While connected vehicle (CV) applications have the potential to revolutionize traditional transportation system, cyber and physical attacks on them could be devastating. In this work, we propose an efficient dual cyber-physical blockchain framework to build trust and secure communication for CV applications. Our approach incorporates blockchain technology and physical sensing capabilities of vehicles to quickly react to attacks in a large-scale vehicular network, with low resource overhead. We explore the application of our framework to three CV applications, i.e., highway merging, intelligent intersection management, and traffic network with route choices. Simulation results demonstrate the effectiveness of our blockchain-based framework in defending against spoofing attacks, bad mouthing attacks, and Sybil and voting attacks. We also provide analysis to demonstrate the timing efficiency of our framework and the low computation, communication, and storage overhead for its implementation.

翻译：虽然连通车辆(CV)应用有可能使传统运输系统发生革命性变革,但网络和物理攻击可能具有破坏性。在这项工作中,我们提出一个高效的双向网络物理连锁框架,为CV应用建立信任和安全通信。我们的方法包括连锁技术和车辆的物理感知能力,以便对大型车辆网络中的攻击作出快速反应,而大型车辆网络中的资源管理费用较低。我们探索将我们的框架应用到三个CV应用中,即公路合并、智能交叉管理、交通网络和路由选择。模拟结果表明我们基于连锁框架在保护防粪便攻击、恶嘴攻击、西比尔和投票攻击方面的效力。我们还提供分析,以展示我们框架的时间效率以及用于实施该框架的低计算、通信和储存间接费用。