A novel chaotic image encryption scheme using DNA sequence operations |
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| Institution: | 1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China;2. City Institute, Dalian University of Technology, Dalian 116600, 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;1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China;2. City Institute, Dalian University of Technology, Dalian 116600, China;1. Shanghai Key Lab of Intelligent Information Processing, School of Computer Science, Fudan University, Shanghai 200433, China;2. College of Software, Henan University, Kaifeng 475004, China;3. Department of Physics, Humboldt University, 12489 Berlin, Germany;4. Potsdam Institute for Climate Impact Research (PIK), 14473 Potsdam, Germany;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 |
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| Abstract: | In this paper, we propose a novel image encryption scheme based on DNA (Deoxyribonucleic acid) sequence operations and chaotic system. Firstly, we perform bitwise exclusive OR operation on the pixels of the plain image using the pseudorandom sequences produced by the spatiotemporal chaos system, i.e., CML (coupled map lattice). Secondly, a DNA matrix is obtained by encoding the confused image using a kind of DNA encoding rule. Then we generate the new initial conditions of the CML according to this DNA matrix and the previous initial conditions, which can make the encryption result closely depend on every pixel of the plain image. Thirdly, the rows and columns of the DNA matrix are permuted. Then, the permuted DNA matrix is confused once again. At last, after decoding the confused DNA matrix using a kind of DNA decoding rule, we obtain the ciphered image. Experimental results and theoretical analysis show that the scheme is able to resist various attacks, so it has extraordinarily high security. |
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| Keywords: | Image encryption DNA coding DNA sequence operation Coupled map lattice |
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