Notwithstanding section 19 of this chapter, the authority has the power to contract with the holders of any of its bonds as to the custody, collection, securing, investment, and payment of any money of the authority and of any money held in trust or otherwise for the payment of bonds, and to carry out the contract. Money held in trust or otherwise for the payment of bonds or in any way to secure bonds and deposits of money may be secured in the same manner as money of the authority, and all banks and trust companies are authorized to give security for the deposits.
IC 5-1.2-4-20