1. Introduction
Having a metric for making informed decisions is important in ad-hoc networks deployable in the military environment as well as in disaster management applications. For example, consider the scenario where a terrorist attack has taken place. The First Responder System has been rapidly deployed using ad-hoc networks, and coordination between the constituents of the responder and rescue systems has been initiated. Trust is very important here because an attack has already taken place, and now the adversary may try to destroy the relief operations by compromising the first responder system. As another example, consider the scenario of a multi-national military force deployed in a war zone. The different constituents of the force should be able to effectively communicate with each other without the risk of information compromise [1]. Trust is the most important factor in such situations to make decisions regarding whom to communicate with.