Information processing apparatus, information processing method, recording medium, and program
The present invention relates to an information processing apparatus, an information processing method, a recording medium, and a program for importing and exporting a content with information missing controlled. A CPU extracts a sound track contained in the content in step S 301 , and converts a format of the extracted sound track into a format compatible with a memory stick in step S 302 . The CPU generates a predetermined file from data contained in the content and excluding the sound track in step S 304 . In step S 306 , the CPU attaches reference information of the sound track to the file. In step S 307 , the CPU controls the writing of the sound track in the converted format and the file to the memory stick. The present invention is applied to clients of a DRM system.
1. An information processing apparatus for outputting content to a storage medium, comprising:
extracting means for extracting content data contained in the content, the content comprising the content data and separate attribute data for the content data;
converting means for converting a format of the extracted content data into a predetermined format compatible with the storage medium by encrypting the extracted content data with a key specific to the storage medium;
generating means for generating a message authentication code based on conditions of use for the extracted content data;
output means for outputting the extracted content data, the conditions of use for the extracted content data, and the message authentication code to the storage medium;
receiving means for receiving reference information indicating a position of the content data on the storage medium;
generating means for generating a file from the attribute data;
attaching means for attaching the reference information to the file; and
wherein the output means outputs the file to the storage medium.
2. An information processing apparatus according to claim 1 , further comprising write control means for controlling the writing of information, concerning a right of use required to use the content, to the storage medium.
3. The information processing apparatus according to claim 1 , wherein the attribute data includes a content ID.
4. The information processing apparatus according to claim 1 , wherein the attribute data includes a record company ID.
5. The information processing apparatus according to claim 1 , wherein the attribute data includes an artist ID.
6. The information processing apparatus according to claim 1 , wherein the key specific to the storage medium is received from the storage medium.
7. The information processing apparatus according to claim 1 , further comprising calculating means for calculating an integrity check value based on an index containing a pointer to the extracted content data, the conditions of use and the message authentication code.
8. An information processing method for outputting content to a storage medium, comprising:
extracting content data contained in the content, the content comprising the content data and separate attribute data for the content data;
converting a format of the extracted content data into a predetermined format compatible with the storage medium by encrypting the extracted content data with a key specific to the storage medium;
generating a message authentication code based on conditions of use for the extracted content data;
outputting the extracted content data, the conditions of use for the extracted content data, and a message authentication code to the storage medium;
receiving reference information indicating a position of the content data on the storage medium;
generating a file from the attribute data;
attaching the reference information to the file; and
outputting the file to the storage medium.
9. A recording medium storing a computer readable program for causing a computer to perform a method for processing information for outputting content to a storage medium, the method comprising:
extracting content data contained in the content, the content comprising the content data and separate attribute data for the content data;
converting a format of the extracted content data into a predetermined format compatible with the storage medium by encrypting the extracted content data with a key specific to the storage medium;
generating a message authentication code based on conditions of use for the extracted content data;
outputting the extracted content data, the conditions of use for the extracted content data, and the message authentication code to the storage medium;
receiving reference information indicating a position of the content data on the storage medium;
generating a file from the attribute data;
attaching the reference information to the file; and
outputting the file to the storage medium.