ions did not have the necessary APIs.

<p>
As of <code>proftpd-1.3.5</code>, the <code>SQLPasswordPBKDF2</code> directive
can instead take a named query, for determining the digest algorithm,
iteration count, and output length <i>on a per-user basis</i>.  For example:
<pre>
  SQLNamedQuery get-user-pbkdf2 SELECT "algo, iter, len FROM user_pbkdf2 WHERE user = '%{0}'
  SQLPasswordPBKDF2 sql:/get-user-pbkdf2
</pre>

<hr>
<h3><a name="SQLPasswordRounds">SQLPasswordRounds</a></h3>
<strong>Syntax:</strong> SQLPas