storing hard candy for next year

Hi all,
Does anybody know if and how to store hard candy for decorating gingerbread houses? I save it from one year to the next, adding to my supply every year, but I now live in a more humid area and last year's stash became sticky in storage. Can it be frozen without getting sticky?
Appreciate any suggestions. I really can't afford to buy the same candy year to year and use only a fraction of it. Thanks.