misc/cosmopolite
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Switch to a PRNG implementation that doesn't have a birthday problem.

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This commit is contained in:
Ian Gulliver
2015-12-30 22:01:25 -08:00
parent 8cfa55c722
commit 6ee8dc4f05
1 changed files with 4 additions and 1 deletions
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5
static/cosmopolite.js
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@@ -663,9 +663,12 @@ Cosmopolite.prototype.init_ = function() {
* @const * @const
*/ */
Cosmopolite.prototype.uuid = function() { Cosmopolite.prototype.uuid = function() {
var randomBytes = new Uint8Array(31);
window.crypto.getRandomValues(randomBytes);
var i = 0;
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
/** @type {number} */ /** @type {number} */
var r = (Math.random() * 16) | 0; var r = randomBytes[i++] % 16;
if (c == 'x') { if (c == 'x') {
return r.toString(16); return r.toString(16);
} else { } else {