Transferring copyright protected contents using radio link layer authentication/encryption

摘要

A transmitting device (101) for transmitting copyright protected contents data to a receiving device (102) through radio communications, the transmitting device (101) comprising:a first key sharing unit (13) configured to share a first encryption key with the receiving device (102);   characterised by:an authentication unit (16) configured to carry out an authentication with the receiving device (102), for protecting copyright of the contents data to be transmitted, through an encrypted radio communication using the first encryption key;a second key sharing unit (16) configured to generate a second encryption key and share the second encryption key with the receiving device (102) when the authentication with the receiving device (102) by the authentication unit (16) is successful; anda communication unit (11, 12, 15, 17) configured to transmit the contents data to the receiving device (102) through an encrypted communication path which is encrypted by using the second encryption key and provided on the radio link layer.