SD-JWT VC rendering metadata

[samuelmr]

SD-JWT VC 8.1. Rendering Metadata defines 2 methods: simple and svg_templates.

In the ethos of DIIP for making things as simple as possible, I believe that we should require conformant implementations to only support the simple method.

If the wallet providers are already implementing the svg_templates rendering method, I'm not objecting to requiring support for them.

[nklomp]

Although we do not support it yet, we are seeing more and more requests for this, so might make sense to include it. Should not be too big of a deal in terms of complexity if you ask me.

Although of course you can have claims in the image, that is just simple replacement of variables

[muisit]

I think this is a matter of MUST support simple, MAY support svg.

We see several use cases for the svg rendering. Our main case is issuing a similar identifier credential from different issuers. The credential type and format is the same, but the issuers want to have their specific branding on the final credential. This cannot be resolved with vct's (as the type, and as such the vct, is the same). For VCDM there is a workaround using the credential metadata more or less.