eudi-lib-jvm-openid4vci-kt is a Kotlin library, targeting JVM, that supports the OpenId4VCI (draft 12) protocol.
In particular, the library focuses on the wallet's role in the protocol to:
- Resolve credential issuer metadata
- Resolve metadata of the authorization server protecting issuance services
- Resolve a credential offer presented by an issuer service
- Negotiate authorization of a credential issuance request
- Submit a credential issuance request
Specification defines that a credential's issuance can be requested using authorization_details parameter when using authorization code flow.
Current version of the library does not support that. It only supports requesting issuance using scope parameter in the authorization endpoint.
Specification defines that upon a successful token response authorization_details is included in response,
if authorization_details parameter is used in authorization endpoint. Current version of library is not parsing/utilizing this response attribute.
Current version of the library implements integrations with issuer's Crednetial Endpoint, Batch Crednetial Endpoint and Deferred Crednetial Endpoint endpoints.
NOTE: Attribute credential_identifier of a credential request (single or batch) is not yet supported.
OpenId4VCI specification defines several extension points to accommodate the differences across Credential formats. The current version of the library fully supports ISO mDL profile and gives some initial support for IETF SD-JWT VC profile.
OpenId4VCI specification (draft 12) defines two types of proofs that can be included in a credential issuance request, JWT proof type and CWT proof type. Current version of the library supports only JWT proof types