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arXiv 0705.2787cs.DB
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隐私保护数据发布的最坏情况背景知识

Worst-Case Background Knowledge for Privacy-Preserving Data Publishing

David J. Martin, Daniel Kifer, Ashwin Machanavajjhala, Johannes Gehrke, Joseph Y. Halpern

摘要:

最近的工作表明,在数据发布中推理隐私时,有必要考虑攻击者的背景知识。然而,在实践中,数据发布者并不知道攻击者拥有什么样的背景知识。因此,必须考虑最坏的情况。在本文中,我们发起了最坏情况下的背景知识的形式化研究。我们提出了一种语言,可以表达任何背景知识的数据。我们提供了一个多项式时间的算法来衡量在最坏的情况下,敏感信息的披露量,给定的攻击者最多有一个指定数量的信息在这种语言。我们还提供了一种方法来有效地清理数据,以便在最坏的情况下,披露的数量小于指定的阈值。

英文摘要:

Recent work has shown the necessity of considering an attacker's background knowledge when reasoning about privacy in data publishing. However, in practice, the data publisher does not know what background knowledge the attacker possesses. Thus, it is important to consider the worst-case. In this paper, we initiate a formal study of worst-case background knowledge. We propose a language that can express any background knowledge about the data. We provide a polynomial time algorithm to measure the amount of disclosure of sensitive information in the worst case, given that the attacker has at most a specified number of pieces of information in this language. We also provide a method to efficiently sanitize the data so that the amount of disclosure in the worst case is less than a specified threshold.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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