A quantum cryptography apparatus securely generates a key to be used for secure transmission between a sender and a receiver connected by an atmospheric transmission link. The first module is configured to control transfer of blocks of data between a host device and the storage drive. The necessary data slots are relinquished to the new stream from existing streams when the number of the allocable data slots is less than a number of preset data slots of the new stream. This final shaped spiral is then cut into individual links which are then formed into the jewelry product. Further, the mooring system may comprise a rigid yoke or a soft yoke movably coupling the turntable to the first vessel for angular adjustment between the station keeping apparatus and a longitudinal center line of the first vessel.