er">&quot;pbits&quot; (<b>OSSL_PKEY_PARAM_FFC_PBITS</b>) &lt;unsigned integer&gt;</dt>
<dd>

<p>Sets the size (in bits) of the prime &#39;p&#39;.</p>

<p>For &quot;fips186_4&quot; this must be 2048. For &quot;fips186_2&quot; this must be 1024. For &quot;group&quot; this can be any one of 2048, 3072, 4096, 6144 or 8192.</p>

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

<p>An optional value to set the maximum l