苏州科技大学学报（自然科学版）2026，Vol.43Issue(1)：66-71,6.DOI:10.12084/j.issn.2096-3289.2026.01.009
基于动态S盒与混沌映射的图像加密方案优化
Optimization of image encryption scheme based on dynamic S-box and chaotic mapping
摘要
Abstract
Digital images face severe security threats in network transmission,and traditional encryption methods have shortcomings in non-linear strength and anti-attack capability.Therefore,an image encryption optimization method based on dynamic S-box and chaotic mapping is proposed in this study.This method generates a high-strength key stream through a hyper chaotic Chen system,dynamically constructs an S-box with a fractal index ma-trix,and introduces a two-dimensional coupled mapping lattice and dynamic coding operation of deoxyribonucleic acid to achieve pixel level obfuscation diffusion collaborative encryption.The experimental results show that this method achieves an encryption time of only 28.1 ms and a throughput of 147.4 MB/s in 2 048×2 048 images.In terms of security,when the image size is 2 048×2 048,the maximum entropy of ciphertext information is 7.997.In the anti-attack test,the method maintained a minimum peak signal-to-noise ratio of 28.3 dB even when the Gauss-ian noise variance was 0.10.The method performed excellently in terms of encryption efficiency,security,and anti-attack capability,providing a real-time and robust solution for digital image protection and having significant engi-neering application value.关键词
动态S盒/混沌映射/图像加密/DNA编码/分形索引Key words
dynamic S-box/chaotic mapping/image encryption/DNA encoding/fractal index分类
信息技术与安全科学引用本文复制引用
罗少兰,刘辉..基于动态S盒与混沌映射的图像加密方案优化[J].苏州科技大学学报（自然科学版）,2026,43(1):66-71,6.基金项目
福建省中青年教师教育科研项目(JAT241287) （JAT241287）
