1 /*
2 * Copyright 2021 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.handler.ssl;
17
18 /**
19 * Convert java naming to OpenSSL naming if possible and if not return the original name.
20 */
21 final class GroupsConverter {
22
23 // See https://tools.ietf.org/search/rfc4492#appendix-A and https://www.java.com/en/configure_crypto.html
24 static String toOpenSsl(String key) {
25 switch (key) {
26 case "secp224r1":
27 return "P-224";
28 case "prime256v1":
29 case "secp256r1":
30 return "P-256";
31 case "secp384r1":
32 return "P-384";
33 case "secp521r1":
34 return "P-521";
35 case "x25519":
36 return "X25519";
37 default:
38 return key;
39 }
40 }
41
42 private GroupsConverter() { }
43 }