A Structured Approach to Hard Disk Encryption

It is believed that best protection from unauthorized disk access can be done by encrypting the entire disk: the swap partition, and the primary system partition, as well as any user data partitions.However, setting up a system to use primary-system-partition encryption can be a challenging and complex process, involving a rather high level of familiarity with the boot-time Linux initialization process.

This document explains how to encrypt the data kept on hard disk so that it cannot be accessed without the appropriate key.