Elliptic Key Utils

index.js

const EC = require('elliptic').ec;

const ec = new EC('secp256k1');

// private/public key pair generation
const key = ec.genKeyPair();

// to public key hex string (04...)
const hexPublicKey = key.getPublic().encode('hex');
// from hex string back to the elliptic key object (this key can verify)
const verifyKey = ec.keyFromPublic(hexPublicKey, 'hex');

// to private key hex string
const hexPrivateKey = key.getPrivate().toString(16);
// from hex string back to elliptic key object (this key can sign)
const signingKey = ec.keyFromPrivate(hexPrivateKey);