A Lightweight Privacy-Preserving Data Sharing Scheme Supporting Intelligent Pricing in Smart Grid

Smart grid is the future direction of the traditional power system, with characteristics such as high efficiency and stability. Intelligent pricing, as part of the functionality of smart grids, relies on collecting a large amount of user power data to analyze and adjust electricity prices, which may lead to the possibility of user privacy data leakage. To address these issues, we propose a privacy-preserving scheme for smart grids that supports intelligent pricing (PSR). A data aggregation mechanism is designed based on Paillier encryption and Schnorr signature technology, which can protect the privacy of user data and realize efficient aggregation of user power data in the control center. In addition, a proxy re-encryption technology is developed to enable secure sharing of user power data between users and service providers. Based on security analysis and experimental evaluations, the PSR scheme has stronger security and higher efficiency compared to existing schemes.