An Introduction to Authorization Conflict Problem in RDF Access Control

Authors:
Jaehoon Kim;Kangsoo Jung;Seog Park
Affiliations:
Department of Computer Science, Sogang University, Seoul, Korea 121-742;Department of Computer Science, Sogang University, Seoul, Korea 121-742;Department of Computer Science, Sogang University, Seoul, Korea 121-742
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

In this paper, related with RDF security, we introduce an RDF triple based access control model considering explicit and implicit authorization propagation. Since RDF Schema represents ontology hierarchy of upper and lower classes or properties, our access control model supports the explicit authorization propagation where an authorization specified against an upper concept is propagated to lower concepts by inheritance. In addition, we consider the implicit authorization propagation where an authorization specified against an lower concept is propagated to upper concepts by RDF inference. RDF Semantics, which is recommended by W3C, guides some primary RDF inference rules related with subClassOf and subPropertyOf where lower concepts are interpreted into upper concepts. Based on these two contrary propagations, we introduce an authorization conflict problem in RDF access control.