| 摘要 |
<p>A hard disk (530) of a personal computer contains a content list file (150) and a ciphered confidential file (162). A license management device (520) has a binding key (Kb) stored in a license area (5215B) of a memory. The ciphered confidential file (162) can be deciphered and ciphered by a binding key (Kb) stored in the license management device (520). The license of the acquired ciphered content data is stored in the ciphered confidential file (162) as confidential information. As a result, the ciphered data and license distributed by software can be transferred to another data terminal.</p> |
