现代信息科技2026，Vol.10Issue(12)：159-163,5.DOI:10.19850/j.cnki.2096-4706.2026.12.030
基于CPA的SMBA密码算法侧信道攻击
Side-channel Attack on SMBA Cryptographic Algorithm Based on CPA
摘要
Abstract
To evaluate the side-channel security of the SMBA block cipher algorithm in physical implementation,this article takes the whitening transformation stage of the algorithm as the attack target and designs and verifies a complete Correlation Power Analysis(CPA)attack scheme.Power consumption traces corresponding to 10 000 random plaintexts are collected during the unprotected physical implementation of the SMBA-128-128 algorithm.By guessing the encryption subkeys,the output of the whitening transformation is mapped to the Hamming weight model to construct the hypothetical power consumption.Finally,the Pearson correlation coefficient between the hypothetical power consumption traces and the real power consumption traces collected during the encryption process is calculated to complete the key identification.The experimental results show that the proposed CPA attack method can successfully recover the sensitive encryption subkeys of the SMBA-128-128 algorithm,proving that the unprotected physical implementation of the algorithm faces significant security risks against side-channel attacks.This provides a key experimental basis for the engineering deployment of side-channel protection for the algorithm.关键词
分组密码算法/SMBA算法/侧信道攻击/相关能量分析Key words
group cipher algorithm/SMBA algorithm/side-channel attack/correlation power analysis分类
信息技术与安全科学引用本文复制引用
谢泰荣..基于CPA的SMBA密码算法侧信道攻击[J].现代信息科技,2026,10(12):159-163,5.基金项目
广东省教育厅高校科研项目青年创新人才项目(2023KQNCX175) （2023KQNCX175）
