Date Added: Dec 2011
In wireless network to protect the sensitive data Security has become one of the major issues for data communication over wired and wireless networks. Different from the past work on the designs of cryptography algorithms and system infrastructures, the authors will propose Key Distribution scheme for hierarchical WANs with renewable network devices. Applying the key distribution in the dynamic routing algorithm it will be provide the more scalability and security in the wireless networks. The security in wireless sensor networks. Current proposals for routing protocols in sensor networks optimize for the limited capabilities of the nodes and the application specific nature of the networks, but do not consider security.