flutter_elliptic_curve_keypair 0.0.1

A flutter plugin to encrypt data using elliptic curve keypair.

Flutter elliptic curve keypair

This Flutter plugin provides means to perform encrypt data using ellitic curve keypair algorthm,encapsulated with biometric crypto and get the public key to validate.

Supported Platforms

• Android
• IOS

Features

• Encrypt data using ellitic curve keypair algorthm
• Get public key to validate signed data (Can be used in server side to validate)
• Support Arabic and English (Only for android)

Usage in Dart

# add this line to your pubspec.yaml
flutter_elliptic_curve_keypair: ^0.0.1

// Import the relevant plugin:
import 'package:flutter_elliptic_curve_keypair/flutter_elliptic_curve_keypair.dart';

To encrypt data

Future<void> encryptData() async {
    try {

      String dataToSign = "data_to_sign"; // data to encript
      String language = "en"; // support english and arabic (only for android) "en" => english & "ar" => Arabic
      String alias = "your_alias_name"; // key pair alias

     EccResultModel signedData =
          await FlutterEllipticCurveKeyPair.ellipticCurveKeyPairSigning(
        message: dataToSign,
        language: language,
        alias: alias,
      );

      if (signedData.success) {
        setState(() {
          signed = "SUCCEESS, SIGNED DATA HERE => ${signedData.data}";
        });
      } else {
        setState(() {
          public = "FAILED, ERROR => ${signedData.data.toString()}";
        });
      }

    } on PlatformException catch (e) {
      print("Unexpected error occured$e");
    }
  }

To get public key

Future<void> ellipticCurveKeyPairPublicKey() async {
    try {
      EccResultModel publicKey =
          await FlutterEllipticCurveKeyPair.ellipticCurveKeyPairPublicKey();

      if (publicKey.success) {
        setState(() {
          public = "SUCCEESS, PUBLIC KEY HERE => ${publicKey.data}";
        });
      } else {
        setState(() {
          signed = "FAILED, ERROR => ${publicKey.data.toString()}";
        });
      }

    } on PlatformException catch (e) {
      print("Unexpected error occured$e");
    }
  }

Android integration

Update your MainActivity.kt

// package com.plugin.elliptic_curve_key_pair ** use your app bundle id here **
import io.flutter.embedding.android.FlutterFragmentActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugins.GeneratedPluginRegistrant


class MainActivity: FlutterFragmentActivity() {
    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
    GeneratedPluginRegistrant.registerWith(flutterEngine)
    }
}

Update app permission

<uses-permission android:name="android.permission.USE_BIOMETRIC" />

IOS integration

Update info.plist file and add permission for access biometric

<key>NSFaceIDUsageDescription</key>
<string>Would like to use Face ID for authetication</string>