Binary package “libcryptsetup4-udeb” in ubuntu precise

disk encryption support - shared library (udeb)

 Cryptsetup provides an interface for configuring encryption on block
 devices (such as /home or swap partitions), using the Linux kernel
 device mapper target dm-crypt. It features integrated Linux Unified Key
 Setup (LUKS) support.
 .
 This udeb package provides libcryptsetup for the Debian Installer.