| 摘要 |
<p>In a recording medium reproduction method, content data read from a recording medium is determined to be encrypted content data or not. When the content data read from the recording medium is encrypted content data, at least first key data (medium band key data) and second key data (medium key block) read from the recording medium are used to create third key data (key locker key data) for decrypting the encrypted content key data which has been read from the recording medium. By using the content key data decrypted by the third key data, the encrypted content data read from the recording medium is decrypted.</p> |
