Inter-entity coupling method, apparatus and system for content protection

Inter-entity coupling method, apparatus and system for content protection

Disclosed is an inter-entity coupling method for protecting content in a broadcast environment including a broadcast network and a terminal, the broadcast network having a Broadcast Service Application (BSA), a Broadcast Service Distribution (BSD), and a Broadcast Service Management (BSM), the inter...

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1. Verfasser: LEE BYUNG-RAE,HWANG SUNG-OH,KIM WUK
Format: Patent
Sprache:eng
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ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
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creator LEE BYUNG-RAE,HWANG SUNG-OH,KIM WUK
description Disclosed is an inter-entity coupling method for protecting content in a broadcast environment including a broadcast network and a terminal, the broadcast network having a Broadcast Service Application (BSA), a Broadcast Service Distribution (BSD), and a Broadcast Service Management (BSM), the inter-entity coupling method including performing, by the terminal, a registration process for obtaining a group key for the terminal; after the registration process is completed, performing, by the terminal, a service joining process for requesting service joining, and receiving, by the terminal, a Rights Object (RO) about the content from a message, which is received in response to the request, based on the obtained group key; obtaining a traffic key by using the RO, if a traffic key message is received after the service joining process is completed; receiving encrypted content in the terminal; and decrypting the encrypted content by using the traffic key.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
title Inter-entity coupling method, apparatus and system for content protection
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