Patent ID: 9185094
Filing Date: 2015-11-10
Classification: H04L,H04N,Y04S

Abstract:
1. A method for distributing media content for restricted use, comprising: receiving a request for the media content from a user device, the request comprising a content identifier identifying the media content, a user identifier identifying a user requesting the media content, a display device identifier identifying a display device coupled to the user device, a nonce and a requested time period for the media content; determining that the user is authorized to receive the media content; generating a first time duration restriction associated with the user and the media content, the first time duration restriction being generated based on the requested time period to represent a rental period of the media content to the display device; generating, on a media distribution center, an association encryption envelope to hold the nonce and the first time duration restriction, wherein the association encryption envelope includes a symmetric key to encrypt the media content and the symmetric key is associated with a combination of the user identifier and the content identifier, and wherein the association encryption envelope further includes parameters regarding a maximum permissible error drift which, when approached, prompts the display device to seek a forced association; encrypting the media content; and transmitting the encrypted media content and the association encryption envelope to the user device.