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Due to the open and distributed characteristics of web service, its access control becomes a challenging problem which has not been addressed properly. In this paper, we show how semantic web technologies can be used to build a flexible access control system for web service. We follow the Role-based Access Control model and extend it with credential(More)
The interacting entities in web service usually can’t be predetermined and may be in different security domains. To address the access authorization for unknown users across domain borders, access control of web service should be performed based on the domain-independent access control information but not the identities. In this paper, a context and(More)
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