cms_sd_asn1_ctrl
if (!cms_sd_asn1_ctrl(si, 1)) {
if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0)) {
if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
if (!cms_sd_asn1_ctrl(si, 1))