Trust Enhanced Authorization for Mobile Agents

摘要

Trust has been recognized as an important aspect for mobile agent security. In this paper, we develop a logic based trust model which enables the capturing of a comprehensive set of trust relationships to enhance the security of conventional access control mechanisms in a mobile based applications. We first discuss the notion of trust and its relevance to mobile agent security. Next we define a logic program based language to facilitate the modelling process. To enforce the security related trustworthy behaviours, we then define a. set of general rules to capture the semantics. Finally, the language is applied in a mobile agent context to demonstrate how the trust can be explicitly modelled and reasoned about to support better security decisions for the mobile agent based systems.