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arXiv 1801.04066cs.LO
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符号时间观测等价性

Symbolic Timed Observational Equivalence

Vivek Nigam, Carolyn Talcott, Abrãao Aires Urquiza

摘要:

入侵者可以通过测量系统响应给定协议的某些请求所花费的时间来推断系统的属性,即通过利用时间侧信道。这些属性可以帮助入侵者区分系统是蜜罐还是具体系统,帮助他避开防御机制,或者跟踪侵犯其隐私的用户。观测等价性是用来验证两个系统是否可区分的技术机制。此外,有效的符号方法已被开发用于自动检查系统的观测等价性。本文介绍了一种新的定义的时间观测等效也区分系统根据其时间边通道。此外,由于我们的定义使用符号时间约束,因此可以通过使用SMT求解器来自动化。

英文摘要:

Intruders can infer properties of a system by measuring the time it takes for the system to respond to some request of a given protocol, that is, by exploiting time side channels. These properties may help intruders distinguish whether a system is a honeypot or concrete system helping him avoid defense mechanisms, or track a user among others violating his privacy. Observational equivalence is the technical machinery used for verifying whether two systems are distinguishable. Moreover, efficient symbolic methods have been developed for automating the check of observational equivalence of systems. This paper introduces a novel definition of timed observational equivalence which also distinguishes systems according to their time side channels. Moreover, as our definition uses symbolic time constraints, it can be automated by using SMT-solvers.

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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