Dynamic multi-chaos color image encryption algorithm based on FWHT

WEI Ji-yu; Li Guo-dong; XU Xiang-liang

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Dynamic multi-chaos color image encryption algorithm based on FWHT

更新时间：2026-09-04

- Dynamic multi-chaos color image encryption algorithm based on FWHT
- Vol. 37, Issue 9, Pages: 43-49(2020)
- 作者机构：
  
  新疆财经大学机构统计与数据科学学院,新疆,乌鲁木齐,830012
- 作者简介：
- 基金信息：
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- Published：2020
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魏积愚, 李国东, 许向亮. 基于FWHT的动态多混沌彩色图像加密算法[J]. 微电子学与计算机, 2020, 37(9): 43-49.

WEI Ji-yu, Li Guo-dong, XU Xiang-liang. Dynamic multi-chaos color image encryption algorithm based on FWHT[J]. 2020, 37(9): 43-49.
魏积愚, 李国东, 许向亮. 基于FWHT的动态多混沌彩色图像加密算法[J]. 微电子学与计算机, 2020, 37(9): 43-49. DOI：

WEI Ji-yu, Li Guo-dong, XU Xiang-liang. Dynamic multi-chaos color image encryption algorithm based on FWHT[J]. 2020, 37(9): 43-49. DOI：

摘要

针对彩色图像加密算法中混沌系统单一，密钥与明文关联性差的问题，提出一种基于FWHT的动态多混沌彩色图像加密算法.首先对图像进行快速沃尔什哈达玛变换(FWHT)；其次根据各通道像素值控制动态统一混沌系统参数构建不同系统，改进后用于各通道系数置乱；最后利用Rabinovich混沌序列控制PWLCM映射参数构建R-P混沌系统，迭代生成两级复合密钥流双扩散得到密文，叠加为彩色密文图像.结果显示，密文图像直方图分布均匀，相关性几乎为0，信息熵大于7.999 3，NPCR值和UACI值也近似于理论值，可有效抵抗各类攻击，具有较强加密性能.

Abstract

To solve the problem of single chaotic system and poor correlation between key and plaintext in color image encryption

a dynamic multi-chaotic color image encryption algorithm based on FWHT is proposed. First

fast Walsh hadamar transform (FWHT) is applied to the image. Secondly

different systems are constructed based on the dynamic unified chaotic system parameters controlled by the pixel values of each channel

which can be used for channel coefficient scrambling after improvement. Finally

using Rabinovich chaotic sequence to control the PWLCM mapping parameters to construct r-p chaotic system

the two-stage compound key flow was iteratively generated to obtain the ciphertext

and the superposition was made into color ciphertext image. The results showed that the histogram of ciphertext images was evenly distributed

the correlation was almost 0

the information entropy was greater than 7.999 3

the NPCR value and UACI value were also approximate to the theoretical value

which could effectively resist all kinds of attacks and had strong encryption performance.

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references

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