 to use into a file, and configure
the <code>mod_sql_passwd</code> module to use it:
<pre>
  &lt;IfModule mod_sql_passwd.c&gt;
    SQLPasswordEngine on
    SQLPasswordEncoding hex
    SQLPasswordSaltFile /path/to/salt
  &lt;/IfModule&gt;
</pre>

<p><a name="SQLPasswordSodium">
<b>Argon2, Scrypt</b><br>
When <code>mod_sql_passwd</code> is compiled/linked with the <a href="https://github.com/jedisct1/libsodium"><code>libsodium</code></a> library, then the
Argon2 and Scrypt algorithms become available for use: