Encrypting a message protects the privacy of the message by converting it from plain, readable text into cipher (scrambled) text. Only the recipient who has the private key (private key: The secret key kept on the sender's computer that the sender uses to digitally sign messages to recipients and to decrypt (unlock) messages from recipients. Private keys should be password protected.) that matches the public key you used to encrypt the message can decipher the message. This is a separate process from digitally signing a message.
Encrypt on a per message basis
- In the message, click Options .
- Click Security Settings.
- Select the Encrypt message contents and attachments check box.
- To change additional settings, such as choosing a specific certificate to use, click Change Settings.
- Click OK three times.
If you use Microsoft Word as your e-mail editor, there is a quick way to encrypt a message. With the new message open, on the E-mail
toolbar, click the
Encrypt all messages
- In the main Outlook window, on the Tools menu, click Options, and then click the Security tab.
- Select the Encrypt contents and attachments for outgoing messages check box.
- To change additional settings, such as choosing a specific certificate to use, click Settings.