Journal
IEEE ACCESS
Volume 8, Issue -, Pages 85190-85203Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2020.2992203
Keywords
VANET; blockchain; CP-ABE; access control
Categories
Funding
- Project on Public Safety Risk Prevention and Control and Emergency Technical Equipment [2018YFC0831002]
- Sichuan Science and Technology Program [20ZDYF2832]
- National Natural Science Foundation of China [61971105]
- Fundamental Research Funds for the Central Universities [ZYGX2019J004, ZYGX2019J125]
- Chengdu Science and Technology Program [2018YFYF00188GX]
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Vehicular Ad Hoc Network (VANET) is an important foundation of intelligent transportation system and is widely used in traffic management, automatic driving, and road optimization. With the gradual popularization and further development of VANET, a large amount of VANET data has been produced. However, it poses huge challenges to the security and privacy when using VANET data provides services for users. In this paper, combining the technologies of blockchain and ciphertext-based attribute encryption (CP-ABE), we propose a fine-grained access control scheme for VANET data based on blockchain (FADB). In FADB, we employ the blockchain to replace the third-party service providers for user identity management and data storage. And different VANET data access rights can be established according to user attribute. By improving the CP-ABE, the lightweight VANET devices can outsource complex encryption and decryption operations to powerful RSUs and further improve the efficiency of data access. Final, we carry out a series of simulation tests and security analysis, proving that the FADB can provide effective data security and low performance overhead.
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