Cryptanalysis of a cryptosystem using multiple one-dimensional chaotic maps

Cryptanalysis of a cryptosystem using multiple one-dimensional chaotic maps
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DOI:
10.1016/j.cnsns.2005.06.001
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发表时间:
2007-08
影响因子:
3.9
通讯作者:
Jun Wei;X. Liao;Kwok-wo Wong;Tsing Zhou
Jun Wei;X. Liao;Kwok-wo Wong;Tsing Zhou
中科院分区:
数学2区
文献类型:
--
作者:
Jun Wei;X. Liao;Kwok-wo Wong;Tsing Zhou

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近年来,提出了一种利用128位外密钥和多个混沌映射的混沌密码系统。本文指出了该密码系统的一个基本缺陷,并提出了一种已知的明文攻击。在此基础上,提出了一种改进方案,在保留原密码系统优点的同时避免了该缺陷。
Recently, a new chaotic cryptosystem using external 128-bit key and multiple chaotic maps has been proposed. In this paper, a fundamental flaw of this cryptosystem is pointed out and a known plaintext attack is presented. Furthermore, a remedial modification is suggested, which avoids the flaw while keeping all the merits of the original cryptosystem.