Production protection system dealing with contents that are digital production
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United States of America Patent
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Feb 3, 2004
Grant Date -
N/A
app pub date -
Oct 8, 1999
filing date -
Oct 16, 1998
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A data protection system obtains data having a first content on which a first encryption has been performed and a second content on which a second encryption has been performed, the second encryption more difficult to break than the first encryption. A first content decryption unit decrypts the first content, using a first encryption method corresponding to the first encryption of the first content. A second content decryption unit decrypts the second content using a second decryption method that corresponds to the second encryption. The decrypting contents can be executed by a software, and the second content decryption unit can include one of tamperproof hardware and an apparatus that executes tamperproof software.
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