ECP Dart SDK

A Dart SDK for implementing the Eko Communication Protocol (ECP), an ActivityPub extension enabling secure, end-to-end encrypted messaging with the Signal protocol.

Features

• End-to-end encryption using the Signal protocol (libsignal)
• Actor discovery via WebFinger
• Encrypted messaging with key management
• Server capabilities detection and caching
• WebSocket streams for real-time messages
• Web push notifications support
• Storage abstraction for keys and messages

Getting started

Add this to your pubspec.yaml:

dependencies:
  ecp:
    git:
        url: https://github.com/eko-network/ecp-dart-sdk
        ref: main

Implement the Storage interface to provide persistent storage for keys and capabilities.

Usage

import 'package:ecp/ecp.dart';
import 'package:http/http.dart' as http;

// Initialize the client
final client = await EcpClient.build(
  storage: yourStorageImplementation,
  client: http.Client(),
  me: currentUser,
  did: userDid,
);

// Discover an actor
final person = await client.getActorWithWebfinger('user@example.com');

// Send an encrypted message
await client.sendMessage(
  person: person,
  message: yourActivity,
);

// Get messages
final messages = await client.getMessages();

// Listen to real-time messages
client.messageStreamController.stream.listen((message) {
  print('New message: $message');
});

Additional information

This package is in early development.