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A novel image encryption algorithm based on bit-plane matrix rotation and hyper chaotic systems

机译：一种基于比特平面矩阵旋转和超混沌系统的新型图像加密算法

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摘要

In this paper, we propose a new image encryption algorithm based on bit-plane matrix rotation and two hyper chaotic systems. The algorithm first decomposes the plain-image into eight bit planes and constructs a three-dimensional (3D) matrix. Then the sub-matrix of the 3D bit-plane matrix is rotated in different directions controlled by PRNS generated by a hyper-chaotic system. Finally, the pixel values of the intermediate image are modified by using another key stream. Furthermore, the initial values of diffusion and parameters related with generating chaotic sequences are produced by the MD5 hash function of the plain-image, which enhances the correlation between the encryption process and the plain-image. Simulation experiments are presented to analyze the image encryption scheme in terms of key space, histogram, information entropy, key sensitivity and adjacent pixels correlation index. Theoretical analysis and experimental results demonstrate that the proposed algorithm has excellent performance and sufTcient security level.
机译：在本文中，我们提出了一种基于比特平面矩阵旋转的新图像加密算法和两个超混沌系统。该算法首先将普通图像分解为八个比特平面，并构建三维（3D）矩阵。然后，3D比特平面矩阵的子矩阵以由超混沌系统产生的PRN控制的不同方向旋转。最后，通过使用另一个密钥流来修改中间图像的像素值。此外，通过普通图像的MD5哈希函数产生与生成混沌序列相关的扩散和参数的初始值，这增强了加密过程与普通图像之间的相关性。提出了仿真实验，以分析关键空间，直方图，信息熵，关键敏感性和相邻像素相关指数的图像加密方案。理论分析和实验结果表明，所提出的算法具有出色的性能和余量安全水平。

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