Policy based Decentralized Group key Security for Mobile Ad-hoc Networks

The unique characteristics and constraints of MANET have made the traditional approach to security inadequate. With this view in mind decentralized group key management is taken into consideration. A novel structure of the node is proposed and each entity holds a secret share SSi of each node in cluster is controlled by its cluster head, the policy enforcer decides for the working of intelligent agent, which is assigned to do the management, which allows two or more parties to derive shared key as a function of information associated with the protocol and so no party can predetermine the resulting value. Group membership certificate is used for group authentication and by the use threshold key scheme secret data is transferred. The SSi of each node is calculated by use of Polynomial interpolation and cluster head key by modular arithmetic, and information is carried by the policy based agents named intelligent agents.