| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for making copy protection that cannot be subverted by a bit-for-bit copying scheme on standard CD-writers. SOLUTION: This invention provides a copy-protected optical disk, including a pre-formed ID, which is impressed upon the optical disk during optical disk manufacture, a unique ID which was written on the optical disk after it is manufactured, and an encrypted program written onto the optical disk wherein the encryption of such program is based upon the performed ID and the unique ID.</p> |
