Methods and systems of protecting digital content
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United States of America Patent
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Jun 20, 2006
Issued Date -
N/A
app pub date -
Aug 11, 2000
filing date -
Aug 13, 1999
priority date (Note) -
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Abstract
Methods and systems are described that enable protection of digital content, such as movies and the like, by making pirated copies traceable back to a unique decryption key that was utilized to decrypt the originally encrypted content. Various embodiments can intrinsically link any unauthorized copies back to a unique cryptographic key or key collection that was used when the genuine copy was reproduced.
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