From 94c40441afaa44429f5e72db9ad1f1b091db01cd Mon Sep 17 00:00:00 2001
From: Luke Childs <lukechilds123@gmail.com>
Date: Thu, 9 May 2019 07:15:31 +0700
Subject: [PATCH] Add p2wpkh-p2sh address format
---
bench/index.js | 40 +++++++++++++++--------------
src/index.js | 59 ++++++++++++++++++++++++++++++++++++------
src/p2pkh.js | 64 +++++++++++-----------------------------------
src/p2wpkh-p2sh.js | 24 +++++++++++++++++
4 files changed, 111 insertions(+), 76 deletions(-)
create mode 100644 src/p2wpkh-p2sh.js
diff --git a/bench/index.js b/bench/index.js
index a0999d3..4323b9f 100644
--- a/bench/index.js
+++ b/bench/index.js
@@ -1,26 +1,28 @@
const Vain = require('..');
const prettyMs = require('pretty-ms');
-const prefix = 'BTC';
-console.log();
-console.log(`Searching for the prefix "${prefix}"...`);
+['p2pkh', 'p2wpkh-p2sh'].forEach(addressFormat => {
+ const prefix = 'BTC';
+ console.log();
+ console.log(`Searching for the prefix "${prefix}" for addres format "${addressFormat}"...`);
-const vain = new Vain({prefix});
+ const vain = new Vain({prefix, addressFormat});
-vain.on('update', data => {
- const duration = prettyMs(data.duration);
- const {attempts} = data;
- const speed = `${data.addressesPerSecond} addr/s`;
- console.log(`Duration: ${duration} | Attempts: ${attempts} | Speed: ${speed}`);
-});
+ vain.on('update', data => {
+ const duration = prettyMs(data.duration);
+ const {attempts} = data;
+ const speed = `${data.addressesPerSecond} addr/s`;
+ console.log(`Duration: ${duration} | Attempts: ${attempts} | Speed: ${speed}`);
+ });
-vain.on('found', data => {
- console.log();
- console.log(`Address: ${data.address}`);
- console.log(`WIF: ${data.wif}`);
- console.log();
- console.log(`Found in ${prettyMs(data.duration)}`);
- console.log(`Speed: ${data.addressesPerSecond} addr/s`);
-});
+ vain.on('found', data => {
+ console.log();
+ console.log(`Address: ${data.address}`);
+ console.log(`WIF: ${data.wif}`);
+ console.log();
+ console.log(`Found in ${prettyMs(data.duration)}`);
+ console.log(`Speed: ${data.addressesPerSecond} addr/s`);
+ });
-vain.start();
+ vain.start();
+});
diff --git a/src/index.js b/src/index.js
index 47692ef..2fcb7f7 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,21 +1,64 @@
const Emitter = require('tiny-emitter');
const p2pkh = require('./p2pkh');
+const p2wpkhp2sh = require('./p2wpkh-p2sh');
+
+const addressFormats = new Map(Object.entries({
+ p2pkh,
+ 'p2wpkh-p2sh': p2wpkhp2sh
+}));
+
+const ONE_SECOND = 1000;
class Vain extends Emitter {
- constructor({prefix}) {
+ constructor({prefix, addressFormat = 'p2pkh'}) {
super();
- this.prefix = `1${prefix}`;
+ this.addressFormat = addressFormats.get(addressFormat);
+ this.prefix = `${this.addressFormat.prefix}${prefix}`;
}
start() {
return new Promise(resolve => {
- const miner = p2pkh(this.prefix);
- miner.on('update', data => this.emit('update', data));
- miner.on('found', data => {
- this.emit('found', data);
- resolve(data);
- });
+ const startTime = Date.now();
+
+ let found;
+ let attempts = 0;
+ let data;
+ let lastUpdate = Date.now();
+
+ while (!found) {
+ attempts++;
+
+ data = this.addressFormat.derive();
+
+ if (data.address.startsWith(this.prefix)) {
+ found = true;
+ }
+
+ const now = Date.now();
+ if ((now - lastUpdate) > ONE_SECOND) {
+ const duration = now - startTime;
+ const addressesPerSecond = Math.floor(attempts / (duration / ONE_SECOND));
+ this.emit('update', {
+ duration,
+ attempts,
+ addressesPerSecond
+ });
+ lastUpdate = now;
+ }
+ }
+
+ const endTime = Date.now();
+ const duration = endTime - startTime;
+ const addressesPerSecond = Math.floor(attempts / (duration / ONE_SECOND));
+
+ const result = {
+ duration,
+ addressesPerSecond,
+ ...this.addressFormat.format(data)
+ };
+ this.emit('found', result);
+ resolve(result);
});
}
}
diff --git a/src/p2pkh.js b/src/p2pkh.js
index 809e67b..52c88d8 100644
--- a/src/p2pkh.js
+++ b/src/p2pkh.js
@@ -1,56 +1,22 @@
-const Emitter = require('tiny-emitter');
const bitcoin = require('bitcoinjs-lib');
-const ONE_SECOND = 1000;
-
-const p2pkh = prefix => {
- const emitter = new Emitter();
-
- process.nextTick(() => {
- const startTime = Date.now();
-
- let found;
- let attempts = 0;
- let keyPair;
- let address;
- let lastUpdate = Date.now();
-
- while (!found) {
- attempts++;
- keyPair = bitcoin.ECPair.makeRandom();
- ({address} = bitcoin.payments.p2pkh({pubkey: keyPair.publicKey}));
-
- if (address.startsWith(prefix)) {
- found = true;
- }
-
- const now = Date.now();
- if ((now - lastUpdate) > ONE_SECOND) {
- const duration = now - startTime;
- const addressesPerSecond = Math.floor(attempts / (duration / ONE_SECOND));
- emitter.emit('update', {
- duration,
- attempts,
- addressesPerSecond
- });
- lastUpdate = now;
- }
- }
-
- const endTime = Date.now();
- const duration = endTime - startTime;
- const addressesPerSecond = Math.floor(attempts / (duration / ONE_SECOND));
+const p2pkh = {
+ prefix: '1'
+};
- emitter.emit('found', {
- duration,
- attempts,
- addressesPerSecond,
- address,
- wif: keyPair.toWIF()
- });
- });
+p2pkh.derive = () => {
+ const keyPair = bitcoin.ECPair.makeRandom();
+ const {address} = bitcoin.payments.p2pkh({pubkey: keyPair.publicKey});
- return emitter;
+ return {
+ address,
+ keyPair
+ };
};
+p2pkh.format = ({address, keyPair}) => ({
+ address,
+ wif: keyPair.toWIF()
+});
+
module.exports = p2pkh;
diff --git a/src/p2wpkh-p2sh.js b/src/p2wpkh-p2sh.js
new file mode 100644
index 0000000..12658ef
--- /dev/null
+++ b/src/p2wpkh-p2sh.js
@@ -0,0 +1,24 @@
+const bitcoin = require('bitcoinjs-lib');
+
+const p2wpkhp2sh = {
+ prefix: '3'
+};
+
+p2wpkhp2sh.derive = () => {
+ const keyPair = bitcoin.ECPair.makeRandom();
+ const {address} = bitcoin.payments.p2sh({
+ redeem: bitcoin.payments.p2wpkh({pubkey: keyPair.publicKey})
+ });
+
+ return {
+ address,
+ keyPair
+ };
+};
+
+p2wpkhp2sh.format = ({address, keyPair}) => ({
+ address,
+ wif: keyPair.toWIF()
+});
+
+module.exports = p2wpkhp2sh;