G_set0_extensions() sets <i>exts</i> as the extensions in the certTemplate of <i>crm</i>. Frees any pre-existing ones and consumes <i>exts</i>.</p>

<p>OSSL_CRMF_MSG_push0_extension() pushes the X509 extension <i>ext</i> to the extensions in the certTemplate of <i>crm</i>. Consumes <i>ext</i>.</p>

<p>OSSL_CRMF_MSG_create_popo() creates and sets the Proof-of-Possession (POPO) according to the method <i>meth</i> in <i>crm</i>. The library context <i>libctx</i> and property query string <i>propq</i>, may be N