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A fill device or key loader is a module used to load cryptographic keys into electronic encryption machines. Fill devices are usually hand held and electronic ones are battery operated. Older mechanical encryption systems, such as rotor machines, were keyed by setting the positions of wheels and plugs from a printed keying list. Electronic systems required some way to load the necessary cryptovariable data. In the 1950s and 1960s, systems such as the U.S. National Security Agency KW-26 and the Soviet Union's Fialka used punched cards for this purpose. Later NSA encryption systems incorporated a serial port fill connector and developed several common fill devices (CFDs) that could be used with multiple systems. A CFD was plugged in when new keys were to be loaded. Newer NSA systems allow "over the air rekeying" (OTAR), but a master key often must still be loaded using a fill device.
A manual detection assembly line for data line production
This utility model belongs to the field of data cable production technology, specifically a manual inspection production line for data cable production, including a machine body and a filling device. A conveyor belt is fitted over the surface of the machine body, and a support frame is fixedly connected to the upper surface of the machine body. The filling device is located on the side wall of the machine body and includes two support blocks. The side walls of the two support blocks are fixedly connected to the side wall of the machine body. A placement frame is fitted over the surface of the two support blocks, and guide rollers are rotatably connected to the surface of the placement frame. A reinforcing block is fixedly connected to the surface of the placement frame. Two blocking devices are provided on the upper surface of the placement frame. Each blocking device includes a locking block, the bottom end of which is fixedly connected to the upper surface of the placement frame. A support strip is fitted over the surface of the locking block, and multiple limiting rollers are rotatably connected to the bottom end of the support strip. By setting up the entire device, data cables can be easily moved from one machine body to another, thereby reducing the number of locations where data cables get stuck between two machine bodies.
Owner:SUZHOU YUEXUAN ELECTRONIC TECHNOLOGY CO LTD