FADB: A Fine-Grained Access Control Scheme for VANET Data Based on Blockchain
FADB: A Fine-Grained Access Control Scheme for VANET Data Based on Blockchain
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DOI：
10.1109/access.2020.2992203
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发表时间：
2020-01-01
期刊：
影响因子：
3.9
通讯作者：
Xu, Du
中科院分区：
文献类型：
--
作者：
Li, Hui;Pei, Lishuang;Xu, Du
车辆自组织网络（Vehicular Ad Hoc Network， VANET）是智能交通系统的重要基础，广泛应用于交通管理、自动驾驶、道路优化等领域。随着VANET的逐步普及和进一步发展，产生了大量的VANET数据。然而，在使用VANET数据为用户提供服务时，对安全性和隐私性提出了巨大的挑战。本文结合区块链和基于密文的属性加密（CP-ABE）技术，提出了一种基于区块链的VANET数据细粒度访问控制方案（FADB）。在FADB中，我们采用区块链代替第三方服务提供商进行用户身份管理和数据存储。并且可以根据用户属性建立不同的VANET数据访问权限。通过改进CP-ABE，轻量级VANET设备可以将复杂的加密和解密操作外包给功能强大的rsu，进一步提高数据访问效率。最后，我们进行了一系列的仿真测试和安全性分析，证明了FADB能够提供有效的数据安全性和较低的性能开销。
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.