Hardware Trojan Detection Based on Ring Oscillator

Aimed at the problem that the traditional side channel detection model is easily influenced by the process variation, a detection method integrated in the circuit is proposed. This method converts the signal which is difficult to be directly measured in the circuit into an intuitive quantization value of output, and through denoise method, dimension reduction, classification algorithms to achieve the detection of hardware Trojan. Compared with traditional side channel detection methods, the most prominent feature of this detection method is:(1) effectively avoid the influence of process variation; (2) Trojans can detect the presence of Trojans without activation; (3) achieve the location of the Trojan's position. FPGA experiments against RS232 hardware Trojan circuit on Trust-hub demonstrate that, this method can significantly improve the detection result about Trojan.