L_DEBUG << "Success: Got CryptoProvider container private key handle";		
                        DWORD notafter_size = 0;
			if (!CryptGetKeyParam(hKey, KP_NOTAFTER, NULL, &notafter_size, 0)) {
				L_ERROR << "Can't get private key not after size.";
			}

			L_DEBUG << "Success: Got private key KP_NOTAFTER size";
			BYTE* pb_notAfter = nullptr;
			BOOST_SCOPE_EXIT(&pb_notAfter) {
				if (pb_notAfter)
					free(pb_notAfter);
			} BOOST_SCOPE_EXIT_END;
			if (!(pb_notAfter = (BYTE*)malloc(notafter_size))) {
				THROW_AND_ELOG<std::runtime_error>( "Error while allocating memory for private key not after_size");
			}
			L_DEBUG << "Success: Got private key KP_NOTAFTER memory allocation";

			if (!CryptGetKeyParam(hKey, KP_NOTAFTER, pb_notAfter, &notafter_size, 0)) {
				L_ERROR <<  "Error occurred while getting private key not after";
			} else
			{
				L_DEBUG << "Success: Got private key KP_NOTAFTER readed";
				const auto NotAfter = to_string_FILETIME(*((FILETIME*)pb_notAfter));
                                ...
                        }