Apparatus for encrypting and recording received content information on a recording medium using both medium identification information and a cipher key for encryption

摘要

A content recording method using a communication means, including reading from a recording medium identification information unique to that recording medium, receiving through the communication means permission information for permitting recording of content on that recording medium, receiving content information through the communication means, and after confirming validity of the permission information, encrypting the received content information using both the unique identification information and a cipher key, and recording the encrypted content information on the recording medium.