sudo apt-get install cryptsetup

• https://www.lisenet.com/2013/luks-add-keys-backup-and-restore-volume-header/

sudo cryptsetup -vy luksFormat '/dev/sda2'

# > /dev/mapper/crypt_my_part
sudo cryptsetup luksOpen --allow-discards '/dev/sda2' crypt_my_part

Hozzuk létre a /etc/crypttab fájlt :

crypttab

# <target name>   <source device>                           <key file> <options>
crypt_my_part     UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx none       luks

sudo cryptsetup luksDump '/dev/sda2'

sudo cryptsetup luksHeaderBackup '/dev/sda2' --header-backup-file 'sda2-header-backup.luks'

sudo cryptsetup luksHeaderRestore '/dev/sda2' --header-backup-file 'sda2-header-backup.luks'

• https://www.cyberciti.biz/security/how-to-change-luks-disk-encryption-passphrase-in-linux/

A 0-ás kulcs jelszavának módosítása:

sudo cryptsetup luksHeaderRestore '/dev/sda2' -S 0