Patent ID: 7356838
Filing Date: 2008-04-08
Classification: G06F,G06Q,H04L,H04N

Abstract:
1. A method for controlling access to a media file, the method comprising: generating a first authorization ticket at a first time in response to a request to access the media file from a user; generating a second authorization ticket at a second time; determining whether the first and the second authorization tickets match thereby determining whether the user is authorized to access the media file; generating a first hash at a third time, the first hash based upon the determining whether the authorization tickets match and upon data; generating a second hash at a fourth time, the second hash based upon the data; determining whether the first hash and the second hash match, wherein a match of the first and second hashes indicates the user as having been authorized; and permitting the user access to the media file if the first and second hashes match; wherein: