期刊论文

Lang Li

英文

Integration

0167-9260

2022

87

221-230

10.1016/j.vlsi.2022.07.011

This research is supported by the Postgraduate Scientific Research Innovation Project of Hunan Province (No. CX20201154 ), the Hunan Provincial Natural Science Foundation of China ( 2022JJ30103 , 2022JJ50016 ), the science and technology innovation Program of Hunan Province ( 2016TP1020 ), Application-oriented Special Disciplines , Double First-Class Univer-sity Project of Hunan Province ( Xiangjiaotong [2018] 469 ).

本校为第一机构

Lightweight block ciphers are important for implementing security services on constrained devices today. In this paper, we propose a novel ultra-lightweight block cipher DULBC based on a dynamic SPN structure. The round function of DULBC adopts an unfixed F-function and a bit-based permutation. The choice of the F-function depends on 2 bits of the round keys. This means the encryption process of the cipher is uncertain and its security is greatly improved. Also, a strong 4 × 4 S-box with fewer logic gates is proposed, which costs low hardware ...