HCERTSTORE hCertStore = CertOpenSystemStore(0, L"MY");

if (nullptr == hCertStore)
{
	errCode = ::GetLastError();
	return {};
}

PCCERT_CONTEXT pContext = nullptr;
std::vector<unsigned char> kpiBuffer;
DWORD kpiSize = 0;

const DWORD propId = CERT_KEY_PROV_INFO_PROP_ID;

while (true)
{
	pContext = ::CertFindCertificateInStore(hCertStore, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, 0,
		CERT_FIND_PROPERTY, &propId, pContext);

	if (nullptr == pContext)
	{
		errCode = ::GetLastError();
		break;
	}

	if (FALSE == ::CertGetCertificateContextProperty(pContext, CERT_KEY_PROV_INFO_PROP_ID, nullptr, &kpiSize))
	{
		errCode = ::GetLastError();
		break;
	}

	kpiBuffer.resize(kpiSize);

	PCRYPT_KEY_PROV_INFO pKeyProvInfo = reinterpret_cast<PCRYPT_KEY_PROV_INFO>(kpiBuffer.data());

	if (FALSE == ::CertGetCertificateContextProperty(pContext, CERT_KEY_PROV_INFO_PROP_ID, pKeyProvInfo, &kpiSize))
	{
		errCode = ::GetLastError();
		break;
	}

	if (AT_SIGNATURE == pKeyProvInfo->dwKeySpec && L"TestCerf" == GetString(CERT_NAME_FRIENDLY_DISPLAY_TYPE, pContext))
	{
		// ... Нашли сертификат
	}
}