Ciphermail encrypts and signs email messages using S/MIME. To lower the threshold for receiving encrypted email messages, we introduced Ciphermail Encrypted PDF. Ciphermail can put the email message in a PDF file, encrypt this file with a password and send it to recipient as an email attachment.
You can use this app to calculate the PDF one-time password. You need to initialize the app using a secret string that is used to calculate the passwords for each individual PDF.
This app can only be used for decrypting Ciphermail encrypted PDF files. If you have not received a Ciphermail PDF message, you have no practical use for this app.
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