| 摘要 |
A recording system and method, a recording device and method, an input device and method, a reproduction system and method, a reproduction device and method, a recording medium, and a program for protecting a content flexibly based on whether or not the content must be protected. When a mutual authentication unit (121) has already performed mutual authentication with an AV board (112) and a content received by the mutual authentication unit (121) has been encrypted with a common key, an input/output controller (122) judges that a content received via a bus (113) is to be protected on the bus (113) and, under control of a recording/reproduction processing unit (123), generates protection information "0", which indicates that the content should be protected on the bus (113), and records the generated protection information, as well as the content, on an optical disc (141). The present invention is applicable to an optical disc recording/reproduction device. |
