CMS_sign
CMS_ContentInfo *CMS_sign(X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs,
LCRYPTO_ALIAS(CMS_sign);
cms = CMS_sign(NULL, NULL, certs, NULL, flags);
LCRYPTO_USED(CMS_sign);
if ((ci = CMS_sign(cert, pkey, NULL, bio_mem, 0)) == NULL) {
cms = CMS_sign(NULL, NULL, other, in, cfg.flags);