Configuration of E-mail Encryption/Digital Signature
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Encryption and Digital Signature Settings
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Message Digest Algorithm
Select a message digest algorithm from [SHA1] or [MD5].
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Message Encryption Method
Select an encryption method for the e-mail message body from [3DES], [RC2-40],
[RC2-64], or [RC2-128] when you send an e-mail from the machine.
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Certificate Auto Store
Select whether to automatically store the certificate when receiving an e-mail with an
S/MIME certificate attached from an address registered in the Address Book.
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Receive Untrusted E-mail
Set whether or not to receive untrusted e-mails such as an e-mail with expired
certificate attached or no certificate attached.
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Digital Signature - Outgoing E-mail
Set whether to always attach a digital signature to an outgoing e-mail or to select a
digital signature when sending e-mail from the machine.
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Receive Untrusted Internet Fax
Set whether or not to receive untrusted Internet faxes such as an e-mail with expired
certificate attached or with no certificate attached.
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Digital Signature - Outgoing Internet Fax
Set whether to always attach a digital signature to an outgoing Internet fax or to
select a digital signature when sending Internet fax from the machine.
4) Click [Apply].
Step2 Configuration on Sender and Recipient
To transmit e-mails encrypted or with digital signature attached, a device certificate and
a personal certificate must be registered with each machine.
This section describes certificates required for destination and source, and registration
procedures.
Note • Required certificates include a trusted root certificate authority and all intermediate
certificate authorities that are registered in the path of a certificate to use.
When source is the machine and destination is a computer
The personal certificate of a computer must be registered on the machine. And the
device certificate of the machine must be registered on a computer.
To register the computer's personal certificate, use CentreWare Internet Services.
There are two methods to register the machine's device certificate to a computer:
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Send an e-mail with S/MIME digital signature to a computer from the machine and
register it to the certificate store of an e-mail application in the computer.
To send an e-mail with S/MIME digital signature, select [Always add signature] or
[Select during send] for [Digital Signature - Outgoing E-mail] under [Tools] > [System
Settings] > [Connectivity & Network Setup] > [Security Settings] > [S/MIME Settings]
in advance.
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Export the certificate of the machine to a computer using CentreWare Internet
Services, and register it to the certificate store of an e-mail application in the
computer.
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