Flutter 安全存储平台异常

Question

我正在使用颤振安全存储 (^5.0.2) 来保存令牌，但是当我在模拟器上调用 storage.write() 时出现以下错误（我使用的是 Pixel 5 API 30）而当我使用它时在我的物理设备（Honor 8x）上运行良好：

PlatformException (PlatformException(Exception encountered, write, java.lang.NullPointerException: Attempt to invoke interface method 'byte[] com.it_nomads.fluttersecurestorage.ciphers.StorageCipher.encrypt(byte[])' on a null object reference
    at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin.write(FlutterSecureStoragePlugin.java:202)
    at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin.access$300(FlutterSecureStoragePlugin.java:37)
    at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin$MethodRunner.run(FlutterSecureStoragePlugin.java:289)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:223)
    at android.os.HandlerThread.run(HandlerThread.java:67)
, null))

这是调试的输出：

W/KeyStore( 2975): KeyStore exception
W/KeyStore( 2975): android.os.ServiceSpecificException:  (code 7)
W/KeyStore( 2975):  at android.os.Parcel.createExceptionOrNull(Parcel.java:2387)
W/KeyStore( 2975):  at android.os.Parcel.createException(Parcel.java:2357)
W/KeyStore( 2975):  at android.os.Parcel.readException(Parcel.java:2340)
W/KeyStore( 2975):  at android.os.Parcel.readException(Parcel.java:2282)
W/KeyStore( 2975):  at android.security.keystore.IKeystoreService$Stub$Proxy.get(IKeystoreService.java:988)
W/KeyStore( 2975):  at android.security.KeyStore.get(KeyStore.java:233)
W/KeyStore( 2975):  at android.security.KeyStore.get(KeyStore.java:222)
W/KeyStore( 2975):  at android.security.keystore.AndroidKeyStoreSpi.engineGetCertificate(AndroidKeyStoreSpi.java:165)
W/KeyStore( 2975):  at java.security.KeyStore.getCertificate(KeyStore.java:1120)
W/KeyStore( 2975):  at com.it_nomads.fluttersecurestorage.ciphers.RSACipher18Implementation.getPublicKey(RSACipher18Implementation.java:90)
W/KeyStore( 2975):  at com.it_nomads.fluttersecurestorage.ciphers.RSACipher18Implementation.wrap(RSACipher18Implementation.java:39)
W/KeyStore( 2975):  at com.it_nomads.fluttersecurestorage.ciphers.StorageCipher18Implementation.<init>(StorageCipher18Implementation.java:52)
W/KeyStore( 2975):  at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin.ensureInitialized(FlutterSecureStoragePlugin.java:95)
W/KeyStore( 2975):  at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin.access$100(FlutterSecureStoragePlugin.java:37)
W/KeyStore( 2975):  at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin$MethodRunner.run(FlutterSecureStoragePlugin.java:284)
W/KeyStore( 2975):  at android.os.Handler.handleCallback(Handler.java:938)
W/KeyStore( 2975):  at android.os.Handler.dispatchMessage(Handler.java:99)
W/KeyStore( 2975):  at android.os.Looper.loop(Looper.java:223)
W/KeyStore( 2975):  at android.os.HandlerThread.run(HandlerThread.java:67)
E/FlutterSecureStoragePl( 2975): StorageCipher initialization failed
E/FlutterSecureStoragePl( 2975): java.lang.Exception: No certificate found under alias: com.example.applielikya.FlutterSecureStoragePluginKey
E/FlutterSecureStoragePl( 2975):    at com.it_nomads.fluttersecurestorage.ciphers.RSACipher18Implementation.getPublicKey(RSACipher18Implementation.java:92)
E/FlutterSecureStoragePl( 2975):    at com.it_nomads.fluttersecurestorage.ciphers.RSACipher18Implementation.wrap(RSACipher18Implementation.java:39)
E/FlutterSecureStoragePl( 2975):    at com.it_nomads.fluttersecurestorage.ciphers.StorageCipher18Implementation.<init>(StorageCipher18Implementation.java:52)
E/FlutterSecureStoragePl( 2975):    at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin.ensureInitialized(FlutterSecureStoragePlugin.java:95)
E/FlutterSecureStoragePl( 2975):    at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin.access$100(FlutterSecureStoragePlugin.java:37)
E/FlutterSecureStoragePl( 2975):    at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin$MethodRunner.run(FlutterSecureStoragePlugin.java:284)
E/FlutterSecureStoragePl( 2975):    at android.os.Handler.handleCallback(Handler.java:938)
E/FlutterSecureStoragePl( 2975):    at android.os.Handler.dispatchMessage(Handler.java:99)
E/FlutterSecureStoragePl( 2975):    at android.os.Looper.loop(Looper.java:223)
E/FlutterSecureStoragePl( 2975):    at android.os.HandlerThread.run(HandlerThread.java:67)

