
<dt><strong><a name="sec-4.">4.</a> Security Considerations</strong><dd>
<p>
   This docuemnt raises no security issues. Discussion on the strength
   of the HMAC construction can be found in [HMAC].
<p>
<dt>References<dd>
<p>
<pre>
   [HMAC]    Krawczyk, H., Bellare, M., and R. Canetti,
             &quot;HMAC: Keyed-Hashing for Message Authentication&quot;,
             RFC 2104, February 1997.

   [MD5]     Rivest, R., &quot;The MD5 Message-Digest Algorithm&quot;,
             RFC 1321, April 1992.

   