• Encrypt/Decrypt files with password
• Encrypt/Decrypt memory buffers with password
• Multithreaded DLL

//-------------------------------------------------------
#include "tripledes.h"
//-------------------------------------------------------
        PFILEENCRYPT FileEncrypt;
        PFILEDECRYPT FileDecrypt;
        PENCRYPTBUFFER EncryptBuffer;
        PDECRYPTBUFFER DecryptBuffer;
        PFREEBUFFER FreeBuffer;

       HANDLE hLib = ::LoadLibrary("tripledes.dll");
    if(!hLib)
    	return;

     FileEncrypt = (PFILEENCRYPT) 
	::GetProcAddress(hLib,"FileEncrypt");

     FileDecrypt = (PFILEDECRYPT) 
	::GetProcAddress(hLib,"FileDecrypt");

     EncryptBuffer = (PENCRYPTBUFFER) 
	::GetProcAddress(hLib,"EncryptBuffer");

     DecryptBuffer = (PDECRYPTBUFFER) 
	::GetProcAddress(hLib,"DecryptBuffer");

     FreeBuffer = (PFREEBUFFER) 
	::GetProcAddress(hLib,"FreeBuffer");

     if(!FileEncrypt || !FileDecrypt ||
        !EncryptBuffer || !DecryptBuffer ||
        !FreeBuffer)
        {
         ::FreeLibrary(hLib);
         return;
        }

            // deal with files
      FileEncrypt("C:\\test.txt","123456");
      FileDecrypt("C:\\test.txt","123456");

            //deal with buffers
	DWORD dwEncSize;
	BYTE* encripted = 
	      EncryptBuffer("Yep!",4,"123456",&dwEncSize);

	if(encripted)
	{
	  BYTE* decripted = 
	      DecryptBuffer(encripted,dwEncSize,"123456");

	    if(decripted)
	    {
	     ::MessageBox(NULL,(char*)decripted,NULL,MB_OK);
	       FreeBuffer(decripted);
	    } // if(decripted)

	  FreeBuffer(encripted);
	} // if(encripted)

    ::FreeLibrary(hLib);
//-------------------------------------------------------