sent at run time. In particular, a
        provider for the RC4 cipher is needed. Unfortunately, the sample JCE
        provider in Sun's JDK 1.4 does <strong>not</strong> provide RC4. If you
        get a message saying
      </p>
<pre class="code">"Cannot find any provider supporting RC4"</pre>
<p>
        then you don't have the needed infrastructure.
      </p>
<p>
        There are several commercial and a few Open Source packages which
        provide RC4. A pure Java implementation is produced by <a 