Special line cipher machine for network security

The utility model belongs to the technical field of cipher machines, and particularly relates to a special line cipher machine for network security, which comprises a cipher machine body, a support is fixedly connected onto the cipher machine body, a connecting sleeve is slidably sleeved on the outer side of the support, a slider is fixedly connected onto the connecting sleeve, a connecting plate is fixedly connected onto the connecting sleeve, and the connecting plate is fixedly connected onto the support. A threaded rod is connected to the interior of the connecting plate through threads, a plug is inserted into the cipher machine body, a fixing block is fixedly connected to the cipher machine body, and a limiting frame is slidably connected to the outer side of the fixing block in a sleeving mode. Through the arrangement of the connecting sleeve, the position of the connecting sleeve on the bracket can be adjusted by rotating the threaded rod, so that the problem of length defect of the bracket is solved,