| 摘要 |
A protected media content with a media access file through which media files which contain the protected content can be accessed only if a media player necessary for using the protected content has a first valid activation key which matches a second authentication key stored in the media access file. The media player compares the first and second activation keys in response to the user selecting the protected content, and it independently denies or allows access to the protected content. The media access file contains information that defines actual media files containing the protected content, and if the computer program or media player allows the access, the media files are accessed through the media access file by means of the information contained therein. In other words, the use of the media player is restricted to the protected contents to which it has a valid activation key or keys. |
