【摘 要】
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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 trans
【机 构】
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Department of Physics and Electronics Information Engineering, Baise University, Baise,Guangxi,53300
【出 处】
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2011 Second International Conference on Information,Communic
论文部分内容阅读
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.
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