利用布尔函数的代数标准型,总结了f与f+1具有高次数非零零化子的条件,得到布尔函数具有最高代数免疫阶的充分条件.构造了具有最高代数免疫阶的布尔函数,并对所构造函数的平衡性与对称性进行了讨论.
Based on the algebraic standard form of Boolean functions, the conditions satisfied by Boolean function f or f + 1 with high degree nonzero annihilators are summarized, the sufficient conditions satisfied by the Boolean functions with optimal algebraic immunity are therefore obtained. The Boolean functions with optimal algebraic immunity are constructed. The balance and the symmetry of the constructed functions are discussed.