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Re: [Anima] [Rats] cose+cbor vs cwt in MIME types

"Smith, Ned" <ned.smith@intel.com> Thu, 23 March 2023 19:27 UTC

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From: "Smith, Ned" <ned.smith@intel.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>, Thomas Fossati <Thomas.Fossati@arm.com>, Thomas Fossati <tho.ietf@gmail.com>, "cose@ietf.org" <cose@ietf.org>, "rats@ietf.org" <rats@ietf.org>, "anima@ietf.org" <anima@ietf.org>
Thread-Topic: [Rats] cose+cbor vs cwt in MIME types
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Date: Thu, 23 Mar 2023 19:27:15 +0000
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Subject: Re: [Anima] [Rats] cose+cbor vs cwt in MIME types
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Does it belong with the "EAT Media Types" topic, or is it a separate topic?
-Ned

On 3/23/23, 11:44 AM, "RATS on behalf of Michael Richardson" <rats-bounces@ietf.org <mailto:rats-bounces@ietf.org> on behalf of mcr+ietf@sandelman.ca <mailto:mcr+ietf@sandelman.ca>> wrote:




COSE CHAIRS: can we have 5 minutes for this discussion?
I guess I can make two slides tomorrow and get Thomas to co-author them.




Thomas Fossati <Thomas.Fossati@arm.com <mailto:Thomas.Fossati@arm.com>> wrote:
> On 13/03/2023, 18:10, "Thomas Fossati" tho.ietf@gmail.com <mailto:tho.ietf@gmail.com><mailto:tho.ietf@gmail.com <mailto:tho.ietf@gmail.com>> wrote:
>>
>> On Mon, Mar 13, 2023 at 5:49 PM Michael Richardson
>> mcr+ietf@sandelman.ca <mailto:mcr+ietf@sandelman.ca><mailto:mcr+ietf@sandelman.ca <mailto:mcr+ietf@sandelman.ca>> wrote:
>> > Thomas Fossati Thomas.Fossati@arm.com <mailto:Thomas.Fossati@arm.com><mailto:Thomas.Fossati@arm.com <mailto:Thomas.Fossati@arm.com>> wrote:
>> > > I have commented on your respective issue trackers.
>> >
>> > I saw, but I think that this requires some cross-WG discussion and consensus,
>> > and I think that the COSE WG should tell us what to do.
>>
>> Sure, thank you for bringing COSE in the loop.


> I just realised this needed some follow-up from my side.


> What MCR is talking about is the eat-media-type [1] draft we are doing
> in RATS. The document requests registration of the +cwt structured
> syntax suffix (see Section 6.1).


> The idea is to use +cwt to indicate that the media type is encoded as a
> CWT, symmetric to +jwt.


> In our case we'd be using it in composition with application/eat to
> differentiate between the JWT and CWT serialisations of EAT.


> COSE is the natural stakeholders for this, so if you could have a look
> and see if we are doing the right thing it'd be awesome.


And, if ANIMA should also be using +CWT for what is now RFC8366bis
(and used to be in the constrained-voucher document), or if our use of
application/voucher-cose+cbor is wrong.


(DAMN. It's not in rfc8366bis yet. It should be)




--
Michael Richardson <mcr+IETF@sandelman.ca <mailto:mcr+IETF@sandelman.ca>> . o O ( IPv6 IøT consulting )
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