Flash update using a trusted platform module
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United States of America Patent
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Jan 27, 2009
Grant Date -
Feb 20, 2003
app pub date -
Aug 16, 2001
filing date -
Aug 16, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An update utility requests a signature verification of the utility's signature along with a request to unlock the flash memory stored in the utility. A trusted platform module (“TPM”) performs a signature verification of the utility using a previously stored public key. Upon verification of the signature, the TPM unlocks the flash memory to permit update of the utility. Upon completion of the update, the flash utility issues a lock request to the TPM to relock the flash memory.
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