计算机应用研究2024，Vol.41Issue(11)：3401-3408,8.DOI:10.19734/j.issn.1001-3695.2024.04.0079
基于二维动态元胞自动机的伪随机耦合映像格系统及其动态特性
Pseudo random coupled image lattice system based on two dimensional dynamic cellular automata and its dynamic characteristics
摘要
Abstract
This paper proposed a pseudorandom coupled mapping lattice system scheme based on two-dimensional dynamic cellular automata to address the issue of insufficient chaos intensity in spatiotemporal chaotic systems.It designed the two-di-mensional dynamic cellular automata based on elementary cellular automata,which achieved state diversity update through var-ying iteration counts and dynamically selecting iteration rules and directions,thereby enhancing the pseudorandom properties of the cells.During each cell state update.It dynamically generated coupling index values based on the row and column positions of the corresponding cells,and used these index values to perturb the chaotic sequences,improving their randomness and re-ducing correlations between cells.Analysis of the system's dynamic characteristics revealed strong chaos and randomness,ef-fectively extending the system's period and enhancing ergodicity.Finally,this paper designed an image encryption algorithm using SHA-256 operations to generate initialization parameters for the chaotic system,combined with the system's output se-quence and DNA encoding.Performance analysis of the algorithm,including information entropy,show that it possesses good statistical properties and security,promising good application potential in the field of image encryption.关键词
混沌/二维元胞自动机/二维耦合映像格/图像加密Key words
chaos/two dimensional cellular automata/two dimensional coupled mapping lattice/image encryption分类
信息技术与安全科学引用本文复制引用
马英杰,洪辉,张磊,刘亚奇..基于二维动态元胞自动机的伪随机耦合映像格系统及其动态特性[J].计算机应用研究,2024,41(11):3401-3408,8.基金项目
中央高校基本科研业务费资金资助项目(3282024060,3282023054) （3282024060,3282023054）
