Design of identity authentication scheme in smart grid based on blockchain

Abstract

With the development of information technology and the increasingly complex electricity environment, the traditional power grid is gradually unable to meet the needs of modern production, which is replaced by the smart grid (SG). Although the SG improves people's quality of life to a certain extent, it also brings many privacy and security risks. Different entities in the network have various problems such as lack of identity privacy protection and anonymity, inability to protect against multiple types of attacks, and centralized single point of failure. Based on the above problems, this paper proposes a secure and anonymous identity authentication mechanism based on blockchain. The process is divided into three stages: 1) System initialization, 2) Registration, 3) Mutual authentication: the blockchain is used for secure transactions in the SG environment., while the Elliptic Curve Digital Signature Algorithm (ECDSA) for mutual authentication. Furthermore, this mechanism minimizes the communication and computation overhead for resource-constrained photovoltaic generation users (PGU s). Through security and performance analysis, compared with the existing schemes, the identity authentication scheme proposed in this paper reduces security attacks., communication costs and computing time, and further reduces the computing overhead and communication overhead of PGUs.