New design strategy for improving hardware Trojan detection and reducing Trojan activation time
New design strategy for improving hardware Trojan detection and reducing Trojan activation time
复制标题
改进硬件木马检测并减少木马激活时间的新设计策略
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
J. Plusquellic
中科院分区：
文献类型：
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作者：
H. Salmani;M. Tehranipoor;J. Plusquellic
近年来，集成电路和系统中的硬件木马已经成为无晶圆厂半导体行业和政府机构严重关注的问题。大多数先前提出的木马检测方法依赖于木马激活来观察故障输出或测量侧通道信号，例如瞬态电流或电荷。从认证的角度来看，触发硬件木马电路的时间是一个主要问题。本文分析了时间（i）在功能特洛伊木马程序中生成过渡和（ii）完全激活它们。提出了一种有效的虚拟触发器插入过程，以增加木马的活动。根据认证时间和电路拓扑，选择转换概率阈值，使得插入的伪触发器将适度地影响面积开销。在S38417基准电路上的仿真结果表明，该方法可以显著提高木马的活跃度，减少木马的激活时间，且面积开销可以忽略不计。
Hardware Trojans in integrated circuits and systems have become serious concern to fabless semiconductor industry and government agencies in recent years. Most of the previously proposed Trojan detection methods rely on Trojan activation to either observe a faulty output or measure side-channel signals such as transient current or charge. From the authentication stand point, time to trigger a hardware Trojan circuit is a a major concern. This paper analyzes time to (i) generate a transition in functional Trojans and (ii) fully activate them. An efficient dummy flip-flop insertion procedure is proposed to increase Trojan activity. Depending on authentication time and circuit topology, a transition probability threshold is selected so that inserted dummy flip-flops would moderately impact area overhead. The simulation results on s38417 benchmark circuit demonstrate that, with a negligible area overhead, our proposed method can significantly increase Trojan activity and reduce Trojan activation time.