由于上课需要编写的Playfair加密程序，能够实现Playfair加密功能，通过了VS2015编译。所用资源和加密速度不同。-Since the class need to write Playfair encryption program, enabling Playfair encryption through the VS2015 compiler. And the resources used to encrypt different speeds.

简单的pe加密壳Demo，控制台程序，vs2015 编译，可直接运行，适合小白学习(Simple PE encryption shell Demo, vs2015 compiled, can run directly, suitable for small white learning)