You can
configure a client certificate to use the S/MIME signature feature
(WF-C879R).
Access Web Config and select the Network Security tab.
Under S/MIME, select Client Certificate. You see a window
like this:
Select one of the
following options:
CA-signed
Certificate: Select Import
if you have obtained a CA-signed certificate. Choose the file to
import and click OK.
Self-signed
Certificate: Select Update
if you have not obtained a CA (Certificate Authority)-signed
certificate and want the product to generate a self-signed
certificate.