Lifting-based Wavelet Transform Based Image Encryption Algorithm
In order to trade-off between computational effects and computational cost of present image encryption algorithm, a novel image encryption algorithm based on lifting-based wavelet transform is proposed in this paper.The image encryption process includes three steps: first the original image was divided into blocks, which were transformed by lifting based wavelet;secondly the wavelet domain coefficients were encryption by random mask which generated by user key, and finally employing Arnold scrambling to encrypt the coefficients.The security of proposed scheme is depended on the levels of wavelet transform, user key, and the times of Arnold scrambling.Theoretical analysis and experimental results demonstrate that the algorithm is favorable.
information security image encryption fractional Fourier transform random phase mask block-based transformation
Jinglong Zuo Delong Cui
College of Computer and Electronic Information Guangdong University of Petrochemical Technology Maoming China
国际会议
太原
英文
206-209
2011-02-26（万方平台首次上网日期，不代表论文的发表时间）