一种基于改进型Sine映射的快速混沌图像加密算法

文章摘要

一种基于改进型Sine映射的快速混沌图像加密算法

A fast chaotic image encryption algorithm based on improved Sine map

投稿时间：2020-05-19 修订日期：2020-05-19

DOI：

中文关键词: Sine映射混沌系统混沌序列图像加密

英文关键词: Sine map chaotic system chaotic sequence image encryption

基金项目:无

作者	单位	邮编
刘金源^*	重庆科技学院	401331
唐籍涛	中国人民解放军75837部队

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中文摘要:

混沌系统具有非周期性、不可预测性和对初始值的高度敏感性,因而广泛应用于数字图像加密。针对sine混沌映射的概率密度分布不均匀的问题,提出了一种改进的sine映射系统。系统在相平面内分布均匀,且具有更大的初始参数范围。基于该系统,构造了一种快速混沌图像加密算法。加密算法对明文图像执行像素置乱、扩散以及异或操作,使得密文图像呈噪声样式。实验及安全分析表明,该加密算法在加密速度、安全性能方面具有良好的特性。

英文摘要:

Chaotic system is widely used in digital image encryption because of its aperiodicity, unpredictability and high sensitivity to initial values. In order to solve the problem of uneven probability density distribution of Sine map, an improved Sine map system is proposed. The system is uniformly distributed in the phase plane and has a larger range of initial parameters. Based on this system, a fast chaotic image encryption algorithm is constructed. The encryption algorithm performs pixel scrambling, diffusion and XOR operations on the plaintext image, which makes the ciphertext image as noise. Experiments and security analysis show that the encryption algorithm has good characteristics in encryption speed and security performance.

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