LinuxBSDos.com posted a tutorial about installing Linux Mint Debian Edition on an encrypted LVM file system

Linux Mint Debian Edition (LMDE) is the edition of Linux Mint that is based on Debian Testing. Like the edition of Linux Mint based on Ubuntu, the installer of LMDE lacks support for LVM, and disk encryption. This tutorial presents a detailed guide on how to install LMDE on an encrypted LVM file system.

  How to install Linux Mint Debian Edition on an encrypted LVM file system