crossvault 1.0.1 
crossvault: ^1.0.1 copied to clipboard
Secure cross-platform vault for Flutter using native storage (iOS Keychain, Android Keystore, Windows Credential Manager). Supports iCloud sync, Auto Backup, and TPM.
import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:io';
import 'package:crossvault/crossvault.dart';
void main() async {
WidgetsFlutterBinding.ensureInitialized();
// Example: Initialize with global configuration for all platforms (optional)
// Uncomment to test with platform-specific settings
/*
await Crossvault.init(
config: CrossvaultConfig(
ios: IOSOptions(
accessGroup: 'io.alexmelnyk.crossvault.shared',
synchronizable: true,
accessibility: IOSAccessibility.afterFirstUnlock,
),
macos: MacOSOptions(
accessGroup: 'io.alexmelnyk.crossvault.shared',
synchronizable: true,
accessibility: MacOSAccessibility.afterFirstUnlock,
),
android: AndroidOptions(
sharedPreferencesName: 'crossvault_secure_storage',
resetOnError: true,
),
windows: WindowsOptions(
prefix: 'crossvault',
persist: WindowsPersist.localMachine,
),
),
);
*/
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Crossvault Demo',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
),
home: const CrossvaultDemo(),
);
}
}
class CrossvaultDemo extends StatefulWidget {
const CrossvaultDemo({super.key});
@override
State<CrossvaultDemo> createState() => _CrossvaultDemoState();
}
class _CrossvaultDemoState extends State<CrossvaultDemo> {
final _crossvault = Crossvault();
final _keyController = TextEditingController();
final _valueController = TextEditingController();
String _platformVersion = 'Unknown';
String _result = '';
bool _isLoading = false;
StorageMode _storageMode = StorageMode.privateMode;
@override
void initState() {
super.initState();
_initPlatformState();
}
@override
void dispose() {
_keyController.dispose();
_valueController.dispose();
super.dispose();
}
Future<void> _initPlatformState() async {
try {
// Detect platform
if (Platform.isIOS) {
_platformVersion = 'iOS';
} else if (Platform.isAndroid) {
_platformVersion = 'Android';
} else if (Platform.isMacOS) {
_platformVersion = 'macOS';
} else if (Platform.isWindows) {
_platformVersion = 'Windows';
} else if (Platform.isLinux) {
_platformVersion = 'Linux';
} else {
_platformVersion = 'Unknown';
}
setState(() {});
} catch (e) {
setState(() => _platformVersion = 'Error: $e');
}
}
Future<void> _executeOperation(Future<void> Function() operation) async {
setState(() {
_isLoading = true;
_result = '';
});
try {
await operation();
} catch (e) {
setState(() => _result = 'Error: $e');
} finally {
setState(() => _isLoading = false);
}
}
String _getModeDescription() {
if (_storageMode == StorageMode.privateMode) {
return '🔒 Private: Data stored only for this app';
}
// Shared mode descriptions per platform
if (Platform.isIOS || Platform.isMacOS) {
return '🌐 Shared: iCloud Keychain sync (real-time, requires Apple ID)';
} else if (Platform.isAndroid) {
return '🌐 Shared: Auto Backup to Google Drive (~24h, requires Google account)';
} else if (Platform.isWindows) {
return '🌐 Shared: Windows Credential Manager (local machine)';
}
return '🔒 Private mode';
}
CrossvaultConfig? _getConfig() {
if (_storageMode == StorageMode.privateMode) {
return null; // Use default (private)
}
// Shared mode with platform-specific configuration
return CrossvaultConfig(
ios: IOSOptions(
accessGroup: 'io.alexmelnyk.crossvault.shared',
synchronizable: true, // Enable iCloud Keychain sync
accessibility: IOSAccessibility.afterFirstUnlock,
),
macos: MacOSOptions(
accessGroup: 'io.alexmelnyk.crossvault.shared',
synchronizable: true, // Enable iCloud Keychain sync
accessibility: MacOSAccessibility.afterFirstUnlock,
),
android: AndroidOptions(
sharedPreferencesName: 'crossvault_secure_storage',
resetOnError: true, // Auto-reset on decryption error
),
// Note: Android uses Auto Backup (configured in AndroidManifest.xml)
