Cryptanalysis of a chaotic block cipher with external key and its improved version

被引:35
作者
Li, Chengqing [1 ]
Li, Shujun [2 ]
Alvarez, Gonzalo [3 ]
Chen, Guanrong [1 ]
Lo, Kwok-Tung [2 ]
机构
[1] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
[2] Hong Kong Polytech Univ, Dept Elect & Informat Engn, Kowloon, Hong Kong, Peoples R China
[3] Consejo Superior Invest Cient, Inst Fis Aplicada, Madrid 28006, Spain
关键词
All Open Access; Green;
D O I
10.1016/j.chaos.2006.08.025
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Recently, Pareek et al. proposed a symmetric key block cipher using multiple one-dimensional chaotic maps. This paper reports some new findings on the security problems of this kind of chaotic cipher: (1) a number of weak keys exist; (2) some important intermediate data of the cipher are not sufficiently random; (3) the whole secret key can be broken by a known-plaintext attack with only 120 consecutive known plain-bytes in one known plaintext. In addition, it is pointed out that an improved version of the chaotic cipher proposed by Wei et al. still suffers from all the same security defects. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:299 / 307
页数:9
相关论文
共 10 条
[1]   Cryptanalysis of a discrete chaotic cryptosystem using external key [J].
Alvarez, G ;
Montoya, F ;
Romera, M ;
Pastor, G .
PHYSICS LETTERS A, 2003, 319 (3-4) :334-339
[2]  
ALVAREZ G, 2006, INT J BIFUCATION CHA, V16
[3]   INFERRING SEQUENCES PRODUCED BY PSEUDO-RANDOM NUMBER GENERATORS [J].
BOYAR, J .
JOURNAL OF THE ACM, 1989, 36 (01) :129-141
[4]  
LI S, 2003, THESIS XIAN JIAOTONG
[5]  
Pareek N. K., 2005, Communications in Nonlinear Science and Numerical Simulation, V10, P715, DOI 10.1016/j.cnsns.2004.03.006
[6]   Image encryption using chaotic logistic map [J].
Pareek, N. K. ;
Patidar, Vinod ;
Sud, K. K. .
IMAGE AND VISION COMPUTING, 2006, 24 (09) :926-934
[7]   Discrete chaotic cryptography using external key [J].
Pareek, NK ;
Patidar, V ;
Sud, KK .
PHYSICS LETTERS A, 2003, 309 (1-2) :75-82
[8]  
ROBERT F, 1986, SPEINGER SERIES COMP, V6
[9]   Cryptanalysis of a cryptosystem using multiple one-dimensional chaotic maps [J].
Wei, Jun ;
Liao, Xiaofeng ;
Wong, Kwok-wo ;
Zhou, Tsing .
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION, 2007, 12 (05) :814-822
[10]  
Yang T., 2004, INT J COMP COGNITION, V2, P81