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• W2888191724 abstract "A Role-based Access Control (RBAC) mechanism prevents unauthorized users to perform an operation, according to authorization policies which are defined on the user’s role within an enterprise. Several models have been proposed to specify complex RBAC policies. However, existing approaches for policy enforcement do not fully support all the types of policies that can be expressed in these models, which hinders their adoption among practitioners. In this paper we propose a model-driven enforcement framework for complex policies captured by GemRBAC+CTX, a comprehensive RBAC model proposed in the literature. We reduce the problem of making an access decision to checking whether a system state (from an RBAC point of view), expressed as an instance of the GemRBAC+CTX model, satisfies the constraints corresponding to the RBAC policies to be enforced at run time. We provide enforcement algorithms for various types of access requests and events, and a prototype tool (MORRO) implementing them. We also show how to integrate MORRO into an industrial Web application. The evaluation results show the applicability of our approach on a industrial system and its scalability with respect to the various parameters characterizing an AC configuration." @default.
• W2888191724 created "2018-08-31" @default.
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• W2888191724 date "2018-09-03" @default.
• W2888191724 modified "2023-10-14" @default.
• W2888191724 title "Model-driven run-time enforcement of complex role-based access control policies" @default.
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• W2888191724 doi "https://doi.org/10.1145/3238147.3238167" @default.
• W2888191724 hasPublicationYear "2018" @default.
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