ISSN 1000-1239 CN 11-1777/TP

• 信息安全 •

### 面向车联网的多服务器架构的匿名双向认证与密钥协商协议

1. 1(软件工程国家重点实验室(武汉大学) 武汉 430072); 2(景德镇陶瓷大学信息工程学院 江西景德镇 333403); 3(武汉大学计算机学院 武汉 430072) (mark.y.xie@qq.com)
• 出版日期: 2016-10-01
• 基金资助:
国家自然科学基金项目(61272112,61472287)；湖北省自然科学基金重点项目(2015CF068) This work was supported by the National Natural Science Foundation of China (61272112, 61472287) and the Key Program of the Natural Science Foundation of Hubei Province of China (2015CFA068).

### Anonymous Mutual Authentication and Key Agreement Protocol in Multi-Server Architecture for VANETs

Xie Yong1,2, Wu Libing1,3, Zhang Yubo1, Ye Luyao1

1. 1(State Key Laboratory of Software Engineering (Wuhan University), Wuhan 430072); 2(School of Information and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi 333403); 3(Computer School, Wuhan University, Wuhan 430072)
• Online: 2016-10-01

Abstract: Vehicular ad hoc networks (VANETs) is a large network that runs according to a special communication protocol to achieve wireless communication and information exchange among vehicles and roadside infrastructures, pedestrian, Internet and so on. With the development of cloud computing, more and more cloud services for VANETs will emerge. However, the services are usually provided by different servers. Thus, vehicle users have to register different servers and remember a lot of usernames and passwords. Aimed to the goal that a user can do mutual authentication with all servers after hisher one-time registration, the multi-server architecture authentication protocols have been proposed and applied in many areas, but no one focuses on VANETs. The instantaneity of communication in VAENTs poses a new challenge on the multi-server architecture authentication protocol. The existing multi-server architecture authentication protocols use the complex bilinear pairing operations, which cannot meet the strict requirements of VANETs on authentication and communication costs. In this paper, a new efficient anonymous mutual authentication and key agreement protocol for the multi-server environment of VANETs is proposed. The proposed protocol decreases the complexity of protocol by using elliptic curve cryptosystem (ECC) to construct a simple authentication way, and provides the function of random anonymity to protect the privacy of vehicle. The security of the proposed protocol is proved in the random oracle model. Performance analysis shows that compared with the most recent mutual authentication protocols, our protocol decreases the computation and communication cost at least 61% and 62% in the mutual authentication and key agreement phase, and can better meet the computation and communication cost requirements of VANETs.