A Novel Chaos-based Image Encryption Scheme with an Improved Permutation Process

Confidentiality is an important issue when digital images are transmitted over public networks, and encryption is the most useful technique employed for this purpose. Image encryption is somehow different from text encryption due to some inherent features of image such as bulk data capacity and high correlation among adjacent pixels, which are generally difficult to handle by conventional algorithms. Recently, chaos-based encryption has suggested a new and efficient way to deal with the intractable problems of fast and highly secure image encryption. This paper proposes a chaos-based cryptosystem with a novel permutation process for secure and efficient image protection. To improve the security of the confusion module, an improvement is made to the conventional confusion-diffusion architecture by introducing a certain diffusion mechanism in confusion stage through a lightweight bitlevel permutation algorithm. As a result, the diffusion performance is significantly enhanced and hence the overall security of the image cryptosystem is promoted. Results of various types of analysis indicate that the proposed scheme provides a good balance between security and speed and hence suitable for real-time secure image communication applications.

[1]  V. I. Arnolʹd,et al.  Ergodic problems of classical mechanics , 1968 .

[2]  Guido D. Salvucci,et al.  Ieee standard for binary floating-point arithmetic , 1985 .

[3]  S. El-Rabaie,et al.  Homomorphic image encryption , 2009, J. Electronic Imaging.

[4]  Zengqiang Chen,et al.  Image encryption based on a new total shuffling algorithm , 2008 .

[5]  Vinod Patidar,et al.  A new substitution–diffusion based image cipher using chaotic standard and logistic maps , 2009 .

[6]  Brahim Nini,et al.  Pixel Permutation of a Color Image Based on a Projection from a Rotated View , 2011 .

[7]  X. Liao,et al.  Selective image encryption using a spatiotemporal chaotic system. , 2007, Chaos.

[8]  C. Chui,et al.  A symmetric image encryption scheme based on 3D chaotic cat maps , 2004 .

[9]  Z. Guan,et al.  Chaos-based image encryption algorithm ✩ , 2005 .

[10]  Yucui Guo,et al.  A Novel Chaos-Based Image Encryption Scheme , 2009, 2009 International Conference on Information Engineering and Computer Science.

[11]  Bernie Sin-Hung Kwok,et al.  An efficient diffusion approach for chaos-based image encryption , 2009 .

[12]  Jinsheng Sun,et al.  A block cipher based on a suitable use of the chaotic standard map , 2005 .

[13]  J. Fridrich.  Symmetric Ciphers Based on Two-Dimensional Chaotic Maps , 1998 .

[14]  Safya Belghith,et al.  OCML-based colour image encryption , 2009 .

[15]  ZengWei Hong,et al.  A Virtual Optical Encryption Software System for Image Security , 2011 .

[16]  Guanrong Chen,et al.  A Novel Fast Image Encryption Scheme Based on 3D Chaotic Baker Maps , 2004, Int. J. Bifurc. Chaos.

[17]  Fuyan Sun,et al.  A novel image encryption scheme based on spatial chaos map , 2008 .

[18]  Zengqiang Chen,et al.  A new image encryption algorithm based on hyper-chaos , 2008 .

[19]  Guanrong Chen,et al.  A chaos-based image encryption algorithm with variable control parameters , 2009 .

[20]  A. Akhavan,et al.  A novel algorithm for image encryption based on mixture of chaotic maps , 2008 .

[21]  Shahram Etemadi Borujeni,et al.  Chaotic Image Encryption Design Using Tompkins-Paige Algorithm , 2009 .

[22]  Josef Scharinger.  Fast encryption of image data using chaotic Kolmogorov flows , 1998, J. Electronic Imaging.

[23]  Kwok-Wo Wong,et al.  A Fast Image Encryption Scheme based on Chaotic Standard Map , 2006, ArXiv.