236     size_t oid_len;  in pk_write_ec_param()  local
238     if ((ret = mbedtls_oid_get_oid_by_ec_grp(grp_id, &oid, &oid_len)) != 0) {  in pk_write_ec_param()
242     MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_oid(p, start, oid, oid_len));  in pk_write_ec_param()
268     size_t oid_len = 0;  in pk_write_ec_rfc8410_der()  local
279     if ((ret = mbedtls_oid_get_oid_by_ec_grp_algid(grp_id, &oid, &oid_len)) != 0) {  in pk_write_ec_rfc8410_der()
283                          mbedtls_asn1_write_algorithm_identifier_ext(p, buf, oid, oid_len, 0, 0));  in pk_write_ec_rfc8410_der()
450     size_t len = 0, par_len = 0, oid_len = 0;  in mbedtls_pk_write_pubkey_der()  local
483             ret = mbedtls_oid_get_oid_by_ec_grp_algid(ec_grp_id, &oid, &oid_len);  in mbedtls_pk_write_pubkey_der()
495     if (oid_len == 0) {  in mbedtls_pk_write_pubkey_der()
496         ret = mbedtls_oid_get_oid_by_pk_alg(pk_type, &oid, &oid_len);  in mbedtls_pk_write_pubkey_der()
502     MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_algorithm_identifier_ext(&c, buf, oid, oid_len,  in mbedtls_pk_write_pubkey_der()