Storage Security in Vanet Using Cognitive Radio

The technique of using watchdog is a fundamental building block to many trust systems that are designed for securing wireless sensor networks (WSNs). Watchdog technique is used to identify and monitor the malicious node in network. This technique is also used for trust behavior collection, hence gets a very good performance in guarding data sensing and multi-hop routing. It is proved as a very effective approach to build up WSNTS's foundations. However, this kind of technique requires much energy and hence decreases the lifespan of WSN. The inefficient use of watchdog implementation in existing trust systems lead me to propose an optimization method for energy consumption of watchdog and making it dynamic, while keeping a sufficient level system security. In the proposed method dynamic watchdog optimization method is used. DBP algorithm is used and AODV protocol is used for dynamic routing. Through which a considerable amount of energy is saved. To