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Zaproponowano uogólniony model kontroli dostępu do usługowych systemów internetowych, uwzględniający różne kategorie kontekstu. Określono wpływ kontekstu na model, a także na architekturę systemu bezpieczeństwa. Podano przykład implementacji modelu i architektury bezpieczeństwa dla zestawu usług dotyczących e-uczelni i wstępnie oszacowano zalety takiego rozwiązania.
Constraints are considered to be the principal motivation for RBAC model. XACML profile for RBAC can not meet the need of expressing static and dynamic RBAC constraints well. We give the XACML syntax of common static and dynamic Separation of Duty constraints and cardinality constraints of RBAC. We also complement Role Enablement Authority to extend this profile in order to enforce these constraints.
We introduce the notion of obligation constraints in the context of access control systems. Such constraints requires that in order to have all permissions necessary to complete a sensitive task, the cooperation of at least a certain number of users is required. In this paper, we formally define the notion of obligation constraints, strict obligation constraints, and introduce the obligation satisfy...
In this paper, the features of access control in pervasive computing environment are summarized and the limitations of previous models are discussed. Then, a context-based and associated access control model is proposed, which integrates the principles of TBAC and RBAC and uses the environment context as a factor to reason role assigning and authority granting. The proposed model shows effectiveness...
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