Information Technology Reference
In-Depth Information
4. Watch your Inbox for a message saying that your certificate is ready to be picked
up—normally this takes minutes (or less). (If the message doesn't arrive within a
half hour or so, make sure it's not in your Junk mailbox.) In this message, click
the Click & Install Comodo Email Certificate button.
Your default browser should open and download the certificate. Depending on
your settings, it may import the certificate automatically; if not, double-click the
certificate file in your Downloads folder. Keychain Access opens; if you're asked
which keychain to put the certificate in, choose Login.
5. You must now tell your Mac to consider your certificate “trusted” (which isn't
automatic, since you did not go through a lengthy and expensive verification
process to get it). To do this, open Keychain Access if it isn't already open,
select Login in the Keychains list, select My Certificates in the Category list, and
double-click the newly added certificate with your email address to open it in a
new window. Click the triangle next to Trust and then choose Always Trust from
the When Using This Certificate pop-up menu.
Close the window, enter your password when prompted, and click Update Set-
tings.
6. Quit Keychain Access and close your browser window.
7. Quit and reopen Mail.
You're now ready to sign messages.
Sign or Encrypt a Message
The buttons you use to sign and encrypt messages are located in the header area of New Mes-
sage windows (
Figure 18
). The starburst-shaped one on the right
is used for signing
messages, and the padlock-shaped one on the left
is used for encrypting them.
Figure 18:
Use these buttons to encrypt and sign messages.
If you don't see the buttons in the window, first make sure the From pop-up menu is set to
an address for which you have a certificate. Click the icon in the lower-left corner of the
header area and choose Customize from the pop-up menu. Then check the box next to those
buttons and click OK.
