VTrust: a trust management system based on a vector model of trust

  • Authors:
  • Indrajit Ray;Sudip Chakraborty;Indrakshi Ray

  • Affiliations:
  • Computer Science Department, Colorado State University, Fort Collins, CO;Computer Science Department, Colorado State University, Fort Collins, CO;Computer Science Department, Colorado State University, Fort Collins, CO

  • Venue:
  • ICISS'05 Proceedings of the First international conference on Information Systems Security
  • Year:
  • 2005

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Abstract

Trust can be used to measure our confidence that a secure system behaves as expected. We had previously proposed a vector model of trust [1]. In this work we address the problem of trust management using the vector model. We develop a new trust management engine which we call VTrust (from Vector Trust). The trust management engine stores and manages current as well as historical information about different parameters that define a trust relation between a truster and a trustee. We propose an SQL like language called TrustQL to interact with the trust management engine. TrustQL consists of a Trust Definition Language (TDL) that is used to define a trust relationship and a Trust Manipulation Language (TML) that is used to query and update information about trust relationships.