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crypto/random: minor. comments.

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This commit is contained in:
Christopher Jeffrey 2017-07-17 22:22:52 -07:00
parent 76679a0650
commit 76eb6b354b
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2 changed files with 10 additions and 7 deletions
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10
lib/crypto/random-browser.js
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@ -14,21 +14,21 @@
const crypto = global.crypto || global.msCrypto || {}; const crypto = global.crypto || global.msCrypto || {};
/** /**
* Generate some random bytes. * Generate pseudo-random bytes.
* @param {Number} size * @param {Number} size
* @returns {Buffer} * @returns {Buffer}
*/ */
exports.randomBytes = function randomBytes(n) { exports.randomBytes = function randomBytes(size) {
let data = new Uint8Array(n); let data = new Uint8Array(size);
crypto.getRandomValues(data); crypto.getRandomValues(data);
return Buffer.from(data.buffer); return Buffer.from(data.buffer);
}; };
if (!crypto.getRandomValues) { if (!crypto.getRandomValues) {
// Out of luck here. Use bad randomness for now. // Out of luck here. Use bad randomness for now.
exports.randomBytes = function randomBytes(n) { exports.randomBytes = function randomBytes(size) {
let data = Buffer.allocUnsafe(n); let data = Buffer.allocUnsafe(size);
for (let i = 0; i < data.length; i++) for (let i = 0; i < data.length; i++)
data[i] = Math.floor(Math.random() * 256); data[i] = Math.floor(Math.random() * 256);

7
lib/crypto/random.js
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@ -12,8 +12,11 @@
const crypto = require('crypto'); const crypto = require('crypto');
/* /**
* Misc * Generate pseudo-random bytes.
* @function
* @param {Number} size
* @returns {Buffer}
*/ */
exports.randomBytes = crypto.randomBytes; exports.randomBytes = crypto.randomBytes;