PDF Messenger: Introduction
A problem with S/MIME and PGP is that the sender and recipient require an S/MIME certificate or PGP key. Although installing a certificate and a private key is not hard, even less so when using the gateways built-in CA functionality, for most recipients getting a certificate and configuring the mail client is too difficult.
PDF encryption is a light weight alternative to S/MIME or PGP. With the PDF encryption module, the complete email, including all attachments, is converted into a password protected PDF. The password protected PDF is then sent to the recipient. The recipient can open the PDF using a standard PDF reader.
The password for the PDF should then be securely delivered to the recipient.
PDF messenger features
The PDF is encrypted with AES128.
Attachments are embedded within the encrypted PDF.
The recipient can reply by clicking the reply button.
Full Unicode support.
Example PDF OTP encrypted email from Gmail inbox:
Example Encrypted PDF after decryption: