A way to send secure data/messages using Corona - not sure where to start?

As I’m getting closer and closer to finishing up my EMS app for the hospital, a heart surgeon approached me about another app.

This app would require the ability to send secure messages/data back and forth.  All messages would need to be logged somewhere, so I’m thinking some sort of server interface but being that I’m still new to Corona, I have no idea where to even start looking.

Are there any 3rd party servers/add-ons/etc that I can leverage?

Check out parse.com or coronimum.io

Check out parse.com or coronimum.io