System, method, apparatus and program for recording medium, a recording device, input device, input method, and program for an input device, a system, aMethod and apparatus for reproduction, and reproduction apparatus, program for a

摘要

Method, apparatus and system, recording medium, program for recording device, input device, input method, and program for an input device, a system, aMethod and apparatus for reproduction, and program for a reproduction apparatus.The present invention relates to a system and method of recording device and recording method, device and input method, system and reproduction method, apparatus, and reproduction method.Recording medium, and a program in which content can be flexibly protected based on whether or not the content should be protected.When mutual authentication is conducted with the plate AV 112 by a mutual authentication unit 121, and when the input of the content in the unit of mutual authentication with key 121 is encrypts aAnd common input / output, a controller 122 determines the content to be entered via a bus 113 should be protected on the bus 113.The controller input / output 122 controls, then, a processor for recording / playback 123 for generating information of protection ''.Indicating that the content should be protected on the bus 113, and stores the information of the protection generated on a optical disk 141 together with the content.The present invention could be applied to an apparatus for recording / reproduction of optical disk.