INFORMATION RECORDING MEDIUM, INFORMATION RECORDING DEVICE AND METHOD, INFORMATION DISTRIBUTION DEVICE AND METHOD, AND COMPUTER PROGRAM

摘要

An information recording device (300) transmits first area information (510) from an information recording medium (100) to an information distribution device (200). The information distribution device acquires an encryption key from the first area information transmitted from the information recording device and encrypts the recorded information (content). The information distribution device distributes the encrypted recorded information (encrypted content) and second area information (520) corresponding to the first area information to the information recording device. When the first area information coincides with the second area information, the information recording device records the distributed encrypted recorded information and the second area information on the information recording medium.