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

作　　者：王兴元 谢旖欣 

机构地区：[1]School of Electronic & Information Engineering,Dalian University of Technology

出　　处：《Chinese Physics B》2011年第8期97-105,共9页中国物理B（英文版）

基　　金：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);the Natural Science Foundation of Liaoning Province of China (Grant No. 20082165)

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.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 

分 类 号：O415.5[理学—理论物理] TN918.1[理学—物理]