encryption_decryptions

Platform Support

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Mandatory Steps for Android

Inside your android > app > src > main > AndroidManifest.xml file. Add below lines tools:replace="android:label" inside your application tag & add xmlns:tools="http://schemas.android.com/tools" to your manifest tag

If you forget to add this you will get build error for tools:replace="android:label"

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Note

Ensure that requests you are going to encrypt should not conatain any null value or resposne that you are going to decrypt should not have null values

Heighlight

Used rncryptor native dependency for fast execuation Took only 50ms to encrypt or decrypt large data

Every time you encrypt the same data you got different output so it's very hard to predict what is the information

Usage

import 'dart:convert';

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

void main() => runApp(const MyApp());

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

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final String enctyptDectyptkey = "hnbTojntU7u";
  final EncryptionDecryptions _encryptionDecryptions = EncryptionDecryptions();
  final Map<dynamic, dynamic> mockData = {
    "name": "John",
    "surname": "Doe",
    "age": 22,
    "hobies": ["Swimming", "football"]
  };
  final String mockPlain = "I am dev";

  String encryptedPlainText = "", displayPlaint = "";

  _encryptData({required String key, required String data}) async {
    return await _encryptionDecryptions.encrypt(data: data, key: key) ?? "";
  }

  _decryptData({required String key, required String data}) async {
    return await _encryptionDecryptions.decrypt(data: data, key: key) ?? "";
  }

  String encryptedJsonData = "", displayJsonData = "";

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Enctypt Decrypt',
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Secure App'),
        ),
        body: SingleChildScrollView(
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 18),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.start,
              crossAxisAlignment: CrossAxisAlignment.center,
              children: [
                Container(
                  padding: const EdgeInsets.all(8),
                  color: Colors.grey[200]!,
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.start,
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: [
                      Text(
                        encryptedJsonData,
                        style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w500),
                      ),
                      const SizedBox(height: 20),
                      const Divider(),
                      Text(
                        displayJsonData,
                        style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w600),
                      ),
                      const SizedBox(height: 10),
                      Row(
                        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                        crossAxisAlignment: CrossAxisAlignment.center,
                        children: [
                          FilledButton(
                            onPressed: () async {
                              /// Encode your data into with [jsonEncode] before encrpting it
                              encryptedJsonData = await _encryptData(key: enctyptDectyptkey, data: jsonEncode(mockData));
                              setState(() {});
                            },
                            child: const Text('Encrypt Json Data'),
                          ),
                          FilledButton(
                            onPressed: () async {
                              displayJsonData = await _decryptData(key: enctyptDectyptkey, data: encryptedJsonData);
                              setState(() {});
                            },
                            child: const Text('Decrypt Json Data'),
                          ),
                        ],
                      )
                    ],
                  ),
                ),
                const SizedBox(height: 50),
                Container(
                  padding: const EdgeInsets.all(8),
                  color: Colors.grey[200]!,
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.start,
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: [
                      Text(
                        encryptedPlainText,
                        style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w500),
                      ),
                      const SizedBox(height: 20),
                      const Divider(),
                      Text(
                        displayPlaint,
                        style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w600),
                      ),
                      const SizedBox(height: 10),
                      Row(
                        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                        crossAxisAlignment: CrossAxisAlignment.center,
                        children: [
                          FilledButton(
                            onPressed: () async {
                              /// Encypt plain text
                              encryptedPlainText = await _encryptData(key: enctyptDectyptkey, data: mockPlain);
                              setState(() {});
                            },
                            child: const Text('Encrypt Plain Text'),
                          ),
                          FilledButton(
                            onPressed: () async {
                              displayPlaint = await _decryptData(key: enctyptDectyptkey, data: encryptedPlainText);
                              setState(() {});
                            },
                            child: const Text('Decrypt Plain Text'),
                          ),
                        ],
                      )
                    ],
                  ),
                )
              ],
            ),
          ),
        ),
      ),
    );
  }
}