CMS_signed_get_attr_by_NID
int CMS_signed_get_attr_by_NID(const CMS_SignerInfo *si, int nid, int lastpos);
LCRYPTO_ALIAS(CMS_signed_get_attr_by_NID);
if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
LCRYPTO_USED(CMS_signed_get_attr_by_NID);