European Digital Identity Wallet

EUDIW is part of the eIDAS 2.0 regulation of the European Commission. The regulation lays out several rules and regulation on how wallets should be used and how member states should deploy them. Also sevral trules lay out the mandatory requirement for member states to make certain data (specfifcally the PID) available for their citizens, and to accept wallets from other countries. Even though all these regulations are high level and typically non technical, the impact of the regulations is very much impactful on the technical layer, as it mandates pan European interoperability and scalable, multi party trust, as wall as significant scalability.

The eIDAS regulation delegtes the technical and architectuaral layer to the eIDAS working group, who have written down their , the Architecture Refrence Framework

• The EUDI and ARF include several open and less open standards, all with their own governance:
  
  • World Wide Web Consortium (W3C)
  • Internet Engineering Task Force (IETF)
    • SD-JWT-VC
    •  OAuth 2.0 Attestation-Based Client Authentication

    • IETF PAR (RFC9126)

    • IETF DPoP (RFC9449)

  • International Organization for Standardization (ISO)
  • OpenID Foundation
    • OpenID for Identity Assurance 1.0
    • OpenID Federation 1.0
    • OpenID for Verifiable Credential Issuance
    • OpenID for Verifiable Presentations
    • OpenID for Verifiable Credential HAIP
  • Decentralized Identity Foundation (DIF)
• On top of this, EU is regulating 
  
  • eIDAS 2.0 (European Commission)
• Sectoral: eduGAIN