[rdiff-backup-users] Encrypted backups

[Stavros Korokithakis]

Hello,
I would like a solution that will take incremental, remote backups.
Basically, what I want is exactly rdiff-backup + EncFS, but, for various
reasons, EncFS cannot be hacked to support rdiff-backup.

Therefore, I would like to add encryption support to rdiff-backup
myself. This would encrypt each file/directory separately (including
filenames). An ideal place to put this would be a hook at the place
where rdiff-backup reads/writes local files (as remote files still need
to be rsynced encrypted).

Can anyone point me to which file reading/writing files locally happens?
By "locally", I mean "the directory to backup, not the directory where
backups are stored". I had a look but nothing stuck out, hopefully these
functions won't be spread out all over the place.

Thanks,
Stavros