A Strong Key Pre-distribution Scheme for Wireless Sensor Networks

Key agreement is paramount for wireless sensor networks (WSNs) security. Many key pre-distribution schemes have been developed to establish pairwise keys for WSNs. In WSNs, node capture attack is the most serious attack. And existing scheme can not offer strong resilience against node capture attack. In order to improve the resiliency of against sensor nodes capture, this paper proposes an improved key-distribution scheme, which uses Hash function to stop an adversary to get information of non-compromised sensor nodes from the compromised sensor nodes. The proposed scheme can provide the best resilience against sensor nodes captured and the probability of links between any sensor nodes are compromised is zero after pairwise keys establishment.