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:2019,28(6):125-129
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基于改进Logistic映射的图像加密算法
(1.江苏南水科技有限公司, 南京 210012;2.水利部南京水利水文自动化研究所, 南京 210012)
Image Encryption Algorithm Based on Improved Logistic Mapping
(1.Jiangsu Nanshui Technology Co. Ltd., Nanjing 210012, China;2.Nanjing Automation Institute of Water Conservancy, Ministry of Water Resources, Nanjing 210012, China)
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投稿时间:2018-08-29    修订日期:2018-09-26
中文摘要: 为了有效地提高图像加密效果及安全性,设计一种改进logistic映射图像加密算法.首先在cubic映射和logistic映射基础上,提出了一种新的二维离散映射,克服了混沌区间窄和参数少的问题,并利用改进的logistic映射对图像进行置乱,然后将置乱图像进行相邻像素间按位异或运算、交叉换位操作得到最终密文图像.仿真结果表明,该算法简单易执行,安全性好,抗攻击能力较强,效率高等特点.
Abstract:In order to effectively improve the image encryption effect and security, an improved logistic mapping image encryption algorithm is designed. Firstly, on the basis of cubic mapping and logistic mapping, a new two-dimensional discrete mapping is proposed to overcome the problem of narrow chaotic interval and fewer parameters. The image is scrambled by improved logistic mapping. Then the scrambled image is processed by bitwise exclusive or operation between adjacent pixels, and the final cipher-text image is obtained by crossover operation. The simulation results show that the algorithm is simple and easy to execute, has good security, strong anti-attack ability and high efficiency.
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胡春杰,阮聪,牛智星.基于改进Logistic映射的图像加密算法.计算机系统应用,2019,28(6):125-129
HU Chun-Jie,RUAN Cong,NIU Zhi-Xing.Image Encryption Algorithm Based on Improved Logistic Mapping.COMPUTER SYSTEMS APPLICATIONS,2019,28(6):125-129

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