A example implementation of the flutter_secure_storage package.
https://pub.dev/packages/flutter_secure_storage
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A Flutter plugin to store data in secure storage:
- Keychain is used for iOS
- AES encryption is used for Android. AES secret key is encrypted with RSA and RSA key is stored in KeyStore
Note KeyStore was introduced in Android 4.3 (API level 18). The plugin wouldn't work for earlier versions.
- Add new items
void _addNewItem() async {
final String key = _randomValue();
final String value = _randomValue();
await _storage.write(key: key, value: value);
_readAll();
}
- Delete all entries
void _deleteAll() async {
await _storage.deleteAll();
_readAll();
}
- Deleting or Modying existing data
Future<Null> _performAction(_ItemActions action, _SecItem item) async {
switch (action) {
case _ItemActions.delete:
await _storage.delete(key: item.key);
_readAll();
break;
case _ItemActions.edit:
final result = await showDialog<String>(
context: context,
builder: (context) => _EditItemWidget(item.value));
if (result != null) {
await _storage.write(key: item.key, value: result);
_readAll();
}
break;
}
}