CMS_encrypt_ex
cms = CMS_encrypt_ex(NULL, in, cipher, flags, libctx, app_get0_propq());
evpcms = CMS_encrypt_ex(enc_recip, signbio, cipher, enc_flags, libctx, propq);
return CMS_encrypt_ex(certs, data, cipher, flags, NULL, NULL);
CMS_ContentInfo *CMS_encrypt_ex(STACK_OF(X509) *certs, BIO *in,