当前位置: X-MOL 学术Nonlinear Dyn. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Enhancing the kinetic complexity of 2-D digital coupled chaotic lattice
Nonlinear Dynamics ( IF 5.6 ) Pub Date : 2020-11-23 , DOI: 10.1007/s11071-020-06092-6
Chengye Zou , Xingyuan Wang , Haifeng Li , Yongzhao Wang

A 2-dimensional coupled logistic map lattice model and a 2-dimensional Logistic-nested-Sine map are proposed in this paper. In order to strengthen complexity of 2-dimensional coupled logistic map lattice, chaotic sequences are transformed to binary sequences, and new decimal sequences are constructed by perturbed binary sequences. Numerical experimental results demonstrate that this method can increase the complexity and ergodicity of 2-dimensional coupled logistic map lattice effectively. The initial values of the 2-dimensional coupled logistic map lattice are determined by utilization of the SHA 512 hash function. The row and column positions of pixels are shuffled completely in permutation process. Unlike 1-dimensional linear diffusion operation, we have adopted two-dimensional space diffusion began from random semi-surround. Keys security, correlation coefficient, information entropy, and ability of defending differential attack are analyzed to confirm the security of our encryption scheme. Experimental results confirm that the proposed algorithm can encrypt image effectively.



中文翻译:

增强二维数字耦合混沌晶格的动力学复杂性

提出了二维耦合Logistic地图格模型和二维Logistic-nested-Sine正弦图。为了增强二维耦合逻辑映射图格的复杂性,将混沌序列转换为二进制序列,并通过扰动的二进制序列构造新的十进制序列。数值实验结果表明,该方法可以有效地提高二维耦合逻辑地图格的复杂度和遍历性。通过利用SHA 512哈希函数来确定二维耦合后勤地图格的初始值。像素的行和列位置在置换过程中被完全混洗。与一维线性扩散运算不同,我们采用了从随机半环绕声开始的二维空间扩散。密钥安全性 通过分析相关系数,信息熵和防御差分攻击的能力来确定我们加密方案的安全性。实验结果表明,该算法可以有效地对图像进行加密。

更新日期:2020-11-25
down
wechat
bug