53 lines
1.5 KiB
Dart
53 lines
1.5 KiB
Dart
// Copyright (c) 2020
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// Author: Hugo Pointcheval
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import 'dart:async';
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import 'dart:typed_data';
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import 'package:flutter/services.dart';
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/// Plugin class.
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/// Contains raw functions.
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///
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/// You can use [symmetrical_crypto] for an **AES Helper**.
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class NativeCrypto {
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static const MethodChannel _channel =
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const MethodChannel('native.crypto.helper');
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/// Generates AES key.
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///
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/// Size of **256 bits** by design.
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/// And returns `Uint8List`.
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Future<Uint8List> symKeygen() async {
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final Uint8List aesKey = await _channel.invokeMethod('symKeygen');
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return aesKey;
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}
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/// Encrypts passed data with a given AES key.
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///
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/// Generates a random **IV**. Returns a list
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/// of `Uint8List` with encrypted cipher as first
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/// and IV as second member.
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Future<List<Uint8List>> symEncrypt(
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Uint8List payloadbytes, Uint8List aesKey) async {
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final List<Uint8List> encryptedPayload =
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await _channel.invokeListMethod('symEncrypt', <String, dynamic>{
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'payload': payloadbytes,
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'aesKey': aesKey,
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});
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return encryptedPayload;
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}
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/// Decrypts a passed payload with a given AES key.
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///
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/// The payload must be a list of `Uint8List`
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/// with encrypted cipher as first and IV as second member.
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Future<Uint8List> symDecrypt(
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List<Uint8List> payloadbytes, Uint8List aesKey) async {
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final Uint8List decryptedPayload =
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await _channel.invokeMethod('symDecrypt', <String, dynamic>{
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'payload': payloadbytes,
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'aesKey': aesKey,
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});
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return decryptedPayload;
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}
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} |