A quick reference guide for identity, cybersecurity, AI and cryptography
Europe has introduced a wave of new digital regulations covering cybersecurity, artificial intelligence, digital identity, operational resilience, and data governance. Individually they can feel fragmented; together they form a regulatory architecture for digital trust. This resource maps the EU’s major technology regulations onto the TQS Trust Stack to make the landscape clearer for readers working across identity, security, AI, and cryptography.
Readers and podcast listeners of The Quantum Space frequently ask the same question: How do all the new European regulations actually fit together?
Over the past few years the EU has introduced a wave of legislation covering cybersecurity, artificial intelligence, digital identity, operational resilience, and data governance. Each regulation addresses a specific problem, but taken together they form something larger: a regulatory architecture for digital trust.
Within TQS we often describe this architecture using the concept of the Trust Stack — a layered model that explains how modern digital systems establish and maintain trust.
Because several readers asked for a clearer overview, we’ve mapped the key EU regulations to the five layers of the Trust Stack: Ownership, Responsibility, Control, Participation, and Time.
Think of it as a practical guide to how Europe is quietly building the operating system of digital trust.
The Trust Stack
Ownership: Technology, infrastructure, and data sovereignty
The foundation of the Trust Stack is ownership: who controls the hardware, software, platforms, and data infrastructure that underpin digital systems. Several recent EU initiatives focus on strengthening Europe’s technological sovereignty while imposing security obligations on digital products.
Key regulations
Cyber Resilience Act (CRA)
Establishes mandatory cybersecurity requirements for connected hardware and software products sold in the EU. Manufacturers must design products with security in mind and maintain vulnerability management throughout their lifecycle.
EU Chips Act
A strategic initiative aimed at strengthening Europe’s semiconductor ecosystem and reducing dependency on foreign manufacturing.
Data Act
Defines how data generated by connected devices and industrial systems can be accessed and shared, reshaping the economics of data ownership in the EU.
Why it matters
Ownership determines who ultimately controls the digital infrastructure layer. Without control of hardware, platforms, and data flows, digital sovereignty is largely theoretical.
Responsibility: Cybersecurity and operational resilience
The second layer of the Trust Stack deals with accountability: who is responsible when digital infrastructure fails or is compromised. Recent EU regulation has moved cybersecurity from an operational concern to a matter of executive and organisational liability.
Key regulations
NIS2 Directive
Expands cybersecurity obligations across a wide range of sectors including energy, transport, healthcare, digital infrastructure, and cloud services. Organisations must implement risk management measures and report significant incidents.
Digital Operational Resilience Act (DORA)
Applies specifically to the financial sector and its technology suppliers. DORA requires financial institutions to implement robust ICT risk management frameworks, conduct resilience testing, and manage third-party technology dependencies.
Why it matters
Cybersecurity is no longer simply an IT function. Under NIS2 and DORA, it becomes a board-level responsibility with direct legal consequences.
Control: Artificial intelligence and automated decision-making
As software increasingly makes decisions that affect individuals, organisations, and markets, regulation has begun to address the governance of algorithmic systems. This is the focus of the control layer within the Trust Stack.
Key regulations
AI Act
The EU’s risk-based regulatory framework for artificial intelligence. Systems are classified according to risk categories ranging from minimal to unacceptable, with strict obligations applied to high-risk systems.
General Data Protection Regulation (GDPR)
While primarily a data protection law, GDPR also includes provisions governing automated decision-making and algorithmic profiling.
Why it matters
The AI Act establishes a regulatory framework for machine authority — defining when automated systems can make decisions and what oversight must exist.
Participation: Digital identity and access to digital services
Digital systems require reliable ways for individuals and organisations to prove who they are. This is the participation layer of the Trust Stack. Europe’s digital identity framework is evolving rapidly to support cross-border digital services.
Key regulations
eIDAS 2.0 Regulation
Updates the EU’s trust services framework and introduces the European Digital Identity Wallet (EUDI Wallet), allowing citizens and businesses to store and present verified digital credentials.
EU Anti-Money Laundering (AML) Framework
Establishes identity verification requirements for financial institutions and digital service providers.
Why it matters
Identity infrastructure determines who can access digital services and participate in digital markets.
Without trusted identity, large-scale digital ecosystems cannot function.
Time: Cryptography and long-term trust
The final layer of the Trust Stack addresses a critical but often overlooked question: How long does digital trust last? Cryptography provides the mechanisms that allow digital transactions, identities, and documents to remain verifiable over time.
Key frameworks and standards
eIDAS Trust Services
Defines qualified electronic signatures, seals, and timestamping services used across Europe.
ETSI cryptographic standards
Provide the technical frameworks that underpin European trust services infrastructure.
Post-quantum cryptography initiatives
Emerging standards designed to ensure cryptographic systems remain secure against future quantum computing threats.
Why it matters
Cryptography determines the lifespan of digital trust. It ensures that a signature, identity credential, or transaction can still be verified years or decades later.
The Bigger Picture
Taken together, these regulations form a layered regulatory architecture for digital trust.
| Trust Stack Layer | Focus | Key Regulations |
|---|---|---|
| Ownership | Infrastructure and technology | CRA, Chips Act, Data Act |
| Responsibility | Cybersecurity | NIS2, DORA |
| Control | AI governance | AI Act, GDPR |
| Participation | Digital identity | eIDAS 2.0, AML |
| Time | Cryptography | eIDAS Trust Services, ETSI, PQC |
Europe is not simply regulating individual technologies. It is gradually constructing a framework that governs how digital systems establish trust — from hardware infrastructure and cybersecurity to artificial intelligence and identity.
For companies operating in identity, security, cryptography, and trust infrastructure, these frameworks are becoming the regulatory foundation of the European digital economy.
TQS Resource Note
We created this reference guide after multiple readers and podcast listeners asked for a clearer way to understand how the EU’s expanding regulatory landscape fits together. Expect this framework to evolve as additional regulations — including those related to digital wallets, AI governance, and quantum-safe cryptography — continue to shape the future European trust infrastructure.
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