read method

Future<String?> read(String key)

Read a value from the system keychain.

Implementation

Future<String?> read(String key) async {
  if (Platform.isMacOS) {
    final result = await Process.run('security', [
      'find-generic-password',
      '-a',
      key,
      '-s',
      serviceName,
      '-w',
    ], stdoutEncoding: utf8);
    if (result.exitCode == 0) {
      return (result.stdout as String).trim();
    }
    return null;
  } else if (Platform.isLinux) {
    final result = await Process.run('secret-tool', [
      'lookup',
      'service',
      serviceName,
      'account',
      key,
    ], stdoutEncoding: utf8);
    if (result.exitCode == 0) {
      return (result.stdout as String).trim();
    }
    return null;
  }
  throw UnsupportedError('SecureStorage is not supported on this platform');
}