| http://www.w3.org/ns/prov#value | - The user device 220 then decrypts the content key with the session key, and decrypts the encrypted content by using the decrypted content key. [0232] Subsequently, the service provider 240 creates the receive log 253 including the receive information, such as the content usage fee payer and the received date, based on the usage log 252 received from the user device 220, and then sends the receive
|
