148 lines
3.2 KiB
JavaScript
148 lines
3.2 KiB
JavaScript
/* eslint-env browser */
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/* global Vue:false */
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/**
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* Check if a string is valid hexadecimal
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* @param hex
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* @returns {boolean}
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*/
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const isValidHex = hex => hex.length ? /^[0-9A-F]+$/g.test(hex.toUpperCase()) : true;
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const computeDifficulty = (pattern, isChecksum) => {
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const ret = Math.pow(16, pattern.length);
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return isChecksum ? (ret * Math.pow(2, pattern.replace(/[^a-f]/gi, '').length)) : ret;
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};
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const computeProbability = (difficulty, attempts) => {
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return 1 - Math.pow((difficulty - 1) / difficulty, attempts);
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};
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// eslint-disable-next-line no-new
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new Vue({
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el: '#app',
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data: {
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count: 0,
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firstTick: null,
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running: false,
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step: 500,
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speed: '0 addr/s',
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status: 'Waiting',
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workers: [],
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threads: 4,
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result: {
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address: '',
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privateKey: ''
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},
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input: {
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prefix: '',
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checksum: true
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}
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},
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computed: {
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inputError() {
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return !isValidHex(this.input.prefix);
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},
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difficulty() {
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return this.inputError ? 'N/A' : computeDifficulty(this.input.prefix, this.input.checksum);
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},
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probability() {
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return Math.round(10000 * computeProbability(this.difficulty, this.count)) / 100;
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}
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},
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watch: {
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threads() {
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if (!this.running) {
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this.initWorkers();
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}
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}
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},
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methods: {
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incrementCounter(incr) {
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this.count += incr;
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this.speed = incr > 0 ? Math.floor(1000 * this.count / (performance.now() - this.firstTick)) + ' addr/s' : '0 addr/s';
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},
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displayResult(result) {
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this.incrementCounter(result.attempts);
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this.result.address = result.address;
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this.result.privateKey = result.privKey;
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this.status = 'Address found';
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},
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clearResult() {
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this.result.address = '';
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this.result.privateKey = '';
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},
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/**
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* Create missing workers, remove the unwanted ones.
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*/
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initWorkers() {
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const self = this;
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if (this.workers.length === this.threads) {
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return;
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}
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// Remove unwanted workers
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if (this.workers.length > this.threads) {
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for (let w = this.threads - 1; w < this.workers.length; w++) {
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this.workers[w].terminate();
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}
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this.workers = this.workers.slice(0, this.threads);
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return;
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}
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// Create workers
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for (let w = this.workers.length; w < this.threads; w++) {
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this.workers[w] = new Worker('js/bundle.js');
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this.workers[w].onmessage = function (event) {
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self.parseWorkerMessage(event.data, w);
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};
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}
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},
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parseWorkerMessage(add, w) {
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if (add !== null) {
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this.stopGen();
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return this.displayResult(add);
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}
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this.incrementCounter(this.step);
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this.workers[w].postMessage({input: this.input, step: this.step});
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},
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startGen() {
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if (!window.Worker) {
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console.error('Web workers are not supported');
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return;
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}
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this.incrementCounter(-this.count);
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this.clearResult();
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this.running = true;
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for (let w = 0; w < this.workers.length; w++) {
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this.workers[w].postMessage({input: this.input, step: this.step});
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}
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this.status = 'Running';
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this.firstTick = performance.now();
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},
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stopGen() {
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this.running = false;
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this.status = 'Stopped';
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for (let i = 0; i < this.workers.length; i++) {
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this.workers[i].terminate();
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}
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this.workers = [];
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this.initWorkers();
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}
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},
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created() {
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this.initWorkers();
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}
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});
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