Inter-entity coupling method, apparatus and system for content protection
First Claim
1. 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 comprising:
- performing, by the terminal, a registration process for obtaining a group key for the terminal;
requesting a service joining process by the terminal;
receiving, by the terminal, in response to the service joining request, a message including a Rights Object (RO) corresponding to the content and being based on the obtained group key;
obtaining a traffic key 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 using the traffic key.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
-
Citations
35 Claims
-
1. 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 comprising:
-
performing, by the terminal, a registration process for obtaining a group key for the terminal;
requesting a service joining process by the terminal;
receiving, by the terminal, in response to the service joining request, a message including a Rights Object (RO) corresponding to the content and being based on the obtained group key;
obtaining a traffic key 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 using the traffic key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An inter-entity coupling method for protecting content in a broadcast environment including a broadcast network and a terminal, the broadcast network including a Broadcast Service Application (BSA), a Broadcast Service Distribution (BSD), and a Broadcast Service Management (BSM) the inter-entity coupling method comprising:
-
receiving, in the BSM, a registration request message from the terminal;
transmitting, from the BSM to the terminal, a registration response message including a group key corresponding to a group to which the terminal belongs;
obtaining, by the terminal, the group key from the received registration response message;
requesting joining in a service by the terminal;
generating and transmitting, by the BSM, a message including a Rights Object (RO) corresponding to the service;
obtaining, by the terminal, the RO about the service from the received message by using the group key;
transferring, from the BSM to the BSA, a traffic key for encrypting content;
receiving, in the terminal, a traffic key message;
obtaining, by the terminal, the traffic key from the traffic key message by using the RO;
receiving, in the BSA, content from a content provider;
encrypting the received content using the traffic key;
transmitting the encrypted content to the terminal; and
decrypting, by the terminal, the encrypted content using the traffic key. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. An inter-entity coupling system for protecting content in a broadcast environment, the inter-entity coupling system comprising:
-
a terminal;
a content provider for generating content and transferring the generated content;
a Broadcast Service Application (BSA) for encrypting the content using a traffic key, and transmitting the encrypted content to the terminal through a Broadcast Service Distribution (BSD);
a Broadcast Service Management (BSM) for performing a registration process and a service joining management process with the terminal, and generating a traffic key message including a traffic key used for encrypting the content;
the BSD for receiving the traffic key message from the BSM and transmitting the received traffic key message to the terminal; and
wherein the terminal obtains the traffic key using a Rights Object (RO) acquired at a service joining when the traffic key message is received, and decrypts the encrypted content using the obtained traffic key. - View Dependent Claims (21, 22, 23, 24, 25, 26, 28, 29, 30, 31)
-
-
32. An inter-entity coupling system 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 terminal comprising:
-
a first component for receiving an encrypted stream content from the BSD;
a second component for receiving an encrypted file content and at least an encryption key from the BSD;
a third component for encrypting the encrypted content transmitted from the BSD;
a fourth component for transmitting at least an encryption key received from the BSM to the third component;
wherein the fourth component performs a registration process and a service joining process.
-
-
33. An inter-entity coupling terminal apparatus for protecting content in a broadcast environment including a broadcast network and the terminal, the broadcast network including a Broadcast Service Application (BSA), a Broadcast Service Distribution (BSD), and a Broadcast Service Management (BSM), the inter-entity coupling terminal apparatus comprising:
-
a Digital Rights Management (DRM) module for managing a registration, service joining, and use of content;
a communication module for exchanging a message with the BSM, and receiving a traffic key message and an encrypted service from the BSD; and
an authentication module for obtaining at least an encryption key by verifying a message received from at least one of the BSM and the BSD. - View Dependent Claims (34, 35)
-
Specification