| 摘要 |
Techniques and systems for managing digital rights can be implemented to protect against unauthorized copying of digital content and to help ensure payment to content owners and distributors. Digital wrappers can be applied (310, 1020) to data files to prevent access (135, 340, 440) without a valid authorization. Information relating to authorizations to access data files and/or keys for accessing the data files may be stored and retrieved using data stored in a non-volatile storage area (220) of a user device (205). Software on the user device can be used to recognize files (110, 415) and to apply digital wrappers (310, 455, 1020) to recognized files. In addition, the software can be used to remove digital wrappers (360, 685, 770) from files in accordance with authorizations to access the files. Payments or other credits can be allocated (920, 940) among distributors of a data file using information associated with the digital wrappers. |
