A method for generating a pair request / response in an electric machine and electric machine embodying the METHOD

A method for generating a pair query / response in an electrical machine (1) as a basis for authentication. The electrical machine includes at least one stator (2) and a rotor (3). The request is a voltage or current signal which produces an induction between the rotor and the stator and the answer to the query is a dependent variable of the induction produced.