secrets property

@override Future<AuthenticationSecretsModel> get secrets

Retrieves the secrets from a potentially secure place.

Implementation

@override
Future<AuthenticationSecretsModel> get secrets async {
  final file = File(secretsFile);
  if (file.existsSync()) {
    final map = json.decode(file.readAsStringSync()) as Map<String, dynamic>;
    final model = AuthenticationSecretsModel()..loadFromMap(map);

    return model;
  }

  file.createSync(recursive: true);
  final myRandom = random ?? Random.secure();
  final hasher = PasswordHasher(pepper: '', random: myRandom);
  final ivBase64 = IV(
    Uint8List.fromList(
      List.generate(16, (i) => myRandom.nextInt(256)),
    ),
  ).base64;
  final saltBase64 = IV(
    Uint8List.fromList(
      List.generate(32, (i) => myRandom.nextInt(256)),
    ),
  ).base64;

  final newModel = AuthenticationSecretsModel()
    ..methodMinHashes = myRandom.nextInt(200) + 100
    ..methodMaxHashes = myRandom.nextInt(200) + 600
    ..pepper = hasher.generateSalt(length: myRandom.nextInt(32) + 64)
    ..methodIv64 = ivBase64
    ..methodSalt64 = saltBase64;

  file.writeAsStringSync(json.encode(newModel.toMap()));

  return newModel;
}