Delphi FMX OnGuard Undeclared identifier: 'TLbKey'

Question

I am trying to implement OnGuard in my FireMonkey application, but the procedure below requires TLbKey. I tried installing both LockBox2 and LockBox3, I included LbCipher, but I always get an error:

Undeclared identifier: 'TLbKey'

procedure TFolderForm.OgRegistrationCode1GetKey(Sender: TObject;
  var Key: TLbKey);
const CKey: TLbKey = ($E5, $8F, $84, $D6, $92, $C9, $A4, $D8, $1A, $FA, $6F, $8D, $AB, $FC, $DF, $B4);
begin
  Key := CKey;
end;