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Section 1 · Excellence

Proposal: PQC Integration for EU Critical Infrastructure Call: HORIZON-CL3-2025-CS-ECCC-06 Section: Part B Section 1 (30% of evaluation score) Page Limit: ~15 pages (subsections 1.1-1.4 combined)


1.1 Objectives

Specific, Measurable Objectives Aligned with Horizon Europe Call CL3-ECCC-06:

Overall Objective

Develop and validate a hybrid post-quantum cryptographic (PQC) transition framework for EU critical infrastructure, achieving TRL 6 through operational pilot deployments across 3 member states (France, Czech Republic, Greece), demonstrating 30% audit cost reduction and 50% faster incident detection while ensuring 100% backward compatibility with existing classical cryptography systems.

Specific Objectives (SO1-SO7)

SO1: Post-Quantum Algorithm Integration (M1-M14)

  • Integrate 3 NIST-standardized PQC algorithms (CRYSTALS-Kyber FIPS 203, CRYSTALS-Dilithium FIPS 204, SPHINCS+ FIPS 205) into VaultMesh receipt engine
  • Achieve 10,000 receipts/day throughput with PQC signing (baseline: 1,000/day classical)
  • Deliverables: D2.1 (Sealer Implementation, M8), D2.2 (Verifier CLI, M11), D2.3 (RFC-3161 TSA Integration, M14)
  • Verification: Benchmark tests showing <5ms signing latency per receipt

SO2: Hybrid Cryptographic Transition (M1-M12)

  • Develop dual signature mode (classical Ed25519 + PQC Dilithium in parallel)
  • Design hybrid key exchange (X25519 + CRYSTALS-Kyber for backward compatibility)
  • Create composite X.509 certificates following draft-ietf-lamps-pq-composite-certs
  • Deliverables: D1.2 (Architecture Specification, M6), D2.1 (Sealer Implementation, M8)
  • Verification: Interoperability tests with legacy systems (100% compatibility target)

SO3: LAWCHAIN Tamper-Evident Audit Spine (M1-M18)

  • Implement Merkle tree compaction for receipt batching (target: 256 manifests, up from 36)
  • Integrate external timestamping via RFC-3161 TSA providers (FreeTSA, DigiStamp, GlobalSign)
  • Deploy blockchain anchoring (Ethereum mainnet + Bitcoin OP_RETURN fallback)
  • Deliverables: D2.3 (TSA Integration, M14), D4.1 (Federation Router, M12)
  • Verification: 99%+ audit trail completeness (baseline: 85%)

SO4: Ψ-Field Anomaly Detection (M4-M16)

  • Develop collective intelligence service for cross-organizational anomaly detection
  • Achieve <10% false positive rate and >80% true positive rate via tunable thresholds
  • Deploy human-in-the-loop review dashboard for high-risk alerts
  • Deliverables: D3.1 (Ψ-Field Service v1.0, M10), D3.2 (Observability Dashboard, M14), D3.3 (Anomaly Detection Module, M16)
  • Verification: Pilot feedback + precision/recall metrics

SO5: Federation Router for Sovereign Data Exchange (M6-M18)

  • Implement mTLS peer-to-peer federation with quantum-safe key exchange
  • Deploy testbed with 15+ nodes across 3 countries (France, Czech Republic, Greece)
  • Develop trust profile specification for cross-organizational interoperability
  • Deliverables: D4.1 (Federation Router v1.0, M12), D4.2 (Testbed Deployment, M16), D4.3 (Trust Profiles, M18)
  • Verification: 100% peer-to-peer exchange (no third-party intermediaries)

SO6: Operational Pilot Validation (M12-M24) — TRL 4→6

  • Deploy across 3 pilot sites (France Public Digital Services, Czech Research Network, Greece Critical Infrastructure)
  • Validate 30% audit cost reduction vs. manual log review (measured in audit hours/incident)
  • Demonstrate 50% faster incident detection vs. current monitoring systems
  • Collect feedback from 15+ organizational peers (5 per pilot site)
  • Deliverables: D5.1 (Pilot Deployment Reports, M20), D5.2 (Standards Contributions, M22), D5.3 (Impact Assessment, M24)
  • Verification: Independent TRL audit by external evaluator (M24)

SO7: Standards Contributions & Open-Source Dissemination (M1-M24)

