| 摘要 |
<p>PROBLEM TO BE SOLVED: To upgrade content encryption.SOLUTION: To solve such a problem that generation of a secret key used by the main processor of a receiver device is performed in a smart card, or decryption processing of a content encrypted selectively is performed in a smart card itself in order to prevent hacking and infringement of a protected video content, and since other embodiments may possibly deviate from the features described in the abstract, the abstract should not be considered as limiting.</p> |
