AP2API Sovereign Trust Core

AP2API delivers deep architectural specifications for sovereign digital identity, EUDI Wallet Architecture & Reference Framework (ARF), Qualified Trust Service Providers (QTSP), and Zero-Knowledge selective disclosure.

AP2API System Architecture

Sovereign Trust Core: AP2 Trust Protocol API Gateway — OpenID4VCI & OpenID4VP High-Throughput REST/gRPC Identity Pipeline

Subsystems & Cryptographic Modules

OpenID4VCI Credential Issuance Endpoint
OpenID4VP Verifier Presentation Pipeline
Mutual TLS (mTLS) RFC 8705 Gateway
OAuth 2.0 Rich Authorization Requests (RAR)
Distributed Rate Limiter & Token Introspector

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 AP2API

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 AP2API, 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, AP2API guarantees cross-border legal finality, strict user data minimization, and uncompromised privacy protection.

Core Trust Engineering Areas

OpenID4VCI Protocol Implementation: High-Throughput Credential Issuance Pipelines — Architectural specifications for credential endpoints, token bindings, pre-authorized code flows, and DPoP (RFC 9449) proof-of-possession tokens.
OpenID4VP Presentation Protocols: Real-Time Cross-Border Identity Verification — Implementing direct post presentation responses, DCQL query language parsing, and mdoc/SD-JWT multi-format presentation validation.
Zero-Trust API Gateway Architecture with mTLS and eIDAS Certificate Validation — Binding client X.509 qualified website authentication certificates (QWAC) to API sessions with sub-millisecond OCSP stapling verification.

Technical Whitepapers & Regulatory Specifications

Related Cluster Architecture Specifications

EIDASTrust — eIDAS 2.0 European Digital Identity Framework, Sovereign Trust Services & EUDI Architecture
AP2Cert — AP2 Compliance Certification, Qualified Trust Attestation & ETSI EN 319 Auditing
AP2Cluster — High-Availability AP2 Identity Clusters, Distributed HSMs & Scalable Trust Nodes
AP2Ops — Identity Operations, Zero-Trust Access Lifecycle & Continuous Trust Telemetry