| // Copyright 2015 The Vanadium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| /** |
| * @fileoverview Helper functions to get random values. |
| * @private |
| */ |
| |
| // This will use window.crypto in browser, and node's crypto library in node. |
| var randomBytes = require('randombytes'); |
| |
| module.exports = { |
| int32: int32, |
| hex: hex |
| }; |
| |
| function int32() { |
| return randomBytes(4).readInt32BE(0); |
| } |
| |
| function hex(len) { |
| len = len || 16; |
| return randomBytes(Math.ceil(len/2)).toString('hex').substr(0, len); |
| } |
