An Image Encryption Scheme Based on Nonlinear Wavelet Function

作者：Ye, Guodong^*

来源：Journal of Computational and Theoretical Nanoscience, 2011, 8(4): 659-663.

DOI：10.1166/jctn.2011.1736

• Image Matrix
• Encryption
• Wavelet Function
• Permutation
• Module

In this paper, an image encryption scheme is suggested to improve the security of digital image information transmitted on public place. To disturb the strong correlation of the adjacent pixels in original image, a chaotic sequence generated by the wavelet function is taken to make the permutation for pixel positions after the image matrix being circled by the first two values of the sequences. To make the gray value be uniform distribution, we do the module function of chaotic values given by another wavelet map with permuted image pixels. With five keys in the proposed scheme and two functions of encryption, numerical experiment results show the good coding effect and large key space. The scheme can resist effectively traditional statistical attack, exhaustive attack, differential attacks and so on.

• 出版日期2011-4
• 单位广东海洋大学