NBK: A Novel Neighborhood Based Key Distribution Scheme for Wireless Sensor Networks

Location information has been found useful in the design of key predistribution schemes in wireless sensor networks (WSNs). In this paper, a novel key management scheme based on location is proposed to enhance the security of the wireless sensor networks. We get the idea from the previous location-based key (LBK) scheme but here the location of a sensor node is described by its neighbors´ logical identifiers (IDs). Through an improved authentic process between the sensor nodes, no other special infrastructures are needed to establish pair-wise keys. Further more, the scheme has a bigger probability of key establishment with a lower storage overhead, and it is suited for large scale wireless sensor networks.