Secure data sharing scheme in Internet of Vehicles based on blockchain

doi:10.3785/j.issn.1008-973X.2021.05.016

Journal of ZheJiang University (Engineering Science)

2021, Vol. 55

Issue (5): 957-965 DOI: 10.3785/j.issn.1008-973X.2021.05.016

Secure data sharing scheme in Internet of Vehicles based on blockchain

Xue-jiao LIU1(

),Yi-dan YIN1,Wei CHEN1,Ying-jie XIA2,*(

),Jia-li XU1,Li-dong HAN1

1. School of Information Science and Engineering, Hangzhou Normal University, Hangzhou 311121, China
2. College of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China

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Abstract

The data is easy to be tampered and the access control of data is not flexible in the Internet of Vehicles (IoV). A secure data sharing scheme based on blockchain and ciphertext-policy weighted attribute-based encryption was proposed aming at the above problem. In this scheme, roadside units jointly maintain the generation, verification and storage blocks to achieve distributed storage of data, which ensures the data from being tampered. Attribute-based access control ensures that only authorized entities can access the content of data on the blockchian. A hierarchical access policy formulation method based on multi-attribute was proposed to reduce the complexity of access control policy aiming at the data sharing requirements among the multiple entities and roles in the IoV, by mining the association of attributes in the roles for data access. Experimental results show that the proposed scheme can realize the secure storage and flexible access control of the data in the IoV, and the hierarchical access policy formulation method can effectively reduce the calculation and transmission overhead of vehicles, and meet the access requirements of multiple entities and roles in the IoV.

Key words： blockchain attribute-based encryption (ABE) Internet of Vehicles (IoV) access control data sharing

Received: 06 July 2020 Published: 10 June 2021

CLC:	TP 399
	TN 915

Fund: 浙江省自然科学基金资助项目（LY19F020021）；国家自然科学基金资助项目（61873232）；国家自然科学基金青年科学基金资助项目（61702153）；2020年浙江省大学生科技创新活动计划（新苗人才计划）资助项目（2020R427062）；公安部重点实验室（基于大数据架构的公安信息化应用）资助项目（2020DSJSYS005）

Corresponding Authors: Ying-jie XIA E-mail: liuxuejiao0406@163.com;xiayingjie@zju.edu.cn

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Cite this article:

Xue-jiao LIU,Yi-dan YIN,Wei CHEN,Ying-jie XIA,Jia-li XU,Li-dong HAN. Secure data sharing scheme in Internet of Vehicles based on blockchain. Journal of ZheJiang University (Engineering Science), 2021, 55(5): 957-965.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2021.05.016 OR http://www.zjujournals.com/eng/Y2021/V55/I5/957

基于区块链的车联网数据安全共享方案

针对传统车联网（IoV）数据易被篡改、访问控制不够灵活的问题，提出基于区块链和带权密文策略属性基加密的车联网数据安全共享方案. 该方案由路侧单元共同维护区块的生成、验证和存储，实现分布式数据存储，保证数据不可篡改；基于属性对链上数据进行访问控制，保证只有授权的访问者才能访问数据内容；针对车联网场景下多实体、多角色的数据共享需求，通过挖掘车联网数据访问角色间属性权限的关联关系，构造基于多属性的层级访问策略制定方法，简化访问控制策略的复杂度. 实验分析表明，该方案能够实现对车联网数据的安全存储与灵活访问控制，所构建的层级访问策略制定方法能够有效降低车辆的计算和传输开销，满足车联网场景下多实体、多角色的访问需求.

关键词： 区块链, 属性基加密（ABE）, 车联网（IoV）, 访问控制, 数据共享

Fig.1 System model of data security sharing

Fig.2 Process of data storage and access

Fig.3 Access control policy

Fig.4 Consensus process on blockchain

Tab.1 Comparison with other data sharing schemes in IoV

Fig.5 Simulated map of data sharing scene

Tab.2 Simulation parameters of data sharing scene

Fig.6 Encryption efficiency of vehicle

Fig.7 Transmission size of ciphertext of vehicle to RSU

Fig.8 Trust of malicious nodes

Fig.9 Consensus time of RSU


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