An Efficient Security Mechanism for Data Reporting In Wireless Sensor Networks

Wireless sensor networks consist of a large number of small sensor nodes having limited computation capacity, restricted memory space, limited power resource, and short-range radio communication device. In these scenarios, sensor networks may suffer different types of malicious attacks. The adversaries can inject false data reports via compromised nodes and launch DoS attacks against legitimate reports. Recently, a number of filtering schema for removing false data report.But due to lack of strong filtering capacity and not support dynamic sensor networks The main objective of this application is to propose a dynamic en-route filtering scheme that addresses both false report injection and DoS attacks in wireless sensor networks. In our scheme, each node has a hash chain of authentication keys used to endorse reports; meanwhile, a legitimate report should be authenticated by a certain number of nodes. First, each node release its key to forwarding nodes. Then, after sending reports, the sending nodes disclose their keys, allowing the forwarding nodes to verify their reports. The Hill Climbing key release approach is used in this approach which ensures the nodes closer to data sources have stronger filtering capacity The DoS attacks can be solved with multipath routing to deal with the topology changes of sensor networks. The proposed filtering scheme can drop false reports earlier with a lower memory requirement, especially in highly dynamic sensor networks. Keywords-Data reporting, en-route filtering scheme, wireless sensor networks. I