Cryptanalysis of a cryptosystem using multiple one-dimensional chaotic maps |
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| Institution: | 1. Department of Computer Science and Engineering, Chongqing University, Chongqing 400044, PR China;2. Zunyi Medical College, Zhunyi, 563000 Guizhou, PR China;3. Department of Computer Engineering and Information Technology, City University of Hong Kong, Hong Kong;1. National Engineering School of Tunis, Tunisia;2. Mathematics Department, computer science laboratory, Faculty of Science, Menoufia University, Shebin El-Koom 32511, Egypt;3. Lumina-The University of South-East Europe, IT&C Department, Bucharest 021187, Romania;1. Department of Electronic Information Engineering, Nanchang University, Nanchang 330031, China;2. Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh 15261, USA;3. Jiangxi Province Key Laboratory of Water Information Cooperative Sensing and Intelligent Processing, Nanchang 330099, China;1. College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;2. Changsha Branch, China Mobile Communication Group Hunan Co. Ltd, Changsha 410007, China;3. Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Information Science and Engineering, Hunan University, Changsha 410082, China |
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| Abstract: | Recently, a new chaotic cryptosystem using external 128-bit key and multiple chaotic maps has been proposed. In this paper, a fundamental flaw of this cryptosystem is pointed out and a known plaintext attack is presented. Furthermore, a remedial modification is suggested, which avoids the flaw while keeping all the merits of the original cryptosystem. |
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