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Architecture Overview

EUDIPLO is a lightweight middleware designed to bridge the gap between existing systems and the emerging ecosystem of EUDI Wallets. Instead of implementing complex protocols such as OpenID4VP, SD-JWT, or DIDComm themselves, developers can run EUDIPLO as a standalone Docker container and interact with it via simple APIs or configuration files.

It acts as an adapter between trusted infrastructure and local applications or web services.

Purpose

The EUDI Wallet ecosystem introduces new technical standards and trust models that are non-trivial to implement correctly. EUDIPLO handles these standards for you, allowing existing systems to:

  • Issue verifiable credentials
  • Verify presentations
  • Manage cryptographic keys securely
  • Persist session data
  • Run in a self-contained Docker deployment

Deployment

EUDIPLO is shipped as a Docker image. It can be run with minimal setup via a .env file. You can mount:

  • a config/ directory for SQLite data or credential configuration
  • optional integration with Vault for key storage

EUDIPLO can be deployed as:

  • a standalone local service (e.g., during development)
  • a backend service in production (e.g., behind a gateway)

Integration Patterns

You can use EUDIPLO as:

  • An internal credential issuance service for your citizen portal, education platform, or company registry
  • A verifier bridge to validate wallets without deeply integrating OpenID4VP etc.
  • A testing sandbox for experimenting with EUDI protocols

Extensibility

EUDIPLO is modular and extensible:

  • Add new key management backends (e.g., AWS KMS)
  • Customize issuance templates
  • Extend the API layer with business-specific endpoints