@airsign/sdk-core

Core SDK for AirSign Protocol - Secure nearby crypto & data exchange

Overview

The AirSign SDK Core provides production-ready cryptographic functions and protocol implementation for secure peer-to-peer communication and crypto payment exchange between nearby devices.

Features

• 🔐 Production Cryptography: X25519 ECDH + XChaCha20-Poly1305 AEAD
• 🌐 Multiple Transports: WebSocket relay + WebRTC P2P
• 💰 Payment URIs: Bitcoin, Ethereum, Solana, USDC support
• 📱 Cross-Platform: Browser, Node.js, React Native ready
• 🛡️ Zero-Trust: End-to-end encryption with forward secrecy
• ⚡ High Performance: <50ms crypto operations

Installation

npm install @airsign/sdk-core

Quick Start

import { AirSignSDK } from '@airsign/sdk-core';

// Initialize SDK
const sdk = new AirSignSDK();
await sdk.init();

// Start device discovery
await sdk.startDiscovery({
  deviceName: 'My Device',
  capabilities: ['payment-uri', 'nft-transfer']
});

// Listen for discovered peers
sdk.on('peer-discovered', (peer) => {
  console.log('Found device:', peer.deviceName);
});

// Send encrypted payment request
await sdk.sendPayment(
  'ethereum:0x742d35Cc6634C0532925a3b8D2f8c8e2Bf4e7a4a?value=1000000000000000000',
  peerId
);

// Handle received payments
sdk.on('payment-received', (payment) => {
  console.log('Payment request:', payment.uri);
  // Open wallet app with payment URI
});

Testing

Test Results: 19/19 passing ✅

npm test

License

MIT License - see LICENSE for details.

Support

• 📧 Email: [email protected]
• 🐛 Issues: GitHub Issues
• 📖 Docs: Documentation

Made with Real Crypto™ - Production-ready cryptography, no simulations.