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DATALOG with Constraints: A Foundation for Trust Management Languages
PADL, (2003): 58-73
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Trust management (TM) is a promising approach for authorization and access control in distributed systems, based on signed distributed policy statements expressed in a policy language. Although several TM languages are semantically equivalent to subsets of Datalog, Datalog is not sufficiently expressive for fine-grained control of structu...更多
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