摘要:
A terminal apparatus is provided which can guarantee operation of a use condition bytecode while securing the degree of freedom for a service provider generating the use condition bytecode. A terminal apparatus (300), in which a license (1200) includes a use condition determining logic code (1204) and a version number (1202), includes a license obtainment unit (304) which obtains the license (1200), a use condition verification unit (302) which determines, based on the version number (1202), whether or not the operation of the use condition determining logic code (1204) has been confirmed, a use condition bytecode execution unit (303) which executes the use condition determining logic code (1204) when the operation of the use condition determining logic code (1204) has been determined to have been confirmed, and a content playback unit (306) which playbacks content based on the use condition determining logic code (1204).
摘要:
A terminal apparatus is provided which guarantees operation of a use condition bytecode while securing a degree of freedom for a service provider generating the use condition bytecode. A terminal apparatus (300), in which a license (1200) includes a use condition determining logic code (1204) and a version number (1202), includes a license obtainment unit (304) obtaining the license (1200), a use condition verification unit (302) determining, based on the version number (1202), whether or not an operation of the use condition determining logic code (1204) has been confirmed, a use condition bytecode execution unit (303) executing the use condition determining logic code (1204) when the operation of the use condition determining logic code (1204) has been determined to have been confirmed, and a content playback unit (306) playing back content based on the use condition determining logic code (1204).
摘要:
A content distribution management system includes a plurality of content distributing devices, which each include a content storage processing unit operable to store and distribute a content, a user interface unit operable to provide viewing and information of a content for a user, a content acquisition processing unit operable to acquire a content from a content providing device, etc. and to perform purchase processing of the content, and a sending/receiving unit operable to exchange data via a communication network. The content distribution management system also includes a content distribution management device, which includes a payment management processing unit operable to perform payment processing of a content, and a copyright management processing unit operable to manage and send copyright-related information (a usage rule, key information, etc.). The content distributing devices and the content distribution management system are configured via the communication network, etc.
摘要:
A management device of a license management system acquires a usage request of a content from an SD card or a printer via a relay device, analyzes the acquired usage request, acquires usage environment information of the SD card or the printer from the relay device, analyzes the acquired usage environment information, generates license information including a usage rule corresponding to the analysis results of the usage request and the usage environment information, generates instruction information indicating how to handle the license information in the relay device based on the analysis result of the usage environment information, embeds the generated instruction information in the license information, and sends the license information to the relay device. The relay device receives the license information in which the instruction information is embedded, and transfers the received license information to the SD card or the printer according to the instruction information which is embedded in the license information with performing certain processing or without performing any processing to the license information.
摘要:
The transmission format A license conversion unit (430) of the terminal device (120) converts the transmission format license (710), which is obtained from the license relay server (110), described in a transmission format into a processing format license (510) to be specified by the conversion format specification information (711) and detects modifications on the license whose format has already been converted by performing a signature verification on the after-conversion processing format license (510) using a processing format signature (712).
摘要:
To provide a content distribution system which can prevent use of content which has been temporarily stored after the valid period.A content distribution system (1) including a license server (101) which issues a license, a content server (102) which transmits the content, a terminal device (103) which controls use of the content based on the issued license. The terminal device (103) does not allow the use of the received encrypted content when it is judged that the encrypted content received from the content server (102) is not the content received in real time.
摘要:
The present invention provides a rights management terminal that can securely send and receive usage information while preventing spoofing and protecting user's privacy. The rights management terminal manages a copyright of a content using a license that includes a usage rule of the content, and includes: a first public key certificate management unit which manages, as a set, a first public key certificate that includes identification information for uniquely identifying at least one of the rights management terminal and a user using the terminal, and a first private key paired with a first public key included in the first public key certificate; a second public key certificate management unit which manages, as a set, a second public key certificate that does not include the identification information, and a second private key paired with a second public key included in the second public key certificate; a selection processing unit that selects, as a set, one of the following: the first public key certificate and the first private key; and the second public key certificate and the second private key; and an authentication processing unit that executes authentication for communicating with a server apparatus, using the public key and the private key that are selected as a set by the selection processing unit.
摘要:
A broadcast station that is a transmission device assigns an ID and a license transformation period to a license to be generated, and transmits to a terminal apparatus 102, in order to provide a digital right management system which can provide a protection for the rights of a provider while preventing an unauthorized obtainment of a license to be transmitted through a digital broadcast. The terminal apparatus 102 records a license import log including the license ID and license transformation period assigned to the license. Further, the terminal apparatus 102 controls a license obtainment in the case where the same license has been obtained by the time of obtaining the license. Furthermore, the license received by the terminal apparatus 102 is kept at least until the license transformation period expires.
摘要:
To provide a content distribution system which can prevent use of content which has been temporarily stored after the valid period.A content distribution system (1) including a license server (101) which issues a license, a content server (102) which transmits the content, a terminal device (103) which controls use of the content based on the issued license. The terminal device (103) does not allow the use of the received encrypted content when it is judged that the encrypted content received from the content server (102) is not the content received in real time.
摘要:
To reduce a frequency of recording communication management information for communication disconnection countermeasure. A digital content distribution system includes a license server (101) that issues a license, and a user terminal (103) that controls use of content based on the issued license. The license server (101) judges, according to the license to be issued, whether or not the communication management information for the communication disconnection countermeasure needs to be recorded, and notifies the user terminal of a result of the judgment. This enables the user terminal (103) to reduce the frequency of recording the communication management information.