Re: [DNSOP] on staleness of code points and code (mentions MD5 commentary from IETF98)

Tony Finch <dot@dotat.at> Tue, 28 March 2017 14:36 UTC

Return-Path: <dot@dotat.at>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 00C991296B4 for <dnsop@ietfa.amsl.com>; Tue, 28 Mar 2017 07:36:51 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.221
X-Spam-Level:
X-Spam-Status: No, score=-4.221 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_PASS=-0.001] autolearn=ham autolearn_force=no
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 H_bPJ-x1BALA for <dnsop@ietfa.amsl.com>; Tue, 28 Mar 2017 07:36:49 -0700 (PDT)
Received: from ppsw-33.csi.cam.ac.uk (ppsw-33.csi.cam.ac.uk [131.111.8.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1EF051296ED for <dnsop@ietf.org>; Tue, 28 Mar 2017 07:36:44 -0700 (PDT)
X-Cam-AntiVirus: no malware found
X-Cam-ScannerInfo: http://help.uis.cam.ac.uk/email-scanner-virus
Received: from grey.csi.cam.ac.uk ([131.111.57.57]:49692) by ppsw-33.csi.cam.ac.uk (ppsw.cam.ac.uk [131.111.8.137]:25) with esmtps (TLSv1:ECDHE-RSA-AES256-SHA:256) id 1cssEi-000J0c-j8 (Exim 4.89) (return-path <dot@dotat.at>); Tue, 28 Mar 2017 15:36:41 +0100
Date: Tue, 28 Mar 2017 15:36:40 +0100
From: Tony Finch <dot@dotat.at>
To: =?UTF-8?Q?Jan_V=C4=8Del=C3=A1k?= <jv@fcelda.cz>
cc: Evan Hunt <each@isc.org>, "dnsop@ietf.org" <dnsop@ietf.org>, Paul Vixie <paul@redbarn.org>
In-Reply-To: <CAM1xaJ-gCKqm63BuNszLxyt0_HevXSwB5H0+wg4ugatZSFJNPA@mail.gmail.com>
Message-ID: <alpine.DEB.2.11.1703281532260.13590@grey.csi.cam.ac.uk>
References: <58D96BC0.9040701@redbarn.org> <20170328024127.GC96991@isc.org> <CAM1xaJ-gCKqm63BuNszLxyt0_HevXSwB5H0+wg4ugatZSFJNPA@mail.gmail.com>
User-Agent: Alpine 2.11 (DEB 23 2013-08-11)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/R8Zg0Wk4Rw1s4sUdoitk-R_dloE>
Subject: Re: [DNSOP] on staleness of code points and code (mentions MD5 commentary from IETF98)
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: IETF DNSOP WG mailing list <dnsop.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsop>, <mailto:dnsop-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dnsop/>
List-Post: <mailto:dnsop@ietf.org>
List-Help: <mailto:dnsop-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsop>, <mailto:dnsop-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 28 Mar 2017 14:36:51 -0000

Chris Thompson just mentioned to me another reason for dropping support
for RSAMD5: it uses a different DNSKEY tag calculation, which implies that
dropping support should simplify validators more than dropping other
algorithms.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/  -  I xn--zr8h punycode
Forties: Variable 3 or 4. Slight or moderate. Drizzle, showers later. Moderate
or good, occasionally poor.