Multiple-image encryption algorithm based on mixed image element and permutation |
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| Affiliation: | 1. Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, 20156 Milan, Italy;2. Department of Electronics, Information and Bioengineering, Politecnico di Milano, Via Ponzio 34/5, 20133 Milan, Italy;1. Department of Physics, Harbin Institute of Technology, Harbin 150001, PR China;2. Department of Physics, Capital Normal University, Beijing 100048, PR China;3. Department of Automation Measurement and Control, Harbin Institute of Technology, Harbin 150001, PR China;1. Institute of Information Photonics Technology, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China;2. College of Applied Sciences, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China |
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| Abstract: | To improve encryption efficiency and facilitate the secure transmission of multiple digital images, by defining the pure image element and mixed image element, this paper presents a new multiple-image encryption (MIE) algorithm based on the mixed image element and permutation, which can simultaneously encrypt any number of images. Firstly, segment the original images into pure image elements; secondly, scramble all the pure image elements with the permutation generated by the piecewise linear chaotic map (PWLCM) system; thirdly, combine mixed image elements into scrambled images; finally, diffuse the content of mixed image elements by performing the exclusive OR (XOR) operation among scrambled images and the chaotic image generated by another PWLCM system. The comparison with two similar algorithms is made. Experimental results and algorithm analyses show that the proposed MIE algorithm is very simple and efficient, which is suitable for practical image encryption. |
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| Keywords: | Multiple-image encryption (MIE) Single-image encryption (SIE) Chaotic system Permutation Encryption efficiency |
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