Konica Minolta bizhub 423 User Manual

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2.12 Protecting Data in the HDD2
2.12.2 Changing the Encryption Key
0For the procedure to call the Encryption Key entry screen on the display, see steps 1 through 4 of 
page 2-50.
0Do not leave the machine with the setting screen of Administrator Settings left shown on the display. If 
it is absolutely necessary to leave the machine, be sure first to log off from the Administrator Settings.
1Call the Encryption Key entry screen on the display from the control panel.
2Enter the currently registered 20-digit Encryption Key from the keyboard or keypad.
%Press the [C] key to clear all characters.
%Touch [Delete] to delete the last character entered.
%Touch [Shift] to show the upper case/symbol screen.
%Touch [Cancel] to go back to the HDD Settings screen.
3Select [Edit] and touch [OK].
%If a wrong Encryption Key is entered, a message that tells that the Encryption Key does not match 
appears. Enter the correct Encryption Key.
4Enter the new 20-digit Encryption Key from the keyboard or keypad.
To prevent entry of a wrong Encryption Key, enter the Encryption Key again in [Encryption Passphrase 
Confirmation].
%Press the [C] key to clear all characters.
%Touch [Delete] to delete the last character entered.
%Touch [Shift] to show the upper case/symbol screen.
%Touch [Cancel] to go back to the HDD Settings screen.
5Touch [OK].
%If the entered Encryption Key does not meet the requirements of the Password Rules, a message 
that tells that the entered Encryption Key cannot be used appears. Enter the correct Encryption Key. 
For details of the Password Rules, see page 1-8.
%If the entered Encryption Key does not match, a message that tells that the Encryption Key does not 
match appears. Enter the correct Encryption Key.
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2.12 Protecting Data in the HDD2
6Make sure that a message appears prompting you to turn OFF and then ON the main power switch. 
Now, turn OFF and then turn ON the main power switch.
%When the main power switch is turned off, then on again, wait at least 10 seconds to turn it on after 
turning it off. if there is no wait period between turning the main power switch off, then on again, the 
machine may not function properly. 
Here is the sequence, through which the main power switch and sub power switch are turned on 
and off:
Turn off the sub power switch → Turn off the main power switch → Turn on the main power switch 
→ Turn on the sub power switch
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2.13 Overwrite All Data Function2
2.13 Overwrite All Data Function
When access to the machine by the Administrator of the machine through the Administrator Settings from 
the control panel is authenticated, the machine enables setting of the operation of the Overwrite All Data 
function.
When the machine is to be discarded, or use of a leased machine is terminated at the end of the leasing con-
tract, the Overwrite All Data function overwrites and erases all data stored in all spaces of the HDD. The func-
tion also resets all passwords saved in the NVRAM to factory settings, preventing leak of data. For details of 
items that are cleared by the Overwrite All Data function, see page 1-10.
The HDD Overwrite Method offers the choice of eight different modes, [Mode 1] through [Mode 8]. Overwrite 
All Data takes about less than one hour in [Mode 1] at the minimum and about 9 hours in [Mode 8] at the 
maximum.
Setting the Overwrite All Data function
0For the procedure to call the HDD Settings screen on the display, see steps 1 and 2 of page 2-50.
0Do not leave the machine with the setting screen of Administrator Settings left shown on the display. If 
it is absolutely necessary to leave the machine, be sure first to log off from the Administrator Settings.
1Call the HDD Settings screen on the display from the control panel.
2Touch [Overwrite All Data].
ModeDescription
Mode 1 Overwrites once with 0x00.
Mode 2 Overwrites with random numbers → random numbers → 0x00.
Mode 3 Overwrites with 0x00 → 0xff → random numbers → verifies.
Mode 4 Overwrites with random numbers → 0x00 → 0xff.
Mode 5 Overwrites with 0x00 → 0xff → 0x00 → 0xff.
Mode 6 Overwrites with 0x00 → 0xff → 0x00 → 0xff → 0x00 → 0xff → random numbers.
Mode 7 Overwrites with 0x00 → 0xff → 0x00 → 0xff → 0x00 → 0xff → 0xaa.
Mode 8 Overwrites with 0x00 → 0xff → 0x00 → 0xff → 0x00 → 0xff → 0xaa → verifies.
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2.13 Overwrite All Data Function2
3Select the desired mode and touch [Delete].
4A confirmation message appears. Select [Yes] and touch [OK].
5Make sure that a message appears prompting you to turn OFF and then ON the main power switch. 
Now, turn OFF and then turn ON the main power switch.
%Check that all data has been overwritten and erased properly. Data is not erased properly if an error 
occurs during the procedure. For details, contact your Service Representative.
%When the main power switch is turned off, then on again, wait at least 10 seconds to turn it on after 
turning it off. if there is no wait period between turning the main power switch off, then on again, the 
machine may not function properly. 
