Tpm (Trusted Platform Module); Hdd Data Erase - Canon imageRUNNER ADVANCE DX C5700 Series : imageRUNNER ADVANCE DX C5760i Service Manual

Canon

2. TPM (Trusted Platform Module)

TPM is a standard security chip (tamper resistant hardware) installed in the
imageRUNNER ADVANCE DX C5700 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
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 DX 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.
imageRUNNER ADVANCE DX C5700 Series Service Guide
Revision 5
imageRUNNER ADVANCE DX C5700 Series Service Guide
ii for further details.)
March 2021
Page 24