Patent ID: 7945052
Filing Date: 2011-05-17
Classification: G06F,H04L

Abstract:
1. A computer-implemented method for using a media article for providing access to encrypted secondary content to a client terminal, the method comprising: receiving encrypted secondary content at a client terminal; extracting a decryption key from a media article encoded with raw encrypted audio-video data (“REAVD”) operable to provide an audio-video output signal, the decryption key being determined by at least a portion of the REAVD encoding audio-video data; using a decryption key to decrypt the encrypted secondary content; and outputting the decrypted secondary content from the client terminal, wherein extracting the decryption key comprises extracting the decryption key being of a relatively massive size, wherein extracting the decryption key comprises extracting the decryption key being substantially equal in size to the secondary content.