Operation Manual

Exchanging Messages and Using Outlook | 121
Individually sign and encrypt a message
Encrypting an Outlook e-mail message protects the privacy of
the message by converting it from plain, readable text into cipher
(scrambled) text. Only the recipient who has the authorization key can
decipher the message.
Digitally signing a message applies your certificate with the
authorization key to the message. This proves to the recipient that the
message is from you and not from an imposter or a hacker, and that
the message has not been altered.
To digitally sign and encrypt a new message
1. In the message list, tap Menu > Go To >
Outlook E-mail.
2. Tap New.
3. Tap Menu > Message Options.
4. Select the Encrypt message and Sign
message check boxes, and tap OK.
Verify the digital signature on a signed message you receive
1. Open the Outlook e-mail message that has been digitally signed.
2. At the top of the message, tap View Signature Status.
3. Tap Menu > Check Certificate.
To view the details of the certificate in the message, tap Menu > View
Certificate.
Note There can be several reasons why a digital signature is not valid.
For example, the sender’s certificate may have expired, it may have
been revoked by the certificate authority, or the server that verifies the
certificate is unavailable. Contact the sender to report the problem.