| 摘要 |
A method of manufacturing digital data storage medium comprising the steps of: segmenting copyright material in digital form into consecutive segments, allocating each segment to a sector of the storage medium, pre-determining the position of each sector on the storage medium and using an algorithm to derive a unique encryption key for each sector according to the logical block address corresponding to the start of each sector, encrypting each sector using its unique key, and writing the encrypted data sectors to the said storage medium.
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