Multiple hash key pre-distribution scheme based on adjacent deployment in sensor networks

Security is vital to determine whether sensor networks can be fully developed or not, and key management is the most vital for network security. It is very important to establish pairwise key between any two sensors for the secure communication. A new key pre-distribution scheme (MHBAD) integrating 3-dimension grid model in adjacent deployment strategy with multiple hash algorithm is proposed. Compared with other schemes, simulation results show that the MHBAD scheme, which not only has the advantages of high security performance and low overhead, but also can substantially improve network connectivity, is very suitable for wireless sensor networks in which the nodes are resource-constrained and the network topology changes highly.