loop-aes-utils binary package in Ubuntu Precise amd64

 This package provides the mount(8), umount(8), swapon(8),
 swapoff(8), and losetup(8) commands with support for loop-AES
 loopback encryption.
 .
 Purpose of this package is to provide users of loop-AES with
 extended mount support that is not available with the crypto
 patch in the 'mount' package.
 .
 On installation, this package diverts files from the mount
 package and installs versions with loop-AES support in their
 places. The diversions get removed on removal of the package.

Source package