A Framework for Fine-Grained Access in Semantic Web Services by using Policy-Based Semantic Access Control

A semantic access control mechanism is used to provide access permission to the authorized users. Some access control models think about the rich semantic relations between the requested and the availing services. They will not filter out the services that do not met both the service providers’ policies as well as the users’ policies, because they offer only coarse-grained access. To solve this problem, a new framework is proposed. The framework consists of two separate Ontology, namely service ontology and policy ontology, to maintain the semantic information of policies that are submitted by users and service providers and the semantic information of services, a service locator for identifying the exact services and an access control engine for offering access to the users. The framework is implemented. Its performance is analyzed using precision, recall and F-score measures. Hence it proves that the framework is effectual in providing fine-grained web services using policy based semantic access control.