Method and system for distributing program, server and client terminals for executing program, device for obtaining program, and recording medium

摘要

The distribution of a program is carried out by an agent system. The server (10) has a function ( (4) ) which transmits a service ID uniquely determined inside the distribution system, and a function ( (6) ) which, in the case where there is an acquisition request for a program attached with the transmitted service ID, transmits the program together with the service ID to the client terminal making the acquisition request; and the client terminals (20) are equipped with a function ( (3)) which makes a request for the issuing of a service ID before the request of a required program, a function ( (5) ) which acquires the service ID transmitted from the server, and makes an acquisition request for the program attached with the acquired service ID, and a function which authorizes the execution of a program only in the case where the received program matches the service ID attached at the time of said acquisition request.