An Image Encryption Algorithm based on the Cyclic Transpositions of Matrix Ranks
In view of the speed and security problem of traditional encryption algorithm, this paper has proposed a kind of new image encryption algorithm of spatiotemporal chaos based on the random cyclic transpositions of image byte matrix ranks.With the combination of one-way coupled map lattice coupling and modular operation (OCML), the algorithm achieved horizontal and vertical random transpositions of image data matrix.The algorithm used 6 rounds of iterative encryption.the design of nonlinear round function mainly depends on the secrete cyclic transposition of matrix and the look-up operations, with the help of small chaotic maps iterative calculation, it is effective to increase the speed of encryption algorithm, in line with the real-time and security requirements of image encryption.The experiment has shown that the algorithm provided in this paper can resist the chosen/known plaintext attack and the damaged attack of ciphertext image.
Image encryption OCML cyclic transpositions,Masking matrix
Huanchang Qin Xinying Qin Yunfeng Zhu
Department of Physics and Electronics Information Engineering, Baise University, Baise,Guangxi,53300, China
国内会议
上海
英文
109-114
2011-10-14（万方平台首次上网日期，不代表论文的发表时间）