8 bits lightweight S-box with the Feistel structure

被引：0
|
作者：
Dong X. [1 ,2 ]
Zhang W. [2 ]
Xu C. [1 ]
机构：
[1] School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu
[2] Science and Technology on Communication Security Laboratory, Chengdu
来源：
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2021年 / 48卷 / 01期
关键词：
Differential uniformity; Feistel structure; Lightweight; Nonlinearity; S-box; Symmetric cryptography;
D O I：
10.19665/j.issn1001-2400.2021.01.008
中图分类号：
学科分类号：
摘要：
As a confusion component of the lightweight symmetric cryptographic algorithm,a lightweight S-box is the key to designing the lightweight symmetric cryptographic algorithm.In this paper,a new method for designing 8-bits lightweight S-boxes is proposed.The round logic operation in the S-boxes involves only 4 logic AND operations (single bits) and 4 logic XOR operations (single bits).After iterating 4 rounds,the differential uniformity of the 8-bits lightweight S-boxes is 16 and the nonlinearity is 96.Compared with the existing known methods,the 8-bits lightweight S-box designed by our method needs less hardware resources while gaining the best known cryptographic properties,such as the low differential uniformity and the high nonlinearity. © 2021, The Editorial Board of Journal of Xidian University. All right reserved.
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页码：69 / 75
页数：6
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