Mine

// ExportCert.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <windows.h>
#include "Certificate.h"
#include "CertificateStore.h"
#include "conio.h"
#include <iostream>
#include <wchar.h>
#include <stdio.h>
#include "WinCrypt.h"
using namespace std;
const char CONST_CURRENTUSER_CERTSTORE[]	= "MY";//certificate
const char CONST_VALVE_CYBER_CAFE_PROGRAM[] = "Valve Cyber Cafe Program";//certificate
int _tmain(int argc, _TCHAR* argv[])
{
	CCertificateStore* CertStore = new CCertificateStore();
	if(CertStore->Open(CONST_CURRENTUSER_CERTSTORE))
	{
		//_cprintf("CertStore opened.\n");
		if(PCCERT_CONTEXT pCertContext = CertStore->FindNewestCert(CONST_VALVE_CYBER_CAFE_PROGRAM, PKCS_7_ASN_ENCODING | X509_ASN_ENCODING, CERT_FIND_ISSUER_STR_A))
		{
			//Certificate Found
			CCertificate* Cert = new CCertificate(pCertContext);
			//Login
			if (Cert->GetUserKey())
			{
				BYTE holder[1000];
				Cert->hUserKey;
				DWORD pdwBlobLen = 1000;
				DWORD dwBlobLength;
				LPBYTE ppbKeyBlob = &holder[0];
				pdwBlobLen = 0;
				DWORD dwBlobType = PUBLICKEYBLOB;
				// Export the public key. Here the public key is exported to a 
				// PUBLICKEYBLOB. This BLOB can be written to a file and
				// sent to another user.

				if(CryptExportKey(   
					Cert->hUserKey,    
					NULL,    
					dwBlobType,
					0,    
					NULL, 
					&dwBlobLength)) 
				{
					printf("Size of the BLOB for the public key determined. \n");

					// Allocate memory for the pbKeyBlob.
					if(ppbKeyBlob = (LPBYTE)malloc(dwBlobLength)) 
					{
						printf("Memory has been allocated for the BLOB. \n");
						if(CryptExportKey(   
							Cert->hUserKey, 
							NULL,    
							dwBlobType,    
							0,    
							ppbKeyBlob,    
							&dwBlobLength))
						{
							printf("Contents have been written to the BLOB. \n");
							pdwBlobLen = dwBlobLength;
						}
						else
						{
							printf("Error exporting key.\n");
							free(ppbKeyBlob);
							ppbKeyBlob = NULL;
						}
					}
					else
					{
						printf("Out of memory. \n");
					}
				}
				else
				{
					printf("Error computing BLOB length.\n");
				}
			}
		}
		CertStore->Close();
		delete CertStore;
	}
	return 0;
}