What is a Dongdong?
What a dog is! What is it used for
The computer dog, namely the encryption dog, now said the encryption dog, generally is the hardware encryption dog. Is a kind of similar to the U disk, is a way of anti-theft version. Generally, a small part of the program or decryption part is integrated into the hardware of the dongle to prevent software piracy.
Now it seems that in addition to copying the dongle, there is no good cracking method.
Dongle is often considered as hardware protection. It is a small plug-in that can be attached to the parallel port, serial port or USB of the computer. It contains EPROM and customized ASIC. The principle of dongle protection is that software developers often check the cell in dongle and compare the return value in the program. This kind of check can be to read the cell directly or use some internal algorithm (at this time, the cell is protected and cannot be read directly)