88 lines
2.3 KiB
JavaScript
88 lines
2.3 KiB
JavaScript
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
|
|
// This file is part of Parity.
|
|
|
|
// Parity is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// Parity is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import dictionary from './dictionary';
|
|
|
|
// Allow a web worker in the browser, with a fallback for Node.js
|
|
const hasWebWorkers = typeof Worker !== 'undefined';
|
|
const KeyWorker = hasWebWorkers ? require('worker-loader!./worker')
|
|
: require('./worker').KeyWorker;
|
|
|
|
// Local accounts should never be used outside of the browser
|
|
export let keythereum = null;
|
|
|
|
if (hasWebWorkers) {
|
|
require('keythereum/dist/keythereum');
|
|
|
|
keythereum = window.keythereum;
|
|
}
|
|
|
|
export function phraseToAddress (phrase) {
|
|
return phraseToWallet(phrase).then((wallet) => wallet.address);
|
|
}
|
|
|
|
export function phraseToWallet (phrase) {
|
|
return new Promise((resolve, reject) => {
|
|
const worker = new KeyWorker();
|
|
|
|
worker.postMessage(phrase);
|
|
worker.onmessage = ({ data }) => {
|
|
resolve(data);
|
|
};
|
|
});
|
|
}
|
|
|
|
export function randomBytes (length) {
|
|
if (keythereum) {
|
|
return keythereum.crypto.randomBytes(length);
|
|
}
|
|
|
|
const buf = Buffer.alloc(length);
|
|
|
|
for (let i = 0; i < length; i++) {
|
|
buf[i] = Math.random() * 255;
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
export function randomNumber (max) {
|
|
// Use 24 bits to avoid the integer becoming signed via bitshifts
|
|
const rand = randomBytes(3);
|
|
|
|
const integer = (rand[0] << 16) | (rand[1] << 8) | rand[2];
|
|
|
|
// floor to integer value via bitor 0
|
|
return ((integer / 0xFFFFFF) * max) | 0;
|
|
}
|
|
|
|
export function randomWord () {
|
|
// TODO mh: use better entropy
|
|
const index = randomNumber(dictionary.length);
|
|
|
|
return dictionary[index];
|
|
}
|
|
|
|
export function randomPhrase (length) {
|
|
const words = [];
|
|
|
|
while (length--) {
|
|
words.push(randomWord());
|
|
}
|
|
|
|
return words.join(' ');
|
|
}
|