| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent at low cost a decryption key needed for reproducing encrypted data recorded in a CD/DVD medium from being easily read. <P>SOLUTION: A CD/DVD medium management system includes: a means for storing tying information for the tagging of an RFID tag and a CD/DVD medium, while pairing this information with a decryption key; a means S1 for inputting information for identifying an individual; a means S3 for sending the input information for identifying the individual to a personal authentication device, and obtaining a personal key from the personal authentication device; a means for reading the tying information for the RFID tag and the CD/DVD medium from the RFID tag of the CD/DVD medium; a means S7 for obtaining the decryption key paired with the read information about the tagging of the RFID tag and the CD/DVD medium from the means storing the key; a means S8 for calculating a generation key based on the personal key and the decryption key obtained; and a means S9 for writing the calculated generation key in the RFID tag of the CD/DVD medium. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
