基于无证书签密的车联社会网络安全通信机制  

Secure communication mechanism for VSN based on certificateless signcryption

作　　者：张文波 黄文华[1,2] 冯景瑜[1,2] ZHANG Wenbo;HUANG Wenhua;FENG Jingyu(School of Cyberspace Security,Xi’an University of Posts and Telecommunications,Xi’an 710121,China;National Engineering Laboratory for Wireless Security,Xi’an University of Posts and Telecommunications,Xi’an 710121,China)

机构地区：[1]西安邮电大学网络空间安全学院,陕西西安710121 [2]西安邮电大学无线网络安全技术国家工程实验室,陕西西安710121

出　　处：《通信学报》2021年第7期128-136,共9页Journal on Communications

基　　金：国家自然科学基金资助项目(No.61802302);陕西省自然科学基础研究计划基金资助项目(No.2019JM-442)。

摘　　要：针对车联社会网络(VSN)的通信安全问题,提出了一种高效的无证书签密方案,在随机预言模型下基于计算性Diffie-Hellman和椭圆曲线离散对数困难性问题证明了所提方案的安全性,为VSN成员间的通信提供了机密性和不可伪造性保护。采用假名机制解决VSN中的隐私保护问题时,在不需要安装额外防篡改装置的条件下,提出了一种车辆假名及其密钥的自生成机制。性能分析表明,所提方案可有效减少通信量,并可显著减少密钥生成中心的计算负担。To solve the communication security problems of vehicular social network(VSN),an efficient certificateless signcryption scheme was proposed.The proposed scheme was proven secure in the random oracle model based on the computational Diffie-Hellman problem and elliptic curve discrete logarithm problem,which provided confidentiality and unforgeability protection for VSN members.In addition,when the pseudonym mechanism was used to solve the privacy protection problem in VSN,without installing tamper-proof device,a self-generation mechanism for vehicle pseudonyms and their keys was proposed.The performance analysis shows that the proposed scheme can decrease communication cost,and significantly reduce the computation overhead of the key generation center.

关 键 词：车联社会网络 车载自组网 隐私保护 无证书密码体制 签密 

分 类 号：TN393[电子电信—物理电子学]