flutter_secure_storage_plus

Enhanced secure storage with biometric unlock and key rotation.

Supports:

• Android
• iOS
• Web (including WASM)
• Windows
• macOS
• Linux

Features

• Biometric-gated read/write operations (Face ID/Touch ID, Android Biometrics)
• Transparent key rotation helpers
• Secure storage using platform best practices (Keychain/Keystore/Credential Storage)
• Web fallback with WASM-friendly APIs

WASM Compatibility

This package is compatible with Dart WASM. You can use it in Flutter web projects compiled to WASM. See the example for usage.

Installation

Add to your pubspec.yaml:

dependencies:
  flutter_secure_storage_plus: ^0.0.4

Usage

import 'package:flutter_secure_storage_plus/flutter_secure_storage_plus.dart';

final storage = FlutterSecureStoragePlus();

Future<void> example() async {
  await storage.write(key: 'token', value: 'abc', requireBiometrics: true);
  final token = await storage.read(key: 'token', requireBiometrics: true);
  print(token);
}

API surface is evolving; see examples and docs as features land.

Roadmap

• Biometric unlock across platforms
• Key rotation helpers
• Migrations from popular secure storage packages

License

MIT