std::vector<BYTE> CreateSignSimpleExample(PCCERT_CONTEXT pContext, const std::vector<BYTE> &data)
 {
	CRYPT_SIGN_MESSAGE_PARA signPara = { sizeof(signPara) };
	signPara.dwMsgEncodingType = X509_ASN_ENCODING | PKCS_7_ASN_ENCODING;
	signPara.pSigningCert = pContext; // 0 for window
	signPara.HashAlgorithm.pszObjId = (LPSTR)szOID_CP_GOST_R3411_12_256; //szOID_OIWSEC_sha1;

	signPara.cMsgCert = 1;
	signPara.rgpMsgCert = &pContext;

	CADES_SIGN_PARA cadesSignPara = { sizeof(cadesSignPara) };
	cadesSignPara.dwCadesType = CADES_BES; 
	cadesSignPara.pSignerCert = pContext; 

	CADES_SIGN_MESSAGE_PARA para = { sizeof(para) };
	para.pSignMessagePara = &signPara;
	para.pCadesSignPara = &cadesSignPara;

	std::vector<BYTE> empty;

	const BYTE *pbToBeSigned[] = { &data[0] };
	DWORD cbToBeSigned[] = { (DWORD)data.size() };

	PCRYPT_DATA_BLOB pSignedMessage = 0;
	if(!CadesSignMessage(&para, FALSE, 1, pbToBeSigned, cbToBeSigned, &pSignedMessage))
	{
		ofs << "CadesSignMessage() failed" << std::endl;
		//ofs << getLastError() << std::endl;
		return empty;
	}

	std::vector<BYTE> message(pSignedMessage->cbData);
	std::copy(pSignedMessage->pbData, pSignedMessage->pbData + pSignedMessage->cbData, message.begin());

	if(!CadesFreeBlob(pSignedMessage))
	{
		ofs << "CadesFreeBlob() failed" << std::endl;
		ofs << "Error:" << GetLastError() << std::endl;
		return empty;
	}
	return message;
 }