Certificateless key management in mobile Ad hoc networks

Combining certificateless signcryption protocol and hierarchical structure,a new key management agreement is proposed.In this scheme,public key certificates are not needed and every participant makes a public key himself.It greatly decreases the need of the ability for computation and storage of terminals,as well as communication cost for system key management.At the same time,the key generator center creates partial private keys for nodes,and then solves the key escrow problem in the identity-based cryptography.Nodes are divided into several autonomous communities based on cluster structure,which not only increases availability and scalability of networks,but also results in quick response to some emergency.