Permission control of software based on registration system with Vandermonde matrix in a Galois field

This paper introduces a method of permission control of software which uses a registration system by means of linear mapping defined by the dynamic constitution of Vandermonde matrix and its inverse. The scheme refers to the registration system of software, the constitution of Vandermonde matrix from the user´s parameters, the quick computation of the inverse of Vandermonde matrix and the corresponding linear mappings. A numerical example shows that the algorithm is viable and secure.