Novel Controller for Dummy Rounds Scheme DPA Countermeasure

Abstract

In our previous work, we developed the Dummy Rounds countermeasure to protect the hardware design against side-channel attacks. The scheme employs hiding in time and hiding in consumption. After several improvements of the data path, the leakage has been minimized significantly. In this paper, we present the enhancement of the Dummy Rounds controller. This enhancement enables further reduction of the leakage. We tested the method on PRESENT cipher implemented in the Sakura-G board. The design was evaluated using Welch’s t-test.