Abstract:
A method of providing DRM content, including transmitting, by a content issuer, when a request for a specific main content of a communication terminal is input, a DRM content including the main content and a preset sub-content corresponding to the main content to the communication terminal; transmitting, by a rights issuer, a rights object having constraint condition information for securing reproduction of the sub-content to the communication terminal; and reproducing, by the communication terminal, when the DRM content and the rights object are received, the sub-content by analyzing the rights object and reproducing, when reproduction of the sub-content is complete, the main content. Reproduction of a sub-content in a communication terminal can be secured through constraint condition information of a rights object, and waste of resources required for providing a sub-content can be suppressed.
Abstract:
A system and method for managing non-free multimedia contents in an intranet. The system includes proxy managers provided in a server of the intranet, for example, a media center or set-top box, and clients, for example, DRM smart clients in wired/wireless digital information appliances, such as Digital TVs or PDAs. Various kinds of encrypted multimedia contents and license information are converted by the proxy managers into multimedia contents and license information having a format executable by the DRM smart clients.
Abstract:
A method and apparatus for managing tokens for Digital Rights Management (DRM) in a terminal are provided. In the method, at least one token is acquired from a Rights Issuer (RI), and the token is moved to a Secure Removable Media (SRM) through a token move request message. The token can be shared by several terminals.
Abstract:
A method of updating software of terminals in a mobile broadcast system is provided. The method includes creating an update command for terminals of a particular model, the update command including update information; and broadcasting the created update command. The update information includes software version information and at least one of terminal manufacturer information and terminal model information. Further, the method may further include, before broadcasting the created update command, forcibly requiring terminals subscribe to an update service; and creating and broadcasting an update file for terminals of the particular model from among the forcibly subscribed terminals. The software of the terminals may be firmware.
Abstract:
A license consignment method and system for a portable device playing a right-protected content with a license is provided for improving utilization reliability and manageability of a license by enabling a license server to manage the license consigned by the portable device. The method includes selecting a license to be consigned to a license server, transmitting the license server license information corresponding to the selected license, and transmitting, when the license is not downloaded in a certain time, a download trigger message to the portable device.
Abstract:
An apparatus, system and method for giving and taking an RO for a content between devices are provided. The provided method includes both a method for directly giving and taking the RO between devices and a method for giving and taking the RO through a network server. Accordingly, the apparatus, system and method provide the capability of giving and taking an RO between respective devices and improve the ability expand functions.
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.
Abstract:
A method and apparatus for managing digital rights of a portable storage device are provided. The method comprises a device performing authentication together with the portable storage device and sharing an encryption key with the portable storage device as a result of the authentication, requesting a rights object list from the portable storage device, receiving the rights object list from the portable storage device, and processing and displaying the rights object list.
Abstract:
A terminal and method for receiving a broadcast service by the terminal in a broadcast system are provided. The method includes performing a registration procedure for subscription and reception of the broadcast service through a Browser And Content Mobile Broadcast (BSCAST) Subscription Management (BSM) responsible for managing subscription information; receiving a Long Term Key Message (LTKM), including key information for encryption of the broadcast service, generated from the BSM; receiving a completed Short Term Key Message (STKM), the completed STKM being generated by performing Message Authentication Code (MAC) processing on a partially created STKM; receiving, from a Broadcast Service Distribution/Adaptation (BSD/A) which is responsible for transmitting the broadcast service, an encrypted broadcast service which is encrypted by a Traffic Encryption Key (TEK) for deciphering the broadcast service; and deciphering the encrypted broadcast service by the TEK obtained using the LTKM and the completed STKM.
Abstract:
A method and apparatus for using a non-volatile storage device includes reading device identification information from the non-volatile storage device, application identification information corresponding to a content application related to a type of content to be protected or utilized among a plurality of content applications is acquired, usage identification information is generated using the device identification information and the application identification information, and protecting or utilizing content using the usage identification information.