A novel hybrid color image encryption algorithm using two complex chaotic systems |
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| Institution: | 1. College of Mechanical and Electronic Engineering, Shandong Key Laboratory of Gardening Machinery and Equipment, Shandong Agricultural University, Taian 271018, China;2. College of Engineering, Peking University, Beijing 100871, China;1. Department of Mechanical Engineering, Isfahan University of Technology, 8415683111 Isfahan, Iran;2. Department of Chemistry, Isfahan University of Technology, 8415683111 Isfahan, Iran;1. City Institute, Dalian University of Technology, 31 Tieshanxi Road, Dalian 116600, PR China;2. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China;1. School of Information Engineering, Weifang Vocational College, Weifang 261041, China;2. Modern Logistics Information Engineering Technology Research Center of Weifang, Weifang 261041, China;3. School of Computer Science and Engineering, Xinjiang University of Finance and Economics, Urumqi, 830012, China;1. Graduate Program in Electrical Engineering, Federal University of Minas Gerais, MG, Brazil;2. Faculty of Computing, Universiti Teknologi Malaysia, Johor, Malaysia;3. The Research Center for Advanced Image and Information Technology, School of Electronics & Information Engineering, ChonBuk National University, ChonBuk, JeonJu 561-756, Republic of Korea |
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| Abstract: | Based on complex Chen and complex Lorenz systems, a novel color image encryption algorithm is proposed. The larger chaotic ranges and more complex behaviors of complex chaotic systems, which compared with real chaotic systems could additionally enhance the security and enlarge key space of color image encryption. The encryption algorithm is comprised of three step processes. In the permutation process, the pixels of plain image are scrambled via two-dimensional and one-dimensional permutation processes among RGB channels individually. In the diffusion process, the exclusive-or (XOR for short) operation is employed to conceal pixels information. Finally, the mixing RGB channels are used to achieve a multilevel encryption. The security analysis and experimental simulations demonstrate that the proposed algorithm is large enough to resist the brute-force attack and has excellent encryption performance. |
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| Keywords: | Image encryption Complex Chen system Complex Lorenz system Exclusive-or operation Chaotic ponytail |
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