车载自组网中基于密钥协商的条件隐私保护认证方案

Conditional Privacy-Preserving Authentication Scheme Based on Key Agreement for Vehicle Ad Hoc Networks

车载自组网作为智慧交通的重要组成部分,其安全和隐私一直是被关注的2个难题。特别是在计算资源和存储资源向边沿端移动的去中心化趋势下,分布式的认证集群开始取代单一的认证中心,而现有的认证方案中较少考虑到认证服务集群的稳定性。为此,文章提出一种车载自组网中基于密钥协商的条件隐私保护认证方案。该方案利用树实现密钥协商协议中的密钥生成和更新,以保证认证服务集群中各个服务节点之间的信息同步;同时,结合匿名认证技术和分布式认证集群共同保障车辆、认证服务集群、可信权威之间的认证过程的隐私和安全。该方案不仅可保护车载自组网中的安全和隐私,还可维护认证集群的健壮性。

Vehicular ad hoc network is an important part of intelligent transportation,and the security and privacy of vehicular ad hoc network are two challenging issues which concerned by academia and industry.Especially in the decentralized trend of computing resources and storage resources moving to the edge,distributed authentication clusters begin to replace a single authentication center,but the stability of authentication service clusters is seldom considered in the existing authentication schemes.This paper proposes a conditional privacy protection authentication scheme based on key agreement for vehicular ad hoc networks.This scheme uses the tree to realize the key generation and update in the key agreement protocol,and ensures the information synchronization between each service node in the authentication service cluster.At the same time,anonymous authentication technology and distributed authentication cluster are combined to ensure the privacy and security of the authentication process among vehicles,authentication service clusters and trusted authorities.This scheme not only protects the security and privacy in vehicular ad hoc networks,but also maintains the robustness of authentication clusters.