CONTROLLING ACCESS TO DEVICE-SPECIFIC INFORMATION
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United States of America Patent
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N/A
Issued Date -
Aug 9, 2007
app pub date -
Jun 1, 2006
filing date -
Apr 16, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method for providing access to device-specific information includes providing a first value to the device, and then, in the device, using a second value that is a first one-way function of the provided first value to determine a third value such that the third value is a device-specific function of the second value. The third value is then accepted from the device and stored outside the device. Subsequent to accepting the third value from the device, the second value is provided to the device. In the device, the provided second value is used to determine the third value once again and a fourth value is determined that is a second one-way function of the third value. This determining of the fourth value is performed without disclosing the third value outside the device. The fourth value is accepted from the device.
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