System and method for security of computing devices
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United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Jan 14, 2003
filing date -
Apr 9, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
System and method for securing a computing device using a master cryptographic key that is bound to the device. The master key is used to derive sensitive data that is transferred to storage that is only accessible in a restricted mode of operation. The master key is used to derive one or more application keys that are used to secure data that is specific to an application/device pair. Non-privileged programs can request functions that run in a more restricted mode to use these application keys. The restricted mode program checks the integrity of the non-privileged calling program to insure that it has the authority and/or integrity to perform each requested operation. One or more device authority servers may be used to issue and manage both master and application keys.
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