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Detecting Information Leakage in Updating XML Documents of Fine-Grained Access Control

机译:在更新细粒度的访问控制的XML文档中检测信息泄漏

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To provide fine-grained access control to data in an XML document, XML access control policy is defined based on the contents and structure of the document. In this paper, we discuss confidential information leakage problem caused by unsecure-update that modifies contents or structures of the document referred by the access control policy. In order to solve this problem, we propose an algorithm that computes update constraints of a user on some data in the document under access control policy of the user. We also propose an algorithm that decides whether a given update request of a user against an XML document is an unsecure-update under the user's access control policy.
机译:为了提供对XML文档中数据的细粒度访问控制,基于文档的内容和结构定义XML访问控制策略。在本文中,我们讨论了由于不安全更新而导致的机密信息泄漏问题,这种不安全更新会修改访问控制策略引用的文档的内容或结构。为了解决这个问题,我们提出了一种算法,该算法根据用户的访问控制策略计算用户对文档中某些数据的更新约束。我们还提出了一种算法,该算法决定在用户​​的访问控制策略下,用户针对XML文档的给定更新请求是否为不安全更新。

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