Secure Robust Pressure based Routing for Underwater Acoustic Sensor Network.

The distinctive characteristics of Underwater Acoustic Sensor network, makes it highly susceptible to attacks. Effective and skilful interaction between the sensors and Autonomous Underwater Vehicles is required to actuate the communication in the network. In the existence of malicious nodes, this leads to critical security issues especially in pressure based routing protocols. Thus, an effective security scheme is indispensable for efficient data transmission. In this paper, the prime aim is to detect the virulent nodes in pressure routing by formulating Collaborative Entrapping Scheme (CES). It is observed that incorporating CES in the pressure based routing protocol effectively detects and prevents the virulent nodes from participating in the routing process, but introduces an overhead. To decrease the overhead due to the CES approach, in this paper, a fraction of data packet (Dfrac) only is used to indicate the successful reception which reduces the end to end delay. Simulation results indicate that the proposed Secure Pressure based Routing protocol shows performance improvement compared to the existing Depth Based and Hydro cast Routing protocols even in the presence of multiple malicious nodes. [ABSTRACT FROM AUTHOR]