Re: VC formats

Thanks for stating it clearly. This is why the statement "VCDM lacks
selective disclosure" trips the brain wires. It belongs at the
signature/proof level. And of course, selective disclosure can be performed
in different ways. Just wondering if I missed the boat on any
considerations that make the credential data model itself more or less
conducive to selective disclosure, which that statement appears to say.

Or maybe it refers to a specific brand of selective disclosure, and not
selective disclosure in the general sense.

Does SD-JWT-VC imply a landscape in which there will be a different VC
format for each signature suite? This is very different from my mental
model of VC data model, with the possibility of using different signature
suites. I'd be eager to learn more about the advantages of that.

On Tue, Mar 19, 2024 at 5:10 PM Orie Steele <orie@transmute.industries>
wrote:

> Selective disclosure is a property of the securing format, not the data
> model.
>
> Sd-jwt and ecdsa-sd both support selective disclosure, but with very
> different performance and security trade offs.
>
> It's not correct to say that CBOR, YAML, JSON, XML or JSON-LD support
> selective disclosure.
>
> It is correct to say SD-JWT, SD-CWT, mDoc, goridan envelopes or ecdsa-sd
> support selective disclosure.
>
> It seems jades as a requirement precludes the use of CBOR or Data
> Integrity Proofs, or even JWT, given JWTs are always compact (no JSON
> Serialization).
>
> OS
>
> On Wed, Mar 20, 2024, 9:53 AM Kim Hamilton <kimdhamilton@gmail.com> wrote:
>
>> Hi all,
>> I'm trying to get my head around the variety of VC formats. I ran across
>> this deck and I'm curious why it would say VCDM lacks selective disclosure
>> (included screenshot and deck). It does via signature suites, so in a sense
>> the statement "does not compute".
>>
>> Eager to learn about the new VC formats, similarities and differences.
>>
>> Thanks,
>> Kim
>> [image: Screenshot 2024-03-19 at 4.36.16 PM.png]
>>
>