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Chin. Phys. B, 2012, Vol. 21(4): 040504    DOI: 10.1088/1674-1056/21/4/040504
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Cryptanalysis of an ergodic chaotic encryption algorithm

Wang Xing-Yuan,Xie Yi-Xin,Qin Xue
Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
Abstract  In this paper, we present the results for the security and the possible attacks on a new symmetric key encryption algorithm based on the ergodicity property of a logistic map. After analysis, we use mathematical induction to prove that the algorithm can be attacked by a chosen plaintext attack successfully and give an example to show how to attack it. According to the cryptanalysis of the original algorithm, we improve the original algorithm, and make a brief cryptanalysis. Compared with the original algorithm, the improved algorithm is able to resist a chosen plaintext attack and retain a considerable number of advantages of the original algorithm such as encryption speed, sensitive dependence on the key, strong anti-attack capability, and so on.
Keywords:  chaos      cryptanalysis      encryption      block-cipher     
Received:  16 September 2011      Published:  29 February 2012
PACS:  05.45.Ac (Low-dimensional chaos)  
  05.45.Gg (Control of chaos, applications of chaos)  
  05.45.Vx (Communication using chaos)  
Fund: Project supported by the National Natural Science Foundation of China(Grant Nos.61173183,60573172,and 60973152),theDoctoral Program Foundation of Institution of Higher Education of China(Grant No.20070141014),and the Natural ScienceFoundation of Liaoning Province,China(Grant No.20082165)
Corresponding Authors:  Wang Xing-Yuan, E-mail:wangxy@dlut.edu.cn     E-mail:  wangxy@dlut.edu.cn

Cite this article: 

Wang Xing-Yuan,Xie Yi-Xin,Qin Xue Cryptanalysis of an ergodic chaotic encryption algorithm 2012 Chin. Phys. B 21 040504

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