摘要
本文主要讨论了当n=2_m+1(m>1)时,n阶严格择多逻辑函数的代数正规形式中,所有的阶为k((n+1)/2≤k≤n—1)的非线性项都出现,从而从密码学角度来说,这种函数有好的密码学特征。
It is proved that in the algebraic normal form of the strict majority logic function with order n = 2m + 1(w > 1), all the nonlinear terms of k-th order, (n + 1)/2≤k≤n-1, must appear. Threrfore, from the view of cryptology, such strict majority logic function has good characteristics.
关键词
密码学
严格择
逻辑函数
谱分布
Cryptology
Strict majority
Logic function
Spectrum
