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Time-Scoped Searching of Encrypted Audit Logs

机译:加密审核日志的时间范围搜索

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摘要

In this paper we explore restricted delegation of searches on encrypted audit logs. We show how to limit the exposure of private information stored in the log during such a search and provide a technique to delegate searches on the log to an investigator. These delegated searches are limited to authorized keywords that pertain to specific time periods, and provide guarantees of completeness to the investigator. Moreover, we show that investigators can efficiently find all relevant records, and can authenticate retrieved records without interacting with the owner of the log. In addition, we provide an empirical evaluation of our techniques using encrypted logs consisting of approximately 27, 000 records of IDS alerts collected over a span of a few months.
机译:在本文中,我们探索了对加密审核日志的搜索的受限委派。我们将展示如何在这样的搜索过程中限制存储在日志中的私人信息的暴露,并提供一种将日志中的搜索委托给调查人员的技术。这些委派搜索仅限于与特定时间段相关的授权关键字,并为调查人员提供完整性保证。此外,我们表明调查人员可以有效地找到所有相关记录,并且可以在不与日志所有者交互的情况下对检索到的记录进行身份验证。另外,我们使用加密的日志对我们的技术进行了实证评估,该日志由在几个月内收集的大约27,000条IDS警报记录组成。

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