Applying formal methods to an information security device: An experience report

J. Kirby, M. Archer, C. Heitmeyer
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引用次数: 17

Abstract

SCR (Software Cost Reduction) is a formal method for specifying and analyzing system requirements that has previously been applied to control systems. This paper describes a case study in which the SCR method was used to specify and analyze a different class of system, a cryptographic system called CD, which must satisfy a large set of security properties. The paper describes how a suite of tools supporting SCR-a consistency checker, simulator, model checker, invariant generator, theorem prover, and validity checker-were used to detect errors in the SCR specification of CD and to verify that the specification satisfies seven security properties. The paper also describes issues of concern to software developers about formal methods, e.g. ease of use, cost-effectiveness, scalability, how to translate a prose specification into a formal notation, and what process to follow in applying a formal method and discusses these issues based on our experience with CD. Also described are some unexpected results of our case study.
将形式化方法应用于信息安全设备:经验报告
SCR(软件成本降低)是一种正式的方法,用于指定和分析以前应用于控制系统的系统需求。本文描述了一个案例研究,其中使用SCR方法来指定和分析一个不同类型的系统,称为CD的密码系统,它必须满足大量的安全属性。本文描述了如何使用一套支持SCR的工具——一致性检查器、模拟器、模型检查器、不变量生成器、定理证明器和有效性检查器——来检测CD的SCR规范中的错误,并验证该规范是否满足七个安全属性。本文还描述了软件开发人员对形式化方法的关注问题,例如易用性、成本效益、可扩展性、如何将散文规范转换为形式化符号,以及在应用形式化方法时应遵循的过程,并根据我们使用CD的经验讨论了这些问题。此外,还描述了我们案例研究的一些意想不到的结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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