lazyxchacha 1.1.0

Lazy XChaCha20-Poly1305 in Flutter base on cryptography

example/main.dart

import 'package:convert/convert.dart';
import 'package:flutter/foundation.dart';
import 'package:lazyxchacha/keypair.dart';
import 'package:lazyxchacha/lazyxchacha.dart';

void main() async {
  final lazyxchacha = LazyXChaCha.instance;

  // Generate KeyPair
  final clientKeyPair = await KeyPair.newKeyPair();
  final serverKeyPair = await KeyPair.newKeyPair();

  // Key Exchange
  final clientSharedKey = await clientKeyPair.sharedKey(serverKeyPair.pk);
  final serverSharedKey = await serverKeyPair.sharedKey(clientKeyPair.pk);

  // Payload
  const message = 'Hello lazyxchacha';

  // Encrypt with client
  final ciphertext = await lazyxchacha.encrypt(message, clientSharedKey);

  // Decrypt with server
  final plaintext = await lazyxchacha.decrypt(ciphertext, serverSharedKey);

  // Output
  debugPrint('Output: $plaintext');

  // Raw bytes in / bytes out
  final rawKey = hex.decode(clientSharedKey);
  final rawPlaintext = Uint8List.fromList([0, 1, 2, 253, 254, 255]);

  final rawCiphertext = await lazyxchacha.encryptRaw(rawPlaintext, rawKey);
  final rawDecrypted = await lazyxchacha.decryptRaw(rawCiphertext, rawKey);

  // Output
  debugPrint('Raw output: $rawDecrypted');
}