Invoking grub-mkpasswd-pbkdf2

The program grub-mkpasswd-pbkdf2 generates password hashes for GRUB (see Security).

grub-mkpasswd-pbkdf2 accepts the following options:

-c number--iteration-count=number

Number of iterations of the underlying pseudo-random function. Defaults to 10000.

-l number--buflen=number

Length of the generated hash. Defaults to 64.

-s number--salt=number

Length of the salt. Defaults to 64.