A research of SPINS based on identity authentication for wireless sensor networks

The limited resources, being located in the unattended environment, and the dynamic change of topology, these bring about big challenges for the communication security of wireless sensor networks. The security protocol framework-SPINS adopts multiple-key protocol, which can achieve the confidentiality, authentication, integrity and freshness during the data communication process, and have a relatively low communication cost. However after the sensor nodes being spread and deployed, if the shared master key between node and base station was divulged, the entire network security will be affected. This paper introduces the Schnorr identity authentication to improve SPINS, and give a security protocols for wireless sensor networks based on identity authentication. The analysis shows that the improved protocol can effectively prevent the security problem caused by divulging the shared master key. Meanwhile it is beneficial to find the adversary nodes in the network, and to guarantee the effective communication between nodes in the network.