A New Key Establishment Method Based on Random Key Predistribution in Sensor Networks
Sujun Li, Boqing Zhou, Decheng Miao, Yun Cheng, Jie Wu · IEEE Internet of Things Journal · 2025
Sensor networks are often deployed outdoors and are more susceptible to various attacks. In order to protect communication between nodes, scholars have proposed key management schemes. The most popular among them is the key predistribution scheme. This scheme has the following contradiction: in order to improve security, the number of keys predistributed to nodes should be minimized as much as possible. However, as the number of predistribution keys decreases, the network may no longer be securely connected, resulting in wastage of nodes. In this letter, we propose a new key establishment method to address this issue. Analysis and simulation show that the proposed scheme can reduce the number of predistribution keys in the original schemes while ensuring secure network connectivity.