نتایج جستجو برای: Role-Based Access Control

تعداد نتایج: 5076952  

2008
Meriam Ben-Ghorbel-Talbi Frédéric Cuppens Nora Cuppens-Boulahia Adel Bouhoula

The paper presents revocation schemes in role-based access control models. We are particularly interested in two key issues: how to perform revocation and how to manage the revocation policy. We show how to deal with these two aspects in the delegation model based on the OrBAC formalism and its administration licence concept. This model provides means to manage several delegation types, such as...

Journal: :CoRR 2006
Jonathan K. Adams Basheer N. Bristow

Basic role based access control [RBAC] provides a mechanism for segregating access privileges based upon users' hierarchical roles within an organization. This model doesn't scale well when there is tight integration of multiple hierarchies. In a case where there is joint-tenancy and a requirement for different levels of disclosure based upon a user's hierarchy, or in our case, organization or ...

1998
Ravi S. Sandhu Qamar Munawer

Role-based access control (RBAC) has recently received a lot of attention due to its exibility, expressive power and simplicity in administration. In RBAC permissions are associated with roles and users are made members of roles thereby acquiring the associated permissions. Centralized management of RBAC in large systems is a tedious and costly task. An appealing possibility is to use RBAC itse...

2007
Faranak Farzad Eric S. K. Yu Patrick C. K. Hung

Role-Based Access Control (RBAC) is increasingly used for ensuring security and privacy in complex organizations such as healthcare institutions. In RBAC, access permissions are granted to an individual based on her defined roles. Much work has been done on the specification of RBAC models for enforcing access control; however, in order to arrive at appropriate choices of access control for par...

Journal: :CoRR 2013
Muhammad Umar Aftab Amna Nisar Asif Adeel Ashraf Burhan Gill

Institutional collaborative systems focus on providing the fast, and secure connections to students, teaching and non-teaching staff members. Access control is more important in these types of systems because different kind of users access the system on different levels. So a proper architecture must be there for these kinds of systems, for providing an efficient and secure system. As lot of wo...

Journal: :JSW 2015
Kui Liu Zhurong Zhou Qianguo Chen Xiaoli Yang

The traditional manual way of thesis management is increasingly satisfying the demand of thesis guidance and administrative management in the information age. To improve the traditional manual undergraduate thesis writing, guidance and administrative management process in Southwest University of China, a Role-based access control (RBAC) Workflow model for thesis management is developed. In the ...

Journal: :JSW 2013
Sylvia L. Osborn He Wang

Delegation in access control takes place in the presence of an access control model, when a user is unable to perform their administratively assigned permissions. In this paper, we discuss the meanings of the word “delegation” found in the literature, focusing on its use in access control. In the context of a rolebased access control model, we survey many possible ways in which delegation can b...

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