Controlling access to RDF graphs

Authors:
Giorgos Flouris;Irini Fundulaki;Maria Michou;Grigoris Antoniou
Affiliations:
Institute of Computer Science, FORTH, Greece;Institute of Computer Science, FORTH, Greece;Institute of Computer Science, FORTH, Greece;Institute of Computer Science, FORTH, Greece and Computer Science Department, University of Crete, Greece
Venue:
FIS'10 Proceedings of the Third future internet conference on Future internet
Year:
2010

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Abstract

One of the current barriers towards realizing the huge potential of Future Internet is the protection of sensitive information, i.e., the ability to selectively expose (or hide) information to (from) users depending on their access privileges. Given that RDF has established itself as the de facto standard for data representation over the Web, our work focuses on controlling access to RDF data. We present a high-level access control specification language that allows fine-grained specification of access control permissions (at triple level) and formally define its semantics. We adopt an annotation-based enforcement model, where a user can explicitly associate data items with annotations specifying whether the item is accessible or not. In addition, we discuss the implementation of our framework, propose a set of dimensions that should be considered when defining a benchmark to evaluate the different access control enforcement models and present the results of our experiments conducted on different Semantic Web platforms.