A Colour Image Encryption Scheme Using Permutation-Substitution Based on Chaos

被引：33

作者：

Wang, Xing-Yuan ^{[1
]}

Zhang, Ying-Qian ^{[1
,2
]}

Bao, Xue-Mei ^{[1
]}

机构：

[1] Dalian Univ Technol, Fac Elect Informat & Elect Engn, Dalian 116024, Peoples R China

[2] Dalian Univ Technol, City Inst, Dalian 116600, Peoples R China

来源：

ENTROPY | 2015年 / 17卷 / 06期

基金：

中国国家自然科学基金;

关键词：

image encryption; spatiotemporal chaos; colour image; permutation; substitution; SYSTEM;

D O I：

10.3390/e17063877

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An encryption scheme for colour images using a spatiotemporal chaotic system is proposed. Initially, we use the R, G and B components of a colour plain-image to form a matrix. Then the matrix is permutated by using zigzag path scrambling. The resultant matrix is then passed through a substitution process. Finally, the ciphered colour image is obtained from the confused matrix. Theoretical analysis and experimental results indicate that the proposed scheme is both secure and practical, which make it suitable for encrypting colour images of any size.

引用

页码：3877 / 3897

页数：21

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