A Vector Model of Trust for Developing Trustworthy Systems

Abstract

AbstractAll security services rely to a great extent on some notion of trust. However, even today, there is no accepted formalism or technique for the specification of trust and for reasoning about trust. Secure systems have been developed under the premise that concepts like ”trusted” or ”trustworthy” are well understood, unfortunately without even agreeing to what ”trust” means, how to measure it, how to compare two trust values and how to combine two trust values. In this work we propose a new vector model of trust. Our model proposes the notion of different degrees of trust, differentiates between trust and distrust and formalizes the dependence of trust on time. We believe that our model will help answer some of the questions posed earlier.KeywordsIEEE Computer SocietyTrust RelationshipVector ModelDirect KnowledgeTrust DegreeThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.