Re: [dnsext] Validator assumptions: what algorithms need to properly sign a zone?

Edward Lewis <Ed.Lewis@neustar.biz> Mon, 26 March 2012 11:00 UTC

Return-Path: <dnsext-bounces@ietf.org>
X-Original-To: namedroppers-archive-gleetwall6@lists.ietf.org
Delivered-To: ietfarch-namedroppers-archive-gleetwall6@ietfa.amsl.com
Received: from ietfa.amsl.com (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id ECFE621F8601; Mon, 26 Mar 2012 04:00:39 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ietf.org; s=ietf1; t=1332759640; bh=ItF/YANSDSGQ9tDZ84eVnhtw8wpZnb9Q347MaR0keuw=; h=Mime-Version:Message-Id:In-Reply-To:References:Date:To:From:Cc: Subject:List-Id:List-Unsubscribe:List-Archive:List-Post:List-Help: List-Subscribe:Content-Transfer-Encoding:Content-Type:Sender; b=sdtAWq2CYRpxs7Fm1PUqixQKJnHiYBq2qsvdTFtabpPacZvyXRnAiubWWD1K81zzl Lk0h6suyEC+j28EnQmsxS/N9uuRoMKOi1npI6/LmiTH7woGjLLu+djmTCX7y8P5/pv jOLt1BZFrHzcQBRl126nwgrXyy4jdbWwW8LfLuvc=
X-Original-To: dnsext@ietfa.amsl.com
Delivered-To: dnsext@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BE29421F8601 for <dnsext@ietfa.amsl.com>; Mon, 26 Mar 2012 04:00:37 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -106.599
X-Spam-Level:
X-Spam-Status: No, score=-106.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, RCVD_IN_DNSWL_MED=-4, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id a7MkRajZn6Yy for <dnsext@ietfa.amsl.com>; Mon, 26 Mar 2012 04:00:37 -0700 (PDT)
Received: from stora.ogud.com (stora.ogud.com [66.92.146.20]) by ietfa.amsl.com (Postfix) with ESMTP id 15A6921F859A for <dnsext@ietf.org>; Mon, 26 Mar 2012 04:00:36 -0700 (PDT)
Received: from dhcp-45d4.meeting.ietf.org (nyttbox.md.ogud.com [10.20.30.4]) by stora.ogud.com (8.14.4/8.14.4) with ESMTP id q2QB0ZLk063260; Mon, 26 Mar 2012 07:00:35 -0400 (EDT) (envelope-from Ed.Lewis@neustar.biz)
Received: from [130.129.69.212] by dhcp-45d4.meeting.ietf.org (PGP Universal service); Mon, 26 Mar 2012 13:00:35 +0200
X-PGP-Universal: processed; by dhcp-45d4.meeting.ietf.org on Mon, 26 Mar 2012 13:00:35 +0200
Mime-Version: 1.0
Message-Id: <a06240802cb95fb6a7000@[130.129.69.212]>
In-Reply-To: <alpine.LSU.2.00.1203261039150.24583@hermes-2.csi.cam.ac.uk>
References: <4F6C99CB.7080806@ogud.com> <alpine.LSU.2.00.1203231822280.24583@hermes-2.csi.cam.ac.uk> <4F6CE5E0.1090309@ogud.com> <alpine.LSU.2.00.1203261039150.24583@hermes-2.csi.cam.ac.uk>
Date: Mon, 26 Mar 2012 12:55:22 +0200
To: "<dnsext@ietf.org>" <dnsext@ietf.org>
From: Edward Lewis <Ed.Lewis@neustar.biz>
X-Scanned-By: MIMEDefang 2.72 on 10.20.30.4
Cc: ed.lewis@neustar.biz
Subject: Re: [dnsext] Validator assumptions: what algorithms need to properly sign a zone?
X-BeenThere: dnsext@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: DNS Extensions working group discussion list <dnsext.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsext>, <mailto:dnsext-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/dnsext>
List-Post: <mailto:dnsext@ietf.org>
List-Help: <mailto:dnsext-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsext>, <mailto:dnsext-request@ietf.org?subject=subscribe>
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Sender: dnsext-bounces@ietf.org
Errors-To: dnsext-bounces@ietf.org

At 11:00 +0100 3/26/12, Tony Finch wrote:

>They aren't disjoint. I think it makes more sense if who takes what into
>account is the opposite way round to what you suggest. The validation
>algorithm allows for a lot of flexibility and makes validation possible
>despite some kinds of brokenness; the requirements on the signer keep it
>well within the range of what validators allow. Robustness principle.

Yup.
-- 
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Edward Lewis
NeuStar                    You can leave a voice message at +1-571-434-5468

2012...time to reuse those 1984 calendars!
_______________________________________________
dnsext mailing list
dnsext@ietf.org
https://www.ietf.org/mailman/listinfo/dnsext