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Current rapid increasing implementations in data diversity, autonomy and dynamic privilege management, fine-grained access control in social networks have resulted in various challenges in applying existing access control models. We focus on this issue and propose a new social network access control model, RuleSN, using logical authorization language. The model provides high performance of authorization...
RBAC supports the principle of least privilege by the appropriate combination of roles assigned to users. However, the minimum role set is hard to find. Role hierarchy and inheritance can result in aggregating lots of permissions. To solve this problem, a task-constrained RBAC model is proposed in this paper, which presents four task-constraint rules to restrict the permission inheritance and role...
It is a big challenge to establish a dynamic access control model to secure applications in open and dynamic environment. The dynamic feature of an access control system is sometimes related with that of applications of open environment. This paper analyzes first the reason that causes the dynamic change of access control systems and then proposes a five-level access control architecture which describes...
Applications in the open and dynamic environment become more intelligent and complicated. To secure these applications is a big challenge. RBAC model, as a de facto standard in access control field, is widely used in many applications. But the lack of dynamic and formal method to describe RBAC makes the model can't completely adapt to the open and dynamic environment. To solve this problem, we introduce...
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