CONTROL METHOD BY RECEIVING DEVICE, RECEIVING DEVICE, AND COMMUNICATION SYSTEM

A receiving device associates a first one-way function value determined by an operation using a one-way function with a first destination. Next, the receiving device determines a second one-way function value by the operation using the one-way function from identification information stored in the receiving device and element information received from a transmitting device. When the second one-way function value is different from the first one-way function value, the receiving device associates the second one-way function value with a second destination, and returns the identification information to the transmitting device.