| 總結: | Internet of Electric Things (IoET) based on edge computing mode has advantages in functionality, communication efficiency and construction cost. However, the incompleteness of relevant security protocols restricts their application in smart grids. Therefore, we propose a lightweight three-layer device identity mutual authentication and key agreement protocol suitable for IoET with two-hops architecture. The simulation results of formal security analysis and automated security analysis toolset AVISPA on security attacks show that this protocol can meet the security requirements of identity authentication, device ID anti tracking, and session keys. Compared with recent lightweight third-party authentication protocols, our proposed scheme has advantages in resource consumption of servers and IoET Connector (IoetC) when multiple sensors require simultaneous authentication.
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