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Module Presentation Exchange

The eudi-lib-jvm-presentation-exchange-kt is a kotlin library that implements the functionality as described in Presentation Exchange v2.

This is a specification that defines:

  • A way for the Verifier to describe proof requirements in terms of PresentationDefintion object
  • A way for the Holder to describe submissions of proofs that align with those requirements in terms of a PresentationSubmission

The use of this specification is mandatory by OpenID4VP

eu.europa.ec.eudi.prex

The library offers the following functionality:

  • As a Verifier be able to

    • produce a valid PresentationDefinition in order to be communicated to a Holder using a protocol like OpenID4VP
    • decide whether a given PresentationSubmission satisfies a specific PresentationDefinition

  • As a Holder/Wallet be able to

    • parse/validate a PresentationDefition
    • to check if a claim stored in the wallet satisfies a PresentationDefinition
    • to produce a PresentationSubmission given a valid PresentationDefintion and a matching Claim

Presentation Exchange optional features supported

The table bellow summarizes the set of optional features defined by Presentation Exchange v2 which are supported by the library. Currently, no optional features are being supported, except retention

Feature Status
Submission requirement ❌
Predicate ❌
Relational constraint ❌
Credential status constraint ❌
JSON-LD framing ❌
Retention ✅