On Dec 17, 2021, at 1:46 PM, Michael Richardson <[email protected]> wrote:
>
> Laurence Lundblade <[email protected]> wrote:
>> So the question is: where should the CDDL for a CWT go? Here’s the main
>> options I can think of:
>> - EAT
>> - UCCS
>> - CWTbis (a revision of CWT to include CDDL)
>> - Some other new standard
>> - no where, never create it
>
> I'd say that it should go into RFC8152bis.
Seems it would be as odd going into COSE as it would EAT.
It would create a circular dependency between CWT and COSE. COSE payloads can
be lots of different things. We don’t want to collect the CDDL for various the
COSE payloads in COSE. The separation between COSE and its payloads is very
clean right now.
What should go into COSE is modifications to the COSE CDDL that defines a
template by which the type of the payload can be specified (that template would
use a .cbor control; see it done in the replicated COSE CDDL in CoSWID section
7 and 8), but that is not what this thread is about.
Below is the CDDL that this thread is about.
If the below CDDL went into its own document, it would be short. Below is the
bulk of the document.
What WG and what charter? It needs to be standards track.
LL
; This is the fundamental definition of a Claims-Set for both CBOR
; and JSON. It is a set of label-value pairs each of which is a
; claim.
;
; In CBOR the labels can be integers or strings with a strong
; preference for integers. For JSON, the labels are always strings.
;
; The values can be anything, with some consideration for types that
; can work in both CBOR and JSON.
Claims-Set = {
* $$claims-set-claims,
* Claim-Label .feature "extended-label" => any
}
Claim-Label = int / text
string-or-uri = tstr
time-int = #6.1(int)
; This is CDDL for the 7 individual claims that are defined in CWT
; and JWT. This CDDL works for either CBOR format CWT or JSON format
; JWT.
$$claims-set-claims //= (iss-label => string-or-uri)
$$claims-set-claims //= (sub-label => string-or-uri)
$$claims-set-claims //= (aud-label => string-or-uri)
$$claims-set-claims //= (exp-label => ~time)
$$claims-set-claims //= (nbf-label => ~time)
$$claims-set-claims //= (iat-label => ~time)
$$claims-set-claims //= (cti-label => bytes)
iss-label = 1
sub-label = 2
aud-label = 3
exp-label = 4
nbf-label = 5
iat-label = 6
cti-label = 7
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