A Secure Mediator for Integrating Multiple Level Access Control Policies

Authors:
Isabel F. Cruz;Rigel Gjomemo;Mirko Orsini
Affiliations:
ADVIS Lab, Department of Computer Science, University of Illinois at Chicago,;ADVIS Lab, Department of Computer Science, University of Illinois at Chicago,;ADVIS Lab, Department of Computer Science, University of Illinois at Chicago,
Venue:
KES '08 Proceedings of the 12th international conference on Knowledge-Based Intelligent Information and Engineering Systems, Part II
Year:
2008

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Abstract

We present a method for mapping security levels among the components of a distributed system where data in the local sources are represented in XML. Distributed data is integrated using a semantic-based approach that maps each XML schema into an RDF schema and subsequently integrates those schemas into a global RDF schema using a global as view (GAV) approach. We transform the security levels defined on the XML schema elements of each local source into security levels on the triples of the local RDF schemas, which form a lattice. We show how the merged data in the global schema can be classified in different security classes belonging to the global partially ordered security graph.