Abstract
With the rapid development of wireless technology, the deep coupling of cyber–physical power system (CPPS) is accelerated, and the openness of communication network makes the importance of secure information transmission increasingly prominent. As the communication module of CPPS, smart devices play an important role in data transmission, to ensure reliable and confident communication between the two layers. This paper presents a design for a secure and efficient smart devices utilizing anonymous security authentication and negotiation protocol supported by the identity-based cryptograph, elliptic curve cryptography, and digital signature algorithm are mainly used for that purpose. The security of the protocol is proved and validated under the random oracle model. The analysis show that the protocol has security performance such as bidirectional authentication, privacy protection, and replay attacks resistance; moreover, it has less computation and communication cost.
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