摘要:
According to one embodiment, an information processor includes a management module that manages a plurality of register areas in a host controller for processing data protected by copyright. The register areas store confidential information for copyright protection. The management module includes a use state management module and a release module. The use state management module manages use state information on whether the register areas are used by existing process tasks. When all the register areas are occupied by the existing process tasks and a new process task requests for the use of a register area to perform a process based on the confidential information, the release module releases a register area occupied by one of the existing process tasks according to the use state information to assign the register area to the new process task.
摘要:
According to one embodiment, an electronic device including, a communication module configured to transfer data, a controller configured to transmit data to the second electronic device through the communication module, and configured to temporarily hold the data in a receiving buffer of the second electronic device, and a data controller configured to receive free space information of the receiving buffer of the second electronic device from the second electronic device through the communication module, and configured to prepare data, which is transmitted to each mobile medium from the communication module through the second electronic device, based on the received free space information.
摘要:
According to one embodiment, an electronic apparatus includes a first module and a second module. The first module receives a remote command from another electronic apparatus and transmits a response to the remote command to the other electronic apparatus. The remote command includes command type information indicating a type of the local command. The second module issues one or more local commands including the local command to the storage device and transmits a first response from the storage device to the other electronic apparatus by storing the first response into a second response to the remote command, in accordance with a process specified by the command type information in the remote command.
摘要:
An information terminal according to this invention includes a storage means having a first storage area which is accessible from an external terminal, and a second storage area which is inaccessible from the external terminal. Content which includes a content body and rights information indicating a use condition given to the content body is acquired. The acquired content is encrypted and the encrypted content is stored in the first storage area. In addition, state management information used to manage the variable state of the use condition given to the content body is generated on the basis of the rights information included in the acquired content, and the generated state management information is stored in the second storage area.
摘要:
In a first terminal serving as rights assignment source, an encoding binding state of a key encoding key included in a rights object is converted from a bind using a binding key of the first terminal and a bind using a domain key. Then, the rights object including the thus bound converted key encoding key is transferred to a second terminal serving as rights assignment destination together with encoded contents, and further, the above domain key is transferred to the second terminal via a secure session.
摘要:
A download control program of a client terminal transmits a request to a download server, which stores Download Descriptors that include attribution information of contents, for a Download Descriptor, and receives the Download Descriptor from the download server. The download server, before transmitting the Download Descriptor to the client terminal, adds information indicating that there is a difference between a Download Descriptor contained in the request from the client terminal and the Download Descriptor stored in data memory of the download server if the download server detects the difference between them. The client terminal transmits a content download request to a contents server based on the received Download Descriptor.
摘要:
According to one embodiment, an electronic device including, a communication module configured to transfer data, a controller configured to transmit data to the second electronic device through the communication module, and configured to temporarily hold the data in a receiving buffer of the second electronic device, and a data controller configured to receive free space information of the receiving buffer of the second electronic device from the second electronic device through the communication module, and configured to prepare data, which is transmitted to each mobile medium from the communication module through the second electronic device, based on the received free space information.
摘要:
According to one embodiment, a host computer updates the media key block MKB in a first updatable memory device in the case where the version number of the media key block MKB read from a recording medium is newer than that of the media key block MKB in the first updatable memory device. The host computer generates a medium unique key Kmu based on a media key Km calculated from the media key block MKB read from the recording medium and a media ID read from the recording medium. The host computer executes the authentication and key exchange AKE process with the recording medium based on the medium unique key Kmu.
摘要:
When content owned by a source device are played back in a rendering device, a content key is transferred from the source device to the rendering device via a secure session every time playback is carried out. Then, encoded content are decoded and played back to be outputted by using the transferred content key so as to discard the content key after the end of playback.
摘要:
According to an aspect of the invention, there is provided a content sharing system including a first device configured to acquire a right object; a second device configured to acquire a content of the right object from the first device; a session key generation unit provided in the first device and the second device and configured to generate a session key based on mutual authentication; a temporary right object generation unit provided in the first device and configured to generate a temporary right object from the right object by using the session key to supply the generated temporary right to the second device; and a content play unit provided in the second device and configured to receive the temporary right object to play the content of the right object acquired from the first device by using the temporary right object.