> On Nov 4, 2023, at 8:03 PM, Carsten Bormann <[email protected]> wrote:
> 
> On Oct 27, 2023, at 20:57, lgl island-resort.com <[email protected]> 
> wrote:
>> 
>> It seems like this is in hand, but FYI, in EAT, we want to use ccs to bring 
>> the “eat_profile” claim up from the CWT Claims-Set to the top level so that 
>> dispatch of the EAT processing can be done before processing COSE. It is 
>> possible that COSE is providing encryption making it a lot of work to access 
>> the “eat_profile" claim.  The “eat_profile" is kind of a sub-type mechanism 
>> in EAT.
> 
> This is an interesting example.
> 
> It seems more obvious to me to just extract that one claim and define a 
> parameter, with well-defined semantics!, for just that.

I mentioned these in another thread/message:

- OEMID claim also to dispatch to OEM-specific attestation processors

- When the EAT is encrypted, any other claim you want in the clear for 
processing before decryption

- In general dispatch, pre-processing and early error checks before full CWT 
processing, particularly for encrypted CWTs

Because the claims that are candidate for all this may not be known all at 
once, it’s nice to have the general facility for any claim, rather than having 
to define each COSE parameter.

LL
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