An Image Encryption Scheme Based on Hyperchaotic Rabinovich and Exponential Chaos Maps

Entropy

Xiaojun Tong¹  Yang Liu¹  Miao Zhang¹  Hui Xu¹ 

[1] School of Computer Science and Technology, Harbin Institute of Technology, Weihai, 264209, China; E-Mails:

关键词: exponential chaos;    hyperchaos;    image encryption;    pseudo-random sequence;   

DOI  :  10.3390/e17010181

来源: mdpi

【 摘 要 】

This paper proposes a new four-dimensional hyperchaotic map based on the Rabinovich system to realize chaotic encryption in higher dimension and improve the security. The chaotic sequences generated by Runge-Kutta method are combined with the chaotic sequences generated by an exponential chaos map to generate key sequences. The key sequences are used for image encryption. The security test results indicate that the new hyperchaotic system has high security and complexity. The comparison between the new hyperchaotic system and the several low-dimensional chaotic systems shows that the proposed system performs more efficiently.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland