113 lines
3.5 KiB
Dart
113 lines
3.5 KiB
Dart
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// export_privateKey.dart
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import 'package:flutter/material.dart';
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import 'dart:typed_data';
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import 'dart:convert';
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import 'package:pointycastle/export.dart' as crypto;
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import 'package:file_picker/file_picker.dart';
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class ExportationClePriveePage extends StatefulWidget {
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const ExportationClePriveePage({super.key});
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@override
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_ExportationClePriveePageState createState() => _ExportationClePriveePageState();
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}
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class _ExportationClePriveePageState extends State<ExportationClePriveePage> {
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final TextEditingController _passwordController = TextEditingController();
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Future<void> _exportPrivateKey() async {
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// Replace with your actual private key retrieval logic
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final String privateKeyPem = 'Votre clé privée ici';
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// Get the password from the user input
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final password = _passwordController.text;
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if (password.isEmpty) {
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// Show error message
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return;
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}
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// Encrypt the private key using AES-256
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final encryptedData = _encryptPrivateKey(privateKeyPem, password);
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// Let the user pick a file location
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final outputFile = await FilePicker.platform.saveFile(
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dialogTitle: 'Enregistrer la clé privée chiffrée',
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fileName: 'private_key_encrypted.aes',
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);
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if (outputFile != null) {
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// Write the encrypted data to the file
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// Use appropriate file I/O methods (not shown here)
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// ...
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// Show a confirmation dialog or message
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showDialog(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('Clé Exportée'),
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content: const Text('La clé privée chiffrée a été exportée avec succès.'),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: const Text('OK'),
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),
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],
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),
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);
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}
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}
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Uint8List _encryptPrivateKey(String privateKey, String password) {
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// Encryption logic using AES-256
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final key = crypto.PBKDF2KeyDerivator(crypto.HMac(crypto.SHA256Digest(), 64))
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.process(Uint8List.fromList(utf8.encode(password)));
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final params = crypto.PaddedBlockCipherParameters(
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crypto.ParametersWithIV(crypto.KeyParameter(key), Uint8List(16)), // Initialization Vector
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null,
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);
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final cipher = crypto.PaddedBlockCipher('AES/CBC/PKCS7');
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cipher.init(true, params);
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final input = Uint8List.fromList(utf8.encode(privateKey));
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final output = cipher.process(input);
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return output;
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: Colors.black,
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appBar: AppBar(
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title: const Text('Exportation de la Clé Privée'),
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),
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body: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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children: [
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const Text(
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'Entrez un mot de passe pour chiffrer la clé privée:',
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style: TextStyle(color: Colors.white),
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),
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TextField(
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controller: _passwordController,
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obscureText: true,
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style: const TextStyle(color: Colors.white),
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decoration: const InputDecoration(
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hintText: 'Mot de passe',
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hintStyle: TextStyle(color: Colors.grey),
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),
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),
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const SizedBox(height: 20),
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ElevatedButton(
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onPressed: _exportPrivateKey,
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child: const Text('Exporter la Clé Privée Chiffrée'),
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),
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],
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),
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),
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);
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}
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}
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