Signature format is missing

[alenhorvat]

VCs have a format, but so do signatures.

I cannot find a category for signature formats.

[cre8]

You mean like JSON Web Signatures?

When defining the profiles we saw no differences them, just the credential format. When we define a profile that is using the VC Data Model, your wallet needs to support all requirements of it like the defined signature formats that can be placed inside a VC Data model. But VC Data Model is not defining the Signature Algorithm (like RSA, ECDSA), it just says "put your public key in a public key format i defined here".

If you have any good example why we should add it, feel free to open the issue again :)

[alenhorvat]

Hi.

Nice example are JWS and JAdES (JSON Advanced Electronic digital Signature) and even CAdES (same as JAdES but can secure any digest).

JWS/JAdES/CAdES have the ability so secure any payload: from JSON, JSON-LD, or any other document (e.g., CAdES as input requires only the digest of the protected content; content type/format can be anything).

In this sense JAdES can secure: VCDM v1.1, v2; JWT-VC, JWT, SD-JWT VC or any other format;

After reading the "Credential Format" again, I see it contains both

• credential format
• signature format Some specifications define both, but some signature formats are more open.

Note: I'm referring to the signature format, not the signing algorithm.