Information processing device, information processing method, and computer program

An information processing device for recording input data in an information recording medium, the information processing device comprising:

• a data inputting unit that receives first and second input data, the first input data including common data and data obtained by replacing media specific data with dummy data, and the second input data including the media specific data, the common data including encrypted content, key information applied to decoding of the encrypted content, and content management information, data content of the common data being unchanged even if a medium as a data recording destination is changed, and data content of the media specific data being changed according to the medium as the data recording destination;
• and
• a data recording unit that records the first and second input data received via the data inputting unit in the medium, wherein
• the data recording unit records a file system image including the common data and the media specific data in the medium by recording the first input data in the medium, and then by overwriting or logically overwriting the second input data on top of the dummy data of the first input data.

An information processing method of outputting recording data to an information recording medium in an information processing device, the information processing method comprising:

• generating, in a media-specific-data generating unit, media specific data, data content of the media specific data being changed according to a medium as a data recording destination;
• acquiring, in an output-data generating unit, common data that includes encrypted content, key information applied to decoding of the encrypted content, and content management information, data content of the common data being unchanged even if the medium as the data recording destination is changed;
• generating first and second output data, the first output data including the common data and data obtained by replacing the media specific data with dummy data, and the second output data including the media specific data;
• and
• outputting, via a data outputting unit, the first and second output data generated in the generating the first and second output data.

An information processing method of recording input data in an information recording medium in an information processing device, the information processing method comprising:

• receiving first and second input data, the first input data including common data and data obtained by replacing media specific data with dummy data, the second input data including the media specific data, the common data including encrypted content, key information applied to decoding of the encrypted content, and content management information, data content of the common data being unchanged even if a medium as a data recording destination is changed, and data content of the media specific data being changed according to the medium as the data recording destination;
• and
• recording, via a data recording unit, the first and second input data in the medium, wherein
• the recording includes recording a file system image including the common data and the media specific data in the medium by recording the first input data in the medium, and then overwriting or logically overwriting the second input data on top of the dummy data of the first input data.

A non-transitory computer-readable medium having instructions recorded thereon that when executed by a processor cause the processor to perform steps comprising:

• generating, via a media specific data generating unit, media specific data, data content of the media specific data being changed according to a medium as a data recording destination;
• acquiring common data that includes encrypted content, key information applied to decoding of the encrypted content, and content management information, data content of the common data being unchanged even if the medium as the data recording destination is changed;
• generating, via a data generating unit, first and second output data, the first output data including the common data and data obtained by replacing the media specific data with dummy data, and the second output data including the media specific data;
• and
• outputting, via a data outputting unit, the first and second output data generated in the generating the first and second output data.

A non-transitory computer-readable medium having instructions recorded thereon that when executed by a processor cause the processor to perform steps comprising:

• receiving, via a data inputting unit, first and second input data, the first input data including common data and data obtained by replacing media specific data with dummy data, the second input data including the media specific data, the common data including encrypted content, key information applied to decoding of the encrypted content, and content management information, data content of the common data being unchanged even if a medium as a data recording destination is changed, and content data of the media specific data being changed according to the medium as the data recording destination;
• and
• recording, via a data recording unit, the first and second input data in the medium, wherein
• the recording includes recording a file system image including the common data and the media specific data in the medium by recording the first input data in the medium, and then overwriting or logically overwriting the second input data on top of the dummy data of the first input data.