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Revision: 15237
at June 28, 2009 10:52 by Dorgendubal


Updated Code
apt-get install cryptsetup
sudo modprobe dm-crypt
umount /home

cryptsetup --size 256 --cipher 'aes-cbc-essiv:sha256' luksFormat /dev/sda5
cryptsetup luksOpen /dev/sda5 luks-home
mkfs.ext3 /dev/mapper/luks-home

vi /etc/crypttab
luks-home       /dev/sda5       none    luks

vi /etc/fstab
/dev/mapper/luks-home /home     ext3 defaults,noatime        0       2

reboot

Revision: 15236
at June 28, 2009 10:51 by Dorgendubal


Initial Code
apt-get install cryptsetup
sudo modprobe dm-crypt
umount /home
cryptsetup --size 256 --cipher 'aes-cbc-essiv:sha256' luksFormat /dev/sda5
cryptsetup luksOpen /dev/sda5 luks-home
mkfs.ext3 /dev/mapper/luks-home

vi /etc/crypttab
luks-home       /dev/sda5       none    luks

vi /etc/fstab
/dev/mapper/luks-home /home     ext3 defaults,noatime        0       2

reboot

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Initial Description
Ideal if you have a laptop. If someone steals it, he will not be able to read all your mails and documents with precious information (about passwords, accounts, credit cards, private stuffs, etc...).

This snippet is considering that you are using Ubuntu as OS and you already have a dedicated partition for home (/dev/sda5 in my example).

* Steps 1-3 are pre-requirements.
* Steps 5-7 encrypts the partition and formats it as ext3 (make sure that you have a backup of your home somewhere!!!)
* Steps 10 and 13 are not commands but lines to be added (or modified) in the editing files (Step 9 and 12). You have to be familiar with /etc/fstab to understand it.
* Other steps are for configuring your system such your home partition gets automatically mounted on startup (you will be prompted for password during boot). 

Enjoy security!

Initial Title
Encrypt your /home partition

Initial Tags
linux, security, ubuntu

Initial Language
Bash