openid / openid/OpenID4VC-HAIP

Requirements for JWK in key attestation `attested_keys`

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Dominant language
Makefile
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Forks
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Description

The exact fields present in a JWK is a frequent cause of interoperability problems.

We don't currently appear to have an language (in VCI or HAIP) that says whether kid, use, alg are required to be sent, so issuers & wallets are likely to make different assumption.

I'm not fully thought it through but in the general case people seem to like it when kid is present so we might want to at least mandate that in HAIP.

If we're not going to mandate it then it would probably be good to be clear that implementations need to tolerate kid being absent.

Whatever we do decide to say should probably apply to the jwk in the openid4vci-proof+jwt header.

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Research direction

Read the relevant VCI and HAIP language for JWKs in key attestation and the openid4vci-proof+jwt header. Decide whether kid, use, and alg are required, and document how implementations should behave when kid is absent; done means the requirement is stated consistently in both contexts.

Written by the indexing model from the issue text.

Assessment

Domain
documentation, security
Issue type
Documentation
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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