摘要
T-函数由于具有计算速度快、密码学性质良好等特点而得到广泛应用,先后用于构造分组密码、Hash函数和流密码。单圈T-函数可以用来代替流密码中的线性反馈移位寄存器,逐渐用来构建新的流密码体制。文中介绍了单圈T-函数的性质,概括了长周期单圈T-函数已知的三种类型,推广了T-函数的定义,有利构造新的长周期单圈T-函数。并总结了关于单圈T-函数值得进一步研究的几个问题。
T-function,due to its high computing speed and excellent properties in cryptography,is now widely applied for constructing the block cipher,Hash function and stream cipher.T-function could be used to replace the linear feedback shift register in stream cipher and to construct new stream ciphers gradually.This paper describes the properties of single-cycle T-function,summarizes three kinds of known single-cycle T-function with long periods,and popularizes the definition of T-functions.All these are beneficial to the construction of single-cycle T-function with long periods.This article also summarizes some problems of single-cycle T-function worthy of further study.
出处
《通信技术》
2010年第3期165-167,共3页
Communications Technology
关键词
流密码
单圈函数
T-函数
广义T-函数
stream cipher
single-cycle function
T-function
generalized T-function
