On the Weight and Nonlinearity of Quadratic Rotation Symmetric Function with Two MRS Functions

The weight and nonlinearity of quadratic MRS function fn,s have been studied . This paper studies the weight and nonlinearity of odd variables quadratic rotation symmetric function which contains two MRS functions fn,2 and fn,3. First, we give the equivalent form of fn,2 + fn,3 by using recursive formula and the equivalent form of fn,2 + fn,3 which can be obtain by nonsingular affine transformation for n = 3, 5, 7 . Furthermore, we characterize the weight and nonlinearity of fn,2 + fn,3 from the existing research results.