Re: [Rats] Call for adoption (after draft rename) for Yang module draft

Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com> Mon, 18 November 2019 12:43 UTC

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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Mon, 18 Nov 2019 07:42:52 -0500
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To: =?UTF-8?B?U2Now7Zud8OkbGRlciwgSsO8cmdlbg==?= <J.Schoenwaelder@jacobs-university.de>
Cc: Laurence Lundblade <lgl@island-resort.com>, "Smith, Ned" <ned.smith@intel.com>, Henk Birkholz <henk.birkholz@sit.fraunhofer.de>, "Nancy Cam-Winget (ncamwing)" <ncamwing@cisco.com>, "Oliver, Ian (Nokia - FI/Espoo)" <ian.oliver@nokia-bell-labs.com>, Dave Thaler <dthaler@microsoft.com>, "rats@ietf.org" <rats@ietf.org>
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Subject: Re: [Rats] Call for adoption (after draft rename) for Yang module draft
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In reading this thread, I do hope we don't spend a lot of time on the
definition of a token.  I think it's been stated pretty clearly in this
thread, so let's just get it down in a document and move on.  I did see one
place mention a set of claims is a token (the point in the thread argued
that and I agree as it's more than just claims).  A token is some data,
some claims, and a signature.  I think it was Jurgen's previous message to
this one that had a pretty good definition.

Also on the point of binary - when I present anything that has to do with
JOSE and COSE, this is one of the things I start out with as the
differences between the two as well as COSE being designed for constrained
devices, so it's more compact.  Perhaps stating a preference for CWT with
this justification makes sense to someone else's point about not supporting
multiple formats.  This would continue to support multiple formats for
EATs, but would set a recommendation.  I won't go as far as to say a
Mandatory to implement as that doesn't make sense in a full JSON
environment where you wouldn't want to introduce COSE.

Sorry for the top post.  This was a long thread to catch up on and the
other points from my thoughts were addressed.

Thanks,
Kathleen

On Thu, Nov 14, 2019 at 9:06 AM Schönwälder, Jürgen <
J.Schoenwaelder@jacobs-university.de>; wrote:

> On Wed, Nov 13, 2019 at 10:07:02AM -0800, Laurence Lundblade wrote:
> >
> > I see EAT as applicable to all these worlds, where the YANG module is
> just for the smallish router world. So I mostly agree with Dave about
> proportions, however this is the IETF where YANG modules are created.
> (Maybe I should go join the W3C world and work on attestations APIs for
> browsers after RATS is done).
> >
>
> If EAT is the common format for "token", then it does not make sense
> to me to define a YANG version of it. It may make sense to carry EAT
> token over protocols such as NETCONF or RESTCONF and to have a YANG
> module defining this may make sense for the networking device world.
> This is then a definition of an interaction protocol, but not the
> token format itself.
>
> If EAT is the common format for "token", then it may make sense to be
> able to include "claims" that are YANG defined data. That may be an
> extension of the core EAT definition (but EAT would have to allow for
> such an extension to work). There is a lot of formally defined data in
> YANG modules that would be convenient to reuse as claims in a
> networking world.
>
> /js
>
> --
> Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
> Fax:   +49 421 200 3103         <https://www.jacobs-university.de/>
>
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-- 

Best regards,
Kathleen