基于改进ZigZag变换与混沌序列相结合的数字图像加密算法
A Digital Image Encryption Algorithm Based on Improved ZigZag Transformation and Chaotic Sequence
DOI: 10.12677/CSA.2017.76066, PDF, HTML, XML,  被引量 下载: 1,696  浏览: 3,331 
作者: 冯 炽*, 叶 桦：东南大学自动化学院，江苏 南京
关键词: ZigZag；混沌序列；图像加密；ZigZag； Chaotic Sequence； Image Encryption
摘要: 针对数字信息在传输过程中易被窃取的现象，本文提出了一种基于改进的ZigZag变换与混沌序列相结合的数字图像加密算法。首先对原始图像进行改进ZigZag置乱变换，然后利用混沌序列对图像的每一个像素进行位运算，得到加密后的图像。解密正是加密的反过程。通过理论分析与实验验证，新算法能够使加密后的图像灰度分布均匀，具有更大的密钥空间，并且对密钥具有更高的敏感性。
Abstract: For the phenomenon that digital information is easily stolen during transmission, we purpose a digital image encryption algorithm based on improved ZigZag transformation and chaotic se-quence. Firstly, the original image is transformed with the improved ZigZag method. Then each bit of the image is bit-computed using the chaotic sequence. Decryption is the reverse of encryption. According to the theoretical analysis and experimental verification, the encrypted image has a uniform gray distribution. Besides, the new algorithm has a large key space, and has a high sensitivity to the keys.
文章引用：冯炽, 叶桦. 基于改进ZigZag变换与混沌序列相结合的数字图像加密算法[J]. 计算机科学与应用, 2017, 7(6): 554-561. https://doi.org/10.12677/CSA.2017.76066

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