论文标题
使用模拟争夺电路来实现汽车传感器的完整性和真实性
Using analog scrambling circuits for automotive sensor integrity and authenticity
论文作者
论文摘要
汽车域迅速增加了嵌入式数量的复杂和相互联系的电子系统。其中很大一部分是实时安全至关重要的设备，必须保护不受网络安全攻击。最近的法规强加了汽车制造商来保护车辆免受替换可信赖的电子硬件并操纵传感器收集的信息。模拟传感器是关键要素，其安全性现在严格受到新的R155建议的监管，但缺乏开发和建立的解决方案。这项工作朝这个方向迈出了一步，为汽车模拟传感器增加了完整性和身份验证，该传感器提出了一个模式，以创建基于用商业货架（COTS）操作放大器实现的拼凑机制来创建模拟签名。所提出的体系结构实现了硬件秘密和难以颠倒的指数函数，以生成信号的签名。在LTSpice上实现并模拟了电路的原型。初步结果表明了拟议的模式的可行性，并为进一步发展提供了有趣的提示，以提高方法的鲁棒性。
The automotive domain rapidly increases the embedded amount of complex and interconnected electronics systems. A considerable proportion of them are real-time safety-critical devices and must be protected against cybersecurity attacks. Recent regulations impose carmakers to protect vehicles against replacing trusted electronic hardware and manipulating the information collected by sensors. Analog sensors are critical elements whose security is now strictly regulated by the new UN R155 recommendation but lacks well-developed and established solutions. This work takes a step forward in this direction, adding integrity and authentication to automotive analog sensors proposing a schema to create analog signatures based on a scrambling mechanism implemented with commercial-of-the-shelf (COTS) operational amplifiers. The proposed architecture implements a hardware secret and a hard-to-invert exponential function to generate a signal's signature. A prototype of the circuit was implemented and simulated on LTspice. Preliminary results show the feasibility of the proposed schema and provide interesting hints for further developments to increase the robustness of the approach.
