Linux - Open Source White Papers
Encrypted Watermarks and Linux Laptop Security
Overview The most common way to implement full-disk encryption (as opposed to encrypted file systems) in the GNU/Linux operating system is using the encrypted loop device, known as CryptoLoop. The authors demonstrate clear weaknesses in the current CBC-based implementation of CryptoLoop, perhaps the most surprising being a very simple attack which allows specially watermarked files to be identified on an encrypted hard disk without knowledge of the secret encryption key. The authors propose simple improvements to the current CryptoLoop implementation based on the notions of tweakable encryption algorithms and enciphering modes. It also discuss sector-level authentication codes. The new methods have been implemented as a set of patches to the Linux Kernel series 2.6 and the relevant system tools.
| Publisher | Helsinki University of Technology | File Format | |
|---|---|---|---|
| Date Published | August 2004 | ||
| Format | White Papers | ||
| Topics | |||
-
Did you find this white paper useful?
White Paper RSS
Download
Register
