Lag synchronization of hyperchaos with application to secure communications

被引:158
作者
Li, CD [1 ]
Liao, XF
Wong, KW
机构
[1] Chongqing Univ, Coll Math & Phys, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Dept Comp Sci & Engn, Chongqing 400044, Peoples R China
[3] City Univ Hong Kong, Dept Comp Engn & Informat Technol, Kowloon, Hong Kong, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1016/j.chaos.2004.04.025
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In this paper, hyperchaotic lag synchronization is restated as a nonlinear and lag-in-time observer design issue. This approach leads to a systematic tool, which guarantees the lag synchronization of a wide class of chaotic or hyperchaotic systems via a scalar signal. By exploiting this result, we propose a hyperchaos-based cryptosystem scheme that combines the conventional cryptographic methods and the lag synchronization of chaotic circuits. The computer simulation results show that the lag synchronization scheme and the cryptosystem proposed in this paper are both feasible. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:183 / 193
页数:11
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