A Hybrid Key Management Scheme for Wireless Sensor Network

With the rapid development of the Internet of things (IoT), the wireless sensor network (WSN) as the most fundamental layer of the network is widely applied to the IoT, and more researchers focus on the security of WSN. Intrusion Detection System (IDS) is an important element in the security of computer system and smart devices. In this paper, a key management scheme which designed for WSN and based on area management is proposed under the premise that the system has IDS, and the scheme divides network into a number of non-overlapping hexagonal areas. In our scheme, two different key management modes are used for inter-regional and intra-regional communication respectively, and the certificates and keys of gateway node and cluster-head node can be efficiently managed by introducing the security gateway. The scheme not only can reduce the complexity of computation and storage effectively, but also improve the communication security and network connectivity.