查询结果:   李娟霞,孙会明,陈薇.新一维混沌系统及加密特性研究[J].计算机应用与软件,2016,33(11):321 - 325,330.
中文标题
新一维混沌系统及加密特性研究
发表栏目
安全技术
摘要点击数
581
英文标题
ON A NEW 1D CHAOTIC SYSTEM AND ITS ENCRYPTION CHARACTERISTIC
作 者
李娟霞 孙会明 陈薇 Li Juanxia Sun Huiming Chen Wei
作者单位
河西学院物理与机电工程学院 甘肃 张掖 734000 西安科技大学电气与控制工程学院 陕西 西安 710054    
英文单位
School of Physics and Electromechanical Engineering,Hexi University,Zhangye 734000,Gansu,China College of Electrical and Control Engineering,Xi’an University of Science and Technology,Xi’an 710054,Shaanxi,China    
关键词
混沌 图像加密 统计分析
Keywords
Chaos Image encryption Statistical analysis
基金项目
作者资料
李娟霞,讲师,主研领域:机电控制,计算机测控系统,智能信息处理。孙会明,硕士生。陈薇,硕士生。 。
文章摘要
提出一种新的产生一维混沌系统的组合结构,以此结构设计两个新一维混沌系统,通过绘制Lyapunov指数图和分岔图研究两个新混沌系统性能。研究结果表明,此结构生成的一维混沌系统具有混沌区间大、区间连续、混沌序列分布均匀、系统Lyapunov指数高和可控参数多等优点。为了进一步提高混沌序列均匀分布特性,设计一变换过程,变换之后的混沌序列满足均匀分布。最后,为了展示新系统在信息安全方面的应用,设计一简单的图像加解密算法。通过Matlab软件进行仿真和性能测试,结果表明变换之后的混沌序列具有更好的加密特性。
Abstract
This paper proposes a new composite structure for generating 1D chaotic system. Two new 1D chaotic systems are designed by using this structure. Through plotting Lyapunov exponent diagram and bifurcation diagram we studied the performance of two new chaotic systems, study results showed that the new 1D chaotic system generated by this structure had the advantages of large and continuous chaotic range, uniform chaotic sequence distribution, high system Lyapunov exponent and more controllable parameters, etc. In order to further improve the uniformity of chaotic sequence distribution, we designed a transformation process. After the transformation the chaotic sequence satisfied the uniform distribution. At last, in order to demonstrate its applications in information security, we designed a simple image encryption and decryption algorithm. The new systems were simulated and tested their performances on Matlab, results showed that after the transformation the chaotic sequence had higher encryption characteristic.
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