期刊论文

Lang Li

英文

Integration

0167-9260

2023

91

23-34

10.1016/j.vlsi.2023.02.013

This research is supported by the Hunan Provincial Natural Science Foundation of China( 2022JJ30103 , 2022JJ50016 ), “the 14th Five-Year Plan” Key Disciplines and Application-oriented Special Disciplines of Hunan Province(Xiangjiaotong [2022] 35), the Science and Technology Innovation Program of Hunan Province(2016TP1020), Open fund project of Hunan Provincial Key Laboratory of Intelligent Information Processing and Application for Hengyang Normal University(2022HSKFJJ011).

本校为第一机构

The development of ARX-based lightweight block ciphers has been plagued by the difficulty of theoretical security analysis. SAND solves this problem better by obtaining an equivalent representation based on a synthetic S-box. This paper analyzed SAND in terms of diffusivity and found that it can be optimized. SAND has the issue of slow diffusion after the initial plaintext and key are all 0. On the other hand, it takes at least 11 rounds for SAND to reach full diffusion without AddRoundKey. Thus, this paper proposes a high-diffusion architectur...