A Blockchain-Based Proxy Re-Encryption With Equality Test for Vehicular Communication Systems

【Author】 Chen, Biwen; He, Debiao; Kumar, Neeraj; Wang, Huaqun; Choo, Kim-Kwang Raymond

【Source】IEEE TRANSACTIONS ON NETWORK SCIENCE AND ENGINEERING

【影响因子】5.033

【Abstract】Vehicular communication systems (VCS) are likely to play an increasingly important role in future smart city design, for example by improving road safety and traffic efficiency. However, there are underpinning security and privacy challenges, which may also result in under-utilization of vehicular data. In this paper, we introduce a new cryptographic primitive, namely: blockchain-based proxy re-encryption with equality test. Specifically, the proposed approach is designed to achieve reliable matching results by leveraging smart contracts, as well as efficient data sharing and privacy-preserving by combining the function of public-key encryption with equality test and proxy re-encryption. We also implement a prototype of the proposed approach and evaluate its performance with those of three other competing approaches. A comparative summary with three other competing approaches demonstrate that the proposed approach achieves all four features (i.e., decentralization, flexibility, non-interaction, and re-encryption). Findings from the prototype evaluation (using hyperledger fabric v1.4.2 as the test blockchain platform, and the fabric-sample repository) also demonstrate the utility of the proposed approach in practice.

【Keywords】Blockchain; Encryption; Public key; Data privacy; Smart contracts; Vehicular communication system; data sharing; proxy re-encryption; blockchain; public key encryption with equality test

【发表时间】2021 JUL-SEP

【收录时间】2022-01-02

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