what have you tried so far??
i'm not sure, but i think that if you have HFS support in your kernel, or if you have the appropriate module loaded, then it might
simply be a matter of doing something kinda like:
mount -t hfs -o ro,encryption=aes-256 /home/mimithebrain/drive.img /mnt/aes-hfs-image/
i would imagine it would then prompt you for the password and stuff...
either way, like i said, i'm not really sure... my suggestion includes the "ro" (read-only) option cuz i don't want you to mess anything up!!