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一类新型混沌反馈密码序列的理论设计
引用本文:桑涛,王汝笠,严义埙.一类新型混沌反馈密码序列的理论设计[J].电子学报,1999,27(7):47-50.
作者姓名:桑涛  王汝笠  严义埙
作者单位:中国科学院上海技术物理研究所光电子研究中心,上海,200083
摘    要:本文提出了一种新型混沌映射,“逐段二次方根”映射,用于反馈密码序列的设计,该映射可产生具有均匀分布 函数和δ-like自相关函数的模拟混沌序列,它们经过一类特殊变换的量化后可生成具有安全统计性质的0-1序列,与周红等人提出的映射相比,该新映射提供了更强的安全性,这是因为它在保留了原有的优良统计性质的基础上解决了“逐段线性”的缺陷并扩大了密钥空间。

关 键 词:密码  混沌  序列密码  m序列  线性复杂度

The Theoretical Design for a Class of New Chaotic Feedback Stream Ciphers
Sang Tao,Wang Ruli,Yan Yixun.The Theoretical Design for a Class of New Chaotic Feedback Stream Ciphers[J].Acta Electronica Sinica,1999,27(7):47-50.
Authors:Sang Tao  Wang Ruli  Yan Yixun
Abstract:This paper proposes a class of new mappings called piecewisesquareroot mappings to design feedback stream ciphers.Such mappings can generate chaotic analogue signals that have uniform distribution function,like autocorrelation function,and can be further quantized into 01 sequence with secure statistical properties by a class of special transofrmation.Compared with Zhou & Lings piecewiselinear mappings,piecewisesquareroot mappings provide enhanced security in that they can maintain the original perfect statistical properties,as well as overcome the defect of piecewiselinearity and expand the key space.
Keywords:Cryptography  Chaos  Stream Cipher  msequences  Linear complexity  
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