grub2: password_pbkdf2

 
 16.3.55 password_pbkdf2
 -----------------------
 
  -- Command: password_pbkdf2 user hashed-password
      Define a user named USER with password hash HASHED-PASSWORD.  Use
      'grub-mkpasswd-pbkdf2' (SeeInvoking grub-mkpasswd-pbkdf2) to
      generate password hashes.  SeeSecurity.