A protected content distribution system utilizes media-based copy
protection to support online distribution of protected content in a
secure and legitimate fashion. Using a media-based copy protection scheme
based on broadcast encryption, the protected content distribution system
realizes online distribution of protected content such as, for example
audio files, movies, etc, authorizing consumption of unlicensed content
by transfer of a unique encrypted key to the protected media. This
transaction is fast, involving the transfer of an encrypted binding key
rather than the protected content. Content is enabled through a unique
encrypted key on protected media accessed through a device separate from
the media driver.