Content recording/playback apparatus

The content composed of plural files is configured so as to provide the entire content and the files for composing the content with the usage restriction information. The content file group management file for managing the file group composing the content, the package management file for managing the files as an integrated package, and the key and usage restriction information recorded in the protected region of the recording medium are provided, and the corresponding relation of the file and package, and the key and usage restriction information is recorded in the content file group management file and package management file, and the usage restriction information is recorded either in each file or the entire content depending on the content, so that the unit of provision/reference of the usage restriction information may be used flexibly and selectively depending on the attributes of the content or the status of use.