发明授权
EP0817185B1 Enciphering method, deciphering method, recording and reproducing method, deciphering device, deciphering unit device, recording medium, recording-medium manufacturing method, and key control method 失效
加密方法,解密方法,记录和重放方法,解密装置,用于解密单元,记录介质,记录介质的制造方法以及密钥的控制方法

Enciphering method, deciphering method, recording and reproducing method, deciphering device, deciphering unit device, recording medium, recording-medium manufacturing method, and key control method
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