Here is the sequence, through which the main power switch and sub power switch are turned on 
and off:
Turn off the sub power switch → Turn off the main power switch → Turn on the main power switch 
→ Turn on the sub power switch
%After the main power switch has been turned on, quickly turn it off and give the machine to the Ser-
vice Engineer. If the Overwrite All Data function is executed by mistake, contact the Service Engi-
neer. For details, contact your Service Representative.
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2.14 SSL Setting Function2
2.14 SSL Setting Function
When access to the machine by the Administrator of the machine through the Administrator Settings is au-
thenticated, the machine enables the setting of encryption of image data transmitted and received between 
the PC and the machine.
2.14.1 Device Certificate Setting
0For the procedure to access the Admin Mode, see page 2-2.
0Do not leave the machine with the Admin Mode setting screen left shown on the display. If it is abso-
lutely necessary to leave the machine, be sure first to log off from the Admin Mode.
0The key length set for the public key of the server generated in SSL certificate setting is 1024 bits.
1Start PageScope Web Connection and access the Admin Mode.
2Select [PKI Settings] from the pull-down menu of Security and click [Display].
3Click [New Registration].
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2.14 SSL Setting Function2
4Select [Create and install a self-signed Certificate] and click [OK].
5Make the necessary settings.
%If data entered for each item does not meet the requirements, a message appears that tells that the 
data entered is wrong.
6Click [OK].
The certificate can now be registered.
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2.14 SSL Setting Function2
2.14.2 SSL Setting
0For call the PKI Settings screen on the display, see steps 1 and 2 of page 2-60.
0Do not leave the machine with the Admin Mode setting screen left shown on the display. If it is abso-
lutely necessary to leave the machine, be sure first to log off from the Admin Mode.
NOTICE
When making the SSL Setting, be sure to make sure in advance that the device certificate has been registered 
in the machine. For the procedure to register the device certificate, see page 2-60.
1Start PageScope Web Connection and call the PKI Settings screen on the display.
2Click [SSL Setting] from [PKI Settings] menu.
3Set Mode using SSL/TLS and Encryption Strength and click [OK].
%Select Admin. Mode and User Mode for Mode using SSL/TLS.
%For encryption strength, select the strong AES-256, 3DES-168.
%In the Enhanced Security Mode, the setting cannot be changed to one containing strength lower 
than AES/3DES.
4Click [OK].
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2.14 SSL Setting Function2
2.14.3 Removing a Certificate
0For call the PKI Settings screen on the display, see steps 1 and 2 of page 2-60.
0Do not leave the machine with the Admin Mode setting screen left shown on the display. If it is abso-
lutely necessary to leave the machine, be sure first to log off from the Admin Mode.
0In the Enhanced Security Mode, no certificates can be removed.
1Start PageScope Web Connection and call the PKI Settings screen on the display.
2Click [Setting].
3Select [Remove a Certificate] and click [OK].
4Click [OK].
5Click [OK] and restart the machine.
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2.15 S/MIME Communication Setting Function2
2.15 S/MIME Communication Setting Function
When access to the machine by the Administrator of the machine through the Administrator Settings is au-
thenticated, the machine enables the setting of encryption of text of e-mail transmitted and received between 
the PC and the machine.
NOTICE
To send S/MIME communications, it becomes necessary to register the certificate at the destination. Set 
1024 bits or more for the key length of the RSA public key for the certificate of each destination.
2.15.1 Setting the S/MIME Communication

0For the procedure to call the Administrator Settings on the display, see page 2-2.
0Do not leave the machine with the setting screen of Administrator Settings left shown on the display. If 
it is absolutely necessary to leave the machine, be sure first to log off from the Administrator Settings.
1Call the Administrator Settings on the display from the control panel.
2Touch [Network Settings].
3Touch [E-Mail Settings].
4Touch [S/MIME Communication Settings].
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2.15 S/MIME Communication Setting Function2
5Select [ON] and [E-Mail Text Encryption Method].
%To Select [ON], the administrator’s e-mail address specified in the device registration needs to cor-
respond with the e-mail address specified at the time of certification creation.
6Select encryption method and touch [OK].
%For encryption method, select the strong 3DES, AES-128, AES-192, or AES-256. If the mail 
software being used does not support AES, encrypted mail messages may be received, but they 
cannot be decrypted. Use AES-compliant mail software or select the encryption method that is the 
strongest of all compliant with the currently used mail software.
%Each encryption method represents the following.
Name: encryption algorithm: encryption key length
3DES: 3 key triple DES: 168 bits
AES-128: AES: 128bit
AES-192: AES: 192bit
AES-256: AES: 256bit
%In the Enhanced Security Mode, the setting cannot be changed to RC2 or DES.
7Touch [OK].
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