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Showing 1 to 17 of 17 for “"RBAC"”.
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Distributed RBAC for subscription-based remote network services
… of authentication delegation and distributed RBAC (DRBAC) to support fine granular access control across multiple autonomous resource sites and subscribing sites. The DRBAC model extends the RBAC model to a distributed environment. A prototype system based on the concepts of authentication …
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SIREN : a SQL-based implementation of role-based access control (RBAC) for enterprise networks
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Semantic role-based access control
… semantic ontological role-based access control (RBAC) reasoning processes. These processes infer user authorisations according to a set of role permission and denial assignments, together with user role assignments. The first process, SO-RBAC (Semantic Ontological Role-Based Access Control) uses …
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Efficient Automated Security Analysis of Complex Authorization Policies
… in the literature for Role-Based Access Control (RBAC) policies. RBAC is a security model for access control that has been widely adopted in real-world applications. Although RBAC simplifies the design and management of policies, modifications of RBAC policies in complex organizations are …
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Dynamic Role Lease Authorization Protocol for a Distributed Computing System
… is required. Role Based Access Control (RBAC) models have been demonstrated to be an effective and efficient approach for an administrator to manage accesses in a computing system. Much has been done to adapt the RBAC concept to Grids and focus on the authorization and verification of the …
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Exploring Dynamic Constraint Enforcement and Efficiency in Access Control
… and the application. Role based access control (RBAC) employs restrictions on the activation of roles and the exercise of permissions by individuals for enforcing the constraints. However, whether a constraint specification correctly enforces a given dynamic policy is an open research question. …
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Privacy, Access Control, and Integrity for Large Graph Databases
… framework under role-based access control (RBAC) policy constraints is proposed. The design of such a framework poses a trade-off problem, which is proved to be NP-complete. Novel heuristic solutions are provided to solve the constraint problem. To the best of our knowledge, this is the …
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Privacy Preserving Enforcement of Sensitive Policies in Outsourced and Distributed Environments
… a policy-based Role-Based Access Control (RBAC) mechanism, where users are assigned roles, roles are assigned permissions and users execute permissions if their roles are active in the session maintained by service providers. Finally, we offer the full-fledged RBAC policies by incorporating …
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Access Control Frameworks For Rapidly Evolving Business Enterprises
… and dynamic user-role assignments for the RBAC model. A novel aspect of this work is the agile adaptation of RBAC-based access control policies to changes in organizational needs, while reducing the burden of security administration. </p> <p> Another important challenge we address in this …
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Umfassendes Autorisierungsmanagement
Rollenbasierte Zugriffskontrollsysteme (RBAC) sind als Basis fü̈r ein effizientes Autorisierungssystem weit verbreitet. Diese Arbeit beschreibt einen Modellierungsansatz, der eine Identitä̈ts-, eine Struktur-, eine Anwendungs- und eine Organisationssicht voneinander trennt, um so zu einer …
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Model-Based Analysis of Role-Based Access Control
… automatically fixing role-based access control (RBAC) that does not require users to write code or queries themselves. To this end, we use two UML profiles and associated OCL constraints that provide the modelling and analysis features. We propose a taxonomy of OCL constraints and use it to …
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Secure platforms for enforcing contextual access control
… a given context and then extend the traditional RBAC model by incorporating these proximity constraints. Trusted enforcement of contextual access control requires that the underlying platform be secured against various attacks such as code reuse attacks. To mitigate these attacks, we propose a …
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A scenario-based technique to analyze UML design class models
… System model and a Generalized Spatio-Temporal RBAC model. The two demonstration case studies show how the technique can be used to analyze the inconsistencies between UML design class models and scenarios. We performed a pilot study to evaluate the effectiveness of the Scenario-based UML Design …
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Uma metodologia para controle de acesso granular em sistemas de banco de dados relacionais open source
… de banco de dados relacionais como o DAC, MAC e RBAC. Além disso, foram abordados o conceito de controle de acesso granular aos dados bem como os principais mecanismos utilizados no mercado. Após isto, são analisados alguns estudos que apresentam alternativas para o problema do controle de acesso …
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An Access Control Model for NoSQL Databases
Current development platforms are web scale, unlike recent platforms which were just network scale. There has been a rapid evolution in computing paradigm that has created the need for data storage as agile and scalable as the applications they support. Relational databases with their joins and …
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Privacy-Aware Risk-Based Access Control Systems
… to existing access control models such as RBAC and ABAC and that it can be realized using a declarative policy language with a number of advantages including usability, flexibility, and scalability. 4. We evaluate our approach using several industrial relevant use cases, elaborated to meet …