H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
H04N21/61—Network physical structure; Signal processing
H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
H04L2209/60—Digital content management, e.g. content distribution
Landscapes
Engineering & Computer Science (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Computer Security & Cryptography (AREA)
Computer Networks & Wireless Communication (AREA)
Storage Device Security (AREA)
AU2003222183A2002-04-122003-04-03Method and system for controlled internet distribution of digital mediaAbandonedAU2003222183A1 (en)