TPMShield: 加密中介层、主动芯片防护网眼与防物理引脚嗅探架构

TPMShield 提供芯片级总线硬件加密、动态会话密钥协议以及电气转接板 (Interposer) 物理探针防御方案，彻底粉碎攻击者针对 TPM 安全芯片与主处理器之间物理总线实施的逻辑分析仪探测与信号截获窃听。

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)

物理总线拦截防护、加密SPI/I3C会话与中介攻击缓解

深入剖析 NIST FIPS 203/204/205 标准、格密码学、侧信道攻击防护及后量子计算防御架构中的Physical Bus Interception Protection, Encrypted SPI/I3C Sessions & Interposer Attack Mitigation关键工程实践。

Core Engineering Areas

Technical Articles

Related Cluster Architecture Specifications