Data recording apparatus and method and data reproducing apparatus and method

摘要

A recording method for a recording medium, wherein an encrypting process is executed to inputted contents data by using either key data which becomes key data only for use of the recording medium by being recorded or fixed value data and, when an encoding process is executed to the encryption-processed data, if the key data which becomes the key data only for use of the recording medium by being recorded is used at the time of the encrypting process, the key data which becomes the key data only for use of the recording medium by being recorded is embedded, and the encoding-processed data is recorded onto the recording medium.