Reproducing method, reproducing apparatus, recording method, and recording apparatus

A recording apparatus, comprising:

• means for searching for at least one of a plurality of free areas on a storage medium, said storage medium including a file that is stored according to a file system;
• means for generating a track descriptor having a track as an attribute and an encryption key to encrypt a data to be stored as an encrypted data in said storage medium;
• means for generating a part descriptor having a part pointer information that points to said file;
• means for recording said data encrypted with said encryption key in said at least one of said plurality of free areas;
• means for connecting said at least one of said plurality of free areas where said encrypted data is recorded to an end of said file managed by said file system;
• means for recording in said part descriptor the part pointer information that points to said at least one of said plurality of free areas where said encrypted data being recorded;
• means for recording in said track descriptor a decryption key so as to enable later decryption of said encrypted data, and pointer information that points to said part descriptor;
• and
• means for recording a track number that points to said track descriptor in a play order table having a play order of a plurality of tracks.

A recording apparatus, comprising:

• a searching unit configured to search for at least one of a plurality of free areas on a storage medium, said storage medium including a file that is stored according to a file system;
• a track descriptor generating unit configured to generate a track descriptor having a track as an attribute and an encryption key to encrypt a data to be stored as an encrypted data in said storage medium;
• a part descriptor generating unit configured to generate a part descriptor having a part pointer information that points to said file;
• a first recording unit configured to record said data encrypted with said encryption key in said at least one of said plurality of free areas;
• a connection unit configured to connect said at least one of said plurality of free areas where said encrypted data is recorded to an end of said file managed by said file system;
• a second recording unit configured to record in said part descriptor the part pointer information that points to said at least one of said plurality of free areas where said encrypted data is recorded;
• a third recording unit configured to record in said track descriptor a decryption key so as to enable later decryption of said encrypted data, and pointer information that points to said part descriptor;
• and
• a fourth recording unit configured to record a track number that points to said track descriptor in a play order table having a play order of a plurality of tracks.