基于秘密共享的抗DPA攻击分组加密算法  

Block encryption algorithm based on secret sharing to resist DPA attack

作　　者：徐厦杰 刘振钧[1] XU Xia-jie;LIU Zhen-jun(The 30th Institute of China Electronics Technology Group Corp,Chengdu 610041,China)

机构地区：[1]中国电子科技集团公司第三十研究所,成都610041

出　　处：《信息技术》2021年第2期92-97,共6页Information Technology

摘　　要：随着分组加密算法的广泛使用,抗DPA攻击的需求越来越大。文中根据秘密共享的思想,提出了一种基于秘密共享分组加密算法实现方案。该方案将输入分为两个独立的分组,并且设计了满足秘密共享要求的复合域共享S盒,然后将两个分组输入到改进的复合域共享S盒中进行运算,并且提出了对于随机掩码的优化。通过分析,该方案满足秘密共享的正确性、不完整性以及均匀性,能够抵抗一阶DPA攻击,并且极大地减少了随机掩码的数量。With the widespread use of block encryption algorithm,the demand for resistance to DPA attacks is increasing.According to the idea of secret sharing,this paper proposes an implementation scheme based on secret sharing block encryption algorithm.This scheme divides the input into two independent groups,and designs a composite domain sharing S-box to meet the requirements of secret sharing,and then the calculation is performed with the two groups of inputs,in the improved composite domain secret sharing S-box,and proposes an optimization for the random mask.Through analysis,this scheme satisfies the correctness,incompleteness and uniformity of secret sharing,can resist first-order DPA attacks,and greatly reduces the number of random masks.

关 键 词：分组算法 DPA攻击 秘密共享 S盒 

分 类 号：TN918.4[电子电信—通信与信息系统]