Encrypting Data on the Hard Disk
This can be specified by the machine administrator. For details about logging in and logging out with
administrator authentication, see p.30 "Logging in Using Administrator Authentication" and p.32 "Logging
out Using Administrator Authentication".
Prevent information leakage by encrypting the Address Book, authentication information, and stored
documents as the data is written. In addition, if the machine malfunctions or needs to be replaced, your
service representative can easily transfer existing data to a new machine.
When the data encryption settings are enabled, an encryption key is generated and this is used to restore
the data. This key can be changed at any time.
Data that is encrypted
This function encrypts data that is stored in the machine's NVRAM (memory that remains even after
the machine has been turned off) and on the hard disk.
The following data is encrypted:
• Address Book data
• User authentication information
• Data stored in Document Server
• Temporarily stored document data
• Logs
• Network I/F setting information
• System settings information
Data that will not be encrypted
• Document data stored using printer function
Enabling the Encryption Settings
If you specify [Format All Data] to enable encryption when first setting up the machine, the encryption
setting procedure will take only several minutes. Note that all data stored on the hard disk will be initialized
when this setting is specified.
The table below describes which data will be kept and which data will be initialized when [Format All
Data], [File System Data Only], or [All Data] is specified.
Setting Data to be kept
Data not kept (Data to be
initialized)
Required time
Format All Data None All Data Several minutes
5. Securing Information Sent over the Network or Stored on Hard Disk
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