  • Submit 5+ standards drafts (ETSI TC CYBER, IETF CFRG, ISO/IEC JTC 1/SC 27)
  • Publish 10+ peer-reviewed papers in top-tier venues (IEEE S&P, ACM CCS, USENIX Security)
  • Achieve 500+ open-source downloads post-M24 (GitHub, Docker Hub)
  • Conduct 3+ training workshops (1 per pilot region)
  • Deliverables: D5.2 (Standards Contributions, M22), D5.3 (Impact Assessment, M24)
  • Verification: DOI links, GitHub Insights, attendance lists

Alignment with Call Topic ECCC-06

Expected Outcome 1: "Quantum-safe cryptographic solutions for critical infrastructure"Addressed by SO1-SO2: Integration of NIST-standardized PQC algorithms with hybrid transition ensuring backward compatibility

Expected Outcome 2: "TRL 6 validation in operational environments"Addressed by SO6: 3 pilot deployments across France, Czech Republic, Greece with independent TRL audit

Expected Outcome 3: "Contribution to EU digital sovereignty and cybersecurity policy (NIS2, DORA)"Addressed by SO3, SO5, SO7: LAWCHAIN audit spine for NIS2 Art. 21-23 compliance, federation for sovereign data exchange, standards contributions to ETSI/IETF

Expected Outcome 4: "Open science and standardization"Addressed by SO7: All outputs under Apache 2.0, 5+ standards drafts, 10+ publications in open access


TRL Progression Strategy (4→6)

Current State (TRL 4 — Lab Validation):

  • VaultMesh node operational with 3,600+ classical cryptographic receipts
  • Merkle compaction (36 manifests), Ed25519 signatures, AES-256-GCM encryption
  • No PQC integration, no external anchoring (TSA/blockchain), no federation

Project Target (TRL 6 — Pilot Validation):

  • PQC algorithms integrated (Kyber, Dilithium, SPHINCS+) with hybrid mode
  • LAWCHAIN audit spine with RFC-3161 TSA + blockchain anchors (99%+ completeness)
  • Ψ-Field anomaly detection (<10% false positive rate)
  • Federation router operational (15+ nodes across 3 countries)
  • Validated across 3 operational pilot environments

TRL Milestones:

  • M6: TRL 4 → TRL 5 (integration complete, lab testing with synthetic data)
  • M12: TRL 5 maintained (testbed deployment, first pilot preparations)
  • M18: TRL 5 → TRL 6 (pilots operational, real-world data collection)
  • M24: TRL 6 validated (independent audit confirms operational readiness)

Digital Sovereignty:

  • VaultMesh federation enables peer-to-peer data exchange without reliance on third-party cloud providers (US, CN)
  • 100% EU-hosted infrastructure (Ireland, Czech Republic, Greece, France)
  • Open-source under Apache 2.0 (no vendor lock-in)

Quantum Threat Preparedness:

  • Hybrid PQC transition allows gradual migration (no forced infrastructure replacement)
  • Backward compatibility ensures continuity of operations during transition
  • NIST-standardized algorithms align with EU Cybersecurity Act requirements

Critical Infrastructure Protection:

  • NIS2 compliance (Art. 21: cybersecurity measures, Art. 23: incident notification)
  • DORA compliance (Art. 5-6: ICT risk management, Art. 17: incident reporting)
  • AI Act compliance (Art. 17: record-keeping for high-risk AI systems — relevant for Ψ-Field)

1.2 Relation to the Work Programme

Call Topic Text (ECCC-06): "Proposals should address quantum-safe cryptographic transition for European critical infrastructure sectors, demonstrating TRL 6 validation across at least 2 EU member states, with contributions to European standardization bodies (ETSI, IETF) and alignment with NIS2, DORA, and Cybersecurity Act requirements."

