A Secure Access Algorithm of Terminal Equipment based on Cryptography and Blockchain Applied in New Type of Power System

Abstract

The new type of power system needs a large number of distributed power sources. Power electronic devices and flexible loads are connected to the power grid. The security and reliability of equipment access directly affect the stable operation of the power system. The traditional centralized device access management mode is no longer applicable, because the terminal devices are diverse and widely distributed, and the applications of each terminal are complex, so the authentication and access efficiency based on centralized device access management is limited. Therefore, it is urgent to study the distributed identity authentication and trusted access technology of devices. In order to solve the problems of poor compatibility and weak anti attack ability of centralized access management in the process of device identity authentication, this paper proposes a distributed terminal device identity authentication method based on cryptography and blockchain, and designs the detailed process of certificate issuance and identity authentication. Finally, the proposed mechanism is tested, and the results show that the proposed distributed authentication mechanism can resist a variety of malicious attacks, and has certain advantages in computing and storage costs.