IETF Logo Mail Archive

Re: [COSE] [IANA #1284212] expert review for draft-ietf-cose-cwt-claims-in-headers (cose)

Carsten Bormann <cabo@tzi.org> Sat, 04 November 2023 19:03 UTC

Return-Path: <cabo@tzi.org>
X-Original-To: cose@ietfa.amsl.com
Delivered-To: cose@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A5DE2C18E521 for <cose@ietfa.amsl.com>; Sat, 4 Nov 2023 12:03:22 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.207
X-Spam-Level:
X-Spam-Status: No, score=-4.207 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id DQ9Aay3vbHZm for <cose@ietfa.amsl.com>; Sat, 4 Nov 2023 12:03:18 -0700 (PDT)
Received: from smtp.zfn.uni-bremen.de (smtp.zfn.uni-bremen.de [134.102.50.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E0096C18E523 for <cose@ietf.org>; Sat, 4 Nov 2023 12:03:15 -0700 (PDT)
Received: from smtpclient.apple (unknown [IPv6:2001:67c:370:128:b841:8052:a08d:ede9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.zfn.uni-bremen.de (Postfix) with ESMTPSA id 4SN6Sw6fXrzDCd6; Sat, 4 Nov 2023 20:03:12 +0100 (CET)
Content-Type: text/plain; charset="utf-8"
Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.200.91.1.1\))
From: Carsten Bormann <cabo@tzi.org>
In-Reply-To: <4F61896C-4BAD-436E-AC31-3F50E9B93BF7@island-resort.com>
Date: Sat, 04 Nov 2023 20:03:01 +0100
Cc: Michael Jones <michael_b_jones@hotmail.com>, Francesca Palombini <francesca.palombini@ericsson.com>, "drafts-expert-review-comment@iana.org" <drafts-expert-review-comment@iana.org>, "cose@ietf.org" <cose@ietf.org>, "paul.wouters@aiven.io" <paul.wouters@aiven.io>
Content-Transfer-Encoding: quoted-printable
Message-Id: <B7F75895-A2CD-4BDB-BDD9-08AE784690A2@tzi.org>
References: <RT-Ticket-1284212@icann.org> <rt-5.0.3-580051-1697567816-1595.1284212-9-0@icann.org> <rt-5.0.3-580636-1697568304-0.1284212-9-0@icann.org> <AS1PR07MB8616EFA12DB4F47075B7AB5198DDA@AS1PR07MB8616.eurprd07.prod.outlook.com> <MW4PR02MB7428022AEA2B4574410EE7EEB7DDA@MW4PR02MB7428.namprd02.prod.outlook.com> <AS1PR07MB8616E407B141D0C56F7EC65398DCA@AS1PR07MB8616.eurprd07.prod.outlook.com> <F465B3E6-B2CA-4580-B006-5DE7D8E9AABD@tzi.org> <MW4PR02MB7428E1B8942D1D64A825B0EEB7DCA@MW4PR02MB7428.namprd02.prod.outlook.com> <D4A1FC53-8D45-455B-8DF0-F3692F96AE4A@tzi.org> <MW4PR02MB7428A11CC4B4061109E5A07DB7DCA@MW4PR02MB7428.namprd02.prod.outlook.com> <56022A38-8D1A-4C65-A535-E3D45F3C3C7E@tzi.org> <MW4PR02MB7428751A6DC9804B8B15B66BB7DCA@MW4PR02MB7428.namprd02.prod.outlook.com> <641BD038-522A-41C2-B2C2-9E3C118DE915@tzi.org> <MW4PR02MB7428C73DA8A708AB8B860923B7DCA@MW4PR02MB7428.namprd02.prod.outlook.com> <4F61896C-4BAD-436E-AC31-3F50E9B93BF7@island-resort.com>
To: "lgl island-resort.com" <lgl@island-resort.com>
X-Mailer: Apple Mail (2.3774.200.91.1.1)
Archived-At: <https://mailarchive.ietf.org/arch/msg/cose/iNxh87j2TCzBNmFH7u9BUsKdS1I>
Subject: Re: [COSE] [IANA #1284212] expert review for draft-ietf-cose-cwt-claims-in-headers (cose)
X-BeenThere: cose@ietf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: CBOR Object Signing and Encryption <cose.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/cose>, <mailto:cose-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/cose/>
List-Post: <mailto:cose@ietf.org>
List-Help: <mailto:cose-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/cose>, <mailto:cose-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 04 Nov 2023 19:03:22 -0000

On Oct 27, 2023, at 20:57, lgl island-resort.com <lgl@island-resort.com> wrote:
> 
> It seems like this is in hand, but FYI, in EAT, we want to use ccs to bring the “eat_profile” claim up from the CWT Claims-Set to the top level so that dispatch of the EAT processing can be done before processing COSE. It is possible that COSE is providing encryption making it a lot of work to access the “eat_profile" claim.  The “eat_profile" is kind of a sub-type mechanism in EAT.

This is an interesting example.

It seems more obvious to me to just extract that one claim and define a parameter, with well-defined semantics!, for just that.

(I don’t know whether an eat_profile actually influences the semantics of the COSE data item or just restricts it in its expressiveness, so I’ll not detail this further, but I think it should be clear what I mean anyway.)

Grüße, Carsten

v2.23.0 | Report a Bug | By Email