GBDE-GEOM Based Disk Encryption on FreeBSD
BSD Forums writes "The ever increasing mobility of computers has made protection of data on digital storage media an important requirement in a number of applications and situations. GBDE is a strong cryptographic facility for denying unauthorised access to data stored on a 'cold' disk for decades and longer. GBDE operates on the disk(-partition) level allowing any type of file system or database to be protected. A significant focus has been put on the practical aspects in order to make it possible to deploy GBDE in the real world. FreeBSD's Poul-Henning Kamp says in an email to freebsd-current that he has uploaded this paper and slides which he presented at BSDcon 2003, California, USA."
One of the cooler features that come with GBDE is the fact that you can encrypt CD-ROM images. This makes for a very secure way of getting someone a lot of sensitive data. A patch was recently posted on the current@ mailing list to allow this.