// Backup happens automatically every ~24 hours to Google Drive
windows: WindowsOptions(
prefix: 'crossvault',
persist: WindowsPersist.localMachine,
),
);
}
Future<void> _setValue() async {
final key = _keyController.text.trim();
final value = _valueController.text.trim();
if (key.isEmpty || value.isEmpty) {
setState(() => _result = 'Error: Key and value are required');
return;
}
await _executeOperation(() async {
await _crossvault.setValue(key, value, config: _getConfig());
setState(() => _result = 'Success: Value saved for key "$key"');
});
}
Future<void> _getValue() async {
final key = _keyController.text.trim();
if (key.isEmpty) {
setState(() => _result = 'Error: Key is required');
return;
}
await _executeOperation(() async {
final value = await _crossvault.getValue(key, config: _getConfig());
setState(() {
if (value != null) {
_result = 'Value: $value';
_valueController.text = value;
} else {
_result = 'Key "$key" not found';
}
});
});
}
Future<void> _existsKey() async {
final key = _keyController.text.trim();
if (key.isEmpty) {
setState(() => _result = 'Error: Key is required');
return;
}
await _executeOperation(() async {
final exists = await _crossvault.existsKey(key, config: _getConfig());
setState(() => _result = 'Key "$key" ${exists ? "exists" : "does not exist"}');
});
}
Future<void> _deleteValue() async {
final key = _keyController.text.trim();
if (key.isEmpty) {
setState(() => _result = 'Error: Key is required');
return;
}
await _executeOperation(() async {
await _crossvault.deleteValue(key, config: _getConfig());
setState(() => _result = 'Success: Key "$key" deleted');
_valueController.clear();
});
}
Future<void> _deleteAll() async {
final confirmed = await showDialog<bool>(
context: context,
builder: (context) => AlertDialog(
title: const Text('Confirm Delete All'),
content: const Text('Are you sure you want to delete all stored values?'),
actions: [
TextButton(
onPressed: () => Navigator.pop(context, false),
child: const Text('Cancel'),
),
TextButton(
onPressed: () => Navigator.pop(context, true),
child: const Text('Delete All', style: TextStyle(color: Colors.red)),
),
],
),
);
if (confirmed != true) return;
await _executeOperation(() async {
await _crossvault.deleteAll(config: _getConfig());
setState(() => _result = 'Success: All values deleted');
_keyController.clear();
_valueController.clear();
});
}
@override
Widget build(BuildContext context) {
// Add top padding for macOS traffic light buttons
final topPadding = Platform.isMacOS ? 40.0 : 0.0;
return Scaffold(
appBar: AppBar(
title: const Text('Crossvault Demo'),
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
),
body: SingleChildScrollView(
padding: EdgeInsets.fromLTRB(16, 16 + topPadding, 16, 16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
// Platform Info
Card(
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Platform Information',
style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
),
const SizedBox(height: 8),
Text('Running on: $_platformVersion'),
],
),
),
),
const SizedBox(height: 16),
// Storage Mode Selector
Card(
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Storage Mode',
style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
),
const SizedBox(height: 8),
SegmentedButton<StorageMode>(
segments: const [
ButtonSegment(
value: StorageMode.privateMode,
label: Text('Private'),
icon: Icon(Icons.lock),
),
ButtonSegment(
value: StorageMode.sharedMode,
label: Text('Shared'),
icon: Icon(Icons.share),
),
],
selected: {_storageMode},
onSelectionChanged: (Set<StorageMode> newSelection) {
setState(() => _storageMode = newSelection.first);
},
),
const SizedBox(height: 8),
Text(
_getModeDescription(),
style: TextStyle(
fontSize: 12,
color: Colors.grey[600],
),
),
],
),
),
),
const SizedBox(height: 16),
// Input Fields
Card(
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Key-Value Storage',
