Javascript Web Push: where can I get "auth" key?
<p>I'm starting to use Web Push Notification; I don't know where I can find the <code>auth</code> key:</p>

<pre><code>var pushSubscription = {
  endpoint: '&lt; Push Subscription URL &gt;',
  keys: {
    p256dh: '&lt; User Public Encryption Key &gt;',
    auth: '&lt; ???? User Auth Secret ???? &gt;'
  }
};
</code></pre>

<p>I can get <code>endpoint</code> and <code>p256dh</code> from <code>ServiceWorker&gt;registeration.pushManager.getSubscription()</code> but not the <code>auth</code> key.</p>

<p>Thanks </p>