How VaultMesh Addresses Call Requirements

Quantum-Safe Cryptographic Transition: → WP2 (Proof & Anchoring) integrates NIST FIPS 203, 204, 205 algorithms → Hybrid mode (SO2) ensures gradual, backward-compatible migration

Critical Infrastructure Sectors: → Pilot sites cover 3 sectors: public administration (France), research networks (Czech Republic), critical infrastructure operators (Greece) → Cross-sector applicability: energy, finance, healthcare (future extensions)

TRL 6 Validation Across ≥2 Member States:3 member states (France, Czech Republic, Greece) — exceeds minimum requirement → Independent TRL audit at M24 (external evaluator)

Contributions to European Standardization Bodies: → WP5 (Pilots & Assessment) targets 5+ standards drafts:

  • ETSI TC CYBER: PQC migration guidelines for critical infrastructure
  • IETF CFRG: Hybrid key exchange mechanisms (X25519 + Kyber)
  • ISO/IEC JTC 1/SC 27: Interoperability profiles for quantum-safe audit trails

Alignment with NIS2: → LAWCHAIN audit spine (SO3) provides tamper-evident logs for NIS2 Art. 23 (incident notification) → Ψ-Field anomaly detection (SO4) supports NIS2 Art. 21 (cybersecurity risk management)

Alignment with DORA: → LAWCHAIN (SO3) enables DORA Art. 17 compliance (ICT-related incident reporting) → Receipt-based audit trails provide non-repudiable evidence for financial sector regulators

Alignment with Cybersecurity Act: → PQC integration (SO1-SO2) addresses Annex II cybersecurity requirements (protection against known exploitable vulnerabilities) → Open-source approach (SO7) enables transparency and security-by-design


How VaultMesh Supports Hybrid-PQC Migration for EU Cybersecurity and Trustworthy AI

Gradual Migration Path (No "Forklift Upgrades"):

  • Dual signature mode (classical + PQC) allows organizations to validate PQC before full transition
  • Hybrid key exchange maintains interoperability with legacy systems
  • Estimated migration timeline: 2-3 years for typical organization (vs. 5-7 years for full replacement)

Trustworthy AI (Ψ-Field as Human-in-the-Loop Governance):

  • Ψ-Field anomaly detection includes human review dashboard for high-risk alerts
  • Aligns with AI Act Art. 14 (human oversight for high-risk AI systems)
  • Explainability layer (SHAP/LIME) ensures transparency of detection logic

Economic Impact:

  • €100K+ cost savings per organization via cryptographic governance (eliminates third-party certification)
  • 30% audit cost reduction (measured in pilot benchmarks)
  • 50% faster incident response (Ψ-Field early detection)

1.3 Concept and Methodology

Technical Architecture Overview

Architecture Diagram Figure 1: VaultMesh PQC Integration Architecture — TRL 4→6 Transition

Key Components (Left to Right in Diagram):

  1. Current State (TRL 4): Classical cryptography (Ed25519, ECDSA, AES), existing VaultMesh node with 3,600+ receipts
  2. Hybrid Transition Layer (TRL 5): Dual signatures, hybrid KEMs, composite certificates
  3. Post-Quantum Target (TRL 6): CRYSTALS-Kyber, CRYSTALS-Dilithium, SPHINCS+
  4. VaultMesh Core Organs: Receipt Engine, LAWCHAIN, Ψ-Field, Federation Router
  5. External Trust Anchors: RFC-3161 TSA, Ethereum, Bitcoin
  6. 3 Pilot Sites: France (public services), Czech Republic (research network), Greece (critical infrastructure)

Methodology: Five Work Packages

WP1: Governance Framework (M1-M6) — VaultMesh Lead

  • Objective: Define requirements, architecture, proof schemas
  • Tasks:
    • T1.1: Stakeholder requirements gathering (pilot sites, partners)
    • T1.2: Architecture specification (hybrid PQC transition design)
    • T1.3: Proof schema definitions (receipt formats, Merkle tree structures)
    • T1.4: LAWCHAIN design (audit spine, external anchoring)
    • T1.5: Ψ-Field specifications (anomaly detection rules, thresholds)
  • Deliverables: D1.1 (Requirements & Use Cases, M3), D1.2 (Architecture Specification, M6)
  • Milestone: M1 Requirements Review (M6) — steering committee approval

WP2: Proof & Anchoring (M1-M12) — Univ Brno Lead

  • Objective: Implement PQC sealer, verifier, and external anchoring
  • Tasks:
    • T2.1: CRYSTALS-Kyber KEM integration (key encapsulation for federation)
    • T2.2: CRYSTALS-Dilithium signature integration (receipt signing)
    • T2.3: SPHINCS+ integration (stateless hash signatures for backups)
    • T2.4: Sealer CLI tool (generate PQC-signed receipts)
    • T2.5: Verifier CLI tool (verify receipt Merkle proofs)
    • T2.6: RFC-3161 TSA integration (timestamp authority anchoring)
    • T2.7: Blockchain anchoring (Ethereum mainnet, Bitcoin OP_RETURN)
  • Deliverables: D2.1 (Sealer Implementation, M8), D2.2 (Verifier CLI, M11), D2.3 (RFC-3161 TSA Integration, M14)
  • Milestone: M2 Proof Engine Demo (M12) — functional demonstration

