中国物理B ›› 2011, Vol. 20 ›› Issue (8): 80504-080504.doi: 10.1088/1674-1056/20/8/080504

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Cryptanalysis of a chaos-based cryptosystem with an embedded adaptive arithmetic coder

王兴元, 谢旖欣   

  1. School of Electronic & Information Engineering, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2010-09-16 修回日期:2011-04-02 出版日期:2011-08-15 发布日期:2011-08-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60573172 and 60973152), the Doctoral Program Foundation of Institution of Higher Education of China (Grant No. 20070141014), and the Natural Science Foundation of Liaoning Province of China (Grant No. 20082165).

Cryptanalysis of a chaos-based cryptosystem with an embedded adaptive arithmetic coder

Wang Xing-Yuan(王兴元)† and Xie Yi-Xin(谢旖欣)   

  1. School of Electronic & Information Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2010-09-16 Revised:2011-04-02 Online:2011-08-15 Published:2011-08-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60573172 and 60973152), the Doctoral Program Foundation of Institution of Higher Education of China (Grant No. 20070141014), and the Natural Science Foundation of Liaoning Province of China (Grant No. 20082165).

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摘要： In this paper, we analyse a new chaos-based cryptosystem with an embedded adaptive arithmetic coder, which was proposed by Li Heng-Jian and Zhang J S (Li H J and Zhang J S 2010 Chin. Phys. B 19 050508). Although this new method has a better compression performance than its original version, it is found that there are some problems with its security and decryption processes. In this paper, it is shown how to obtain a great deal of plain text from the cipher text without prior knowledge of the secret key. After discussing the security and decryption problems of the Li Heng-Jian et al. algorithm, we propose an improved chaos-based cryptosystem with an embedded adaptive arithmetic coder that is more secure.

关键词: chaos, cryptography, compression, arithmetic coding

Abstract: In this paper, we analyse a new chaos-based cryptosystem with an embedded adaptive arithmetic coder, which was proposed by Li Heng-Jian and Zhang J S (Li H J and Zhang J S 2010 Chin. Phys. B 19 050508). Although this new method has a better compression performance than its original version, it is found that there are some problems with its security and decryption processes. In this paper, it is shown how to obtain a great deal of plain text from the cipher text without prior knowledge of the secret key. After discussing the security and decryption problems of the Li Heng-Jian et al. algorithm, we propose an improved chaos-based cryptosystem with an embedded adaptive arithmetic coder that is more secure.

Key words: chaos, cryptography, compression, arithmetic coding

中图分类号:  (Nonlinear dynamics and chaos)

  • 05.45.-a
05.45.Gg (Control of chaos, applications of chaos) 05.45.Vx (Communication using chaos)