Patent ID: 9503373
Filing Date: 2016-11-22
CPC Classification: H04L

Claim Text:
1. A control method, comprising: associating, by a receiving device, a first one-way function value determined by an operation using a one-way function with a first destination; determining 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 by the receiving device from a transmitting device; associating the second one-way function value with a second destination and returning the identification information from the receiving device to the transmitting device when the second one-way function value is different from the first one-way function value; and associating the first one-way function value with the second destination and returning the identification information to the transmitting device when the second one-way function value is equal to the first one-way function value and a number of destinations associated with the first one-way function value is smaller than a prescribed number.