diff --git a/loc_chain_app/lib/main.dart b/loc_chain_app/lib/main.dart index d8a0526..7684568 100644 --- a/loc_chain_app/lib/main.dart +++ b/loc_chain_app/lib/main.dart @@ -1,113 +1,20 @@ import 'package:flutter/material.dart'; +import 'package:loc_chain_app/widgets/navbar.dart'; void main() { - runApp(MyApp()); + runApp(App()); } -class MyApp extends StatelessWidget { +class App extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( - // This is the theme of your application. - // - // Try running your application with "flutter run". You'll see the - // application has a blue toolbar. Then, without quitting the app, try - // changing the primarySwatch below to Colors.green and then invoke - // "hot reload" (press "r" in the console where you ran "flutter run", - // or simply save your changes to "hot reload" in a Flutter IDE). - // Notice that the counter didn't reset back to zero; the application - // is not restarted. - primarySwatch: Colors.blue, + primarySwatch: Colors.lightBlue, ), - home: MyHomePage(title: 'Flutter Demo Home Page'), - ); - } -} - -class MyHomePage extends StatefulWidget { - MyHomePage({Key key, this.title}) : super(key: key); - - // This widget is the home page of your application. It is stateful, meaning - // that it has a State object (defined below) that contains fields that affect - // how it looks. - - // This class is the configuration for the state. It holds the values (in this - // case the title) provided by the parent (in this case the App widget) and - // used by the build method of the State. Fields in a Widget subclass are - // always marked "final". - - final String title; - - @override - _MyHomePageState createState() => _MyHomePageState(); -} - -class _MyHomePageState extends State { - int _counter = 0; - - void _incrementCounter() { - setState(() { - // This call to setState tells the Flutter framework that something has - // changed in this State, which causes it to rerun the build method below - // so that the display can reflect the updated values. If we changed - // _counter without calling setState(), then the build method would not be - // called again, and so nothing would appear to happen. - _counter++; - }); - } - - @override - Widget build(BuildContext context) { - // This method is rerun every time setState is called, for instance as done - // by the _incrementCounter method above. - // - // The Flutter framework has been optimized to make rerunning build methods - // fast, so that you can just rebuild anything that needs updating rather - // than having to individually change instances of widgets. - return Scaffold( - appBar: AppBar( - // Here we take the value from the MyHomePage object that was created by - // the App.build method, and use it to set our appbar title. - title: Text(widget.title), - ), - body: Center( - // Center is a layout widget. It takes a single child and positions it - // in the middle of the parent. - child: Column( - // Column is also a layout widget. It takes a list of children and - // arranges them vertically. By default, it sizes itself to fit its - // children horizontally, and tries to be as tall as its parent. - // - // Invoke "debug painting" (press "p" in the console, choose the - // "Toggle Debug Paint" action from the Flutter Inspector in Android - // Studio, or the "Toggle Debug Paint" command in Visual Studio Code) - // to see the wireframe for each widget. - // - // Column has various properties to control how it sizes itself and - // how it positions its children. Here we use mainAxisAlignment to - // center the children vertically; the main axis here is the vertical - // axis because Columns are vertical (the cross axis would be - // horizontal). - mainAxisAlignment: MainAxisAlignment.center, - children: [ - Text( - 'You have pushed the button this many times:', - ), - Text( - '$_counter', - style: Theme.of(context).textTheme.headline4, - ), - ], - ), - ), - floatingActionButton: FloatingActionButton( - onPressed: _incrementCounter, - tooltip: 'Increment', - child: Icon(Icons.add), - ), // This trailing comma makes auto-formatting nicer for build methods. + home: NavBarWidget(), ); } } diff --git a/loc_chain_app/lib/pages/home.dart b/loc_chain_app/lib/pages/home.dart new file mode 100644 index 0000000..f207349 --- /dev/null +++ b/loc_chain_app/lib/pages/home.dart @@ -0,0 +1,52 @@ +import 'package:flutter/material.dart'; + +class HomePage extends StatefulWidget { + HomePage({Key key, this.title}) : super(key: key); + final String title; + + @override + _HomePageState createState() => _HomePageState(); +} + +class _HomePageState extends State { + int _counter = 0; + + void _incrementCounter() { + setState(() { + // This call to setState tells the Flutter framework that something has + // changed in this State, which causes it to rerun the build method below + // so that the display can reflect the updated values. If we changed + // _counter without calling setState(), then the build method would not be + // called again, and so nothing would appear to happen. + _counter++; + }); + } + + @override + Widget build(BuildContext context) { + return Scaffold( + appBar: AppBar( + title: Text(widget.title), + ), + body: Center( + child: Column( + mainAxisAlignment: MainAxisAlignment.center, + children: [ + Text( + 'You have pushed the button this many times:', + ), + Text( + '$_counter', + style: Theme.of(context).textTheme.headline4, + ), + ], + ), + ), + floatingActionButton: FloatingActionButton( + onPressed: _incrementCounter, + tooltip: 'Increment', + child: Icon(Icons.add), + ), + ); + } +} diff --git a/loc_chain_app/lib/pages/keygen.dart b/loc_chain_app/lib/pages/keygen.dart new file mode 100644 