Access Control at Triple Level: Specification and Enforcement of a Simple RDF Model to Support Concurrent Applications in Smart Environments

Smart environments support service innovation and in emerging approaches the information space involved is shared and accessible through simple primitives. Semantic web technologies play a crucial role in smart environments information representation, as they provide definitions allowing for interoperability at information level. The consistent interplay of multiple agents that concurrently access the knowledge base of an interoperable smart environment requires synchronization means like in traditional concurrent programming. This paper is focused on access control to synchronize concurrent access to shared resources of an RDF store in a multi-agent system. An RDF data model to semantically describe access rights at triple level is defined, an implementation to enforce this semantics on the RDF store is described and its performance are evaluated. Additional access control primitives can be implemented to support more complex behaviors.

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