An answer to an open problem of Mesnager on bent functions

Abstract In 2014, Mesnager proposed two open problems in [4, IEEE TIT, 60(7): 4397-4407, 2014] on the construction of bent functions. One problem has been settled by Tang et al. in 2017. However, the other is still outstanding, which is solved in this letter by considering a class of PS − vectorial bent functions.