Design and Development of CTSR with Direct & Indirect Observations of MANET Applications

Prominent applications scenarios like military and commercial platforms mostly rely on wireless communications such as Wireless Sensor Networks (WSN), Mobile Ad-hoc Networks (MANET) and Vehicular Ad-hoc Networks (VANET). Based on the application scenario, the reliability of the nodes deployed has become more important for trust management evaluation. At the same time, trust management system should not be power killing, complex in terms of computation and processing capability. To convey a noticeable framework, we propose Collaborative Trust based Secure Routing protocol (CTSR) for observing direct and indirect trust values. Here we utilize two-way acknowledgement-based trust framework (2-ACKT) which requires lesser memory resources and minimizes the communication overhead. Our simulation setup for Mobile Adhoc Networks with 2-ACKT framework calculates trust value with both direct and indirect observations based on Bayesian inference and Dempster-Shafer Theory (DST) of uncertain reasoning approach respectively. Since the inception of DST for indirect observation in wireless networks trust values are effectively derived with data packets and control packets. The capability of DST to solve the problems with different reliability has flaws in certain areas where the nodes were subjected to disclose critical information like residual energy level and available bandwidth. And also common results derived from DST may lead to uncertain decisions. Considering all these factors we make few notable modifications in DST to enhance the security feature in 2-ACT.