Você está procurando este sinalizador de encfs ?
--public
Attempt to make encfs behave as a typical multi-user filesystem. By default, all FUSE based filesystems are visible only to the user who mounted them. No other users (including root) can view the filesystem contents. The --public option does two things. It adds the FUSE flags "allow_other" and "default_permission" when mounting the filesystem, which tells FUSE to allow other users to access the filesystem, and to use the ownership permissions provided by the filesystem. Secondly, the --public flag changes how encfs's node creation functions work - as they will try and set ownership of new nodes based on the caller identification.
Warning: In order for this to work, encfs must be run as root -- otherwise it will not have the ability to change ownership of files. I recommend that you instead investigate if the fuse allow_other option can be used to do what you want before considering the use of --public.
Da próxima vez, RTFM:)