Digital certificates in a recoding medium

The present invention relates to an authentication method in a digital recording medium using, and more particularly to a public key encryption scheme (Public Key Infrastructure) relates to a digital authentication method and the authentication method is stored in a recording medium of the recording medium. The present invention is characterized in that for the digital certificate of the storage medium, decrypting the authentication information and the stored public key certificate is encrypted and authenticated through the authentication information and the public key obtained by the decryption. In addition to the digital certificate of the recording medium on a network, authentication information, and receives a certificate generated by encrypting the public key via a network, and decrypts the encrypted certificate is received, the authentication information and the public key obtained by the decryption that through the authentication features. Digital certificates, recording media, Blu-ray Disc