integer&gt;</dt>
<dd>

<p>Can be used to get the default MAC size (which might be the only allowable MAC size for the implementation).</p>

<p>Note that some implementations allow setting the size that the resulting MAC should have as well, see the documentation of the implementation.</p>

</dd>
</dl>

<dl>

<dt id="size-OSSL_MAC_PARAM_BLOCK_SIZE-integer">&quot;size&quot; (<b>OSSL_MAC_PARAM_BLOCK_SIZE</b>) &lt;integer&gt;</dt>
<dd>

<p>Can be used to get the MAC block size (if supported by the algorithm).</