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To attach an electronic signature to send e-mail, a device certificate must be installed in advance.
As the device certificate, you can use a self-signed certificate created by the machine or a certificate issued by a certificate authority. For details about creating and installing the device certificate, see Protecting Communication Paths via a Device Certificate.
To install an S/MIME device certificate, you must first register "Administrator's Email Address" in [System Settings] as the e-mail address for the device certificate. Note that even if you do not use S/MIME, you must specify an e-mail address for the S/MIME device certificate.
Electronic signature
Install a device certificate on the machine. The secret key on the certificate is configured on the machine.
Attach the electronic signature to an e-mail using the secret key provided by the device certificate.
Send the e-mail with the electronic signature attached to the user.
The receiver requests the public key and device certificate from the machine.
Using the public key, you can determine the authenticity of the attached electronic signature to see if the message has been altered.
Configuration flow (self-signed certificate)
Create and install the device certificate using Web Image Monitor.
Configure settings for the certificate to be used for S/MIME using Web Image Monitor.
Configure settings for the electronic signature using Web Image Monitor.
Configuration flow (certificate issued by a certificate authority)
Create the device certificate using Web Image Monitor.
The application procedure for a created certificate depends on the certificate authority. Follow the procedure specified by the certificate authority.
Install the device certificate using Web Image Monitor.
Configure settings for the certificate to be used for S/MIME using Web Image Monitor.
Configure settings for the electronic signature using Web Image Monitor.
