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.netty5.handler.ssl;
17
18 import java.util.Collections;
19 import java.util.HashMap;
20 import java.util.Map;
21
22 /**
23 * Convert java naming to OpenSSL naming if possible and if not return the original name.
24 */
25 final class GroupsConverter {
26
27 private static final Map<String, String> mappings;
28
29 static {
30 // See https://tools.ietf.org/search/rfc4492#appendix-A and https://www.java.com/en/configure_crypto.html
31 Map<String, String> map = new HashMap<>();
32 map.put("secp224r1", "P-224");
33 map.put("prime256v1", "P-256");
34 map.put("secp256r1", "P-256");
35 map.put("secp384r1", "P-384");
36 map.put("secp521r1", "P-521");
37 map.put("x25519", "X25519");
38 mappings = Collections.unmodifiableMap(map);
39 }
40
41 static String toOpenSsl(String key) {
42 String mapping = mappings.get(key);
43 if (mapping == null) {
44 return key;
45 }
46 return mapping;
47 }
48
49 private GroupsConverter() { }
50 }