Leverage Emerging Technologies For DPA-Resilient Block Cipher Design

Emerging devices have been designed and fabricated to extend Moore's Law. While the benefits over traditional metrics such as power, energy, delay, and area certainly apply to emerging device technologies, new devices may offer additional benefits in addition to improvements in the aforementioned metrics. In this sense, we consider how new transistor technologies could also have a positive impact on hardware security. More specifically, we consider how tunneling FETs (TFET) and silicon nanowire FETs (SiNW FETs) could offer superior protection to integrated circuits and embedded systems that are subject to hardware-level attacks - e.g., differential power analysis (DPA). Experimental results on SiNW FET and TFET CML gates are presented. In addition, simulation results of utilizing TFET CML on a light-weight cryptographic circuit, KATAN32, show that TFET-based current mode logic (CML) can both improve DPA resilience and preserve low power consumption in the target design. Compared to the CMOS-based CML designs, the TFET CML circuit consumes 15 times less power while achieving a similar level of DPA resistance.