관리-도구

편집 파일: rng-browser.js

// Unique ID creation requires a high quality random # generator. In the // browser this is a little complicated due to unknown quality of Math.random() // and inconsistent support for the `crypto` API. We do the best we can via // feature-detection var rng; var crypto = global.crypto || global.msCrypto; // for IE 11 if (crypto && crypto.getRandomValues) { // WHATWG crypto RNG - http://wiki.whatwg.org/wiki/Crypto var rnds8 = new Uint8Array(16); // eslint-disable-line no-undef rng = function whatwgRNG() { crypto.getRandomValues(rnds8); return rnds8; }; } if (!rng) { // Math.random()-based (RNG) // // If all else fails, use Math.random(). It's fast, but is of unspecified // quality. var rnds = new Array(16); rng = function() { for (var i = 0, r; i < 16; i++) { if ((i & 0x03) === 0) r = Math.random() * 0x100000000; rnds[i] = r >>> ((i & 0x03) << 3) & 0xff; } return rnds; }; } module.exports = rng;