Whitenoise Email Attachment Encryptor - Version 3.0 The Whitenoise encrypted e-mail attachment utility allows users to send securely encrypted e-mail attachments to recipients even if they do not have the Whitenoise e-mail encryption software. The sender, who is using the Whitenoise encryption utility, encrypts the file using a dual password key that is given to the recipient while they are on the telephone or by other means. $100,000 Whitenoise Security Challenge.