 Jul 2014 16:19:52 -0400 (EDT)
From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Samita Chakrabarti <samita.chakrabarti@ericsson.com>
In-Reply-To: <ECA43DA70480A3498E43C3471FB2E1F01C1FC83E@eusaamb103.ericsson.se>
References: <5361A67D.4010508@si6networks.com> <ECA43DA70480A3498E43C3471FB2E1F01C1FBD12@eusaamb103.ericsson.se> <28845.1406049963@sandelman.ca> <ECA43DA70480A3498E43C3471FB2E1F01C1FC83E@eusaamb103.ericsson.se>
X-Mailer: MH-E 8.2; nmh 1.3-dev; GNU Emacs 23.4.1
X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m<nPbLgmtKK-5dC@#:k
MIME-Version: 1.0
Content-Type: multipart/signed; boundary="=-=-="; micalg="pgp-sha1"; protocol="application/pgp-signature"
Date: Wed, 23 Jul 2014 16:19:52 -0400
Message-ID: <9725.1406146792@sandelman.ca>
Sender: mcr@sandelman.ca
Archived-At: http://mailarchive.ietf.org/arch/msg/6lo/JkgfNtgJgWbi8pXtGoYseSLQSc0
Cc: "6lo-chairs@tools.ietf.org" <6lo-chairs@tools.ietf.org>, "6man Chairs (6man-chairs@tools.ietf.org)" <6man-chairs@tools.ietf.org>, Dave Thaler <dthaler@microsoft.com>, "6lo@ietf.org" <6lo@ietf.org>, Fernando Gont <fgont@si6networks.com>, "draft-ietf-6man-default-iids@tools.ietf.org" <draft-ietf-6man-default-iids@tools.ietf.org>
Subject: Re: [6lo] Generation of IPv6 IIDs
X-BeenThere: 6lo@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: "Mailing list for the 6lo WG for Internet Area issues in IPv6 over constrained node networks." <6lo.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/6lo>, <mailto:6lo-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/6lo/>
List-Post: <mailto:6lo@ietf.org>
List-Help: <mailto:6lo-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/6lo>, <mailto:6lo-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 23 Jul 2014 20:19:55 -0000

Samita Chakrabarti <samita.chakrabarti@ericsson.com> wrote:
    > Thanks for adding this point. Perhaps it can be included as one of the
    > reasons for exceptions for EUI-64based IPv6 addresses.  Michael, a
    > novice question : Can you please elaborate use of 802.1AR device
    > security in 6lo/6tisch type of devices ? ie are they going to be
    > available as an option/default for the 802.15.4 devices?

All of 802.1AR can be implemented in software, provided with a 1k of
"parameter" flash for the private key, and some ECDSA libraries...
clearly, there are advantages to having it all in a tamper-proof hardware
module and the 802.1AR document spends some space explaining all the
requirements that such a device should support;
And currently available devices with ECDSA/AES hardware can certainly do it
all cheaper and at lower energy.

(I hope to have the resources to implement something in Contiki at some point
this year.)

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-

v2.23.0 | Report a Bug | By Email