53 lines
1.1 KiB
JavaScript
53 lines
1.1 KiB
JavaScript
var r;
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module.exports = function rand(len) {
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if (!r) r = new Rand(null);
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return r.generate(len);
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};
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function Rand(rand) {
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this.rand = rand;
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}
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module.exports.Rand = Rand;
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Rand.prototype.generate = function generate(len) {
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return this._rand(len);
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}; // Emulate crypto API using randy
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Rand.prototype._rand = function _rand(n) {
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console.log(this);
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if (this.rand.getBytes) return this.rand.getBytes(n);
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var res = new Uint8Array(n);
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for (var i = 0; i < res.length; i++) res[i] = this.rand.getByte();
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return res;
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};
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if (typeof self === 'object') {
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Rand.prototype._rand = function _rand(n) {
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var list = [];
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for (var i = 0; i < n; i++) {
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list.push(Math.ceil(Math.random() * 255));
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}
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var arr = new Uint8Array(list);
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return arr;
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};
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} else {
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// Node.js or Web worker with no crypto support
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try {
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// var crypto = require("./crypto.js");
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var crypto = 0;
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if (typeof crypto.randomBytes !== 'function') throw new Error('Not supported');
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Rand.prototype._rand = function _rand(n) {
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// return crypto.randomBytes(n);
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return crypto;
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};
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} catch (e) {}
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} |