Securing Wireless Sensor Network using Intelligent Techniques

In wireless sensor networks (WSNs), the sensor nodes transmit critical information over the network. Therefore security services such as authentication and pair wise key establishment between sensor nodes and mobile sinks are important. However, the problem of authentication and pair wise key establishment in sensor networks with mobile sinks is still a critical problem in the face of mobile sink replication attacks. In the basic probabilistic and q-composite key pre distribution schemes, an attacker can easily obtain a large number of keys by capturing a small fraction of the network sensor nodes. This makes it possible for an attacker to take control over the entire network. Thereby deploying a replicated mobile sink, preloaded with some compromised keys to authenticate and initiate data communication with any sensor node. To address this issue a general framework needs to be developed that permits the use of any pair wise key pre distribution scheme which requires two separate key pools one for the mobile sink to access the network and other for the pair wise key establishment between the sensors. Moreover, to detect such mobile sinks and replication attacks an intelligent agent is deployed at every level in the network. The agents play a major role and perform with the idea of knowledge base and rule manager.