AP2Trust Sovereign Trust Core

AP2Trust delivers deep architectural specifications for sovereign digital identity, EUDI Wallet Architecture & Reference Framework (ARF), Qualified Trust Service Providers (QTSP), and Zero-Knowledge selective disclosure.

AP2Trust System Architecture

Sovereign Trust Core: Cross-Border AP2 Trust Mesh — Mutual TLS Peer Authentication, Dynamic Trust Chaining & Multi-Jurisdictional Verification

Subsystems & Cryptographic Modules

Cross-Border Dynamic Trust Chain Resolutor
Decentralized Identifier (DID) Document Resolver
Mutual TLS (mTLS) Authentication Proxy
Multi-Jurisdictional Regulatory Policy Engine
Cryptographic Proof-of-Association Verifier

Architectural Layers & Ingress Bus

Layer 1: Hardware Cryptographic Enclave & Keystore (Common Criteria EAL6+ / eSE / TEE / FIPS 140-3 Level 4 / Hardware Root-of-Trust): Hardware key generation, tamper-resistant memory storage, and device-bound biometric attestation satisfying LoA High requirements.
Layer 2: Protocol Engine & Selective Disclosure (OpenID4VCI / OpenID4VP / SD-JWT-VC / BBS+ Pairing Cryptography / W3C VC 2.0): Manages high-throughput credential issuance, presentation exchange, and zero-knowledge selective attribute disclosure.
Layer 3: Qualified Trust Services & Legal Finality (ETSI EN 319 401/411/412 / QES / QSeal / Remote QSCD / RFC 3161 Time-Stamps): Provides legally binding electronic signatures and seals with cross-border mutual recognition under eIDAS Article 25.
Layer 4: Sovereign Trust Framework & Cross-Border Audit (EUTL / LOTL XMLDSig / StatusList2021 / ASiC-E Containers / Audit Logging): Dynamic supervisory trust chain validation, sub-millisecond revocation lookups, and tamper-evident forensic compliance.

Security Metrics & Latency Benchmarks: < 6.8 ms (Verification Latency) | CC EAL6+ (Hardware Enclave Level) | 14,500/s (Throughput Capacity) | Article 25 (Legal Admissibility)

European Digital Identity Framework & Cryptographic Trust Architecture in AP2Trust

The European Digital Identity Framework established under Regulation (EU) 2024/1183 (eIDAS 2.0) fundamentally restructures how citizens, businesses, and public administrations interact across national borders. Within AP2Trust, we formalize the cryptographic protocols, hardware security enclave boundaries, and decentralized attribute exchange flows required to deploy sovereign digital trust at scale. By unifying the EUDI Wallet Architecture and Reference Framework (ARF), Qualified Trust Service Providers (QTSP), and advanced zero-knowledge selective disclosure primitives, AP2Trust guarantees cross-border legal finality, strict user data minimization, and uncompromised privacy protection.

Core Trust Engineering Areas

Cross-Border Dynamic Trust Chain Resolution via European Union Trusted Lists — Parsing XML LOTL (List of Trusted Lists), cryptographic signature verification of national supervisory bodies, and local trust cache synchronization.
Decentralized Identifiers (DIDs) in Federated Sovereign Trust Registries — Resolving did:jwk, did:web, and did:cheqd identifiers within regulated trust frameworks while maintaining regulatory compliance.
Multi-Jurisdictional Policy Enforcement in Automated Credential Verification — Evaluating jurisdiction-specific disclosure requirements, age-verification legal thresholds, and professional attribute validity rules.

Technical Whitepapers & Regulatory Specifications

Related Cluster Architecture Specifications

EIDASTrust — eIDAS 2.0 European Digital Identity Framework, Sovereign Trust Services & EUDI Architecture
AP2API — AP2 Trust Protocols, Decentralized Authentication APIs & Cross-Border Identity Interop
AP2Cert — AP2 Compliance Certification, Qualified Trust Attestation & ETSI EN 319 Auditing
AP2Cluster — High-Availability AP2 Identity Clusters, Distributed HSMs & Scalable Trust Nodes