Canon imageRUNNER ADVANCE C5255 Series Service Manual page 53

2
Technology > Controller System > Controls > Security Features (Encryption Key, Certificate, Password Protection)
● Works before / after introduction
Execute the following in Setting / Registration mode ("TPM setting" is OFF by default).
1. Enable the feature
2. Backup the TPM key
3. Restore the TPM key
4. Disable the feature
The works above are basically done by users.
CAUTION:
When the TPM setting is set to "ON", advice users on the following:
Back up the TPM key swiftly after the setting is ON
Keep the password used at backup securely
Never lose the USB flash drive with the backup TPM key file saved
The TPM key should be restored after the TPM PCB is replaced due to failures or the
like.
(TPM key restoration is enabled only at TPM PCB replacement.)
Unless the key is restored, the security information (passwords, encryption key, and
certificates) cannot be used.
When the key restoration is failed due to the USB flash drive lost or others, "Initialize All
Data / Settings" should be executed to reactivate TPM functionality. The security may
be undermined if the old Setting / Registration data are maintained as it is.
2 Technology > Controller System > Controls > Security Features (Encryption Key, Certificate, Password Protection)
1. Enable Functionality
MEMO: Setup of "System Management PIN"
It is recommended for users (administrators) to set the system management PIN
before installing TPM. The TPM key is backed up after the TPM setting is set to "ON".
However, the key backup is permitted only once. Unless the key is properly backed up,
users other than administrators may illegally obtain the backup file. To avoid such risks
effectively, the system management PIN should be set.
1)Set Management Setting > Data Management > TPM Setting to "ON".
Setting / Registration
2) Click "Yes", and restart the machine.
This setting is enabled after the machine is restarted.
2-15
F-2-24
F-2-25
2-15