Abstract
In this paper, we note that the hardware Trojans that leak information through the unspecified output pins are difficult to detect by functional testing or side-channel signal analysis. To solve this problem, we propose a feature matching method based on information flow tracking at high abstraction level. Experimental results show that our method can successfully identify the above-mentioned Trojans from Trust-hub, DeTrust, and OpenCores in less than 20 ms, showing significantly lower time complexity compared with the existing works.
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