  The
function <code>ENCODE()</code> is determined by
<a href="#SQLPasswordEncoding"><code>SQLPasswordEncoding</code></a>, and
the function <code>HASH()</code> by <code>SQLAuthTypes</code>.

<p>
Thus if we use a configuration like:
<pre>
  SQLAuthTypes MD5
  SQLPasswordEncoding hex
</pre>
Then <code>mod_sql_passwd</code> performs the following processing:
<pre>
  hex(MD5(<i>data</i>))
</pre>
in order to calculate the value that it will compare against the password
value stored for the authenticating client.