Hardware Trojan detection by differential side-channel analysis (DDSA)

Hardware Trojan Horse (HTH) attack has emerged as a major security threat of the integrated circuit. Previous work shows that Side-Channel Analysis (SCA) has been a promising HTH detection approach. However, these techniques suffer from decreased sensitivity toward small Trojans, especially because of the large process variations present in the modern nanometer technique. In this paper, we use a technique borrowed from differential power analysis (DPA), a method of cryptanalysis, to solve this problem. Detection of Differential Side-channel Analysis (DDSA) not only has a strong ability to suppress noise but also inhibits the impact of process variations. Experimental results show that, as a signal processing technique, the DDSA approach is a more efficient hardware Trojan detection method than the (Principal Component Analysis) PCA.