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Security Analysis of a Block Encryption Algorithm Based on Dynamic Sequences of Multiple Chaotic Systems |
| DU Mao-Kang**, HE Bo, WANG Yong
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Key Laboratory of Electronic Commerce and Logistics, Chongqing University of Posts and Telecommunications, Chongqing 400065
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| Cite this article: |
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DU Mao-Kang, HE Bo, WANG Yong 2011 Chin. Phys. Lett. 28 010503 |
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Abstract Recently, the cryptosystem based on chaos has attracted much attention. Wang and Yu (Commun. Nonlin. Sci. Numer. Simulat. 14 (2009) 574) proposed a block encryption algorithm based on dynamic sequences of multiple chaotic systems. We analyze the potential flaws in the algorithm. Then, a chosen-plaintext attack is presented. Some remedial measures are suggested to avoid the flaws effectively. Furthermore, an improved encryption algorithm is proposed to resist the attacks and to keep all the merits of the original cryptosystem.
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| Keywords:
05.45.Gg
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Received: 14 April 2010
Published: 23 December 2010
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| PACS: |
05.45.Gg
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(Control of chaos, applications of chaos)
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[1] Wang X Y and Yu Q 2009 Commun. Nonlin. Sci. Numer. Simulat. 14 574
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[8] Wang X, Chen F and Wang T 2010 Commun. Nonlin. Sci. Numer. Simulat. 15 2479
[9] Wang Y, Liao X et al 2008 Information Sci. 178 1391
[10] Shannon C E 1949 Bell. Syst. Tech. J. 28 656
[11] Stinson D R 1995 Cryptography: Theory and Practice (FL: CRC)
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