Trust in secure communication systems -the concept, representations, and reasoning techniques

Abstract

The purpose of communication is the exchange of information among agents. Whether an agent believes a message passed by others to be reliable depends on trust which the agent would put in the system supporting secure communications required. Indeed, every security system depends on trust, in one form or another, among agents of the system. Different forms of trust exist to address different types of problems and mitigate risk in certain conditions. This paper discusses the concept of trust in general, and intends to investigate modelling methodologies for describing and reasoning about trust and agent beliefs.