College of Computer Science, Chongqing University, Chongqing, China.
School of Electronics and Information Engineering, Fuqing Branch of Fujian Normal University, Fuqing, China.
PLoS One. 2020 Nov 12;15(11):e0242110. doi: 10.1371/journal.pone.0242110. eCollection 2020.
Image encryption is an effective method for protecting private images during communication. In this paper, a novel image encryption method is proposed based on a 5D hyperchaotic system. Since a 5D hyperchaotic system can generate more complex dynamic behavior than a low-dimensional system, it is used in this paper to generate pseudorandom number sequences. The generated sequences are processed to obtain new sequences. The randomness of the new sequences is improved by recombination and rearrangement. The experimental results and theoretical analysis show that the method possesses a large key space and can resist differential attacks, statistical analysis, entropy analysis, clipping attacks and noise attacks. Therefore, it is very secure and can be used for secure communication.
图像加密是在通信过程中保护私人图像的有效方法。本文提出了一种新的基于 5D 超混沌系统的图像加密方法。由于 5D 超混沌系统可以产生比低维系统更复杂的动态行为，因此本文将其用于生成伪随机数序列。对生成的序列进行处理，得到新的序列。通过重组和重排来提高新序列的随机性。实验结果和理论分析表明，该方法具有较大的密钥空间，并且可以抵抗差分攻击、统计分析、信息熵分析、裁剪攻击和噪声攻击。因此，它非常安全，可以用于安全通信。
