Research on Pairwise Key Establishment for Cluster Heads in Sensor Networks

In hierarchical sensor networks, pairwise key path construction would make no sense for cluster heads as the security of those higher level nods depends on that of the normal ones along with the key path. Vector-based key pre-distribution in extended modulus is presented, along with corresponding nodepsilas collaborative scheme. Experiments show that the presented scheme does improve the probability of direct key establishment for cluster heads as it has much better performance on nodepsilas degree in key-sharing graph with approximate risk of key space compromise compared with MSKPD.