Circuit structure of key distribution system

The utility model discloses a circuit structure of a secret key distribution system. The circuit structure comprises a display control unit, an algorithm processing unit, a data processing unit, a carrier plate unit, a clock unit, a reset unit and a power supply unit. Wherein the display control unit is connected with the algorithm processing unit through an Ethernet interface, the data processingunit is connected with the data processing unit through an Ethernet interface, and the carrier plate unit, the clock unit, the reset unit and the power supply unit are all connected with the displaycontrol unit, the algorithm processing unit and the data processing unit. According to the circuit structure, a CPU + FPGA + PPC framework design is adopted, data display, algorithm processing and data processing processes involved in the key distribution process are mutually independent and are in mutual communication connection through an Ethernet interface, and the reliability and safety of thekey distribution process a