WP3: Ψ-Field & Observability (M4-M16) — Cyber Trust Lead

  • Objective: Develop anomaly detection service and observability dashboard
  • Tasks:
    • T3.1: Ψ-Field service architecture (collective sensing across federation)
    • T3.2: Anomaly detection algorithms (statistical, ML-based)
    • T3.3: Tunable threshold system (reduce false positives)
    • T3.4: Human-in-the-loop review dashboard (web UI for alerts)
    • T3.5: Observability dashboard (metrics, logs, receipt queries)
  • Deliverables: D3.1 (Ψ-Field Service v1.0, M10), D3.2 (Observability Dashboard, M14), D3.3 (Anomaly Detection Module, M16)
  • Milestone: M3 Ψ-Field Operational (M16) — deployed in testbed

WP4: Federation & Trust (M6-M18) — VaultMesh Lead

  • Objective: Implement federation router and deploy multi-node testbed
  • Tasks:
    • T4.1: mTLS federation router (peer-to-peer secure channels)
    • T4.2: Hybrid key exchange (X25519 + CRYSTALS-Kyber for handshakes)
    • T4.3: Capability snapshots (node metadata exchange)
    • T4.4: Testbed deployment (15+ nodes across 3 countries)
    • T4.5: Trust profile specification (interoperability standards)
  • Deliverables: D4.1 (Federation Router v1.0, M12), D4.2 (Testbed Deployment, M16), D4.3 (Trust Profile Specification, M18)
  • Milestone: M4 Federation Live (M18) — 15+ nodes operational

WP5: Pilots & Assessment (M12-M24) — France Public Lead

  • Objective: Deploy pilots, validate TRL 6, assess impact, contribute to standards
  • Tasks:
    • T5.1: Pilot site infrastructure preparation (M12-M14)
    • T5.2: Pilot deployments (France, Czech Republic, Greece) (M14-M20)
    • T5.3: Benchmarking (audit cost reduction, incident detection speed)
    • T5.4: Standards drafts (ETSI, IETF, ISO)
    • T5.5: Impact assessment & roadmap (exploitation plan)
  • Deliverables: D5.1 (Pilot Deployment Reports, M20), D5.2 (Standards Contributions, M22), D5.3 (Impact Assessment & Roadmap, M24)
  • Milestone: M5 Final Review (M24) — EU project completion

Risk Management Approach

15 identified risks across technical, organizational, financial, external categories (see Annex B: Risk Register for full details)

Top 3 Risks Requiring Active Management:

  1. R01: NIST PQC Standards Change (Likelihood: M, Impact: M, Score: 4)

    • Mitigation: Monitor NIST monthly, design modular crypto layer, budget 2 PM for updates
  2. R04: Pilot Site Deployment Delays (Likelihood: M, Impact: M, Score: 4)

    • Mitigation: Early pilot engagement (M1), infrastructure assessment (M6), sandbox fallback
  3. R08: Ψ-Field False Positives (Likelihood: M, Impact: M, Score: 4)

    • Mitigation: Tunable thresholds, human-in-the-loop review, pilot feedback loop

Overall Risk Profile: MODERATE (weighted average score: 2.9/9) Contingency Budget: €280K (10% of €2.8M total) Review Process: Monthly risk register updates in steering committee


1.4 Ambition

Novelty Beyond State-of-the-Art

Current State-of-the-Art (PQC Research):

  • NIST PQC finalists standardized (2024): Kyber, Dilithium, SPHINCS+
  • Academic prototypes: LibOQS, Open Quantum Safe project
  • Limited real-world deployments: mostly theoretical or isolated lab tests

VaultMesh Innovation (5 Novel Contributions):

1. Quantum-Resistant Federation Protocol

  • Gap: Existing PQC implementations focus on single-node encryption; no production-ready federation protocols
  • VaultMesh: Hybrid mTLS with X25519 + CRYSTALS-Kyber for peer-to-peer sovereign data exchange
  • Impact: Enables cross-organizational PQC without centralized key management

