Video content tracking

摘要

Disclosed is an apparatus and method to determine usage rules for video content by buffer tracking. A computing device may include a secure processor configured to: store digital rights management (DRM) rules associated with a DRM key and usage rules for a session; command a cryptoprocessor to decrypt video content with the DRM key and to log an output buffer designation of the command to decrypt the video content. The secure processor may command a buffer tracking table to store the output buffer designation of the cryptoprocessor of the command to decrypt and the associated usage rules and a plurality of input and output buffer designations from a plurality of video content drivers, such that, based upon a buffer designation from an output driver to display video content received by the secure processor, the secure processor may determine usage rules to be applied to the decrypted video content for display.

主权项

1. A computing device comprising:
a secure hardware processor configured to:
store digital rights management (DRM) rules associated with a DRM key and usage rules for a session;command a cryptoprocessor to decrypt video content with the DRM key and to log an output buffer designation of the command to decrypt the video content;store the output buffer designation for the command to decrypt video content and the associated usage rules in a buffer tracking table;store a plurality of input and output buffer designations from a plurality of video content drivers in the buffer tracking table; anddetermine usage rules to be applied to the decrypted video content for display, based upon a received buffer designation from an output driver to display video content, wherein, based upon the stored output buffer designation of the cryptoprocessor and the plurality of input and output buffer designations of video content drivers stored in the buffer tracking table, an original buffer for DRM rules is determined that is associated with the usage rules to be applied to the decrypted video content.