TPMShield: Verschlüsselte Interposer, aktive Silizium-Meshes & Anti-Sniffing-Architektur

TPMShield bietet Busverschlüsselung auf Siliziumebene, dynamische Sitzungsschlüssel-Aushandlung und elektrische Interposer-Schutzmechanismen, um physisches Probing und Signalabfangen zwischen TPM-Sicherheitschips und Host-Prozessoren zu verhindern.

TPMShield Physical Bus Encryption & Interposer Defense Architecture

Encrypted SPI/I3C bus transceiver, session key establishment, and signal integrity monitor

Central System: Bus Crypto Guard - Encrypted SPI/I3C Engine

Cryptographic Nodes

  • Encrypted Transceiver
  • Session Ephemeral KEM
  • Signal Integrity Sensor
  • Command MAC Verifier
  • Glitch Detection Circuit

Architectural Layers & Protocols

  • Physical Interconnect Plane (High-Speed SPI / I3C / LPC Serial Bus): Operating up to 50 MHz serial clock rates with differential signaling and active shielding.
  • Hardware Bus Session Encryption (Authenticated AES-128-CCM / AES-GCM): Encrypting all commands, parameters, and sensitive return secrets (keys, PCRs) in transit.
  • Interposer & Probing Detection (Time-Domain Reflectometry & Capacitance Profiling): Detecting micro-probes, logic analyzer clips, or interposer flex circuits attached to bus traces.
  • Cryptographic Session Handshake (Ephemeral FIPS 203 ML-KEM-512 Key Agreement): Negotiating fresh session keys on every system reset and wake event to defeat replay attacks.

Key Metrics: 100% (Bus Traffic Encrypted) | < 40 ns (Transceiver Latency) | 0.1 pF (Interposer Detection Sensitivity) | Replay-Immune (Hardware Nonce Ratchet)

Schutz vor physischem Bus-Abhören, verschlüsselte SPI/I3C-Sitzungen und Interposer-Angriffsabwehr

Autoritative technische Referenz fuer physical bus interception protection, encrypted spi/i3c sessions & interposer attack mitigation gemaess NIST FIPS 203/204/205, gitterbasierter Kryptographie und Seitenkanal-Haertung.

Core Engineering Areas

Technical Articles

Related Cluster Architecture Specifications