New chaotic image encryption algorithm based on cross-mapping |
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Authors: | Xiaojun Tong Yang Liu Miao Zhang Hongyu Shi |
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Institution: | School of Computer Science and Technology,Harbin Institute of Technology,Weihai 264209,Shandong,China |
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Abstract: | Chaotic cryptography has been applied to image encryption;however,only the traditional low-dimensional chaotic systems has been widely analyzed or deciphered,which does not show satisfied security and efficiency.To solve this problem,a new algorithm based on cross-chaos map has been created in this article.The image pixels are scrambled under control of high-dimensional chaotic sequence,which is generated by cross chaotic map.The image pixels are substituted by ciphertext feedback algorithm.It can relate encryption required parameters with plaintext and can make a plaintext byte affect more ciphertext bytes.Proved by theoretical analysis and experimental results,the algorithm has higher complex degree and has passed SP800-22 pseudo-random number standard tests,and it has high encryption speed,high security,etc.It can be widely applied in the field of image encryption. |
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Keywords: | chaos image encryption cross chaotic map cross-scrambling substitute |
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