IETF Logo Mail Archive

Re: [dane] Digest Algorithm Agility discussion (checkpoint)

Scott Rose <scottr.nist@gmail.com> Wed, 19 March 2014 14:52 UTC

Return-Path: <scottr.nist@gmail.com>
X-Original-To: dane@ietfa.amsl.com
Delivered-To: dane@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id AB7C01A0764 for <dane@ietfa.amsl.com>; Wed, 19 Mar 2014 07:52:04 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.633
X-Spam-Level:
X-Spam-Status: No, score=-2.633 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_MED=-2.3, SPF_SOFTFAIL=0.665] 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 f16_aaXiOrEs for <dane@ietfa.amsl.com>; Wed, 19 Mar 2014 07:52:01 -0700 (PDT)
Received: from wsget1.nist.gov (wsget1.nist.gov [129.6.13.150]) by ietfa.amsl.com (Postfix) with ESMTP id CA0C61A045A for <dane@ietf.org>; Wed, 19 Mar 2014 07:52:00 -0700 (PDT)
Received: from WSXGHUB1.xchange.nist.gov (129.6.18.96) by wsget1.nist.gov (129.6.13.150) with Microsoft SMTP Server (TLS) id 14.3.174.1; Wed, 19 Mar 2014 10:51:12 -0400
Received: from postmark.nist.gov (129.6.16.94) by WSXGHUB1.xchange.nist.gov (129.6.18.96) with Microsoft SMTP Server (TLS) id 8.3.327.1; Wed, 19 Mar 2014 10:51:51 -0400
Received: from 6-140.antd.nist.gov (6-140.antd.nist.gov [129.6.140.6]) by postmark.nist.gov (8.13.8/8.13.1) with ESMTP id s2JEpcf7006528 for <dane@ietf.org>; Wed, 19 Mar 2014 10:51:38 -0400
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0 (Mac OS X Mail 7.2 \(1874\))
From: Scott Rose <scottr.nist@gmail.com>
In-Reply-To: <20140319143527.GX24183@mournblade.imrryr.org>
Date: Wed, 19 Mar 2014 10:51:39 -0400
Content-Transfer-Encoding: quoted-printable
Message-ID: <B1283086-7DA0-42E0-ABB2-801DBEC5292F@gmail.com>
References: <20140318200004.GU24183@mournblade.imrryr.org> <2D59247F-0B0F-4CE7-A4D2-F57EE4167099@gmail.com> <20140319143527.GX24183@mournblade.imrryr.org>
To: dane@ietf.org
X-Mailer: Apple Mail (2.1874)
X-NIST-MailScanner-Information:
Archived-At: http://mailarchive.ietf.org/arch/msg/dane/9rlPHM3BBsRnT8UhZxnbpmmz4sw
Subject: Re: [dane] Digest Algorithm Agility discussion (checkpoint)
X-BeenThere: dane@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DNS-based Authentication of Named Entities <dane.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dane>, <mailto:dane-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/dane/>
List-Post: <mailto:dane@ietf.org>
List-Help: <mailto:dane-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dane>, <mailto:dane-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 19 Mar 2014 14:52:05 -0000

On Mar 19, 2014, at 10:35 AM, Viktor Dukhovni <viktor1dane@dukhovni.org> wrote:

> On Wed, Mar 19, 2014 at 10:08:38AM -0400, Scott Rose wrote:
> 
>> On Mar 18, 2014, at 4:00 PM, Viktor Dukhovni <viktor1dane@dukhovni.org> wrote:
>> 
>>> My sense is that regardless, there is not much enthusias for
>>> negotiating a single digest based on what digests the server offers,
>>> with the client choosing its most preferred one.
>>> 
>>> Is this an accurate summary of the group's consensus view?  Does
>>> anyone want to defend the view of TLSA digests as a menu of options
>>> from which the client can choose one?
>> 
>> Don't know about the rest of the WG, but it's mine.  Some communities have
>> a larger local policy that they want to enforce, and the client will prefer
>> that primarily, with potential fallbacks.
> 
> Sorry, could you confirm the meaning of the above sentence?  Probably
> my fault, but I am not 100% sure whether you're saying that clients:
> 
>    - should (proposed agility protocol)
>    - may (employ adaptive local policy that amounts to the above), or
>    - must not
> 

The document should drop the algorithm agility text.  RFC 6698 is enough IMHO.   

Scott



> 
> -- 
> 	Viktor.
> 
> _______________________________________________
> dane mailing list
> dane@ietf.org
> https://www.ietf.org/mailman/listinfo/dane

v2.23.0 | Report a Bug | By Email