junkcoinpair

A library for managing SECP256k1 keypairs for JunkCoin, written in TypeScript with transpiled JavaScript committed to git.

Installation

npm install junkcoinpair

Example

TypeScript

import { ECPairFactory, ECPairInterface } from 'junkcoinpair';
import * as crypto from 'crypto';

// Initialize with tiny-secp256k1
const tinysecp = require('tiny-secp256k1');
const ECPair = ECPairFactory(tinysecp);

// Generate random keypair
const keyPair = ECPair.makeRandom();

// Create from WIF
const fromWif = ECPair.fromWIF('your_wif_key_here');

// Create from private key
const fromPrivate = ECPair.fromPrivateKey(crypto.randomBytes(32));

// Create from public key (33 or 65 byte DER format)
const fromPublic = ECPair.fromPublicKey(keyPair.publicKey);

// Sign a message
const message = crypto.createHash('sha256').update('hello world').digest();
const signature = keyPair.sign(message);

// Verify a signature
const isValid = keyPair.verify(message, signature);

Features

• Generate random keypairs
• Import/export private keys in WIF format
• Create keypairs from private or public keys
• Sign messages and verify signatures
• Support for compressed and uncompressed public keys
• Schnorr signature support (when available)
• TypeScript support with full type definitions

API

ECPairFactory(secp256k1)

Creates an ECPair API using the provided secp256k1 implementation.

ECPair Methods

• makeRandom([options]): Generate a random keypair
• fromPrivateKey(buffer[, options]): Create a keypair from a private key
• fromPublicKey(buffer[, options]): Create a keypair from a public key
• fromWIF(string): Create a keypair from a WIF string

Instance Methods

• sign(hash): Sign a 32-byte hash
• verify(hash, signature): Verify a signature
• toWIF(): Export private key as WIF
• tweak(buffer): Derive a new keypair by tweaking the current one

Testing

npm test

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

MIT

Based on bitcoinjs/ecpair, modified for JunkCoin.