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- W2108243027 abstract "In a distributed environment where users and resources are dispersed, security policies often require a more complex control mechanism, for access authorization. Authorization for a subject accessing objects depends not only on its normal access rights but also on its access history and interaction with other subjects. In this paper, frequently desirable multilevel exceptions are systematically categorized and it is shown that many state-dependent security policies are actually examples of these multilevel exceptions. An effective access control model based on Boolean expressions of classified categories is proposed to enforce all the multilevel exceptions in a uniform and elegant way." @default.
- W2108243027 created "2016-06-24" @default.
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- W2108243027 date "2002-11-19" @default.
- W2108243027 modified "2023-09-23" @default.
- W2108243027 title "Modeling complex access control policies in distributed systems" @default.
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- W2108243027 doi "https://doi.org/10.1109/ftdcs.1995.525010" @default.
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