Abstract:
The 128-bit SM4 algorithm is the first commercial cipher published by China,which is mainly used in wireless LAN.In order to improve the algorithm's resistance to differential power analysis attack,the additive masking is adopted to keep the SM4 cipher resistant to the first-order DPA.The simulation results show that the counteractive against differential power analysis attack is credible.In order to realize a small-area,low-power circuit of SM4 cipher,the PPRM architecture is adopted in the hardware implementation of SM4S-box.A power consumption of 0.74mW@10MHz using SMIC 0.18
μm technology is achieved,which is 70% less than that of the SM4S-Box in composite field.