车载社交网中基于密文属性加密的车队车辆数据共享方案  

Ciphertext-Policy Attribute-Based Encryption Scheme for Fleet Vehicle Data Sharing in Vehicular Social Network

作　　者：杨邵成 蔡英[1] 范艳芳[1] Yang Shaocheng;Cai Ying;Fan Yanfang(Beijing Information Science and Technology University,Beijing 100101)

机构地区：[1]北京信息科技大学,北京100101

出　　处：《汽车技术》2024年第8期14-21,共8页Automobile Technology

基　　金：国家自然科学基金项目(61672106);北京市自然科学基金-海淀原始创新联合基金项目(L192023)。

摘　　要：针对车载社交网(VSN)中车队车辆数据共享过程中存在的隐私泄露问题,提出一种基于密文属性的加密方案。利用基于属性的加密技术,保证仅授权的车辆可访问数据,防止车队车辆数据共享过程中发生隐私泄露;针对车队车辆数据共享时生成访问策略时间开销大、数据共享效率低的问题,通过构造访问树实现对访问策略的设计,利用路侧单元将访问树转化为访问矩阵,实现访问策略的快速生成。仿真分析结果表明,该方案能够实现对VSN中车队车辆的数据安全共享,所构建的访问策略生成方案能够有效降低车辆的计算开销。In response to the privacy leakage issues in the data sharing process among the fleet vehicles in Vehicular Social Network(VSN),this paper proposed a ciphertext policy attribute-based encryption scheme.Firstly,utilizing attributebased encryption techniques,the scheme ensures that only authorized vehicles can access the data,thereby preventing privacy leakage during the fleet vehicle data sharing process.To address the issue of high time complexity in generating access policies during fleet vehicle data sharing,and low data sharing efficiency,an access tree was constructed to design the access policies.The access tree was then transformed into an access matrix using roadside units,enabling fast generation of access policies.Experimental analysis shows that this scheme achieves secure data sharing among fleet vehicles in VSNs,the proposed access policy generation approach effectively reduces the computational overhead for vehicles.

关 键 词：车载社交网 隐私保护 密文属性加密 访问树 路侧单元 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]