RDFacl: A Secure Access Control Model Based on RDF Triple

Jaehoon KIM  Seog PARK  

IEICE TRANSACTIONS on Information and Systems   Vol.E92-D   No.1   pp.41-50
Publication Date: 2009/01/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E92.D.41
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Application Information Security
database security,  access control,  authorization conflict,  RDF/OWL data,  Semantic Web,  

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An expectation for more intelligent Web is recently being reflected through the new research field called Semantic Web. In this paper, related with Semantic Web security, we introduce an RDF triple based access control model having explicit authorization propagation by inheritance and implicit authorization propagation by inference. Especially, we explain an authorization conflict problem between the explicit and the implicit authorization propagation, which is an important concept in access control for Semantic Web. We also propose a novel conflict detection algorithm using graph labeling techniques in order to efficiently find authorization conflicts. Some experimental results show that the proposed detection algorithm has much better performance than the existing detection algorithm when data size and number of specified authorizations become larger.