Zhejiang University's central control operator softdog is an encryption method of computer software, commonly known as "hardware encryption lock". It is a hardware plugged into the parallel port (printout port) or USB port of the computer.
Generally, there are tens or hundreds of bytes of non-volatile storage space for reading and writing. Software developers can check whether the dongle is plugged into the interface by exchanging data with the dongle through the interface function (that is, reading and writing the dongle); Or directly encrypt your EXE file (commonly known as "shell") with the tool attached to the dongle.
In this way, software developers can set multiple software locks in the software and use the software dog as the key to open these locks; If no dongle is inserted or the dongle does not correspond, the software will not execute normally.
The installation of the dongle is very simple. First, turn off the computer and unplug all the power cords on the computer. Plug the dongle into the print socket at the back of the computer (the socket with appropriate size) and tighten the fixing screw. If your print socket is connected to the printer, please unplug the printer cable, install the dongle, connect the printer cable to the interface behind the dongle, and tighten the fixing screws.
Note: In the process of plugging the dongle or printer connection, ensure that the computer has been turned off and all power cables on the computer have been unplugged. Otherwise, the computer motherboard may be damaged. To check whether the dongle is installed properly, open "My Computer" and find the folder of "RBQYB". Double-click the dog.Exe file. The dongle detection program will open. Click the "Check" button to see the result of detecting the dongle.
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