cheat sheets.

Encrypt your usb-stick (REMOVES ALL DATA ON STICK!):

all as root:

# 0. unmount device if mounted
umount /media/MOUNTPOINT   # or whereever your usb stick mountpoint is

# 1. save remove data on stick
dd if=/dev/urandom of=/dev/DEVICENAME

# 2. load kernel device mapper module
modprobe dm-mod

# 3. format device encrypted
cryptsetup luksFormat /dev/DEVICENAME

# 4. open device mapper
cryptsetup luksOpen /dev/DEVICENAME crypt

# 5. make file system on mapper
mkfs.ext3 /dev/mapper/crypt

# 6. close device mapper
cryptsetup luksClose crypt