aes_gcm_crypto 0.0.1

AES-GCM encryption and decryption utility with PBKDF2 key derivation support for Flutter apps.

example/lib/main.dart

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'dart:async';

import 'package:aes_gcm_crypto/aes_gcm_crypto.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const AesGcmExample());
}

class AesGcmExample extends StatefulWidget {
  const AesGcmExample({super.key});

  @override
  State<AesGcmExample> createState() => _AesGcmExampleState();
}

class _AesGcmExampleState extends State<AesGcmExample> {
  final AesGcmCrypto aesGcmCrypto = AesGcmCrypto.instance;

  String plainText = "";
  String masterKey = "";
  String encrypted = "";
  String decrypted = "";

  @override
  void initState() {
    super.initState();
    initialize();
  }

  Future<void> initialize() async {
    if (!mounted) return;

    if (kIsWeb) {
      await aesGcmCrypto.init();
    }

    plainText = "hello";
    debugPrint("PlainText: $plainText");

    masterKey = "securePassword1234567890AWErTYuI";
    debugPrint("MasterKey: $masterKey");

    debugPrint(masterKey.length.toString());

    encrypted = await aesGcmCrypto.encryptAesGcm(masterKey: masterKey, plainText: plainText);
    debugPrint("Encrypted: $encrypted");

    decrypted = await aesGcmCrypto.decryptAesGcm(masterKey: masterKey, cipherText: encrypted);
    debugPrint("Decrypted: $decrypted");

    setState(() {});
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('AES-GCM Example'),
        ),
        body: Center(
          child: Container(
            margin: const EdgeInsets.all(16),
            decoration: BoxDecoration(
              border: Border.all(color: Colors.grey),
              borderRadius: BorderRadius.circular(8),
            ),
            child: SingleChildScrollView(
              scrollDirection: Axis.horizontal,
              child: DataTable(
                columnSpacing: 24,
                headingRowColor: WidgetStateProperty.all(Colors.grey.shade200),
                border: TableBorder.all(
                  color: Colors.grey.shade300,
                  width: 1,
                ),
                columns: const [
                  DataColumn(label: Text('Type', style: TextStyle(fontWeight: FontWeight.bold))),
                  DataColumn(label: Text('Value', style: TextStyle(fontWeight: FontWeight.bold))),
                ],
                rows: [
                  DataRow(cells: [
                    const DataCell(Text('Plain Text')),
                    DataCell(SelectableText(plainText)),
                  ]),
                  DataRow(cells: [
                    const DataCell(Text('Master Key (32 characters)')),
                    DataCell(SelectableText(masterKey)),
                  ]),
                  DataRow(cells: [
                    const DataCell(Text('Encrypted')),
                    DataCell(SelectableText(encrypted)),
                  ]),
                  DataRow(cells: [
                    const DataCell(Text('Decrypted')),
                    DataCell(SelectableText(decrypted)),
                  ]),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}