BACKUP SUPPORT SYSTEM, BACKUP CLIENT, CONTROL SERVER, RECOVERY CLIENT, DATA BACKUP METHOD, DATA RECOVERY METHOD, AND COMPUTER PROGRAM THEREFOR

摘要

PPROBLEM TO BE SOLVED: To prevent unauthorized use and unauthorized recovery of data such as content. PSOLUTION: A backup support system comprises a backup client 112 connected to a communication network 110 to back up data, a recovery client 116 connected to the communication network to recover the backup data backed up by the backup client, and a control server 114 for controlling the backup by the backup client and the recover by the recovery client. Data versions are assigned to the data such as content and the backup data, and a backup data ID unique to the backup data is managed in the control server. The use of the data versions and backup data ID can easily prevent unauthorized use and unauthorized recovery of the data such as content. PCOPYRIGHT: (C)2005,JPO&NCIPI