A Semantic-Aware Ontology-Based Trust Model for Pervasive Computing Environments

  • Authors:

  • Mohsen Taherian;Rasool Jalili;Morteza Amini

  • Affiliations:

  • Network Security Center, Department of Computer Engineering, Sharif University of Technology, Tehran, Iran;Network Security Center, Department of Computer Engineering, Sharif University of Technology, Tehran, Iran;Network Security Center, Department of Computer Engineering, Sharif University of Technology, Tehran, Iran

  • Venue:
  • ATC '08 Proceedings of the 5th international conference on Autonomic and Trusted Computing
  • Year:
  • 2008

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Abstract

Traditionally, to handle security for stand-alone computers and small networks, user authentication and access control mechanisms would be almost enough. However, considering distributed networks such as the Internetand pervasive environments, these kinds of approaches are confronted with flexibility challenges and scalability problems. This is mainly because open environments lack a central control, and users in them are not predetermined. In such ubiquitous computing environments, issues concerning security and trust become crucial. Adding trustto the existing security infrastructures would enhance the security of these environments. Although many trust models are proposed to deal with trust issues in pervasive environments, none of them considers the semantic relations exist among pervasive elements and especially among trust categories. Employing Semantic Webconcepts, we propose a computational trust model based on the ontologystructure, considering the mentioned semantic relations. In this model, each entity can calculate its trust in other entities and use the calculated trust values to make decisions about granting or rejecting collaborations. Using ontology structure can make the model extendible to encompass other pervasive features such as context awarenessin a simple way.