dart_tinydtls 0.2.1

Dart ffi bindings to the tinydtls library. Provides wrappers for both a DTLS client and server.

example/example.dart

// Copyright 2022 The NAMIB Project Developers. All rights reserved.
// See the README as well as the LICENSE file for more information.
//
// SPDX-License-Identifier: EPL-1.0 OR BSD-3-CLAUSE

import 'dart:convert';
import 'dart:io';
import 'dart:typed_data';

import 'package:dart_tinydtls/dart_tinydtls.dart';

EcdsaKeys _getKeys() {
  final privateKey = Uint8List.fromList(privateKeyList);
  final publicKeyX = Uint8List.fromList(publicKeyXList);
  final publicKeyY = Uint8List.fromList(publicKeyYList);

  return EcdsaKeys(
      EcdsaCurve.dtlsEcdhCurveSecp256R1, privateKey, publicKeyX, publicKeyY);
}

// Insert your test server address and port here
const address = "::1";
const port = 5684;

Future<void> main() async {
  final server = await DtlsServer.bind(InternetAddress.anyIPv6, 5684,
      keyStore: {"Client_identity": "secretPSK"}, ecdsaKeys: _getKeys());
  server.listen((event) {
    print(utf8.decode(event.datagram.data));
    event.respond(utf8.encode("Hello from world!"));
  });
  final client = await DtlsClient.bind(InternetAddress.anyIPv6, 0);

  int responses = 0;
  client.listen((event) {
    print(utf8.decode(event.data));
    if (++responses >= 2) {
      server.close();
      client.close();
    }
  });

  final pskCredentials = PskCredentials("Client_identity", "secretPSK");

  final connection = await client.connect(InternetAddress(address), port,
      pskCredentials: pskCredentials,
      ecdsaKeys: _getKeys(),
      eventListener: print);

  connection.send(utf8.encode('Hello World!'));
  sleep(Duration(seconds: 1));
  connection.send(utf8.encode('Goodbye World!'));
}

const privateKeyList = [
  0x41,
  0xC1,
  0xCB,
  0x6B,
  0x51,
  0x24,
  0x7A,
  0x14,
  0x43,
  0x21,
  0x43,
  0x5B,
  0x7A,
  0x80,
  0xE7,
  0x14,
  0x89,
  0x6A,
  0x33,
  0xBB,
  0xAD,
  0x72,
  0x94,
  0xCA,
  0x40,
  0x14,
  0x55,
  0xA1,
  0x94,
  0xA9,
  0x49,
  0xFA
];

const publicKeyXList = [
  0x36,
  0xDF,
  0xE2,
  0xC6,
  0xF9,
  0xF2,
  0xED,
  0x29,
  0xDA,
  0x0A,
  0x9A,
  0x8F,
  0x62,
  0x68,
  0x4E,
  0x91,
  0x63,
  0x75,
  0xBA,
  0x10,
  0x30,
  0x0C,
  0x28,
  0xC5,
  0xE4,
  0x7C,
  0xFB,
  0xF2,
  0x5F,
  0xA5,
  0x8F,
  0x52
];

const publicKeyYList = [
  0x71,
  0xA0,
  0xD4,
  0xFC,
  0xDE,
  0x1A,
  0xB8,
  0x78,
  0x5A,
  0x3C,
  0x78,
  0x69,
  0x35,
  0xA7,
  0xCF,
  0xAB,
  0xE9,
  0x3F,
  0x98,
  0x72,
  0x09,
  0xDA,
  0xED,
  0x0B,
  0x4F,
  0xAB,
  0xC3,
  0x6F,
  0xC7,
  0x72,
  0xF8,
  0x29
];