The encryption is not a problem, you can simply create a smf_funtion.php file which includes the includes from the function.php within vShare, this has been done before by me in order to get the audio section working.

Alot of the time you don't need access to anything, if you know how to connect to the MySQL database call a couple of functions and then re-write back to the database, and use a session script, that's about all you need.

I'm about 30% completed with the bridge, and should hopefully have a working version available within the next week or 2.