openid / openid/OpenID4VCI

Wallet Selection Binding during Issuance

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dc-api
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Description

Building up on the problem described in https://github.com/w3c-fedid/digital-credentials/issues/382.

We had a discussion at IIW, and integration for the following option 3 into VCI seems to be preferred by the DCP WG at the moment:

The Issuer could provide a binding key when making the create call. Here the platform would pass the wallet hmac(binding_key, selected_wallet_identifier)

Implementing Option 3 in VCI will most likely mean the following (https://github.com/w3c-fedid/digital-credentials/issues/382#issuecomment-3434365368):

send platform attestation containing hashed origin at Token/PAR Request
define a claim for origin in wallet attestation
issuer needs to compare origins

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 issue 382 and its referenced comment, then review the VCI Token/PAR request and wallet attestation areas. Determine how Option 3 should cover platform attestation, the origin claim, and issuer origin comparison; the work is done when those requirements are specified and integrated into VCI.

Written by the indexing model from the issue text.

Assessment

Domain
api, authentication, security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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