To some degree yes, for example you could use something like <a href="https:&#x2F;&#x2F;github.com&#x2F;openpgpjs&#x2F;openpgpjs" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;openpgpjs&#x2F;openpgpjs</a> to encrypt from one customer to another across even your own infrastructure, but (afaik) the browser VM is an incredibly insecure platform to run a &quot;secure&quot; application.