NAME

       yubikey-luks-enroll - enroll your yubikey for usage with LUKS

SYNOPSIS

       yubikey-luks-enroll [ -s 3 ] [ -d /dev/sda6 ] [ -c ]

DESCRIPTION

       With  this  tool you can take a YubiKey with challenge-response enabled on slot 2 to add a
       LUKS / cryptsetup key slot.

       Your chosen PIN or password, plus your YubiKey can generate a response that is added as  a
       key to the cryptsetup disk.

       On  the  next  boot  you  can insert your YubiKey into a USB slot, enter your password, to
       unlock the disk. Alternatively you can enter any other passphrase that is valid  for  that
       disk.

OPTIONS

       The following options change the behavior of the tool.

       -h     Show summary of options.

       -s     The LUKS slot to save the passphrase to. (default: 7)

       -c     Clear the chosen LUKS slot at first.

       -d     The disk device to work with (default: /dev/sda3)

PREREQUISITES

       Before  adding  the Yubikey to the LUKS slot, you need to initialize your Yubikey. You can
       do so using the privacyIDEA management system or simply by using  the  command  line.  The
       following command will create a key for challenges response in Yubikey slot 2:

           ykpersonalize -2 -ochal-resp -ochal-hmac -ohmac-lt64 -oserial-api-visible

       After this, you can use yubikey-luks-enroll to assign this Yubikey to an LUKS slot.

SEE ALSO

       cryptsetup(1), ykpersonalize(1), ykchalresp(1).

                                            2015-12-01                     YUBIKEY-LUKS-ENROLL(1)