[mdlug] secure file transfer IOS/Android/WinPhone to/from server

[Mark Thuemmel]

I'm looking for a way to have employees retrieve editable pdf files from 
our server to their mobile device, make edits, and send them back.  They 
might not always be connected to the Internet when editing the pdf.

Needs to work on Android 2.3 and higher, Iphone/pad, and be nice if it 
workd on WinPhone7/8 too.

My employer would probably prefer a windows server, but I might get away 
with using a Linux one.  We have a static ip available at the office.  I 
do have a sftp server at the office.

Something like DropBox seems great, but I have sensitive data that i 
must protect and I don't think DropBox is secure.  In fact I don't trust 
any cloud provider and want my files encrypted end to end so if the 
cloud is court ordered to give my data to someone, they can't.

My employer seems to think editable PDF is what they want for the mobile 
employes to fill out information, but I might be open to other ideas for 
filling out forms and sending the data back to the home office.

I'd be willing to look at commercial solutions as well as roll your own.

Any ideas?