基于工艺参数扰动特性的硬件木马隐蔽性研究

Research on Hardware Trojan Concealment Based on Parameter Variation

摘要:

提出了一种增强硬件木马隐蔽性的新思想,通过模拟集成电路老化过程中工艺参数之一阈值电压V_th的扰动变化对电路性能的影响,将木马隐藏于由V_th引起的工艺参数扰动下,降低由木马引起的功耗泄漏,进而造成大部分基于功耗分析的木马检测方法失效；在Hspice仿真环境下增加阈值电压V_th的量由10%变化到80%,相对的电路功耗泄漏减少量增加,此结果验证了所设计理念的有效性。

Abstract:

The new idea to enhance the concealment is proposed. By intentionally age the embedded hardware Trojan gate and reduce its leakage power to the greatest extent, the external variation caused by the hardware Trojan is hidden in the presence of parameter variation V_th. Furthermore, it would be difficult to detect via leakage power measurements. By increasing V_th from 20% to 80% in Hspice, the decrement of leakage power increases relatively and the validity of the proposed idea is validated.