Setting/Confirming a Key Pair and Device Certificate
These settings can be specified when the Device Signature PDF/XPS function is available for use. For information on the optional products required to use the Device Signature PDF/XPS function, see "Optional Products Required for Each Function."
Setting a Key Pair and Device Certificate
The following procedures describe how to generate and update the key pair and device certificate necessary for adding a device signature to a PDF or XPS file.
1.
Press 
(Settings/Registration).
(Settings/Registration).2.
Press [Management Settings] → [Device Management] → [Certificate Settings].
3.
Press [Generate Key].
4.
Press [Generate/Update Device Signature Key].
5.
Press [Yes].
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IMPORTANT
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You can register only one key pair.
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NOTE
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The name of the generated/updated key pair is set to 'Device Signature Key'.
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6.
Press [OK].
Confirming a Key Pair and Device Certificate
The following procedure describes how to confirm a key pair and device certificate generated/updated by the administrator in "Setting a Key Pair and Device Certificate."
1.
Press (Settings/Registration).
(Settings/Registration).2.
Press [Management Settings] → [Device Management] → [Certificate Settings].
3.
Press [Key and Certificate List] → [Key and Certificate List for This Device].
If user signature is disabled, it is not necessary to press [Key and Certificate List for This Device]. If you press [Key and Certificate List], the screen changes to the Key and Certificate List screen.
If 
is displayed to the left of a key pair, it is corrupted or invalid. Follow the procedure in "Setting a Key Pair and Device Certificate" to generate/update a key pair.
is displayed to the left of a key pair, it is corrupted or invalid. Follow the procedure in "Setting a Key Pair and Device Certificate" to generate/update a key pair.|
NOTE
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You cannot delete or edit a key pair necessary for a device signature on the Key and Certificate List for this Machine screen.
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4.
Select "Device Signature Key" → press [Certificate Details] → [Certificate].
If [Certificate] is grayed out or <The key is corrupted or invalid.> is displayed, you cannot use the key pair. Follow the procedure in "Setting a Key Pair and Device Certificate" to generate/update a key pair.
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NOTE
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<Certificate Thumbprint> contains sender information used to validate the reliability of a PDF or XPS file with a device signature, by matching it with the SHA1 message digest number.
The expiration date for the device signature is set to 5 years after its key pair was generated/updated.
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5.
Press [OK] → [OK] → [OK].
6.
Press [OK].
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IMPORTANT
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For information on how a general user can check the device certificate, see "Checking a Device Signature/User Signature Certificate."
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