FADB: A Fine-Grained Access Control Scheme for VANET Data Based on Blockchain

Hui Li,Lishuang Pei,Song Chen,Dan Liao,Ming Zhang,Du Xu

doi:10.1109/access.2020.2992203

Abstract

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.

Highlights

With the rapid development of technologies such as mobile computing, wireless communication, and embedded devices, Vehicular Ad Hoc Network (VANET) is gradually maturing [1]
By utilizing the blockchain technology and ciphertext-based attribute encryption (CP-attribute based encryption (ABE)) algorithm, we propose a Fine-Grained Access Control Scheme for VANET Data based on Blockchain (FADB), which satisfies the distributed storage of VANET data
SYSTEM MODEL The proposed FADB describes a new type of distributed VANET data storage and access control system by combining Ethereum, CP-ABE, IPFS and other technologies

Summary

INTRODUCTION

With the rapid development of technologies such as mobile computing, wireless communication, and embedded devices, VANET is gradually maturing [1]. H. Li et al.: FADB: A Fine-Grained Access Control Scheme for VANET Data Based on Blockchain. By utilizing the blockchain technology and CP-ABE algorithm, we propose a Fine-Grained Access Control Scheme for VANET Data based on Blockchain (FADB), which satisfies the distributed storage of VANET data. By combining the CP-ABE encryption technology, Ethereum blockchain and IPFS [14], the FADB realizes distributed storage and fine-grained access for VANET data. By introducing the blockchain into VANET, we can effectively guarantee the secure storage of data and provide a durable and efficient data access service in this paper. In [28], a multi-authority cloud storage data access control scheme was proposed, which had efficient decryption and attribute revocation functions. The blockchain-based framework cannot provide users with fine-grained access control services It restricts the efficiency and flexibility of data access.

SYSTEM MODEL

ALGORITHM DESIGN

SMART CONTRACT DESIGN

EVALUATION

CONCLUSION