Method for protecting data stored within a disk drive of a portable computer
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United States of America Patent
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Aug 15, 2017
Issued Date -
N/A
app pub date -
Jul 13, 2015
filing date -
Jul 24, 2014
priority date (Note) -
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Abstract
A portable computer capable of protecting an encryption key that is sent out to a disk drive after a preboot process has ended is disclosed. The portable computer includes a disk drive for encrypting a volume as a whole, and for decoding data at the volume in response to a receipt of an encryption key from a system. The portable computer also includes a key transfer mechanism, a tamper detection mechanism and a protecting mechanism. In response to a boot process starting from a power-off state, the key transfer mechanism automatically sends the encryption key to the disk drive. The tamper detection mechanism detects a physical tampering of the disk drive. In response to a detection of a physical tampering by the tamper detection mechanism, the protecting mechanism prevents an operation of automatically sending the encryption key to the disk drive by the key transfer mechanism.
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