LDK overview
Blue encryption lock, the big one is the master lock, and the small one is the key. The blue encryption lock big lock installs the Sentinel LDK Vendor Suite tool to generate a file, generates code in this tool, configures the corresponding library file according to the service provider, and replaces according to the documentation Specify the content of the file, start the demo example, and finally put the generated code example into the project as needed.
The computer does not have permission to enter the system without inserting the LDK lock.