To encrypt a file, right click it and select [Encrypt] from the action list.

On the “Encrypt” window, enter the PassPhrase twice. If you do not want to keep the unencrypted version of the file, check the “Delete Original” checkbox; otherwise, leave it unchecked.
Click [Encrypt] to encrypt the file.

You can also select multiple files to encrypt with the same passphrase.
Note that if you choose to use the Encrypt function, you are responsible for remembering the PassPhrase that you entered. If you forget the PassPhrase, you will not get the original file back.

Once your file is encrypted, it will be appended with a “.enc” extension, as shown in the figure below.