Patent ID: 7908477
Filing Date: 2011-03-15
Classification: G06F

Abstract:
1. A method for protecting content from unauthorized access, which method comprises: identifying content at a content provider site, said identified content to be accessible by a plurality of client devices; retrieving a unique identifier of each of said plurality of client devices; transmitting said plurality of unique identifiers to said content provider site; binding at said content provider site, using an encryption key, a device identifier table, including said plurality of unique identifiers, with said identified content to create a protected content file; and downloading said protected content file to one of said client devices; extracting, at said one of said client devices, said device identifier table from said downloaded protected content file using said encryption key; determining, at said one of said client devices, whether an identifier associated with said one of said client devices is included among said plurality of unique identifiers in said device identifier table of said protected content file; and authorizing access to said protected content file based on said determination.