Hello-Message Node.js SDK

The Hello-Message Node.js SDK provides a simple interface for generating and verifying "hello" authentication messages for AI-to-AI and AI-to-AI-first services. This SDK is designed to work with Ethereum-based systems using cryptographic signatures for secure authentication.

Features

• Generate Hello Messages: Easily create signed "hello" authentication messages.
• Verify Signatures: Validate the authenticity of "hello" messages with Ethereum addresses.
• Lightweight and Fast: Built with performance in mind.

Installation

Install the SDK using npm:

npm install hello-message-sdk

Usage

Generate a "Hello" Message

const { Hello } = require('hello-message-sdk');

// Initialize the Hello SDK with a private key
const privateKey = '<your_ethereum_private_key>';
const hello = new Hello(privateKey);

// Get the Ethereum address
const address = hello.getAddress();
console.log('Address:', address);

// Generate a signed "hello" message
const signature = hello.generateHelloMessage();
console.log('Signature:', signature);

Verify a "Hello" Message

const { Hello } = require('hello-message-sdk');

// Example signature and address
const signature = '<signature_from_hello_message>';
const address = '<ethereum_address>';

// Verify the signature
const isValid = Hello.verifyHelloMessage(signature, message, address);
console.log('Is valid:', isValid);

API Reference

Class: Hello

constructor(privateKey: string)

Initialize the Hello object with an Ethereum private key.

• privateKey: Ethereum private key used for signing messages.

getAddress() -> string

Get the Ethereum address corresponding to the private key.

generateHelloMessage() -> string

Generate a signed "hello" message.

verifyHelloMessage(signature: string, message: string, address: string) -> boolean

Verify the authenticity of a "hello" message signature.

• signature: The signed "hello" message.
• message: The original "hello" message with nonce.
• address: The Ethereum address expected to have signed the message.

Returns:

• true if the signature is valid.
• false otherwise.

Examples

Explore the examples folder for more scripts demonstrating the SDK's usage:

• Generate a Hello Message: examples/generateHelloMessage.js
• Verify a Hello Message: examples/verifyHelloMessage.js

Testing

Run the unit tests using Mocha:

npm test

Contributing

We welcome contributions from the community! To get started:

1. Fork the repository.
2. Create a new branch for your feature or bug fix.
3. Submit a pull request with a detailed description of your changes.

License

This project is licensed under the MIT License. See the LICENSE file for details.

Support

• Issues: Report bugs or request features.
• Discussions: Join the conversation.

Happy coding with Hello-Message Node.js SDK!