AP2Spec Sovereign Trust Core

AP2Spec delivers deep architectural specifications for sovereign digital identity, EUDI Wallet Architecture & Reference Framework (ARF), Qualified Trust Service Providers (QTSP), and Zero-Knowledge selective disclosure.

AP2Spec System Architecture

Sovereign Trust Core: AP2 Technical Specification Framework — Cryptographic Schema Formal Verification, W3C Verifiable Credential Profiles & RFCs

Subsystems & Cryptographic Modules

Formal Protocol Verification Engine (ProVerif / Tamarin)
W3C VC Data Model 2.0 Schema Validator
ISO/IEC 18013-5 mdoc Data Structure Parser
IETF SD-JWT-VC Specification Compliance Linter
Cryptographic Algorithm Agility Manager

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 AP2Spec

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 AP2Spec, 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, AP2Spec guarantees cross-border legal finality, strict user data minimization, and uncompromised privacy protection.

Core Trust Engineering Areas

Formal Verification of eIDAS 2.0 Protocols using ProVerif and Tamarin — Mathematical proofs of authentication, secrecy, unlinkability, and forward secrecy across EUDI Wallet issuance and presentation exchanges.
W3C Verifiable Credentials 2.0 vs ISO/IEC 18013-5 mdoc: Architectural Harmonization — Data structure mapping, CBOR/JSON serialization trade-offs, and unified cryptographic verification for mobile driving licenses and national IDs.
Cryptographic Agility in Trust Specifications: Transitioning to Post-Quantum Schemes — Designing protocol headers, cipher suite negotiation, and hybrid certificate profiles capable of swapping ECDSA for ML-DSA without breaking legacy verifiers.

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