functional safety and cyber security

safety: 安全,侧重于防止系统的内部故障导致生命财产损失。
security: 安保/防护,侧重于防止外部侵入导致生命财产损失。
对应到汽车领域:functional safety(功能安全)与cyber security(网络安全)

overview

functional safety: absence of unreasonable risk due to hazards caused by malfunctioning behavior of E/E systems.
Cyber security : protection of systems from the theft and damage to their hardware, software or information, as well as from disruption or misdirection of the services they provide.

功能安全还有个进化版本 SOTIF(Safety of the intended functionality, ISO21448).

method

功能安全和网络安全的方法都需要在考虑整个产品生命周期(life cycle)的基础上,从两个大的方面来实施:技术与流程。

功能安全的一些方法在ISO26262里有详细的推荐,包括硬件失效分析以及诊断方法,软件开发方法,测试方法等。

举例

CRC(Cyclic redundancy check) - safety point of view: data error detection
MAC(Message authentication code) - security point of view:data autenticity check.

References

  1. 关于safety和security的翻译问题
  2. Combining functional safety and cyber security
  3. Functional safety and cyber security
  4. The relevance of cyber-security to functional safety of connected and automated vehicles