chain-util.js

const EC = require('elliptic').ec
const SHA256 = require('crypto-js/sha256')
const { v1: uuidV1 } = require('uuid')
const ec = new EC('secp256k1')

class ChainUtil {
	static genKeyPair() {
		return ec.genKeyPair()
	}

	static id() {
		return uuidV1()
	}

	static hash(data) {
		return SHA256(JSON.stringify(data)).toString()
	}

	static verifySignature(publicKey, signature, dataHash) {
		return ec.keyFromPublic(publicKey, 'hex').verify(dataHash, signature)
	}
}

module.exports = ChainUtil