Knowledge Base

The EUDI Wallet, explained

Explore our technical articles and guides about EUDI Wallet integration, digital identity, and European digital identity standards.

Decision-maker level28 min read

The EUDI Wallet ecosystem, at a decision level

This document explains how the European Digital Identity Wallet ecosystem is put together: what the legal layers are, who the actors are, which credentials and protocols are involved, how trust is established, and what has to be decided before an integration starts.

How to read this documentLegal basis and the three layersThe implementing acts, by subject+10 more

Overview8 min read

EUDI Wallet Overview

Comprehensive guide to the European Digital Identity Wallet - what it is, how it works, and how to integrate it into your business processes.

What is EUDI Wallet?Implementation StatusMain Actors+3 more

Technical Guide12 min read

EUDI Wallet Guide

The connection, structure, and operation of the Hungarian EUDI Wallet implementation and the European Digital Identity Wallet (EUDI Wallet).

IntroductioneIDAS 2.0 and EUDI Wallet RegulationEUDI Wallet Architecture and Reference Framework (ARF)+6 more

Developer Guide15 min read

EUDI Wallet Integration Guide

Detailed developer guide for connecting to the Hungarian EUDI Wallet ecosystem. OpenID4VP, cryptographic verifications, and test environments.

OverviewRegistration and PrerequisitesOpenID4VP Client Implementation+9 more

Developer Guide18-22 min read

OpenID4VP & EUDI Wallet: What's Changing for Relying Parties

Developer guide summarizing the upcoming standard changes affecting Hungarian EUDI Wallet integration. DCQL, wallet metadata, verifier identification, response packaging, schema management, and trust infrastructure updates.

OverviewDCQL replaces Presentation Exchange in EU-grade interoperabilityWallet metadata restructuring+9 more

Decision guide7 min read

OpenID4VP 1.0: what the standard change means for organisations connecting to DÁP

OpenID4VP has reached its final 1.0 version. A business and IT leadership summary of how big the draft 22 → 1.0 migration really is, why it will not be the last change, and how to decide between custom development and an off-the-shelf solution.

What happened, and why is action mandatory?Why is this not a two-day task?This is not expected to be the last change+4 more