python 2.7

1. windows版本 直接下载编译好的安装包安装即可http://www.voidspace.org.uk/python/modules.shtml#pycrypto

python 3.6

1. 下载一份pycrypto源码https://github.com/dlitz/pycrypto/releases/tag/v2.6.1
2. 安装visual-cpp-build-toolshttp://landinghub.visualstudio.com/visual-cpp-build-tools
3. 添加环境变量VCINSTALLDIR

   C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC
   

4. 在pycrypto目录下开一个命令行窗口，执行：

   set CL=/FI"%VCINSTALLDIR%\\INCLUDE\\stdint.h" %CL%
   

5. 安装pycrypto

   python setup.py install