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This paper presents an ontology-driven secure XML content distribution scheme. This scheme first relies on a semantic access control model for XML documents that achieves three objectives: (1) representing flexible and evolvable policies, (2) providing a high-level mapping and interoperable interface to documents, and (3) automating the granting of fine-grained access rights by inferring on content semantics. A novel XML document parsing mechanism is defined to delegate document access control enforcement to a third party without leaking the document XML schema to it. The Encrypted Breadth First Order Labels (EBOL) encoding is used to bind semantic concepts with XML document nodes and to check the integrity of a document.

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