Invention Grant
- Patent Title: Information processing apparatus capable of backing up and restoring key for data encryption and method for controlling the same
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Application No.: US15863094Application Date: 2018-01-05
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Publication No.: US10402346B2Publication Date: 2019-09-03
- Inventor: Akari Yasukawa
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: JP2014-249410 20141209
- Main IPC: G06F21/00
- IPC: G06F21/00 ; G06F12/14 ; H04L9/08 ; G09C1/00

Abstract:
An information processing apparatus includes a storage device configured to store data, an encryption chip configured to store an encryption key therein, a nonvolatile memory configured to store a backup encryption key, and a control unit configured to confirm whether the data stored in the storage device has been correctly decrypted by using the encryption key, and when the data has not been correctly decrypted, restore the backup encryption key to the encryption chip, and when the data has been correctly decrypted, back up the backup encryption key, which is a backup of the encryption key, stored in the encryption chip into the nonvolatile memory.
Public/Granted literature
Information query