On the Performance Evaluation of Vehicular PKI Protocol for V2X Communications Security

Farah Haidar, Arnaud Kaiser, B. Lonc
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引用次数: 30

Abstract

Cooperative Intelligent Transportation Systems (CITS) is an ongoing technology that will change our driving experience in the near future. In such systems, vehicles and Road-Side Units (RSU) cooperate by broadcasting V2X messages over the vehicular network (802.11p). Safety applications use these data to detect dangerous situations on time and avoid them. The security of V2X communications is based on the use of a vehicular Public Key Infrastructure (PKI) that delivers digital certificates to vehicles and RSU. Vehicles frequently change their certificate in order to make tracking more difficult and thus preserve drivers privacy. In this paper, we evaluate the performance of our PKI regarding the reloading of certificates by comparing two communication profiles (with and without V2X security). We developed a Proofof- Concept (PoC) with real implementation of the PKI protocol and the embedded system. The obtained results show that the end-to-end latency between a requesting vehicle and the PKI is non-negligible. We then discuss and propose optimizations that can be done to improve the performance of the system.
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基于V2X通信安全的车载PKI协议性能评估
协同智能交通系统(CITS)是一项正在发展的技术,将在不久的将来改变我们的驾驶体验。在这种系统中,车辆和路侧单元(RSU)通过车载网络(802.11p)广播V2X消息进行合作。安全应用程序使用这些数据及时发现危险情况并避免它们。V2X通信的安全性基于车辆公钥基础设施(PKI)的使用,该基础设施向车辆和RSU提供数字证书。车辆经常更改其证书,以使跟踪更加困难,从而保护驾驶员的隐私。在本文中,我们通过比较两种通信配置文件(有和没有V2X安全性)来评估PKI在重新加载证书方面的性能。我们开发了一个概念验证(PoC),并实际实现了PKI协议和嵌入式系统。得到的结果表明,请求车辆和PKI之间的端到端延迟是不可忽略的。然后,我们讨论并提出可以改进系统性能的优化方法。
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