Recording medium for storing encrypted audio data, apparatus for and method of recording the same, and apparatus for and method of reproducing the same

A recording apparatus comprising:

• a first encryptor which encrypts input moving picture data;
• a second encryptor which encrypts input audio data;
• and
• a recording processor which records the encrypted audio data and moving picture data in a predetermined format in a video region of a recording medium, and records reproducing management information for reproducing the encrypted audio data and/or the moving picture data, in a predetermined region of the recording medium.

An apparatus for reproducing a recording medium having separate regions, a video region and an audio region, moving picture data and audio data recorded in the video region, and reproducing management information recorded in a predetermined region and used to reproduce the moving picture data and/or the audio data, the reproducing apparatus comprising:

• a reproducing processor which reads the reproducing management information from the recording medium, analyzes whether the audio data and/or the video data recorded on the recording medium are encrypted, determines the encryption method based on the read reproducing management information, and reads the moving picture and/or the audio data from the recording medium;
• a first decryptor which decrypts the moving picture data read from the recording medium, according to information on whether the data is encrypted and the encryption method determined by the reproducing processor;
• and
• a second decryptor which decrypts the audio data read from the recording medium, according to information on whether the data is encrypted and the encryption method determined by the reproducing processor.

A method of reproducing a recording medium having separate video and audio regions, the video region having moving picture data and encrypted audio data recorded therein and a predetermined region having reproducing management information recorded therein, the reproducing management information used to reproduce the moving picture data and/or the audio data, the reproducing method comprising:

• reading the reproducing management information from the recording medium;
• analyzing whether the audio data recorded on the recording medium is encrypted and determining the encryption method, based on the reproducing management information read from the recording medium;
• reading the audio data from the recording medium;
• decrypting the audio data read from the recording medium, according to the determined encryption method if the audio data is encrypted;
• and
• decoding the decrypted audio data.

A data structure for a recording medium, the data structure comprising:

• a first region comprising:
• moving picture information,
• first audio information corresponding to a sound sequence and associated with the moving picture information, and
• second audio information corresponding to the sound sequence, encrypted according to a first specification and associated with the moving picture information;
• a second region comprising third audio information corresponding to the sound sequence and encrypted according to a second specification;
• and
• reproducing management information which enables reproduction of any of the third audio information, a combination of the third audio information and the moving picture information, a combination of the moving picture information and the first audio information and a combination of the moving picture information and the second audio information.