Dongle (computer encryption device) generally refers to computer encryption lock
The encryption lock is a kind of encryption product that is inserted in the parallel port of the computer (the new type encryption lock also has a USB port). Generally, there are dozens or hundreds of bytes of non-volatile storage space available for reading and writing, and now the newer dog (encryption lock) also contains a single-chip microcomputer.
Software developers can use the interface function to exchange data with the dongle (that is, read and write the dongle) to check whether the dongle is plugged into the interface; or directly use the tools attached to the dongle to encrypt their own EXE files (commonly known as "packaging"). "). In this way, software developers can set up multiple software locks in the software, and use the encryption lock as a key to open these locks; if the encryption lock is not inserted or the encryption lock does not correspond, the software will not execute normally.
The encryption lock is an intelligent tool with software protection function for software developers. It includes a hardware installed on the parallel port or USB port of the computer, and a set of interface software and tool software suitable for various languages. The encryption lock is based on hardware protection technology, and its purpose is to prevent the illegal use of intellectual property rights through the protection of software and data.
The dongle is usually called the dongle, which is another name (nickname) for the dongle