On Quadratic Vectorial Bent Functions in Trace Forms

By permutation behavior of certain linearized polynomials, the bentness of quadratic vectorial bent functions of the form F (x)=+Tr_m^kt(c_kx^1+2kt) is investigated, where n=2kt and m|kt with k, t being positive integers. The numerical results show that there exist new quadratic vectorial bent functions obtained up to extended affine equivalence