Flutter数据加密插件sbt_encrypt的使用

SBT Encrypt 是一个用于在 Flutter 应用中进行数据加密的插件。它使用 Argon2 和 ChaCha20 算法来确保数据的安全性。

使用

首先，你需要在 pubspec.yaml 文件中添加 sbt_encrypt 依赖：

dependencies:
  sbt_encrypt: ^1.0.0

然后，运行 flutter pub get 来安装该依赖。

接下来，你可以使用以下代码来进行数据加密和解密操作：

import 'package:sbt_encrypt/sbt_encrypt.dart';

void main() async {
  // 加密数据
  final encrypted = await SbtEncrypt.encrypt('test', 'password');
  
  // 解密数据
  final decrypted = await SbtEncrypt.decrypt(encrypted, 'password');

  print('Encrypted data: $encrypted');
  print('Decrypted data: $decrypted');
}

完整示例Demo

下面是一个完整的示例，展示了如何使用 sbt_encrypt 插件进行数据加密和解密。

import 'package:flutter/material.dart';
import 'package:sbt_encrypt/sbt_encrypt.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text("SBT Encrypt Demo"),
        ),
        body: Center(
          child: EncryptDecryptWidget(),
        ),
      ),
    );
  }
}

class EncryptDecryptWidget extends StatefulWidget {
  [@override](/user/override)
  _EncryptDecryptWidgetState createState() => _EncryptDecryptWidgetState();
}

class _EncryptDecryptWidgetState extends State<EncryptDecryptWidget> {
  String _encryptedData = '';
  String _decryptedData = '';

  Future<void> _encryptData(String plainText, String password) async {
    try {
      final encrypted = await SbtEncrypt.encrypt(plainText, password);
      setState(() {
        _encryptedData = encrypted;
      });
    } catch (e) {
      print('Encryption error: $e');
    }
  }

  Future<void> _decryptData(String encryptedText, String password) async {
    try {
      final decrypted = await SbtEncrypt.decrypt(encryptedText, password);
      setState(() {
        _decryptedData = decrypted;
      });
    } catch (e) {
      print('Decryption error: $e');
    }
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        ElevatedButton(
          onPressed: () {
            _encryptData('Hello, world!', 'myPassword');
          },
          child: Text('Encrypt Data'),
        ),
        SizedBox(height: 20),
        Text(_encryptedData),
        SizedBox(height: 20),
        ElevatedButton(
          onPressed: () {
            _decryptData(_encryptedData, 'myPassword');
          },
          child: Text('Decrypt Data'),
        ),
        SizedBox(height: 20),
        Text(_decryptedData),
      ],
    );
  }
}