Copy protection system only authorizes the use of data if proper correlation exists between the storage medium and the useful data
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United States of America Patent
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Aug 27, 2002
Grant Date -
N/A
app pub date -
Dec 28, 1998
filing date -
Dec 28, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
The copy protection system and method combines the features of a conventional electronic data carrier with a dongle to form a secure storage medium. The storage medium has a unique identification, such as a device serial number. The host transmits a challenge signal to the storage medium and then checks the response received from the storage medium for a proper correlation between the useful data and the storage medium. A mismatch indicates that the data is present on a bootleg carrier instead of on its authorized carrier. Therefore, if the response signal in the challenge-response process does not correspond to the expected setpoint response, then the data are not authorized for processing.
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