Flutter Matrix Chat - E2E 加密不适用于 Famedly Matrix SDK

问题描述

我使用 Famedly Matrix SDK 创建了一个 Flutter Chat 应用程序。在这里，我想集成端到端加密，但我无法使其正常工作。我创建了一个用于测试的最小应用程序。下面是源代码。发送未加密的消息按预期工作。我也可以创建加密房间并向其发送消息，但它们在 rom 中都显示为未加密。

一般来说，加密使用的是我用官方 JS SDK 和 React 编写的 JavaScript 版本。

也许你们中的某些人会注意到这里缺少什么。

pubspec.yml

name: chat_app
description: A new Flutter project.

publish_to: "none" # Remove this line if you wish to publish to pub.dev
version: 1.0.0+1

environment:
  sdk: ">=2.12.0 <3.0.0"

dependencies:
  Flutter:
    sdk: Flutter

  Flutter_olm: ^1.1.2
  Flutter_openssl_crypto: ^0.0.1
  cupertino_icons: ^1.0.2
  matrix_api_lite: ^0.3.3
  matrix: ^0.1.5
  moor: 4.3.2
  database: ^0.3.3

dev_dependencies:
  Flutter_test:
    sdk: Flutter

Flutter:
  uses-material-design: true

main.dart

import 'package:Flutter/material.dart';
import 'package:matrix/encryption.dart';
import 'package:matrix/matrix.dart';

Client? client;

void main() {
  client = Client("HappyChat",enableE2eeRecovery: true,verificationMethods: {keyverificationMethod.numbers},supportedLoginTypes: {AuthenticationTypes.password});

  if (client == null) {
    throw ('The client is not initialized');
  }

  var uri = Uri.parse("http://192.168.178.20:8008");
  client!.homeserver = uri;

  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',theme: ThemeData(
        primarySwatch: Colors.blue,),home: MyHomePage(title: 'Flutter Demo Home Page'),);
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key,required this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;
  String _title = 'My Title';
  final roomId = '!RezBsiFvjPJAMnpYpc:cloudbucket1.matrix.host';
  Room? _room;

  _MyHomePageState() {
    this._title = "CONNECTING";
  }

  Future<void> loginClient() async {
    try {
      await client!.login(
          identifier: AuthenticationUserIdentifier(user: 'ppulwey'),password: 'MyPassword');

      print("Client supports encryption ${client!.encryptionEnabled}"); //* This is always false!!!

      this._room = client!.getRoomById(roomId);
      if (this._room == null) {
        throw ('Room not found');
      }

      print("Room is ${this._room!.encrypted ? "already" : "not"} encrypted");

      if (!this._room!.encrypted) {
        this._room!.enableEncryption();
      }

      final joinedRooms = await client!.getJoinedRooms();

      if (!joinedRooms.contains(this.roomId)) {
        this._room!.join();
      }
    } catch (e) {
      print(e);
    }
  }

  Future<void> sendMessage() async {
    try {
       // * Also tried this
      // var eventContent = Map<String,dynamic>();
      // eventContent['body'] = 'Hallo du Äffchen';
      //eventContent['msgtype'] = MessageTypes.Text;
      //_room!.sendEvent(eventContent,type: 'm.room.message');

      _room!.sendTextEvent('Encrypted Now');
    } catch (e) {
      setState(() {
        _title = 'FAIL';
      });
      print(e);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(_title),body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,children: <Widget>[
            Text(
              'You have pushed the button this many times:',Text(
              '$_counter',style: Theme.of(context).textTheme.headline4,ElevatedButton(
                onpressed: loginClient,child: const Text('Initialize'))
          ],floatingActionButton: FloatingActionButton(
        onpressed: sendMessage,tooltip: 'Increment',child: Icon(Icons.add),);
  }
}

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

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