| 摘要 |
A method, apparatus, and computer program product are disclosed for controlling copying and playback of digital data. Digital data is selected that is to be stored using a portable digital storage medium. Data that is stored using the medium is capable of being accessed only when the medium is inserted into a drive that can be accessed by a data processing system. During manufacturing of the medium: a unique identifier is stored within the medium where the unique identifier identifies only that one particular medium, a copy of the unique identifier is also stored in a tag that is affixed to a surface of the medium, a public key/private key pair is selected for encrypting and decrypting data where data that has been encrypted using the private key of the pair is capable of being decrypted using only the public key of the pair, the public key of the pair is stored within the tag, the digital data is encrypted using the private key of the pair, and the encrypted data is stored using the medium.
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