loadKey() function for Shabak Challenge Part 2

loadKey.cpp

std::vector<EncryptionStepDescriptor> loadKey(string path) {
	int count = 0;
	ifstream file;
	// We're storing our loaded descriptors in a vector
	std::vector<EncryptionStepDescriptor> descriptors;
	file.open(path, ios::binary);
	cout << "Reading Key..." << endl;
	if (file.is_open()) {
		while (file.good()) {
			// This is our descriptor structure that is going to hold the data loaded directly from the binary
			EncryptionStepDescriptor step;
			if (
				// Load the first byte (8 bits) of the file directly into the chunk of memory that corresponds
				// to our `operationCode` member in `step`
				!file.read(reinterpret_cast<char*>(&step.operationCode), sizeof(uint8_t))
			) {
				// file.good() will return true at the very end of the file, so we want to make sure we stop here
				break;
			}
			// Load the second byte into `operationParameter` and the last 4 bytes (32 bit) into `step`
			file.read(reinterpret_cast<char*>(&step.operationParameter), sizeof(uint8_t));
			file.read(reinterpret_cast<char*>(&step.lengthToOperateOn), sizeof(uint32_t));
			descriptors.push_back(step);
			count++;
		}
		cout << "Loaded " << count << " steps" << endl;
	}
	else {
		cout << "Could not open file" << endl;
	}

	return descriptors;
}