Network > Protocol Settings > Key Pair and Server Certificate Settings for Encrypted SSL Communication > Editing Key Pairs and Server Certificates
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Editing Key Pairs and Server Certificates

You can confirm the settings of registered key pairs and server certificates. You can also delete an unnecessary key pair and certificate, and check how a key pair is currently being used.


  1. On the TCP/IP Settings screen, press [Certificate Settings] → [Key and Certificate List] → [Key and Certificate List for this Machine] → specify the following.

If (invalid) is displayed to the left of a key pair, it is corrupted or invalid. After erasing the corrupted or invalid key pair, register a key pair (see "Generating a Key Pair and Server Certificate," or "Registering a Key Pair File and Server Certificate File Installed from a Computer.").

  • The Device Signature Key is a key pair required for a device signature. For more information, see "Confirming a Key Pair and Device Certificate."
  • If you want to confirm a server certificate:
  • If you want to erase a registered key pair:
  • If you want to check what a key pair is being used for:

  • If you want to confirm a server certificate:
  • Select the key pair for the server certificate you want to confirm → press [Certificate Details] → [Certificate Verification].

If [Certificate Verification] is grayed out or <The key is corrupted or invalid.> is displayed, you cannot use the key pair. After erasing the corrupted or invalid key pair, register a key pair (see "Generating a Key Pair and Server Certificate," or "Registering a Key Pair File and Server Certificate File Installed from a Computer.").


  • If you want to erase a registered key pair:
  • Select the key pair to erase → press [Erase].

  • Key pairs for which 'Using' is displayed in <Used> cannot be deleted because they are being used with IPSec or because SSL is set to 'On'. Press [Display Use Location] to check the type of security the key pair is being used for. To delete a key pair which is only being used with SSL, set the following settings to 'Off'. A key pair being used for IPSec cannot be deleted.
  • [Remote UI] (See "Remote UI.")
  • [Use HTTP] in [MEAP Settings] (See "MEAP/SSO.")
  • [IPP Print Settings] (See step 7 of "Settings Common to TCP/IPv4 and TCP/IPv6.")
  • <SMTP Receipt> in [E-Mail/I-Fax] (See step 2 of "E-Mail/I-Fax Settings.")
  • [Receive Restriction for Each Function] in [Device Information Delivery Settings] (See "Security.")
  • [Dept. ID Management Password Confirmation] (See step 12 of "Settings Common to TCP/IPv4 and TCP/IPv6.")

  • If you want to check what a key pair is being used for:
  • Select a key pair with 'Using' displayed for <Used> → press [Display Use Location] to check the kind of security the key pair is being used for.


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