Flutter通信协议框架插件noise_protocol_framework的使用

Flutter通信协议框架插件noise_protocol_framework的使用

标题

noise_protocol_framework

内容

noise_protocol_framework 是一个纯 Dart 库，提供了 Noise Protocol Framework 的易于使用的实现。Noise Protocol Framework 是一套可以用于在两个实体之间建立安全通信通道的加密协议。

该实现借鉴了 Yawning 的 Noise Protocol Framework，后者是用 Golang 编写的。

有关 Noise Protocol Framework 的更多信息，请参阅 官方规格网站。

特性

• 实现 Noise Protocol Framework。
• 支持各种握手模式和密钥对，包括自定义模式。
• 提供了一个简单的的 API 来加密和解密消息。
• 支持预共享密钥和静态密钥。

此包已尽力确保其可靠性和效率。

使用方法

要使用 noise_protocol_framework，请将其添加到您的 pubspec.yaml 文件中：

dependencies:
  noise_protocol_framework: ^1.0.1

然后，导入库：

import 'package:noise_protocol_framework/noise_protocol_framework.dart';

您可以使用该库来在两个实体之间建立安全通信通道。

有关如何使用库的更多信息，请参阅 API 文档。

贡献

欢迎贡献！请阅读 贡献指南 获取更多信息。

许可证

noise_protocol_framework 发布在 MIT License 下。更多详情请参阅 LICENSE。

示例代码

import 'dart:typed_data';
import 'package:noise_protocol_framework/extensions/ext_on_byte_list.dart';
import 'package:noise_protocol_framework/noise_protocol_framework.dart';
import 'package:elliptic/elliptic.dart';
import 'package:crypto/crypto.dart';
import 'package:pointycastle/export.dart' show GCMBlockCipher, BlockCipher;

Future<void> knpsk0(Curve curve, Uint8List psk, String name) async {
  // 初始化发起方的握手状态
  KeyPair initiatorStatic = KeyPair.generate(curve);
  NoiseProtocol initiator = NoiseProtocol.getKNPSK0Initiator(
      initiatorStatic, psk, NoiseHash(sha2256), curve);
  await initiator.initialize(
      CipherState.empty(GCMBlockCipher(BlockCipher("AES"))), name);

  // 初始化响应方的握手状态
  NoiseProtocol responder = NoiseProtocol.getKNPSK0Responder(
      bytesFromHex(curve.publicKeyToCompressedHex(
          PublicKey.fromHex(curve, initiatorStatic.publicKey.toHex()))),
      psk,
      NoiseHash(sha2256),
      curve);
  await responder.initialize(
      CipherState.empty(GCMBlockCipher(BlockCipher("AES"))), name);

  var initiatorMessage1 = await initiator.sendMessage(Uint8List(0));
  var responderMessage1 = await responder.readMessage(initiatorMessage1);
  assert(responderMessage1.isEmpty);
  var responderMessage2 = await responder.sendMessage(Uint8List(0));
  var initiatorMessage2 = await initiator.readMessage(responderMessage2);
  assert(initiatorMessage2.isEmpty);

  // 加密并发送一条消息从发起方到响应方
  final plaintext = Uint8List.fromList('Hello, responder!'.codeUnits);
  final ciphertext = await initiator.sendMessage(plaintext);

  final response = await responder.readMessage(ciphertext);
  print('Responder received message: ${String.fromCharCodes(response)}');

  // 加密并发送一条消息从响应方到发起方
  final plaintext2 = Uint8List.fromList('Hello, initiator!'.codeUnits);
  final ciphertext2 = await responder.sendMessage(plaintext2);

  final response2 = await initiator.readMessage(ciphertext2);
  print('Initiator received message: ${String.fromCharCodes(response2)}');
}

Future<void> nkpsk0(Curve curve, Uint8List psk, String name) async {
  // 初始化发起方的握手状态
  KeyPair responderStatic = KeyPair.generate(curve);
  NoiseProtocol initiator = NoiseProtocol.getNKPSK0Initiator(
      bytesFromHex(responderStatic.publicKey.toHex()),
      psk,
      NoiseHash(sha2256),
      curve);
  await initiator.initialize(
      CipherState.empty(GCMBlockCipher(BlockCipher("AES"))), name);

  // 初始化响应方的握手状态
  NoiseProtocol responder = NoiseProtocol.getNKPSK0Responder(
      responderStatic, psk, NoiseHash(sha2256), curve);
  await responder.initialize(
      CipherState.empty(GCMBlockCipher(BlockCipher("AES"))), name);

  var initiatorMessage1 = await initiator.sendMessage(Uint8List(0));
  var responderMessage1 = await responder.readMessage(initiatorMessage1);
  assert(responderMessage1.isEmpty);
  var responderMessage2 = await responder.sendMessage(Uint8List(0));
  var initiatorMessage2 = await initiator.readMessage(responderMessage2);
  assert(initiatorMessage2.isEmpty);

  // 加密并发送一条消息从发起方到响应方
  final plaintext = Uint8List.fromList('Hello, responder!'.codeUnits);
  final ciphertext = await initiator.sendMessage(plaintext);
  final response = await responder.readMessage(ciphertext);
  print('Responder received message: ${String.fromCharCodes(response)}');

  // 加密并发送一条消息从响应方到发起方
  final plaintext2 = Uint8List.fromList('Hello, initiator!'.codeUnits);
  final ciphertext2 = await responder.sendMessage(plaintext2);
  final response2 = await initiator.readMessage(ciphertext2);
  print('Initiator received message: ${String.fromCharCodes(response2)}');
}

void main() async {
  Curve curve = getP256();
  Uint8List psk = bytesFromHex(
      "688c945cc5b07669ee30be7cbf6ac66cf7b9f53e3a8a787304be1d378ede0183");

  await knpsk0(curve, psk, "Noise_KNpsk0_P256_AESGCM_SHA2256");
  await nkpsk0(curve, psk, "Noise_NKpsk0_P256_AESGCM_SHA2256");
}