Deleting a registered key pair
Click [Delete] on the right of the key pair you want to delete
A key pair cannot be deleted if it is currently used for some purpose, such as when "SSL" or "IEEE 802.1X",
is displayed under [Key Usage]. In this case, disable the function or replace the key pair before deleting it.
Select [Key and Certificate Signing Request (CSR)] and click [OK].
Specify settings for the key and certificate.