Smart Grid Data Security Sharing Based on Cloud-Edge Collaboration

In recent years, the rapid advancement of smart terminals and wireless networks has led to exponential growth in the number of powers of IoT devices and the volume of data. These data resources have become important assets for power enterprises, significantly enhancing the intelligent perception, internal control capabilities, and customer service efficiency of power grids. However, as a national critical infrastructure, electric power data is highly susceptible to cyberattacks, and if leaked, it can pose significant security risks and result in substantial economic losses. Therefore, power enterprises must strengthen data security protection and address security challenges in data exchange, sharing, and mining. This paper proposes a cloud-edge collaborative smart grid data security sharing scheme, which combines zero-knowledge proof technology and a secret sharing scheme to achieve fine-grained access control and privacy protection for user requests. For authenticated legitimate users, a homomorphic encryption algorithm is used to enable secure queries of specific data in the database. Finally, simulation results demonstrate the effectiveness of the distributed data access authentication and secure query scheme proposed in this paper.