Re: [Trans] Policy for adding to IANA registries requested in 6962-bis

Rob Stradling <rob.stradling@comodo.com> Wed, 14 December 2016 11:47 UTC

Return-Path: <rob.stradling@comodo.com>
X-Original-To: trans@ietfa.amsl.com
Delivered-To: trans@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 615C9129DDC for <trans@ietfa.amsl.com>; Wed, 14 Dec 2016 03:47:03 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.2
X-Spam-Level:
X-Spam-Status: No, score=-4.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3] 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 QaLSDM6AHdII for <trans@ietfa.amsl.com>; Wed, 14 Dec 2016 03:47:00 -0800 (PST)
Received: from mmextmx2.mcr.colo.comodoca.net (mmextmx2.mcr.colo.comodoca.net [IPv6:2a02:1788:402:c00::c0a8:9cd6]) (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 36565129DC8 for <trans@ietf.org>; Wed, 14 Dec 2016 03:46:58 -0800 (PST)
Received: (qmail 16186 invoked by uid 1004); 14 Dec 2016 11:46:56 -0000
Received: from ian.brad.office.comodo.net (HELO ian.brad.office.comodo.net) (192.168.0.202) by mmextmx2.mcr.colo.comodoca.net (qpsmtpd/0.84) with ESMTP; Wed, 14 Dec 2016 11:46:56 +0000
Received: (qmail 30910 invoked by uid 1000); 14 Dec 2016 11:46:56 -0000
Received: from and0004.comodo.net (HELO [192.168.0.58]) (192.168.0.58) (smtp-auth username rob, mechanism plain) by ian.brad.office.comodo.net (qpsmtpd/0.40) with (AES128-SHA encrypted) ESMTPSA; Wed, 14 Dec 2016 11:46:56 +0000
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>, Bill Frantz <frantz@pwpconsult.com>, Andrew Ayer <agwa@andrewayer.name>
References: <r470Ps-10121i-019CF7E50A5744F38D78ABB70C8C48F5@Williams-MacBook-Pro.local> <5e6de6cc-4d3a-d380-d923-8933f51d9a0d@cs.tcd.ie>
From: Rob Stradling <rob.stradling@comodo.com>
Message-ID: <6bb9057e-82fa-99fc-943d-cdaecd5d1401@comodo.com>
Date: Wed, 14 Dec 2016 11:46:55 +0000
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1
MIME-Version: 1.0
In-Reply-To: <5e6de6cc-4d3a-d380-d923-8933f51d9a0d@cs.tcd.ie>
Content-Type: text/plain; charset="windows-1252"; format="flowed"
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/trans/asdkUG3GflJblp_oFyz-RkAPxtE>
Cc: Eran Messeri <eranm@google.com>, trans@ietf.org
Subject: Re: [Trans] Policy for adding to IANA registries requested in 6962-bis
X-BeenThere: trans@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: Public Notary Transparency working group discussion list <trans.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/trans>, <mailto:trans-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/trans/>
List-Post: <mailto:trans@ietf.org>
List-Help: <mailto:trans-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/trans>, <mailto:trans-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 14 Dec 2016 11:47:03 -0000

FYI, I've been revamping the 6962-bis registry sections in this PR:
https://github.com/google/certificate-transparency-rfcs/pull/216

On 14/12/16 00:48, Stephen Farrell wrote:
>
> Hiya,
>
> Just a comment from the sidelines...
>
> On 14/12/16 00:20, Bill Frantz wrote:
>>
>> "Suitable for use as a cryptographic hash with no known preimage or
>> collision attacks. These attacks can damage the integrity of the log."
>
> If taking this approach it might be useful to consider the
> duration for which any such properties are desired, e.g. to
> consider how that duration maps to hashes used in certificate
> signing would seem like a natural enough thing to do. And it
> might even be the case that such consideration provides a way
> to avoid a separate registry maybe, not sure.
>
> S.

-- 
Rob Stradling
Senior Research & Development Scientist
COMODO - Creating Trust Online