Function readKeyFile

pkg/blobserver/encrypt/encrypt.go:324–345

(keyFile string)

}

func readKeyFile(keyFile string) (string, error) {
	if err := checkKeyFilePermissions(keyFile); err != nil {
		return "", fmt.Errorf("error checking key file permissions: %w", err)
	}
	f, err := os.Open(keyFile)
	if err != nil {
		return "", fmt.Errorf("error opening key file: %w", err)
	}
	defer f.Close()

	keyScanner := bufio.NewScanner(f)
	if !keyScanner.Scan() {
		return "", errors.New("empty key file")
	}
	keyData := keyScanner.Text()

	if keyScanner.Scan() {
		return "", errors.New("key file contained multiple lines")
	}

	return keyData, keyScanner.Err()
}