Abstract
In this paper the possibility of representing of some types of role-based access control models by object-oriented discretionary access control model is considered. The role-based security model without hierarchy and the role-based security model with hierarchy with inheritance "from above" are considered. The permissions of the role-based access control model are represented as a set of pairs of object and access right. A hierarchy of classes of the object-oriented HRU model based on the role-based access control policy is constructed. Commands of the object-oriented HRU model corresponding to the reassignment of roles in the original role-based model are described.
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