Affiliations: [a] State Grid Liaoning Electric Power Supply Co., Ltd, Shenyang, Liaoning, China | [b] Electric Power Research Institute of State Grid Liaoning Electric Power Supply Co., Ltd, Shenyang, Liaoning, China | [c] State Grid Dalian Electric Power Supply Co., Ltd, Dalian, Liaoning, China | [d] Shenyang Institute of Engineering, Shenyang, Liaoning, China
Correspondence:
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Corresponding author: Zhenliu Zhou, Shenyang Institute of Engineering, Shenyang, Liaoning 110136, China. E-mail: zhouzl@sie.edu.cn.
Abstract: 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.
Keywords: Power internet of things, smart terminal device, security risk, device authentication
