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- W1858329103 abstract "Controlled Query Evaluation (CQE) is an approach to enforcing confidentiality in information systems at runtime. At each query, a censor checks whether the answer to that query would enable the user to infer any information he is not allowed to know according to some specified confidentiality policy. If this is the case, the answer is distorted, either by refusing to answer or by returning a modified answer. In this paper, we consider incomplete logic databases and investigate the semantic ways of protecting a piece of information. We give a formal definition of such confidentiality policies, and show how to enforce them by reusing the existing methods for CQE." @default.
- W1858329103 created "2016-06-24" @default.
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- W1858329103 date "2007-01-01" @default.
- W1858329103 modified "2023-09-25" @default.
- W1858329103 title "Confidentiality Policies for Controlled Query Evaluation" @default.
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- W1858329103 doi "https://doi.org/10.1007/978-3-540-73538-0_1" @default.
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