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Attribute Based Access Control (ABAC) has gradually become a hot research topic in distributed systems. While frequent disclosure of subject attributes, resource attributes or environment attributes may lead to leaks of sensitive information. This article mainly focuses on protecting privacy of resource requester in the process of ABAC, and presents a trust based sensitive attributes protection mechanism which can disclose attributes through comparing resource requester's attribute sensitivity with resource provider's trust level. After experiments comparison with Beth model, we get a conclusion that this mechanism has higher accuracy, without violating resource requester's privacy. © Springer-Verlag 2013.

Protecting Sensitive Attributes in Attribute Based Access Control