FIELD: information technology; image forming apparatus.
SUBSTANCE: invention relates to authentication of imaging device. Method comprises forming first data determining integrity relative to first data by means of a main controller installed on main housing of imaging device, for authentication with a CRUM module. Method comprises transmitting by main controller to CRUM module a first signal, which includes first data and first data for determining integrity. Integrity of first signal is tested via CRUM module using first data of determining integrity. Method includes forming by CRUM module second data for determining integrity using second data which must be transmitted to main controller, and first data for determining integrity in response to integrity of verified first signal. Method includes transmitting by CRUM module a second signal, which includes second data and second data for determining integrity of main controller.
EFFECT: technical result consists in reduction of errors of communication between flow control unit and image forming apparatus.
17 cl, 29 dwg
