Requesting feedback for encrypted folder gvfs backend

[Stef Walter <stefw gnome org>]

Hey guys,

For Google Summer of Code, there's an idea to have an encrypted folder
gvfs backend implemented via encfs. Rather than mounting a whole
encrypted disk (like a loopback file), this just encrypts the files
inside a folder.

encfs already provides nice mountabality of an encrypted folder. So the
question has come up how to integrate it.

Were thinking of using gio/gvfs backend as a way to mount such a disk,
and do the prompting and so on.

To simplify things this could be a hybrid backend where the mounting
takes place via gio/gvfs but then encfs is used to actually do the mount
of the folder, after which point it just proxies access via the encfs mount.

Alternatively, but far more complex, the backend would do all the work
that encfs does and actually implement the reading/writing of encrypted
files.

I'd like to solicit feedback for this here:

http://www.google-melange.com/gsoc/proposal/review/google/gsoc2013/sambull/16003

We've found documentation for how to implement a gio file backend hard
to come by. But may have missed something.

Thanks in advance,

Stef