SPARQL query rewriting instrumented by access control model
Résumé
A possible way to enforce access control requirements when evaluating SPARQL queries is based on rewriting the queries so that their evaluation fulfills the access control policy. One may then define a new dedicated language to express access control policies for SPARQL. In this paper, we suggest a different approach based on a generic access control policy model in order to express the access control requirements. We present how to instrument the rewriting algorithm using a given security policy rules derived from the OrBAC model.