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Research on Multi-Dimensional Role-Based Access Control Models

Author: ZhangYi
Tutor: WuYingZe；XuLei
School: Shenyang Institute of Aeronautical College
Course: Computer Software and Theory
Keywords: Role-based access control Multidimensional role Role component Model Authorization rules
CLC: TP393.08
Type: Master's thesis
Year: 2010
Downloads: 46
Quote: 0
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Abstract


Based on the model of role-based access control (RBAC) is an access control model widely used in theoretical and applied research. However, the RBAC applications in large-scale management information system, there are still users, roles, permissions management complexity and higher cost of operation and maintenance problems. The multidimensional semantics for roles in the RBAC system, this paper presents a role-based multi-dimensional access control model (MDRBAC). The main work is as follows: RBAC system, the role on behalf of the user groups usually in a management framework constitutes a multidimensional organizational structure, by the definition of the principle of minimum operating authority role, the role of the number of its connotation mixed multi kinds of semantics, and increase the complexity of system administration. To solve the above problem, the proposed multidimensional role-based access control model. Model the role of multiple properties of the user into the form of a component of the multi-dimensional role model given a defined role hierarchy, role limitation and role permissions assigned role component relationship. Makes the role of closer representation the user responsibilities within the organization model, the semantics of the role is clear, simplified model of the role of the management and distribution of competences. In MDRBAC, the mapping between roles and permissions based on the role component set. In this paper, the resource attribute predicate clause access to resources, role component corresponding resource access rights clause set given a collection of synthetic multidimensional role permissions set by the permissions of the role components. The the role component hierarchy partial order relationship can be drawn from the role set on the level of partial order relationship; role component collection on the definition of the role of restriction, synthetic multidimensional role and still meet the appropriate limit, to ensure the integrity of the model. In this paper, an application instance further validation of the proposed multi-dimensional role-based access control model; model gives instances of system resources and their access rights constraints, assign user roles, authorization role component of grammar rules and formal description methods (XML document formal definition). Designed and implemented the MDRBAC model management platform to support applications system administrators to define applications based access control elements of MDRBAC application systems assign permissions consistency check function and for dynamic checking role constraints limit standard functions.

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