Research On Key Management Scheme For Wireless Sensor Network

Wireless sensor networks (WSN) have an impact on the way of human beings’life. The reason is that they can be deployed in many fields which current typicalnetwork can not. Such as military, environmental monitoring, traffic management,health monitoring, space exploration, etc. while WSN is often deployed in untouchedand uncontrolled complex environment, thus faced with a variety of sensor networksecurity threats. It is vulnerable and the confidential information contained in the nodecan be exposed to the attacker completely. Therefore, the security of WSN is animportant part of WSN research areas, and the management of key is the core of WSNsecurity.Firstly, give a simple introduction of the development history of WSN, thestructure and features of WSN. And analysis of the security problems faced by WSN.Secondly, give a simple comparison and analysis of several typical schemes of keymanagement of WSN. Finally, combined with key pre-distribution technology andscheme one uses the convertible ternary polynomial to establish inter-nodecommunication and introduce the key distribution node of cluster network keydistribution improving the security threshold of network. Moreover, decoding thesensor node key is impossible because the node key uses one-way to deal with Hashfunction. The analysis results show that this scheme has improved the security ofnetwork and the survivability and scalability of node. And also reduces the storageand computation of sensor common nodes. Moreover, by studying polynomial and LUmatrix combining clustering key management scheme, scheme two to improves thesafety threshold. The application of matrix can effectively improve the connectivitybetween the cluster head node, so as to realize the safety and efficiency of WSNconnectivity between networks.