Platform Architecture

A modular security platform delivering verifiable cryptographic services for high-assurance environments

Architecture Overview

Layered Security Model

The Quantum Secure Gateway uses a layered security model with clear separation of concerns between infrastructure, services, and client interfaces.

  • Layer 0 (Core): Policy engine, trust root
  • Layer 1 (Verifier): Validation and audit
  • Layer 2 (Crypto): PQC layer, key exchange
  • Layer 3 (Client): External interfaces

Key Design Principles

  • Defense in Depth: Multiple security layers with independent verification
  • Audit-Ready: Complete evidence chains for compliance
  • Crypto-Agility: Post-quantum ready architecture
  • Verifiable Delivery: Manifest-based evidence

Entropy Service

Secure entropy services for controlled, high-trust environments with verifiable service flows and audit-ready delivery controls. Hardware-derived entropy with cryptographic conditioning.

High-Assurance Randomness Controlled Access Audit Trails Provenance Metadata

Vault Service

Protected storage with authenticated encryption, key management, and structured recovery mechanisms for enterprise-grade security. Structure-bound storage with integrity controls.

AES-256-GCM Key Wrapping Recovery Integrity Controls

Gateway Layer

Protected gateway services with audit-ready delivery controls, manifest-based evidence, and secure transfer capabilities. Rate limiting, authentication, and request validation.

Manifest Auth Audit Trails Secure Transfer Rate Limiting

Topology Guard

Graph-based security architecture with structure validation, drift detection, and policy enforcement. Ensures integrity of the overall system topology and detects anomalies.

Structure Validation Drift Detection Policy Enforcement Anomaly Detection

Security Model

Authentication

  • Bearer token authentication for all endpoints
  • API keys issued after access request approval
  • Rate limiting per API key
  • Request signing for enterprise tier

Auditability

  • Complete request logging with request IDs
  • Provenance metadata in every response
  • Evidence artifacts for compliance
  • Manifest-based delivery verification

Entropy Sources

Hardware Sources

Primary entropy from IBM Quantum systems with cryptographic conditioning via HKDF-SHA3-256.

Provenance: tmt-os-gold-standard, casablanca-validated

Pool Management

Multiple entropy pools (primary, backup, private) with rotation policies and health monitoring.

Independent validation and depletion tracking

CSPRNG Fallback

Automatic fallback to cryptographically secure PRNG when hardware pools are depleted.

Transparent fallback with provenance metadata

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