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Configuration of E-mail Encryption/Digital Signature
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Configuration of E-mail Encryption/Digital Signature
This section describes how to encrypt e-mails and how to attach a digital signature to e-
mails.
Installation Overview ..................................................................................................................................................................611
Step1 Configuration on the Machine......................................................................................................................................611
Step2 Configuration on Sender and Recipient .....................................................................................................................613
Installation Overview
To encrypt e-mails and attach a digital signature, configure the machine and your computer
as follows:
Note • To encrypt e-mails and attach a digital signature to e-mails between the machine and a computer, a
personal or device certificate for S/MIME of a recipient and the device certificate of the machine
must be set on the computer. Configure the following settings to the certificates:
- "e-mail address"
- If the certificate contains V3 extension "keyUsage", "digitalSignature" and "keyEncipherment"
must be asserted.
- If the certificate contains V3 extension "extendedKeyUsage", "emailProtection" must be set.
• Up to 100 addresses can be encrypted with S/MIME.
„
Configuration on the Machine
Configure a certificate on the machine. No certificate is registered on the machine by
factory default.
Configure the following settings to set up a certificate on the machine.
z Configuring certificates by CentreWare Internet Services
- Set up HTTPS communications encryption settings, and then configure a certificate on
the machine.
„
Configuration on Sender and Recipient
To transmit e-mails encrypted by S/MIME and with digital signatures attached, register the
required certificate on equipment of a sender and a recipient.
Step1 Configuration on the Machine
This section describes configuration procedures to set up a certificate with CentreWare
Internet Services.
Note • You cannot use a self-signed certificate created with CentreWare Internet Services for S/MIME.
• The machine supports to import RSA public key (up to 4096 bit).
Setting up a Certificate using CentreWare Internet Services
To configure a certificate using CentreWare Internet Services, configure the encryption
settings for HTTP communications, and then import a certificate issued by another CA to
enable S/MIME.
For details on how to configure the encryption settings for HTTP communication, refer to "Configuration of HTTP
Communications Encryption" (P.606).
1
Start CentreWare Internet Services.
For more information on how to start CentreWare Internet Service, refer to "Starting CentreWare Internet Services" (P.557).
2
Import a certificate.