VANET中高效的格基异构多接收者签密方案  

Efficient lattice-based heterogeneous multi-receiver signcryption scheme in VANET

作　　者：曹冰燕 王敏[1,2] 施俊 徐杰 Cao Bingyan;Wang Min;Shi Jun;Xu Jie(College of Information Science&Technology,Ministry of Education,Yunnan Normal University,Kunming 650500,China;Key Laboratory of Ethnic Educational Information,Ministry of Education,Yunnan Normal University,Kunming 650500,China)

机构地区：[1]云南师范大学信息学院,昆明650500 [2]云南师范大学民族教育信息化教育部重点实验室,昆明650500

出　　处：《计算机应用研究》2025年第4期1204-1210,共7页Application Research of Computers

基　　金：国家自然科学基金资助项目(62262073);云南省应用基础研究计划资助项目(202101AT070098);云南省万人计划青年拔尖人才资助项目(YNWR-QNBJ-2019-237);云南省重大科技专项计划资助项目(202402AD080002)。

摘　　要：随着车载自组织网络(VANET)技术在智能交通系统中的广泛应用,数据隐私和安全性问题日益凸显。针对车辆在异构密码系统通信中的隐私泄露问题,为了满足VANET的实时性需求,提出了一个高效的隐私保护格基异构多接收者签密方案。该方案实现了基于无证书加密(CLC)的路边单元(RSU)与基于身份加密(IBC)的车辆之间的安全数据交换。此外,设计了多接收者签密机制,允许将多次签密行为整合为一次操作,从而提升了传输效率。所提方案还使用拒绝采样技术,从而显著降低了签密者的计算开销。最后,通过随机预言机模型确认了此技术的高安全性。理论分析与实验结果显示,该方案在确保安全的基础上,有效降低了计算和通信开销。With the extensive application of VANET technology in intelligent transportation systems,issues of data privacy and security have become increasingly prominent.To tackle the problem of privacy breaches in vehicle communications within diverse cryptographic frameworks and to accommodate the immediate demands of VANET,this study proposed an efficient lattice-based heterogeneous multi-receiver signcryption scheme for privacy protection.This approach facilitated secure exchanges between the road-side unit(RSU),which utilized a certificateless cryptosystem(CLC),and vehicles employing an identity-based cryptosystem(IBC).Additionally,the scheme designed multi-receiver signcryption mechanism,allowing multiple signcryption operations to be merged into one,thereby improving communication efficiency.The proposed scheme also utilized rejection sampling techniques,significantly reducing the computational overhead for signcryptors.Finally,the security of this scheme was validated under the random oracle model.Theoretical analysis and experimental results show that this scheme effectively reduces computational and communication costs while ensuring security.

关 键 词：车载自组织网络 异构多接收者签密 格 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]