Hi all, here is a little proposal, some of you may like. Let's assume Alice travels a lot and she wants to send Bob encrypted MMS messages, instead of regular email. First she writes her message, on an offline usage Notebook, and then pads it to a large size, so that she always has the same message size. https://github.com/sac001/pad Once done, she encrypts the message(s) with her favorite encryption tool and then she runs it through this program: https://github.com/jweyrich/imgify Additionally she can use a steganographic tool to hide the noise image into another image. https://github.com/umahmood/steg Finally she plugs in her dumb phone, with a USB port, to her offline usage only Notebook and copies the image to the phone and inserts the image into her MMS message. P.S. The advantage of this procedure should be that Alice's dumb phone is more protected against Government Trojans for smartphones, with a crypto messenger. Hope you like! Regards Stefan