Key Management Scheme Based on Secret Sharing for Wireless Sensor Network

Wireless Sensor Networks (WSN) easily suffers various attacks because of the vulnerable environment, low computation capability, limited energy resources, and open communication channel. So the security of the key distribution and management for WSN is a basic requirement for its wide applications, so we propose a key management based on secret sharing scheme (KMSS)in WSN. KMSS make the best use of the advantages of secret sharing, which cannot only efficiently protect the whole network security but also extend survivability. Compared to previous works, the KMSS distributes keys can not only resist a certain number of compromising node but also keep resiliency of the node in one cluster. The KMSS provides various session keys, cluster-between key for base station (BS) and cluster heads (CH), the cluster-in key between the cluster head and member nodes. The KMSS dynamically generates different keys based on different polynomials from BS which can reduce the high probability of the common keys. The security analysis shows the KMSS can prevent coalition attacks effectively and reduce the energy consumption.