Maryland Code, Public Safety § 13A-1050

(1) the oath is administered with respect to a matter for which such oath is required or authorized by law;

(2) the oath is administered by a person having authority to do so;

(3) on the oath, the other person willfully makes or subscribes a statement;

(4) the statement is material;

(5) the statement is false;  and

(6) when the statement is made or subscribed, the person subject to this title and the other person do not believe that the statement is true.