// .... получаю мой сертификат

	//....
	

	HCRYPTPROV hProv;

	DWORD dwKeySpec; 

	BOOL fCallerFreeProv; 



	if(!CryptAcquireCertificatePrivateKey(

		pSignerCert, 

		CRYPT_ACQUIRE_COMPARE_KEY_FLAG, 

		NULL, 

		&hProv, 

		&dwKeySpec, 

		&fCallerFreeProv 

	))

	{

             return -3;

	}





	

	HCRYPTKEY hUserKey;



	if(! CryptGetUserKey(hProv,AT_KEYEXCHANGE,&hUserKey))

	{

             return -4;

	}



	HCRYPTHASH hHash;

	

	if(!CryptCreateHash(

		hProv, 

		CertOIDToAlgId("1.2.643.2.2.9"),//alg.aiAlgid, 

		hUserKey, 

		0, 

		&hHash)) 

	{

		return -5;

	}



    HANDLE hFile = NULL;

    BYTE rgbFile[BUFSIZE];

    DWORD cbRead = 0;

    DWORD dwStatus = 0;

    BOOL bResult = FALSE;



	hFile = CreateFile(file_name,

        GENERIC_READ,

        FILE_SHARE_READ,

        NULL,

        OPEN_EXISTING,

        FILE_FLAG_SEQUENTIAL_SCAN,

        NULL);



    if (INVALID_HANDLE_VALUE == hFile)

	{

	return -6;

	}



    while (bResult = ReadFile(hFile, rgbFile, 1024, 

        &cbRead, NULL))

    {

        if (0 == cbRead)

        {

            break;

        }



        if (!CryptHashData(hHash, rgbFile, cbRead, 0))

		{

		return -7;

		}

    }



    if (!bResult)

	{

		return -8;

	}





	BYTE  *pbSignature;

	DWORD dwSigLen;



	if(!CryptSignHash(

		hHash, 

		dwKeySpec,//AT_KEYEXCHANGE,

		NULL, 

		0, 

		NULL, 

		&dwSigLen)) 

	{

		return -9;

	}



	if((pbSignature = new BYTE[dwSigLen]) == 0) 

	{

		return -10;

	}



	if(!CryptSignHash(

		hHash, 

		dwKeySpec,

		NULL, 

		0, 

		pbSignature, 

		&dwSigLen)) 

	{

		return -11;

	}



	FILE *sf;



	if(_waccess(sign_file,0)==0)

	{

		sf = _wfopen(sign_file,L"rb+");

		if(sf!=NULL)

			fseek(sf,0,SEEK_END);

	} else

	{

		sf = _wfopen(sign_file,L"wb");

	}



	if(sf==NULL)

	{

		return -12;

	}



	if(fwrite(pbSignature,dwSigLen,1,sf)!=1)

	{

		fclose(sf);

		return -13;

	}



	fclose(sf);