Encryption key restoring method, information processing...

Details Encryption key restoring method, information processing... Encryption key restoring method, information processing...

2011-04-19

2011-04-19

Zand, Kambiz (Department: 2434)

Cryptography

Key management

Key escrow or recovery

C380S277000

Reexamination Certificate

active

07929706

ABSTRACT:
A disclosed encryption key restoring method enables restoration of an encryption key in the event of inability to use the encryption key stored in a secure memory of an information processing apparatus, in which data encrypted by the encryption key is stored in an internal storage unit. A disclosed information processing apparatus includes a key management module that checks the validity of the encryption key. If the encryption key is not valid, the key management module acquires a restore key for the encryption key from outside the information processing apparatus, and checks the validity of the restore key. If the restore key is valid, the key management module stores it in the secure memory, and reboots the information processing apparatus in a normal mode.

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