Cisco Cisco Email Security Appliance C680 用户指南
19-3
Cisco AsyncOS 9.0 for Email User Guide
Chapter 19 S/MIME Security Services
Signing, Encrypting, or Signing and Encrypting Outgoing Messages using S/MIME
2.
Encrypt the message body using the session key.
3.
Encrypt the session key using the public key of the recipient's S/MIME certificate.
4.
Attach the encrypted session key to the message.
5.
Send the encrypted message to the recipient.
How to Sign, Encrypt, or Sign and Encrypt Outgoing Messages using S/MIME
Note
If you want to perform S/MIME signing, encryption, or signing and encryption using CLI, use the
smimeconfig
command. See the CLI inline help for more details.
Steps
Do This
More Info
Step 1
Depending on your requirements, do the
following:
following:
•
For S/MIME signing, set up a certificate
for signing messages.
for signing messages.
•
For S/MIME encryption, set up the public
key of the recipient’s certificate for
encrypting messages.
key of the recipient’s certificate for
encrypting messages.
•
For S/MIME signing and encryption, set
up a certificate for signing messages and
the public key of the recipient’s certificate
for encrypting messages.
up a certificate for signing messages and
the public key of the recipient’s certificate
for encrypting messages.
See:
•
•
Step 2
Create a profile for signing, encrypting, or
signing and encrypting messages.
signing and encrypting messages.
See
.
Step 3
Define the conditions that messages must meet
in order for the appliance to sign, encrypt, or
sign and encrypt them.
in order for the appliance to sign, encrypt, or
sign and encrypt them.
See
Step 4
Determine when to sign, encrypt, or sign and
encrypt messages in the email workflow.
encrypt messages in the email workflow.
See:
•
•
Step 5
Define groups of users for whom you want to
sign or encrypt messages.
sign or encrypt messages.
Create a mail policy.
See
Step 6
Associate the signing or encryption actions that
you defined with the user groups you defined.
you defined with the user groups you defined.
Associate the content filter with the mail policy.
See