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98 lines
2.3 KiB
98 lines
2.3 KiB
/*!
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* lib/bitcoin/parallel-address-derivation.js
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* Copyright © 2019 – Katana Cryptographic Ltd. All Rights Reserved.
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*/
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'use strict'
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const bitcoin = require('bitcoinjs-lib')
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const workerPool = require('workerpool')
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const errors = require('../errors')
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const activeNet = require('./network').network
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const addrHelper = require('./addresses-helper')
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/**
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* Constants duplicated from HDAccountsHelper
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*/
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const BIP44 = 0
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const BIP49 = 1
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const BIP84 = 2
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/**
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* Derives an address for an hd account
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* @param {int} chain - chain to be derived
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* must have a value on [0,1] for BIP44/BIP49/BIP84 derivation
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* @param {bip32} chainNode - Parent bip32 used for derivation
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* @param {int} index - index to be derived
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* @param {int} type - type of derivation
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* @returns {Promise - object} returns an object {address: '...', chain: <int>, index: <int>}
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*/
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async function deriveAddress(chain, chainNode, index, type) {
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// Derive M/chain/index
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const indexNode = chainNode.derive(index)
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const addr = {
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chain: chain,
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index: index
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}
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switch (type) {
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case BIP44:
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addr.address = addrHelper.p2pkhAddress(indexNode.publicKey)
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break
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case BIP49:
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addr.address = addrHelper.p2wpkhP2shAddress(indexNode.publicKey)
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break
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case BIP84:
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addr.address = addrHelper.p2wpkhAddress(indexNode.publicKey)
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break
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}
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return addr
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}
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/**
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* Derives a set of addresses for an hd account
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* @param {object} msg - parameters used for the derivation
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* @returns {Promise - object[]}
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*/
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async function deriveAddresses(msg) {
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try {
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const xpub = msg.xpub
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const chain = msg.chain
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const indices = msg.indices
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const type = msg.type
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// Parse input as an HD Node. Throws if invalid
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const node = bitcoin.bip32.fromBase58(xpub, activeNet)
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// Check and see if this is a private key
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if (!node.isNeutered())
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throw errors.xpub.PRIVKEY
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const chainNode = node.derive(chain)
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const promises = indices.map(index => {
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return deriveAddress(chain, chainNode, index, type)
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})
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const addresses = await Promise.all(promises)
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// Send response to parent process
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return {
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status: 'ok',
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addresses: addresses
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}
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} catch(e) {
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return {
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status: 'error',
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addresses: [],
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error: JSON.stringify(e)
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}
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}
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}
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workerPool.worker({
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deriveAddresses: deriveAddresses
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})
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