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[Rats] Re: UCCS and EAT media types (was: Re: Re: AD follow-up review of draft-ietf-rats-uccs-09)

Thomas Fossati <thomas.fossati@linaro.org> Fri, 07 June 2024 02:27 UTC

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From: Thomas Fossati <thomas.fossati@linaro.org>
Date: Thu, 06 Jun 2024 19:26:57 -0700
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To: Henk Birkholz <henk.birkholz@ietf.contact>
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Subject: [Rats] Re: UCCS and EAT media types (was: Re: Re: AD follow-up review of draft-ietf-rats-uccs-09)
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Hi Henk,

On Thu, 6 Jun 2024 at 05:29, Henk Birkholz <henk.birkholz@ietf.contact> wrote:
> it is perfectly fine to define useful informative CDDL definitions in an
> Appendix (that we have to mark as informative) and then let other
> specification use that definition in an informative or normative manner.
>
> It is also very useful :-)

I agree it's useful.
(I am not 100% convinced an appendix can only contain informative
stuff, but if that is the case then be it.)

> I do not think that removing the UJCS
> reference from draft-ietf-rats-eat-media-type is useful or necessary,

The problem, at the moment, is there seems to be no anchoring document for UJCS.

I have the following proposal:

1. We remove types for UCCS and UJCS from the EAT media-types document
and only define types for CWT, JWT, BUN-J, BUN-C.

2. The UCCS document defines the (EAT) media type for UCCS (we can do
a simple transplant from EAT m-t).

3. A new, separate UJCS document is spawned that references the CDDL
in Appendix C of UCCS to normatively define UJCS and its (EAT) media
type (again, a simple transplant from EAT m-t).

What do you think?

cheers, t

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