| 摘要 |
PURPOSE: To prevent the unfair use of a program by performing the verification of both of use permission information at the time of the download from a server. CONSTITUTION: A server 11 is provided with an execution control part 111 performing the processing for the download request of a program, a use permission information verification part 112 performing the verification of the use permission information of the program for a client 12, a use permission information control part 114 processing the request of the issue of the use permission information from the client 12, a use permission information generation part 115 generating the use permission information corresponding to the client 12 and a use permission information table 13 holding use permission information. The client 12 is provided with an execution request part 121 requesting the download of the program to the server 11, a use permission request part 123 requesting the issue of use permission information for each program of the server 11 and a use permission information control part 122 performing the control of the use permission information table 124. |
