电网SCADA系统中传感器认证的硬件随机编码

Kevin Hutto, S. Grijalva, V. Mooney
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引用次数: 1

摘要

监控和数据采集(SCADA)系统在关键电网基础设施中得到广泛应用。现代SCADA系统已被证明容易受到网络安全攻击,需要改进安全原语,以防止来自敌对方的不必要影响。SCADA系统的一个弱点是现场液位传感器的完整性,这些传感器为主站的控制决策提供了必要的数据。本文提出了一种轻量级硬件方案,通过将模数转换器和置换发生器作为单个集成电路组合在一起,为SCADA传感器提供推断认证。通过这种方法,我们在传感时对关键传感器数据进行编码,使得未编码的数据永远不会存储在内存中,增加了软件攻击的难度。我们通过实验展示了我们的设计如何在SCADA系统的现场级别阻止软件和硬件虚假数据注入攻击。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hardware-Based Randomized Encoding for Sensor Authentication in Power Grid SCADA Systems
Supervisory Control and Data Acquisition (SCADA) systems are utilized extensively in critical power grid infrastructures. Modern SCADA systems have been proven to be susceptible to cyber-security attacks and require improved security primitives in order to prevent unwanted influence from an adversarial party. One section of weakness in the SCADA system is the integrity of field level sensors providing essential data for control decisions at a master station. In this paper we propose a lightweight hardware scheme providing inferred authentication for SCADA sensors by combining an analog to digital converter and a permutation generator as a single integrated circuit. Through this method we encode critical sensor data at the time of sensing, so that unencoded data is never stored in memory, increasing the difficulty of software attacks. We show through experimentation how our design stops both software and hardware false data injection attacks occurring at the field level of SCADA systems.
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