A Privacy-Preserving Lightweight Energy Data Sharing Scheme Based on Blockchain for Smart Grid

Xinyang Li, Yujue Wang, Yong Ding, Shiye Ma, Bei Xiao, Zhihong Guo, Xiaorui Kang, Xiaohui Ma, Jia Mai

Abstract: As many users join the smart grid system, energy companies need user energy data to manage and improve energy delivery. However, while enjoying the services provided by energy companies, the energy data submitted by users may lead to the risk of privacy leakage. To solve this problem, this paper proposes a privacy-preserving scheme for smart grid based on blockchain and multi-receiver encryption (PPBME). The scheme utilizes lightweight multi-receiver encryption, blockchain, and smart contract technologies to solve the problem of privacy leakage when user data are shared. Also, our PPBME construction employs off-chain storage technology to improve the scalability of the blockchain, so that reducing the storage pressure of the blockchain. This paper also proposes a compensation mechanism for the loss of user privacy. According to the security analysis and computational cost analysis, our PPBME scheme is efficient and secure in supporting smart grid applications.