Software use right management mode and manner

摘要

PROBLEM TO BE SOLVED: To make it possible to manage the use right of a software by a server by certifying a certification key stored in a client device at the time of executing the software to judge the propriety of its execution and controlling the start of the software based on the judged result. SOLUTION: In the case of inputting a software to a client machine 3, a software use right managing means 21 in a server machine 2 refers to a use right certifying key list storing means 22 at the time of receiving a use right certifying key issue request from the machine 3, and when a state is an unused use right certifying key, changes the state of a use right certifying key stored in the means 22 to a usable state and issues the corresponding use right certifying key to the machine 3. When there is no unused use right certifying key in the means 22 of the machine 2, the machine 3 is informed of the state. Thereby, the machine 3 aborts the input of the software.