A method of lightweight flexible terminal device authentication in the power internet of things

摘要

There are a large number of smart terminal devices in the power Internet of things, which are facing a variety of security threats. In this paper, structure of the power IoT is introduced, security risks of the terminal devices in the perception layer of the power IoT are analyzed, and security requirements and authentication technologies of identity authentication of the terminals are studied. Then a lightweight flexible authentication method suitable for terminal devices in the power IoT is proposed to implement direct peer to peer authentication between terminal devices, which is based on the public key encryption technology and the assistance of lightweight certificate server. Relying on this method, the central security risk and performance bottleneck of the certificate server are reduced effectively, the fake attacks against the terminal devices can be prevented, and the illegal use of terminal devices can be found timely.