ossl_cms_pkey_get_ri_type
supportedRiType = ossl_cms_pkey_get_ri_type(pk);
switch (ossl_cms_pkey_get_ri_type(pk)) {
int ossl_cms_pkey_get_ri_type(EVP_PKEY *pk);
cms_pkey_ri_type = ossl_cms_pkey_get_ri_type(pk);