Improved Polynomial Key Predistribution Scheme for Clustered Sensor Network
Nanrun Zhou · Jisuanji gongcheng · 2012
An improved polynomial key predistribution scheme is proposed for clustered sensor networks.The communication keys among cluster head nodes are obtained according to the symmetric property of two-parameter 4th-order polynomial,which solves the threshold security problem and makes the node overheads lower.The communication keys between the cluster head node and its common nodes are built with little communication after all the nodes are deployed,the authentication mechanism guarantees the security during communication keys establishment.It indicates that the scheme appears to be connective and secure,simultaneously makes the overheads of nodes low.It is shown that addition and revocation of the nodes are feasible in the scheme.