基于字级统计属性管理的硬件木马检测加速

He Li, Qiang Liu
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引用次数: 11

摘要

硬件木马植入已经引起了半导体行业和政府部门的严重关注。硬件木马通常在电路中与低转换位相关的罕见条件下被激活。损坏包括电路功能故障或重要信息泄露。以往对硬件木马检测的研究主要基于侧信道分析和木马激活。在检测过程中,激活时间长是一个主要问题。在本文中,我们提出了一种通过增加稀有比特的跃迁活度来有效加速木马激活的新方法。特别是,该方法通过控制信号字级统计特性(如改变信号的方差和自相关)来增加比特级转移活动。此外,通过分析各种数字信号处理(DSP)运算符(如加法器和乘法器)对信号传播的统计特性,该方法可以控制内部信号的统计特性,从而从电路的一次输入增强内部比特转移活动性。在几个电路上对所提出的方法进行了评估。结果表明,稀有比特的跃迁活性可显著提高166.7倍,木马激活时间可缩短121倍。
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Hardware Trojan detection acceleration based on word-level statistical properties management
Hardware Trojan insertion has raised serious concerns to semiconductor industry and government agencies. Hardware Trojan is usually activated under rare conditions associated with low transition bits in a circuit. The damage includes circuit functional failure or important information leakage. Previous research on hardware Trojan detection is mainly based on side-channel analysis and Trojan activation. Long activation time is a major concern during the detection process. In this paper, we propose a novel approach for efficiently accelerating Trojan activation by increasing the transition activity of rare bits. In particular, the proposed approach increases the bit-level transition activity by controlling signal word-level statistical properties, such as changing the variance and autocorrelation of the signal. In addition, by analyzing the signal propagation statistical properties through various digital signal processing (DSP) operators such as adders and multipliers, the proposed approach can control the statistical properties of internal signals and then enhance the internal bit transition activity from the primary input of the circuit. The proposed approach is evaluated on several circuits. The results show that the transition activity of rare bits can be dramatically increased by up to 166.7 times and Trojan activation time can be reduced by up to 121 times.
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