olean. If set to FALSE, then <em>hmac_digest</em> and
<em>hmac_key</em> will be ignored.</td>
</tr>
<tr class="row-even"><td>hmac_digest</td>
<td>sha512</td>
<td>No</td>
<td>HMAC message digest algorithm (see <a class="reference internal" href="#digests"><span class="std std-ref">Supported HMAC authentication algorithms</span></a>).</td>
</tr>
<tr class="row-odd"><td>hmac_key</td>
<td>N/A</td>
<td>Yes, unless <em>hmac</em> is FALSE</td>
<td>HMAC key.</td>
</tr>
<tr class="row-even"><td>raw_data</td>
<td>FAL