index 0000000..10376d1 --- /dev/null +++ b/loc_chain_app/lib/pages/keygen.dart @@ -0,0 +1,89 @@ +import 'package:flutter/material.dart'; +import 'package:flutter/services.dart'; +import 'package:rsa_encrypt/rsa_encrypt.dart' as rsa; +import 'package:pointycastle/api.dart' as crypto; + +class KeygenPage extends StatefulWidget { + KeygenPage({Key key, this.title}) : super(key: key); + final String title; + + @override + _KeygenState createState() => _KeygenState(); +} + +class _KeygenState extends State { + static crypto.AsymmetricKeyPair _keyPair; + + void _regenerateKey() { + setState(() { + _keyPair = rsa.getRsaKeyPair(rsa.RsaKeyHelper().getSecureRandom()); + }); + } + + String _getPublicKey() { + if (_keyPair == null) + return 'Press the button below to generate your key pair!'; + return '${rsa.RsaKeyHelper().encodePublicKeyToPemPKCS1(_keyPair.publicKey)}'; + } + + @override + Widget build(BuildContext context) { + // This method is rerun every time setState is called, for instance as done + // by the _incrementCounter method above. + // + // The Flutter framework has been optimized to make rerunning build methods + // fast, so that you can just rebuild anything that needs updating rather + // than having to individually change instances of widgets. + return Scaffold( + appBar: AppBar( + // Here we take the value from the MyHomePage object that was created by + // the App.build method, and use it to set our appbar title. + title: Text('RSA Key Configuration'), + ), + body: Center( + // Center is a layout widget. It takes a single child and positions it + // in the middle of the parent. + child: Column( + // Column is also a layout widget. It takes a list of children and + // arranges them vertically. By default, it sizes itself to fit its + // children horizontally, and tries to be as tall as its parent. + // + // Invoke "debug painting" (press "p" in the console, choose the + // "Toggle Debug Paint" action from the Flutter Inspector in Android + // Studio, or the "Toggle Debug Paint" command in Visual Studio Code) + // to see the wireframe for each widget. + // + // Column has various properties to control how it sizes itself and + // how it positions its children. Here we use mainAxisAlignment to + // center the children vertically; the main axis here is the vertical + // axis because Columns are vertical (the cross axis would be + // horizontal). + mainAxisAlignment: MainAxisAlignment.center, + children: [ + TextButton( + onPressed: () => Clipboard.setData( + new ClipboardData( + text: _getPublicKey(), + ), + ).then((_) { + ScaffoldMessenger.of(context).showSnackBar(SnackBar( + content: Text("RSA public key copied to keyboard"), + )); + }), + child: Text( + _getPublicKey(), + style: Theme.of(context).textTheme.bodyText1, + ), + style: Theme.of(context).outlinedButtonTheme.style, + ), + ElevatedButton( + onPressed: _regenerateKey, + child: Text('Reset RSA Key'), + style: Theme.of(context).elevatedButtonTheme.style, + ), + ], + ), + ), + ); + } +} diff --git a/loc_chain_app/lib/widgets/navbar.dart b/loc_chain_app/lib/widgets/navbar.dart new file mode 100644 index 0000000..51c3b07 --- /dev/null +++ b/loc_chain_app/lib/widgets/navbar.dart @@ -0,0 +1,50 @@ +import 'package:flutter/material.dart'; +import 'package:loc_chain_app/pages/home.dart'; +import 'package:loc_chain_app/pages/keygen.dart'; + +class NavBarWidget extends StatefulWidget { + NavBarWidget({Key key}) : super(key: key); + + @override + _NavBarWidgetState createState() => _NavBarWidgetState(); +} + +class _NavBarWidgetState extends State { + int _selectedIndex = 0; + StatefulWidget _selectedWidget; + static List pages = [ + HomePage( + title: 'Home', + ), + KeygenPage( + title: 'RSA Configuration', + ), + ]; + void _onItemTapped(int index) => setState(() { + _selectedIndex = index; + _selectedWidget = pages[_selectedIndex]; + }); + + @override + Widget build(context) => Scaffold( + body: _selectedWidget, + bottomNavigationBar: BottomNavigationBar( + items: const [ + BottomNavigationBarItem( + icon: Icon(Icons.home_rounded), + label: 'Home', + backgroundColor: Colors.cyan, + ), + BottomNavigationBarItem( + icon: Icon(Icons.lock_rounded), + label: 'RSA Configuration', + backgroundColor: Colors.cyan, + ), + ], + currentIndex: _selectedIndex, + selectedItemColor: Colors.lightBlueAccent, + unselectedItemColor: Colors.lightBlue[200], + onTap: _onItemTapped, + ), + ); +} diff --git a/loc_chain_app/pubspec.lock b/loc_chain_app/pubspec.lock index 763ea98..9c104f8 100644 --- a/loc_chain_app/pubspec.lock +++ b/loc_chain_app/pubspec.lock @@ -1,6 +1,13 @@ # Generated by pub # See https://dart.dev/tools/pub/glossary#lockfile packages: + asn1lib: + dependency: transitive + description: + name: asn1lib + url: "https://pub.dartlang.org" + source: hosted + version: "0.8.1" async: dependency: transitive description: @@ -88,6 +95,20 @@ packages: url: "https://pub.dartlang.org" source: hosted version: "1.8.0" + pointycastle: + dependency: transitive + description: + name: pointycastle + url: "https://pub.dartlang.org" + source: hosted + version: "2.0.1" + rsa_encrypt: + dependency: "direct main" + description: + name: rsa_encrypt + url: "https://pub.dartlang.org" + source: hosted + version: "1.0.5" sky_engine: dependency: transitive description: flutter diff --git a/loc_chain_app/pubspec.yaml b/loc_chain_app/pubspec.yaml index 2e7e403..5469f50 100644 --- a/loc_chain_app/pubspec.yaml +++ b/loc_chain_app/pubspec.yaml @@ -28,6 +28,7 @@ dependencies: # The following adds the Cupertino Icons font to your application. # Use with the CupertinoIcons class for iOS style icons. cupertino_icons: ^1.0.2 + rsa_encrypt: ^1.0.5 dev_dependencies: flutter_test: