车载网中高效安全的无证书聚合签名方案  

Efficient and Secure Certificateless Aggregate Signature Scheme in Vehicle Networks

作　　者：顾妍妍 沈丽敏 高晨旭 朱婷[1] GU Yanyan;SHEN Limin;GAO Chenxu;ZHU Ting(School of Computer and Electronic Information,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]南京师范大学计算机与电子信息学院,南京210023

出　　处：《信息网络安全》2024年第2期188-202,共15页Netinfo Security

基　　金：国家自然科学基金[61802195]。

摘　　要：为了保障车载网系统中车辆间通信的完整性、真实性、有效性和即时性,文章提出了一种能抗合谋攻击且不需要双线性对的无证书聚合签名方案。无证书密码体制既较好地解决了基于身份的密码体制所固有的密钥托管问题,又保留了基于身份的密码体制不需要使用公钥证书的优点。文章基于椭圆曲线离散对数问题和分叉引理,在随机预言模型中严格证明了其安全性。性能及效率分析表明,该方案是有效的,在保证通讯数据完整性和真实性的同时,减少了带宽开销以及存储开销,提高了验证效率。Certificateless cryptography not only eliminates the key escrow problem inherent in ID-based cryptography,but also maintains the advantages of ID-based cryptography that does not need public key certificate.In order to ensure the integrity,authenticity,validity and immediacy of the communication between vehicles in the VANETs system,this paper proposed a certificateless aggregate signature scheme without bilinear pairing and the scheme could resist coalition attacks.In the random oracle model,the security of the algorithm was rigorously proved based on the elliptic curve discrete logarithm problem and bifurcation lemma.The performance and efficiency analysis show that the scheme is effective,it can ensure the integrity and authenticity of communication data,reduce bandwidth and storage overhead,and improve the verification efficiency.

关 键 词：聚合签名 合谋攻击 无证书密码体制 车载网 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]