Glossary

eIDAS

An EU regulation establishing a framework for electronic identification and trust services for electronic transactions, providing a legal basis for cross-border digital identity.

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ELECTRONIC IDENTIFICATION, AUTHENTICATION AND TRUST SERVICES

What is eIDAS?

eIDAS is the EU regulation that establishes a legal framework for electronic identification and trust services, enabling secure cross-border digital transactions.

eIDAS (electronic IDentification, Authentication and trust Services) is EU Regulation No 910/2014, which creates a predictable legal framework for electronic signatures, seals, time stamps, and website authentication across all member states. It mandates mutual recognition of national electronic identification (eID) schemes, ensuring a digital identity issued in one EU country is legally valid in another.

The regulation defines three levels of assurance—low, substantial, and high—for electronic identification means. It also establishes qualified trust services that carry the highest legal weight, equivalent to handwritten signatures. The updated eIDAS 2.0 framework introduces a European Digital Identity Wallet, enabling citizens to securely store and share identity attributes and credentials from a single, sovereign-controlled application.

eIDAS COMPLIANCE

Frequently Asked Questions

Clear answers to the most common questions about the EU's electronic identification and trust services regulation, its technical mechanisms, and its impact on cross-border digital transactions.

eIDAS (electronic IDentification, Authentication and trust Services) is an EU regulation (No 910/2014) that establishes a legal framework for electronic identification and trust services across all EU member states. It works by creating a mutual recognition mechanism: an electronic identification scheme notified by one member state must be recognized by all others for accessing public services. The regulation defines three assurance levels—low, substantial, and high—that map to the rigor of the identity proofing process. For trust services, eIDAS sets common rules for electronic signatures, seals, timestamps, registered delivery, and website authentication certificates, ensuring they carry the same legal weight across borders as their paper-based equivalents. The 2024 update, eIDAS 2.0, introduces the European Digital Identity Wallet, a mobile application allowing citizens to store and selectively share verified identity attributes and credentials.

REGULATORY FRAMEWORK

Core Components of eIDAS

The eIDAS regulation establishes a predictable legal framework for electronic identification and trust services, enabling secure cross-border digital transactions within the European Union.

Electronic Identification (eID)

A digital identity issued by a notified EU member state that allows citizens and businesses to authenticate securely across borders. eIDAS mandates mutual recognition of eID schemes once they are notified to the European Commission.

Assurance Levels: Defined as low, substantial, and high, corresponding to the degree of confidence in the claimed identity.
Cross-Border Access: A German citizen can use their national eID to access public services in France without re-registration.
Notification Process: Member states must peer-review each other's schemes before mandatory cross-border recognition takes effect.

Qualified Trust Services

A set of regulated digital services that carry the highest legal presumption of integrity and authenticity under EU law. These services are provided by Qualified Trust Service Providers (QTSPs) who undergo rigorous conformity audits.

Qualified Electronic Signatures (QES): Legally equivalent to a handwritten signature across all member states.
Qualified Electronic Seals: Guarantee the origin and integrity of a document from a legal entity, not an individual.
Qualified Timestamps: Provide irrefutable proof that a specific data object existed at a precise moment in time.
Qualified Website Authentication Certificates (QWACs): Ensure the entity behind a website is legally verified, preventing impersonation.

Electronic Registered Delivery Service (ERDS)

A service that transmits data between third parties by electronic means and provides evidence relating to the handling of the transmitted data, including proof of sending and receipt. It protects against the risk of loss, theft, damage, or unauthorized alterations.

Legal Presumption: A qualified ERDS enjoys a presumption of the integrity of the data, the sending by the identified sender, and the receipt by the identified addressee.
Chain of Evidence: Provides a complete, legally admissible audit trail of the entire transmission lifecycle.
Non-Repudiation: Prevents the sender from denying they sent the message and the recipient from denying they received it.

The eIDAS Digital Wallet (EUDI)

The revised eIDAS 2.0 regulation introduces the European Digital Identity (EUDI) Wallet, a mandatory, citizen-controlled mobile application for storing and sharing identity attributes and credentials.

Privacy by Design: Built on a decentralized architecture that prevents the issuing authority from tracking where a citizen uses their credentials.
Selective Disclosure: Users can share only specific attributes (e.g., 'over 18') without revealing their full identity or birth date.
Mandatory Acceptance: All very large online platforms and public services will be legally required to accept the EUDI Wallet for authentication.

Qualified Electronic Attestation of Attributes

A new trust service under eIDAS 2.0 that allows a qualified provider to issue a legally recognized digital proof of a specific attribute, such as a professional license, academic diploma, or driving entitlement.

Machine-Readable Credentials: Attributes are issued in a verifiable, cryptographically signed format that can be processed automatically by relying parties.
Zero-Knowledge Proofs: Enables the holder to prove a statement about an attribute (e.g., 'holds a valid medical license') without revealing the underlying raw data.
Cross-Sector Use: A single attestation can be used for banking KYC, professional registration, and government service access.

Liability and Supervision Framework

eIDAS establishes a clear liability regime for trust service providers and a national supervisory structure to ensure compliance and consumer protection.

QTSP Liability: Qualified providers are strictly liable for intentional or negligent damages caused by a failure to comply with their obligations.
Supervisory Bodies: Each member state designates a public body responsible for the ex-ante authorization and ongoing supervision of QTSPs.
EU Trusted List: A mandatory, machine-processable public ledger maintained by each member state listing all qualified trust services and their current accreditation status.

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CROSS-BORDER TRUST FRAMEWORK

How eIDAS Enables Sovereign Digital Identity

eIDAS provides the legal and technical foundation for mutual recognition of electronic identities across EU member states, enabling sovereign digital interactions without centralized foreign control.

eIDAS (Electronic Identification, Authentication and Trust Services) is an EU regulation establishing a cross-border legal framework for electronic identification and trust services, ensuring that a digital identity issued in one member state is legally recognized in another. It creates a predictable regulatory environment for secure electronic transactions between businesses, citizens, and public authorities.

The regulation defines qualified trust services, including electronic signatures, seals, timestamps, and website authentication certificates, which carry the same legal weight as their paper-based equivalents. By mandating mutual recognition of notified eID schemes, eIDAS eliminates jurisdictional fragmentation and enables sovereign, interoperable digital identity without reliance on non-EU identity providers.

About the author

Prasad Kumkar

CEO & MD, Inference Systems

Prasad Kumkar is the CEO & MD of Inference Systems and writes about AI systems architecture, LLM infrastructure, model serving, evaluation, and production deployment. Over 5+ years, he has worked across computer vision models, L5 autonomous vehicle systems, and LLM research, with a focus on taking complex AI ideas into real-world engineering systems.

His work and writing cover AI systems, large language models, AI agents, multimodal systems, autonomous systems, inference optimization, RAG, evaluation, and production AI engineering.

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eIDAS

What is eIDAS?

Frequently Asked Questions