| 摘要: |
| 针对车联网数据共享场景存在的单点故障、合谋攻击、低吞吐量及高计算成本等问题，提出了一种基于双区块链的隐私保护车联网数据共享方案(A Privacy-preserving and Blockchain-based Data Sharing Scheme for IoV,PBDSS)，其核心创新体现在三方面：首先，利用区块链存储数据和管理密钥，防止车联网数据被篡改，并有效抵抗合谋攻击；其次，通过将复杂的解密计算外包给边缘节点，同时实现数据在线/离线加密，降低了用户端计算代价；最后，设计数据分级共享机制，实现了安全性和效率之间的平衡。安全性分析与实验结果表明，相较于现有典型车联网数据共享方案，PBDSS在安全性与性能方面均具有显著优势。 |
| 关键词: 车联网(IoV) 双区块链 属性基加密 数据共享 |
| DOI：10.20079/j.issn.1001-893x.250413001 |
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| 基金项目: |
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| A Privacy-preserving and Dual Blockchain-enabled HierarchicalData Sharing Scheme for Internet of Vehicles |
| GUO Peng,LIU Yali,CHEN Dongdong,DING Xujie,HAO Guosheng |
| (1.College of Computer Science and Technology,Jiangsu Normal University,Xuzhou 221116,China;2.Guangxi Key Laboratory of Cryptography and Information Security,Guilin University of Electronic Technology,Guilin 541004,China) |
| Abstract: |
| For the problems of single point of failure,low throughput,collusion attack and high computational cost in Internet of Vehicles(IoV) data sharing scenarios,a privacy-preserving and blockchain-based data sharing scheme for IoV(PBDSS) is proposed,and its core innovations are reflected in three areas:Firstly,blockchain is utilized to store data and manage key,which prevents data from being tampered and effectively resists collusion attack;Secondly,by outsourcing the complex decryption computation to the edge nodes,online/offline encryption is achieved,which reduces the computational cost of the vehicle;Finally,the design of a hierarchical data-sharing mechanism strikes a balance between security and efficiency.Security analysis and experimental results show that PBDSS has significant advantages in terms of security and performance compared with typical existing data sharing schemes for IoV. |
| Key words: Internet of Vehicles(IoV) dual blockchain attribute-based encryption data sharing |
