Bent函数之和为Bent函数的等价判别及其相关系数

Sufficient and necessary conditions for the sum of Bent functions being Bent functions and their correlation coefficient

分别从平衡函数和概率角度给出了k(k≥2)个Bent函数的和函数是Bent函数的充要条件,并计算了这类函数对的相关系数.

This paper gives two sufficient and necessary conditions whether the addition function of k（k ≥ 2） Bent functions is Bent function by using probability and the property of balance function, and calculates the correlation coefficient of such a pair of Bent functions .