New chaos-based encryption scheme for digital sequence

作     者：Zhang Zhengwei Fan Yangyu Zeng Li 

作者机构：School of Electronics and Information Northwestern Polytechnical Univ. Xi'an 710072 P. R. China 

出 版 物：《Journal of Systems Engineering and Electronics》 (系统工程与电子技术（英文版）)

年 卷 期：2007年第18卷第4期

页      面：698-703,709页

核心收录：

学科分类：11[军事学] 0810[工学-信息与通信工程] 1105[军事学-军队指挥学] 08[工学] 081002[工学-信号与信息处理] 110503[军事学-军事通信学] 

基　　金：This project was supported by the National Natural Science Foundation of Shaan'Xi Province  China (2003F40) 

主　　题：encryption scheme LPO (leaping periodic orbits) chaos initial conditions parameter estimation nonlinear system 

摘      要：To enhance the anti-breaking performance of privacy information, this article proposes a new encryption method utilizing the leaping peculiarity of the periodic orbits of chaos systems. This method maps the secret sequence to several chaos periodic orbits, and a short sequence obtained by evolving the system parameters of the periodic orbits in another nonlinear system will be the key to reconstruct these periodic orbits. In the decryption end, the shadowing method of chaos trajectory based on the modified Newton-Raphson algorithm is adopted to restore these system parameters. Through deciding which orbit each pair coordinate falls on, the original digital sequence can be decrypted.