style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
),
const SizedBox(height: 16),
TextField(
controller: _keyController,
decoration: const InputDecoration(
labelText: 'Key',
hintText: 'e.g., api_token',
border: OutlineInputBorder(),
prefixIcon: Icon(Icons.key),
),
),
const SizedBox(height: 12),
TextField(
controller: _valueController,
decoration: const InputDecoration(
labelText: 'Value',
hintText: 'e.g., secret_value_123',
border: OutlineInputBorder(),
prefixIcon: Icon(Icons.text_fields),
),
maxLines: 3,
),
],
),
),
),
const SizedBox(height: 16),
// Action Buttons
Card(
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
const Text(
'Operations',
style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
),
const SizedBox(height: 12),
Wrap(
spacing: 8,
runSpacing: 8,
children: [
ElevatedButton.icon(
onPressed: _isLoading ? null : _setValue,
icon: const Icon(Icons.save),
label: const Text('Set Value'),
),
ElevatedButton.icon(
onPressed: _isLoading ? null : _getValue,
icon: const Icon(Icons.download),
label: const Text('Get Value'),
),
ElevatedButton.icon(
onPressed: _isLoading ? null : _existsKey,
icon: const Icon(Icons.search),
label: const Text('Check Exists'),
),
ElevatedButton.icon(
onPressed: _isLoading ? null : _deleteValue,
icon: const Icon(Icons.delete),
label: const Text('Delete Key'),
style: ElevatedButton.styleFrom(
backgroundColor: Colors.orange,
foregroundColor: Colors.white,
),
),
ElevatedButton.icon(
onPressed: _isLoading ? null : _deleteAll,
icon: const Icon(Icons.delete_forever),
label: const Text('Delete All'),
style: ElevatedButton.styleFrom(
backgroundColor: Colors.red,
foregroundColor: Colors.white,
),
),
],
),
],
),
),
),
const SizedBox(height: 16),
// Result Display
if (_result.isNotEmpty || _isLoading)
Card(
color: _result.startsWith('Error')
? Colors.red[50]
: _result.startsWith('Success')
? Colors.green[50]
: Colors.blue[50],
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
Icon(
_result.startsWith('Error')
? Icons.error_outline
: _result.startsWith('Success')
? Icons.check_circle_outline
: Icons.info_outline,
color: _result.startsWith('Error')
? Colors.red
: _result.startsWith('Success')
? Colors.green
: Colors.blue,
),
const SizedBox(width: 8),
const Text(
'Result',
style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
),
],
),
const SizedBox(height: 8),
if (_isLoading)
const Center(child: CircularProgressIndicator())
else
Text(_result),
],
),
),
),
const SizedBox(height: 16),
// Quick Examples
Card(
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Quick Examples',
style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
),
const SizedBox(height: 8),
_buildQuickExample('user_token', 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9'),
_buildQuickExample('api_key', 'sk_test_1234567890'),
_buildQuickExample('user_email', 'user@example.com'),
],
),
),
),
],
),
),
);
}
Widget _buildQuickExample(String key, String value) {
return ListTile(
dense: true,
leading: const Icon(Icons.flash_on, size: 20),
title: Text(key, style: const TextStyle(fontSize: 14)),
subtitle: Text(value, style: const TextStyle(fontSize: 12)),
trailing: IconButton(
icon: const Icon(Icons.arrow_forward, size: 20),
onPressed: () {
setState(() {
_keyController.text = key;
_valueController.text = value;
});
},
),
);
}
}
enum StorageMode {
privateMode,
sharedMode,
}Metadata
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Metadata
Secure cross-platform vault for Flutter using native storage (iOS Keychain, Android Keystore, Windows Credential Manager). Supports iCloud sync, Auto Backup, and TPM.
Homepage
Repository (GitHub)
View/report issues
Topics
#security #encryption #keychain #keystore #secure-storage
Documentation
License
unknown (license)
Dependencies
crossvault_android, crossvault_ios, crossvault_macos, crossvault_platform_interface, crossvault_windows, flutter
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