import 'dart:typed_data'; import 'package:flutter/material.dart'; import 'dart:async'; import 'package:flutter/services.dart'; import 'package:native_crypto_platform_interface/native_crypto_platform_interface.dart'; void main() { runApp(const MyApp()); } class MyApp extends StatefulWidget { const MyApp({Key? key}) : super(key: key); @override State createState() => _MyAppState(); } class _MyAppState extends State { String _platformVersion = 'Unknown'; @override void initState() { super.initState(); initPlatformState(); } // Platform messages are asynchronous, so we initialize in an async method. Future initPlatformState() async { NativeCryptoPlatform _nativeCryptoPlatform = NativeCryptoPlatform.instance; String platformVersion; // Platform messages may fail, so we use a try/catch PlatformException. // We also handle the message potentially returning null. Uint8List? sk = await _nativeCryptoPlatform.generateSecretKey(256); print(sk ?? 'null'); Uint8List? ciphertext = await _nativeCryptoPlatform.encrypt(Uint8List.fromList("abc".codeUnits), sk!, "aes"); print(ciphertext ?? 'null'); Uint8List? plaintext = await _nativeCryptoPlatform.decrypt(ciphertext!, sk, "aes"); print(plaintext ?? 'null'); Uint8List? kp = await _nativeCryptoPlatform.generateKeyPair(); print(kp!.sublist(0, 31)); print(kp.sublist(32).length); Uint8List? sharedSecret = await _nativeCryptoPlatform.generateSharedSecretKey(Uint8List.fromList("salt".codeUnits), 32, kp.sublist(0, 31), kp.sublist(32), "sha256"); try { platformVersion = 'Unknown platform version'; } on PlatformException { platformVersion = 'Failed to get platform version.'; } // If the widget was removed from the tree while the asynchronous platform // message was in flight, we want to discard the reply rather than calling // setState to update our non-existent appearance. if (!mounted) return; setState(() { _platformVersion = platformVersion; }); } @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( appBar: AppBar( title: const Text('Plugin example app'), ), body: Center( child: Text('Running on: $_platformVersion\n'), ), ), ); } }