A Color Image Encryption Algorithm Based on a Fractional-Order Hyperchaotic System

Entropy

Xia Huang¹  Tiantian Sun¹  Yuxia Li¹ 

[1] College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China; E-Mails:

关键词: color image encryption;    fractional-order;    hyperchaotic system;   

DOI  :  10.3390/e17010028

来源: mdpi

【 摘 要 】

In this paper, a new color image encryption algorithm based on a fractional-order hyperchaotic system is proposed. Firstly, four chaotic sequences are generated by a fractional-order hyperchaotic system. The parameters of such a system, together with the initial value, are regarded as the secret keys and the plain image is encrypted by performing the XOR and shuffling operations simultaneously. The proposed encryption scheme is described in detail with security analyses, including correlation analysis, histogram analysis, differential attacks, and key sensitivity analysis. Experimental results show that the proposed encryption scheme has big key space, and high sensitivity to keys properties, and resists statistical analysis and differential attacks, so it has high security and is suitable for color image encryption.

【 授权许可】

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