Conflicts in Policy-Based Distributed Systems Management
IEEE Transactions on Software Engineering
Flexible support for multiple access control policies
ACM Transactions on Database Systems (TODS)
Concept-level access control for the Semantic Web
Proceedings of the 2003 ACM workshop on XML security
Authorization and Privacy for Semantic Web Services
IEEE Intelligent Systems
Driving and Monitoring Provisional Trust Negotiation with Metapolicies
POLICY '05 Proceedings of the Sixth IEEE International Workshop on Policies for Distributed Systems and Networks
Semantic access control for information interoperation
Proceedings of the eleventh ACM symposium on Access control models and technologies
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As web-based technologies mature, dynamic: graphs of interlinked resources are replacing hierarchical catalogs as means for storing and organizing information. Such graphs, or semantic: networks, often span multiple static: and dynamic: resources from a variety of sources. It Is often highly desirable to give users access only to parts of the semantic: network without breaking its logical continuity or consistency. Traditional access control models, such as mandatory, discretionary and role-based access controls, are ill-suited for these new resource structures. New models that allow users to specify access rights in terms of semantic relationships between various objects within semantic networks are needed. In this paper we discuss requirements for an access control model for semantic networks and present our approach and an initial implementation. We also describe end user tools for policy specification and assessment.