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Re: [stir] PASSporT extensions: order of claims

Christer Holmberg <christer.holmberg@ericsson.com> Tue, 13 March 2018 19:58 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "Politz, Ken" <Kenneth.Politz@team.neustar>, Chris Wendt <chris-ietf@chriswendt.net>
CC: "stir@ietf.org" <stir@ietf.org>, "adam@nostrum.com" <adam@nostrum.com>
Thread-Topic: [stir] PASSporT extensions: order of claims
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Date: Tue, 13 Mar 2018 19:58:10 +0000
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Subject: Re: [stir] PASSporT extensions: order of claims
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Hi,

>Try RFC 8225, Section 9, perhaps?

Ok, so if that’s a generic rule, why the statement saying that PASSporT extensions must specify the order?

Regards,

Christer

From: Christer Holmberg [mailto:christer.holmberg@ericsson.com]
Sent: Tuesday, March 13, 2018 2:47 PM
To: Chris Wendt <chris-ietf@chriswendt.net<mailto:chris-ietf@chriswendt.net>>
Cc: stir@ietf.org<mailto:stir@ietf.org>; adam@nostrum.com<mailto:adam@nostrum.com>
Subject: Re: [stir] PASSporT extensions: order of claims

Hi,

>I would agree with the text, the only caveat i would point out is that the extension definition has
>no choice to the order other than alphabetic order, so the order is essentially implied.  So, it’s sort
>of a technicality that maybe we didn’t anticipate, but i think technically you are correct.

Not sure I understand the has-no-choice part. Where is it said that the claims must be ordered in alphabetic order? We could for sure specify it that way, but based on your e-mail it seems like it is already specified somewhere?

Regards,

Christer


On Mar 10, 2018, at 8:27 AM, Christer Holmberg <christer.holmberg@ericsson.com<mailto:christer.holmberg@ericsson.com>> wrote:

Section 8.3 of RFC 8225, that is.

From: stir [mailto:stir-bounces@ietf.org] On Behalf Of Christer Holmberg
Sent: 10 March 2018 15:26
To: stir@ietf.org<mailto:stir@ietf.org>
Cc: adam@nostrum.com<mailto:adam@nostrum.com>
Subject: [stir] PASSporT extensions: order of claims

Hi,

Section  says:

   “Specifications that define extensions to the PASSporT mechanism MUST
   explicitly specify what claims they include beyond the base set of
   claims from this document, the order in which they will appear,…”

When looking at the extensions we are currently working on:

draft-ietf-stir-rph-03
draft-ietf-stir-passport-shaken-01
draft-ietf-stir-passport-divert-02

…I don’t see anything about the order in any of the documents.

I think it would be good to have a dedicated “Order of claims” section, or something similar, in each extension specification.

When looking at the examples in the drafts above, it seems like even the base claims are in different orders. Not sure whether there is an explicit requirement that they need to be in order, thought.

Regards,

Christer


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