Encrypted Virtual File System
EVFS is a Linux virtual filesystem which sits on top of VFS to access the underlying filesystem. This means users can mount any directory containing encrypted data to any other directory (=clone), but the second will be encrypted/decrypted transparently until it is unmounted. It has multi-user support so that regular users can mount their own evfs filesystems from and to directories they own. Therefore it's possible to have a totally encrypted filesystem, each user with their own key.