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Cryptanalysis and improvement of a digital image encryption method with chaotic map lattices |
Wang Xing-Yuan (王兴元), Liu Lin-Tao (刘林涛) |
Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China |
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Abstract A digital image encryption scheme using chaotic map lattices has been proposed recently. In this paper, two fatal flaws of the cryptosystem are pointed out. According to these two drawbacks, cryptanalysts could recover the plaintext by applying chosen plaintext attack. Therefore, the proposed cryptosystem is not secure enough to be used in the image transmission system. Experimental results show the feasibility of the attack. As a result, we achieve some improvements to enhance the encryption scheme, which can completely resist our chosen plaintext attack.
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Received: 30 October 2012
Revised: 23 November 2012
Accepted manuscript online:
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PACS:
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05.45.Gg
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(Control of chaos, applications of chaos)
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05.45.Ra
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(Coupled map lattices)
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42.30.Va
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(Image forming and processing)
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05.45.Vx
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(Communication using chaos)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61173183, 60973152, and 60573172), the Superior University Doctor Subject Special Scientific Research Foundation of China (Grant No. 20070141014), the Program for Excellent Talents in Universities of Liaoning Province, China (Grant No. LR2012003), the Natural Science Foundation of Liaoning Province, China (Grant No. 20082165), and the Fundamental Research Funds for the Central Universities of China (Grant No. DUT12JB06). |
Corresponding Authors:
Wang Xing-Yuan
E-mail: wangxy@dlut.edu.cn
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Cite this article:
Wang Xing-Yuan (王兴元), Liu Lin-Tao (刘林涛) Cryptanalysis and improvement of a digital image encryption method with chaotic map lattices 2013 Chin. Phys. B 22 050503
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