摘要
本文讨论了混沌映射与密码编码算法间的相似性和区别,研究了将实数集实数映射成有限集整数的方法。该文在传统的Feistel结构算法基础上提出了一种基于混沌的128位密钥的分组混沌密码算法,用混沌映射实现了密码中非线性变换。
Some similarities and differences between chaos maps and cryptographic algorithms are discussed briefly. An important step for realizing a chaotic cryptography, that is, mapping real numbers in continuum into integers in a finite set is researched. On the base of conventional Feistel-structure, a 128 bits key cipher block algorithm based on chaos is proposed. Confusion and diffusion are necessary in nonlinear transform of a cipher, it is realized by chaos mapping. The algorithm surpasses DES algorithm in security and its speed is comparative with DES, so it is available.
出处
《北京电子科技学院学报》
2003年第1期13-21,共9页
Journal of Beijing Electronic Science And Technology Institute
基金
国家自然科学基金(Nos.70071047
10247005)
中国博士后科学基金(No.2002032129)
