摘要
目的由种子密钥生成非周期密码序列。方法利用混沌的初始敏感、无周期、不收敛但有界等特点,考虑到计算机的有界性和离散性等本质特征,提出通过两个不相关混沌函数的多维扩展,构造极大周期序列密码的生成算法。结果可以在计算机上利用混沌函数生成极大周期的密码序列。结论该算法实现简单、速度快、有极大周期,应用价值较大。
Aim How to produce non-periodic sequence cipher by seed key.Methods With the Chaos characteristics, which is sensitive to initial value, non-periodic and unshrinking but limited, and the computer characteristics, which is limit and discrete, the algorithm of producing very long periodic sequence cipher is discussed firstly by two no-relationship chaos function.Results The research shows that it is possible to use the chaos function to produce a very long sequence cipher in computer.Conclusion The algorithm is easy to implement in a speedy way, has very long period, so it is valuable for many application areas.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第3期270-273,共4页
Journal of Northwest University（Natural Science Edition）
基金
北京市科委重点基金资助项目(H030130113490)
关键词
序列密码
混沌
非周期
信息安全
sequence cipher
chaos
non-periodic
information security
