Overview

Implement server-side validation of NTDF authorization chains and DPoP proof-of-possession for maximum DRM security.

Phase 3: NTDF Chain Validation

• Build Terminal Link parser and signature verifier
• Implement nested NTDF chain unwrapping (Terminal→NPE→PE)
• Extract and validate claims from PE/NPE for policy enforcement
• Add DPoP proof validation (RFC 9449)

Phase 4: Honeypot System for Compromised Devices

• Build behavioral analytics pipeline (timing, access patterns)
• Implement active fingerprinting module (sensor data collection)
• Create decoy key delivery system with phone-home tracking
• Add threat scoring and anomaly detection

Phase 5: Production Hardening

• Add Redis-backed token revocation system
• Implement rate limiting middleware
• Add key rotation automation
• Complete geofence implementation

Security Level

Target: Maximum (Enterprise-Grade)

• Zero-trust: Every request validates full attestation chain
• Honeypot identifies jailbroken/modified devices
• DPoP prevents token theft/replay

References

• authnz-org/authnz-rs#13: Terminal Link Authentication
• NTDF Token Attestation app#161: Swift NTDF chain implementation

Acceptance Criteria

• Terminal Link validation integrated with rewrap endpoint
• DPoP proofs validated per RFC 9449
• Honeypot system operational
• All tests pass
• Performance: P95 latency < 100ms