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The paper presents Relation Based Access Control RelBAC, a model and a logic for access control which models communities, possibly nested, and resources, possibly organized inside complex file systems, as lightweight ontologies, and permissions as relations between subjects and objects. RelBAC allows us to represent expressive access control rules beyond the current state of the art, and to deal with...
As the number and sophistication of on-line applications increase, there is a growing concern on how access to sensitive resources (e.g., personal health records) is regulated. Since ontologies can support the definition of fine-grained policies as well as the combination of heterogeneous policies, semantic technologies are expected to play an important role in this context. But understanding the...
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