我不知道它是否相关，但由于某些软件包需要此版本，因此我的代码中有 min Sdk 19。

我需要这个来在我的应用程序中使用两个不同的帐户（管理员和用户）在 Vscode 上启动我的物理设备和模拟器，以检查通知从一个到另一个的传输，如果存在另一种实现方式我也会知道。

这是代码：

import 'package:applielikya/models/login_response.dart';
import 'package:applielikya/models/user.dart';
import 'package:applielikya/services/auth/login.dart';
import 'package:applielikya/views/homepage.dart';
import 'package:applielikya/widgets/createRoute.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'package:flutter/material.dart';

class LoginPage extends StatefulWidget {
  const LoginPage({Key? key}) : super(key: key);

  @override
  State<LoginPage> createState() => LoginPageState();
}

enum ButtonState { init, loading, done }

class LoginPageState extends State<LoginPage> {
  final Future<SharedPreferences> _prefs = SharedPreferences.getInstance();
  final FlutterSecureStorage storage = const FlutterSecureStorage();
  ButtonState _state = ButtonState.init;
  bool _passwordVisible = false;
  final TextEditingController _usernameController = TextEditingController(text: "kentay");
  final TextEditingController _passwordController = TextEditingController(text: "kentay");
  bool _isAuth = false;
  String _responseMessage = "";

  void saveToken(SuccessResponse response) async {
    await storage.write(key: "accessToken", value: response.accessToken);
    await storage.write(key: "refreshToken", value: response.refreshToken);
  }

  void saveUser(UserResponse user) async {
    final SharedPreferences prefs = await _prefs;
    prefs.setString('username', user.username as String);
    prefs.setInt('id', user.id as int);
    prefs.setString('role', user.role as String);
    if (user.role == "prof") {
      prefs.setString("firstname", user.firstname!);
      prefs.setString("lastname", user.lastname!);
      prefs.setString("email", user.email!);
    }
  }

  submitLogin() async {
    setState(() => _state = ButtonState.loading);
    final response = await login(
      UserRequest(username : _usernameController.text, password: _passwordController.text)
    );

    setState(() {
      _isAuth = response.auth;
      _state = ButtonState.done;
    });

    if (response is SuccessResponse) {
      saveToken(response);
      saveUser(response.user);
      setState(() => _state = ButtonState.init);
      Navigator.of(context).push(
        createRoute(
          const MyHomePage(),
          const Offset(0.0, 1.0),
          Offset.zero,
          Curves.easeInCirc
        )
      );
    } else {
      if (response is ErrorResponse) {
        setState(() => _responseMessage = response.message);
      }
    }
  }

Answer 1

如果它对某人有帮助，我通过在设备参数中清除我的模拟器上的应用程序的数据和缓存来修复它。

Answer 2

我认为问题是最近的更新。 只需为 android 添加以下选项。

final FlutterSecureStorage storage = const FlutterSecureStorage(
    aOptions: AndroidOptions(
      encryptedSharedPreferences: true,
    ),
  );