ry</span></a> is added to take
its place.</p>
<p>The new library requires either the <a class="reference external" href="http://php.net/mcrypt">MCrypt extension</a> (and /dev/urandom
availability) or PHP 5.3.3 and the <a class="reference external" href="http://php.net/openssl">OpenSSL extension</a>.
While this might be rather inconvenient, it is a requirement that allows us to have properly
implemented cryptographic functions.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p c