Abstract: An encryption key generation system generates encryption keys at both an originating terminal and a terminating terminal of a wireless network. A central controller generates a shared secret based on the identification information of a requesting terminal and a first number, which may be random. The central controller broadcasts the first number to all terminals. A second number is generated by the central controller incorporating the shared secret data and the terminating terminal's identification information. The requesting terminal generates the shared secret data using the first number and predetermined algorithms and generates an encryption key based on the first number and the shared secret data. The terminating terminal decodes the shared secret data from the second number, and generates the same encryption key using the first number and the shared secret data.

Abstract: A fuel burner for burning liquid and gas fuels having a short combustion volume stabilized by internal circulation of the hot combustion gases and air. A turbo blower supplies a portion of the combustion air to the combustion volume via a swirl plate which produces a rotational motion of the air and fuel. The rotational motion results in a region of less-than-atmospheric pressure in the center portion of the combustion volume which causes recirculation of gases back toward the burner and a stabilization zone near the burner nozzle. Aspiration of external air into the combustion volume is controlled by a short stabilization cone and the resulting combustion volume is small, eliminating the necessity for refractory lined ignition ports and combustion chambers.