I need a program to place on a website that will ask for a user name and password then will create a file on that site for that user. I want the person with the password to have access to that file. At the same time I want that computer connected to that file as a backup to thier computer drive automatically, with an upload that will run only when the computer is idle or when asked to manually run. It will need to recognise changed files to refresh the backup. As simple as possible is the theme.
I need it to encrypt and decrypt those files as needed and I need it to automatically access that file with no setup info from the user.