key_length=512 iterations="$(head -n 2 /boot/crypted-storage/default)" salt="$(head -n 1 /boot/crypted-storage/default)" chal="$(echo -n $salt | openssl dgst -binary -sha512 | rbtohex)" resp="$(ykchalresp -2 -x $chal 2>/dev/null)" user_key="$(read -s)" luks_key="$(echo -n $user_key | pbkdf2-sha512 $(($key_length / 8)) $iterations $resp | rbtohex)" echo -n $luks_key | hextorb | sudo cryptsetup luksOpen /dev/sda2 crypted --key-file=-