sm2加密，解密，签名，验签,sm3哈希,基于openssl的C语言实现

======================================================================== CONSOLE APPLICATION : sm2 Project Overview ======================================================================== AppWizard has created this sm2 application for you. This file contains a summary of what you will find in each of the files that make up your sm2 application. sm2.vcxproj This is the main project file for VC++ projects generated using an Application Wizard. It contains information about the version of Visual C++ that generated the file, and information about the platforms, configurations, and project features selected with the Application Wizard. sm2.vcxproj.filters This is the filters file for VC++ projects generated using an Application Wizard. It contains information about the association between the files in your project and the filters. This association is used in the IDE to show grouping of files with similar extensions under a specific node (for e.g. ".cpp" files are associated with the "Source Files" filter). sm2.cpp This is the main application source file. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named sm2.pch and a precompiled types file named StdAfx.obj. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" comments to indicate parts of the source code you should add to or customize. /////////////////////////////////////////////////////////////////////////////