2. Proof-Driven Audit Spine (LAWCHAIN)

  • Gap: Current audit systems lack cryptographic tamper-evidence; rely on centralized logs (mutable)
  • VaultMesh: Merkle-rooted receipts + RFC-3161 TSA + blockchain anchors = non-repudiable audit trail
  • Impact: 99%+ audit trail completeness (baseline: 85% for traditional systems)

3. Ψ-Field Collective Intelligence

  • Gap: Anomaly detection is organization-siloed; no cross-organizational threat intelligence sharing with privacy
  • VaultMesh: Federated anomaly detection across multiple organizations (collective sensing without raw data exposure)
  • Impact: Faster threat detection (50%+ improvement) via cross-org pattern recognition

4. Measurable Audit Cost Reduction (-30%)

  • Gap: PQC research focuses on cryptographic performance; no studies quantify operational cost savings
  • VaultMesh: Pilot benchmarks measure audit hours/incident before vs. after LAWCHAIN deployment
  • Impact: €100K+ cost savings per organization (eliminates third-party certification)

5. Hybrid Transition Playbook for EU Critical Infrastructure

  • Gap: NIST provides algorithm specs; no practical migration guides for operational systems
  • VaultMesh: Dual signature mode + backward compatibility + pilot validation = replicable blueprint
  • Impact: Reduces migration timeline from 5-7 years to 2-3 years for typical organization

Measurable Ambition (18 Quantitative KPIs)

Reference: KPI Dashboard (PQC_KPI_Dashboard.md) — full table in Part B Section 2.1

Key Targets:

  • Excellence: TRL 4→6 (external audit), 10+ top-tier publications, 5+ standards drafts (ETSI/IETF/ISO)
  • Impact: 30% audit cost reduction, 50% faster incident detection, 500+ open-source downloads post-M24, 15+ federation nodes across 3 countries
  • Implementation: 100% deliverable on-time (13/13), ≤10% budget variance, ≥90% steering attendance

Verification Methods:

  • Independent TRL audit (M24)
  • Pilot benchmarks (D5.1): audit hours/incident, incident detection time
  • GitHub Insights (downloads, stars, forks)
  • Standards body submission confirmations (ETSI, IETF, ISO)

Expected Scientific Impact

Publications (Target: 10+):

  • IEEE Symposium on Security and Privacy (IEEE S&P)
  • ACM Conference on Computer and Communications Security (ACM CCS)
  • USENIX Security Symposium
  • Cryptology ePrint Archive (pre-prints)

Topics:

  • Hybrid PQC key exchange protocols (T4.2)
  • Federated anomaly detection with differential privacy (T3.2)
  • Merkle-based audit trails for critical infrastructure (T2.5)
  • TRL 6 validation case studies (T5.3)

Open-Source Contributions (Target: 500+ downloads):

  • GitHub repos: vaultmesh-sealer, vaultmesh-verifier, psi-field-service, federation-router
  • Apache 2.0 license (no vendor lock-in)
  • Docker images for easy deployment
  • Documentation: runbooks, API specs, deployment guides

See: PQC_KPI_Dashboard.md for full table

Summary Table (Excellence KPIs):

KPI ID Metric Baseline Target (M24) Verification
E1 TRL Level 4 6 External TRL audit
E2 PQC Algorithms Integrated 0 3 (Kyber, Dilithium, SPHINCS+) Code repository tags
E3 Publications 0 10+ (top-tier venues) DOI links
E4 Standards Drafts 0 5+ (ETSI/IETF/ISO) Draft IDs
E5 Receipt Throughput 1,000/day 10,000/day Benchmark tests (D2.2)

All 18 KPIs detailed in Part B Section 2.1 (Impact).


Document Control:

  • Version: 1.0-PART-B-EXCELLENCE
  • Date: 2025-11-06
  • Owner: VaultMesh Technologies B.V. (Coordinator)
  • Section Lead: VaultMesh (with input from all partners)
  • Status: Draft — Ready for Partner Review (Week 2-3)
  • Related: PQC_Architecture_EU_Reviewer.mmd (Figure 1), PQC_KPI_Dashboard.md, PQC_Risk_Register.md (Annex B)