openid / openid/OpenID4VP

Support `did` as trusted authorities for DCQL

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#494 3 comments 0 reactions 0 assignees View on GitHub

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Description

Based on a comment I initially added to #479:

One issue i see for w3c VCs is that issuer based matching with DCQl can become quite complex, as you don't know whether to query ['issuer'] or ['issuer', 'id'].

So if you would use claim sets, you'd have to duplicate all claim sets. I know the WG decided against adding did as a trusted authority mechanism, but it would make issuer matching a lot easier IMO.

A similar limitation is there for AnonCreds credentials, as there is not really an issuer_did property to query on.

I think adding support for DIDs to trusted authorities would make querying for DID based issuers a lot easier across credential formats that support DIDs.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked context in #479 and review the DCQL trusted-authority discussion. Trace how issuer matching is represented for W3C VCs and AnonCreds, then define the semantics needed for DID-based trusted authorities. Done means the behavior is specified consistently across credential formats without requiring duplicated claim sets.

Written by the indexing model from the issue text.

Assessment

Domain
authentication, security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
38/100

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