A Novel Method of Correlation Power Analysis on SM4 Hardware Implementation

摘要

SM4 is a 128-bit block cipher used in the WAPI (Wireless LAN Authentication and Privacy Infrastructure) standard for protecting data packets in WLAN. This paper proposes a novel method of CPA (Correlation Power Analysis) on SM4 based on chosen-plaintext. Using SM4 as target algorithm, Sakura-G FPGA board as hardware verification platform, we only collect 1000 power consumption waveforms to obtain the first round key of SM4 successfully, significantly lowering the number of power consumption waveforms used in regular CPA.