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cryptsetup is utility used to conveniently setup disk encryption based on dm-crypt kernel module. These include plain dm-crypt volumes, LUKS volumes, loop-AES and TrueCrypt compatible format.


  • Create an encrypted file system on a given partition:
fdisk -cu /dev/xvde1
partx -a /dev/xvde
cryptsetup luksFormat /dev/xvde1
cryptsetup luksOpen /dev/xvde1 vault
mkfs.ext4 /dev/mapper/vault
mkdir /vault
  • Edit /etc/fstab and add the following line:
/dev/mapper/vault  /vault  ext4  defaults  1 2
  • Test mount points:
mount -a
  • Create/edit /etc/crypttab and add the following line:
vault  /dev/xvde1
  • Allow for automated boot with your /vault drive automatically mounted and password entered (this is a very bad idea, as it defeats the entire purpose of LUKS encrypted partitions):
echo -n "vault  /dev/xvde1  /root/.vault" > /etc/crypttab
echo -n "your_password" > /root/.vault
chown root /root/.vault && chmod 600 /root/.vault
cryptsetup luksAddKey /dev/xvde1 /root/.vault
  • Close
cryptsetup luksClose vault

External links