DIGITAL LITERARY PRODUCTION RECORDING MEDIUM, RECORDING DEVICE ACCESSING SAME RECORDING MEDIUM, AND REPRODUCING DEVICE AND DELETING DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain the digital literary production recording medium which is digital literary production is recorded in optimum digital structure in terms of both security and use. SOLUTION: Digital literary production data ciphered by using different file keys by files are recorded as files and in ciphered file key fields 211 in file etries as management information for access corresponding to the files, ciphered file keys obtained by ciphering the file keys by using media characteristic keys as a key characteristic of the recording medium are recorded.