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 * SSL/TLS protocols
20 */
21 public final class SslProtocols {
22
23 /**
24 * SSL v2 Hello
25 *
26 * @deprecated SSLv2Hello is no longer secure. Consider using {@link #TLS_v1_2} or {@link #TLS_v1_3}
27 */
28 @Deprecated
29 public static final String SSL_v2_HELLO = "SSLv2Hello";
30
31 /**
32 * SSL v2
33 *
34 * @deprecated SSLv2 is no longer secure. Consider using {@link #TLS_v1_2} or {@link #TLS_v1_3}
35 */
36 @Deprecated
37 public static final String SSL_v2 = "SSLv2";
38
39 /**
40 * SSLv3
41 *
42 * @deprecated SSLv3 is no longer secure. Consider using {@link #TLS_v1_2} or {@link #TLS_v1_3}
43 */
44 @Deprecated
45 public static final String SSL_v3 = "SSLv3";
46
47 /**
48 * TLS v1
49 *
50 * @deprecated TLSv1 is no longer secure. Consider using {@link #TLS_v1_2} or {@link #TLS_v1_3}
51 */
52 @Deprecated
53 public static final String TLS_v1 = "TLSv1";
54
55 /**
56 * TLS v1.1
57 *
58 * @deprecated TLSv1.1 is no longer secure. Consider using {@link #TLS_v1_2} or {@link #TLS_v1_3}
59 */
60 @Deprecated
61 public static final String TLS_v1_1 = "TLSv1.1";
62
63 /**
64 * TLS v1.2
65 */
66 public static final String TLS_v1_2 = "TLSv1.2";
67
68 /**
69 * TLS v1.3
70 */
71 public static final String TLS_v1_3 = "TLSv1.3";
72
73 private SslProtocols() {
74 // Prevent outside initialization
75 }
76 }
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