Sensor authentication scheme for clustering routing protocols in wireless sensor networks

In wireless sensor networks (WSNs), hierarchical routing protocol is commonly used for energy efficiency. However, routing protocols without proper security suffer from many security vulnerabilities. Hence, in this paper, we propose a sensor authentication scheme during key establishment procedure based on clustering routing protocol. It authenticates lower level nodes by using temporal keys which are generated from higher level nodes. The simulation result shows that an authentication probability of member nodes maintains about 99.62 % during the whole network lifetime.