面向软件定义汽车的硬件 TPM 2.0 安全飞地架构

规范车规级可信平台模块（TPM 2.0）在车载中央超算与区域节点中的硬件融合：在物理防篡改安全芯片中锚定根密钥，将启动链度量绑定至 PCR 寄存器，支撑云端可验证的密码学远程身份认证。

Automotive TPM Engine Zonal Architecture

Central Controller: Automotive TPM Engine — Hardware Security Enclave

Zonal Control Units & TSN Ring

Platform Configuration Registers (PCRs)
Hardware Key Hierarchy & Endorsement Key
SPI / I3C Secure Bus Interface
Remote Attestation Signature Engine
Physical Anti-Tampering Shield

为何纯软件密钥存储无法通过车规级准入审计

在通用闪存中保存加密私钥极易受到物理引脚探针、电压毛刺注入及冷启动侧信道窃密攻击。专用车规 TPM 2.0 芯片具备主动网状屏蔽层、防拆自毁清零触发机制与硬件级密码学隔离。

Core Engineering Areas

Measured Boot & PCR Sealing — 通过 SHA-256 递归扩展 PCR（平台配置寄存器）度量值，仅当整车各级引导程序均处于未篡改基线状态时，TPM 硬件才解封并下发通信主密钥。
Remote Platform Attestation — 基于由硬件背书密钥（EK）签署的 TPM Quote 结构体，让车企云端在向车辆下发控制代码前能够以数学证明确认实车固件未经篡改。
Tamper Detection & Zeroization — 精准侦测物理钻孔穿刺、聚焦激光攻击与外壳强行拆卸等多种物理入侵手段，并即刻触发硬件清零线路。

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