一种对称算法的掩码方法分析  

Analysis of Mask Method for a Symmetric Algorithm

作　　者：钟名富 ZHONG Mingfu(Shanghai Lingjing Quantum Technology Co.,Ltd.,Shanghai 200122,China)

机构地区：[1]上海领晶量子科技有限公司,上海200122

出　　处：《集成电路应用》2023年第6期26-27,共2页Application of IC

摘　　要：阐述分组算法在各行各业得到了广泛的使用,尤其是在信息安全领域的智能卡或其他密码设备中上,而使用差分功耗攻击(DPA)进行分析,对分组密码算法的使用构成了严重的威胁,因此,研究对称算法的侧信道防护技术具有重要的理论意义和实用价值。目前提出的很多掩码方案都是基于特定的算法或者算法的某一个部分,很难把掩码方案进行推广到其他的对称算法。本文提出的一种对称算法的掩码方法,可推广至目前主流的对称算法,通过对S盒相同方式的改造,以及对明文和密钥的随机掩码,能达到整个算法的全掩码效果,从而可以抵御DPA攻击。This paper expounds the block cipher algorithm has been widely used in all walks of life.especially attacks on smart cards or other Cryptographic devices in the field of information security.It is a serious threat that with using a differential power attack(DPA).Therefore,the study of resist the attack becomes practical and valuable.Many countermeasures based on a particular algorithm or a part of the algorithm have been proposed,but it is difficult to generalize the scheme to other block cipher algorithms.This paper proposed a mask scheme which can be generalized to the current popular block cipher algorithms,Through the transformation of the s box in the same way,as well as masking plaintext and key with random datas,we can achieve full masking to the whole algorithm,which can resist the DPA attack.

关 键 词：分组密码算法 差分功耗分析攻击 S盒 掩码 

分 类 号：TN918[电子电信—通信与信息系统]