Canon imageRUNNER ADVANCE DX C7700 Series, Руководство по обслуживанию

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Canon
imageRUNNER ADVANCE DX C7700 Series Service Guide
imageRUNNER ADVANCE DX C7700 Series Service Guide April 2022
Revision 4 Page 29
2. TPM (Trusted Platform Module)
TPM is a standard security chip (tamper resistant hardware) installed in the
imageRUNNER ADVANCE DX C7700 Series machines. The TPM
provides a facility for the secure generation of cryptographic keys, encrypts
information stored on the internal HDD, and decrypts information read from
the internal HDD. The public keys to encrypt confidential information are
securely controlled by the TPM chip, and they can only be decrypted if the
TPM releases the associated decryption key. If the HDD is removed from
the machine, it will be difficult to retrieve data off that HDD since the
encryption key for that data is stored in a separate location within the TPM.
CAUTION
Once the TPM setting is activated, if the end user fails to back up the TPM
key, or if the end user loses the TPM key, it may result in permanent,
unrecoverable data loss, for which Canon U.S.A., Inc. is not liable. (See
the DISCLAIMER , on page ii for further details.)
IMPORTANT
• If the TPM setting is activated and the TPM chip fails, the confidential
information stored on the chip can only be recovered if Canon’s service
representative replaces the TPM chip and restores the original TPM
key to the new chip. Immediately, back up the TPM key on a USB
memory stick, after the TPM setting is activated.
•
Only the Administrator of the machine can back up the TPM key.
•
For security reasons, the TPM key can only be backed up once. Store
the USB memory with the backup data in a safe place.
•
For the backup of the TPM key, it is recommended that a USB memory
stick (supported system file: FAT32) with free space of 10 MB or more
is used.
•
The TPM seals the hardware components associated with the data,
and the data cannot be accessed unless the specific TPM key is issued
by the TPM chip. Therefore, setting the TPM mode to ‘On’, may affect
service procedures and service costs (if not handled properly). It is
strongly recommended that the Administrator who has access to the
TPM key be present for all service calls to prevent the loss of data and
productivity of the machine.
3. HDD Data Erase
The HDD Data Erase feature is available as standard for the
imageRUNNER ADVANCE Series for environments requiring additional
data security measures. This feature will automatically overwrite and erase
image data immediately after the job is competed; therefore, no trace of
the data remains on the hard disk. It will perform an overwrite of up to three
(3) times with random data for maximum-security protection depending on
preferences set by the system administrator.