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SaaS (Software as a Service) deliver software as a service over the Internet, eliminating the need to install and run the application on the customers' own computers and simplifying maintenance and support. Access control is an important information security mechanism, according to user identity and the attribution of a predefined group of users to restrict access to certain information items, and...
Traditional trust models are based on reputation which is only a numerical value. Therefore, it is not fit for fine-grained access control which is needed in many online applications. Towards this problem, a novel trust model based on temporal historical data for access control is proposed. It could provide flexible method for users to customize specific access control rules. A policy language is...
As enterprise systems, Grids, and other distributed applications scale up and become increasingly complex, their authorization infrastructures--based predominantly on the request-response paradigm--are facing the challenges of fragility and poor scalability. We propose an approach where each application server recycles previously received authorizations and shares them with other application servers...
Traditional authorization mechanisms based on the request-response model are generally supported by point-to-point communication between applications and authorization servers. As distributed applications increase in size and complexity, an authorization architecture based on point-to-point communication becomes fragile and difficult to manage. This paper presents the use of the publish-subscribe...
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