一种使用区块链保护车联网数据隐私的方法

doi:10.19665/j.issn1001-2400.2021.03.003

Abstract

Abstract:

With the rapid development of the Internet of Things,vehicle industry is undergoing a rapid transformation from the early vehicle Ad-Hoc network to the Internet of Vehicles (IoV) in which massive vehicles and on-board smart devices can realize data sharing and interaction.However,this brings about a big challenge for the security of shared data in a huge volume containing a lot of user privacy,especially the issues of access control,trust and key escrow.To address these problems,we propose an efficient blockchain-based distributed data sharing method in IoV.In our scheme,blockchain transactions are utilized for trustworthily data storage and access as well as user revocation.To realize end device verification,we introduce certificateless cryptography for transaction verification of blockchain nodes and the ease of the key escrow problem.Moreover,we propose an efficient partial policy-hidden CP-ABE scheme for data fine-grained access control with efficient user revocation.Security analysis and experiments demonstrate that our scheme is secure,efficient and practical.

Key words: blockchain, attribute-based encryption, strategy partial hiding, distributed storage, verifiable outsourcing decryption

CLC Number:

TP311.13

YANG Yanbo,ZHANG Jiawei,MA Jianfeng. Method for using the blockchain to protect data privacy of IoV[J].Journal of Xidian University, 2021, 48(3): 21-30.

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Method for using the blockchain to protect data privacy of IoV

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