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

Dave Thaler <dthaler@microsoft.com> Wed, 13 November 2019 00:22 UTC

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From: Dave Thaler <dthaler@microsoft.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>, Laurence Lundblade <lgl@island-resort.com>
CC: "rats@ietf.org" <rats@ietf.org>
Thread-Topic: [Rats] Call for adoption (after draft rename) for Yang module draft
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Date: Wed, 13 Nov 2019 00:22:49 +0000
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Subject: Re: [Rats] Call for adoption (after draft rename) for Yang module draft
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Thanks Michael, I realize I may have had some confusion on YANG terminology (in my first response to Ned) as well in retrospect. 
Your explanation is great for understanding.

Thanks,
Dave

-----Original Message-----
From: RATS <rats-bounces@ietf.org> On Behalf Of Michael Richardson
Sent: Tuesday, November 12, 2019 12:23 AM
To: Laurence Lundblade <lgl@island-resort.com>
Cc: rats@ietf.org
Subject: Re: [Rats] Call for adoption (after draft rename) for Yang module draft

On 2019-11-12 3:52 a.m., Laurence Lundblade wrote:
> One more note on this. It seems wrong-headed to try express claims in 
> YANG. To do that we’d need to invent a YANG signing standard (YOSE?).
> Seems like YANG should be thought of as RPC / conveyance / transport 
> here, not as a way to format a signed attestation token.

YANG is an information model (think ASN.1). It is for humans and for code generators, protocol inspectors, etc, it is never bits on the wire.
It needs to be expressed somehow (XML, JSON, CBOR), which is akin to BER/DER.
XML, JSON and CBOR all have signature standards (maybe more than one).
A specific claim could well have a complex set of information that it conveys and that could be expressed in YANG, but I find it difficult to imagine such a thing.

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