A DPA resistant dual rail Préchargé logic cell

This paper presents a novel differential pass-transistor precharge logic (DPPL) based on the complementary pass-transistor logic (CPL). In the aspect of circuit-level countermeasure, the power consumption of DPPL is more constant. The DPPL also solves the problem of early propagation effects (EPE) effectively and has a relatively small area overhead compared to the wave dynamic differential logic (WDDL). The power constancy and DPA resistant capability of DPPL are evaluated by SPICE simulation in this paper. The results show that the power constancy and DPA resistant capability of DPPL are superior to WDDL.