基于二维复合混沌系统的彩图加密算法研究
Research on color image encryption algorithm based on 2d composite chaos system
任增凤 1巫朝霞1
作者信息
- 1. 新疆财经大学,新疆乌鲁木齐 830012
- 折叠
摘要
[目的/意义]数字图像作为一种可视化的交流方式,在网络传输过程中可能会导致敏感信息的泄露,而图像加密可以有效地保护图像隐私内容的安全.[方法/过程]提出了二维复合混沌系统(2D-SLCM),并设计了一种与4D超混沌相结合二维复合混沌系统的彩图加密算法.算法采用SHA-256对明文图像处理后得到的数据作为2D-SLCM的初始值,然后将2D-SLCM生成的混沌序列作为4D超混沌的初始值,生成的混沌序列用于置乱扩散,最后异或得到密文图像.[结果/结论]仿真实验结果显示,算法通过了统计攻击分析、抗差分攻击分析和密钥敏感性分析等安全性测试.
Abstract
[Purpose/Significance]Digital images,as a visual means of communication,may lead to the leakage of sensitive information during transmission in the network.Image encryption can effectively protect the security of image privacy content.[Method/Process]A two-dimensional composite chaotic system(2D-SLCM)was proposed,and a color image encryption algorithm combining 4D hyperchaos with two-dimensional composite chaotic system was designed.The algorithm uses SHA-256 to process the plaintext image and obtain the data as the initial value of 2D-SLCM;Then,the chaotic sequence generated by 2D-SLCM is used as the initial value of 4D hyperchaos,and the generated chaotic sequence is used for scrambling diffusion,finally XOR is used to obtain the ciphertext image.[Results/Conclusion]The simulation experiment results show that the algorithm has passed security tests such as statistical attack analysis,differential attack resistance analysis,and key sensitivity analysis.
关键词
彩色图像加密/超混沌系统/Arnold置乱/数字图像/数据安全治理Key words
color image encryption/hyperchaotic systems/arnold scrambling/digital images/data security governance引用本文复制引用
基金项目
国家自然科学基金资助项目(61941205)
出版年
2024
NETL
NSTL
万方数据