Data recovery method, image processing apparatus, controller board, and data recovery program
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United States of America Patent
Stats
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Oct 16, 2012
Grant Date -
Sep 18, 2008
app pub date -
Mar 14, 2008
filing date -
Mar 16, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A disclosed data recovery method, image processing apparatus, controller board, and data recovery program enable data stored encrypted in a storage unit within an information processing apparatus to be recovered when an internal encryption key of the apparatus becomes unavailable. A first encryption key is stored in a secure memory, a second encryption key is stored in a first storage unit, and data is stored in a second storage unit. The second encryption key is decrypted with the first encryption key. The second encryption key is backed up outside the information processing apparatus as a backup key, such as by printing it on a sheet with a plotter. When the first encryption key becomes unavailable, the backup key is restored back in the information processing apparatus. The data stored in the second storage unit is then decrypted with the restored backup key.
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