1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27
28 package org.apache.http.client.config;
29
30 import org.apache.http.annotation.Immutable;
31
32 /**
33 * Standard authentication schemes supported by HttpClient.
34 *
35 * @since 4.3
36 */
37 @Immutable
38 public final class AuthSchemes {
39
40 /**
41 * Basic authentication scheme as defined in RFC2617 (considered inherently
42 * insecure, but most widely supported)
43 */
44 public static final String BASIC = "Basic";
45
46 /**
47 * Digest authentication scheme as defined in RFC2617.
48 */
49 public static final String DIGEST = "Digest";
50
51 /**
52 * The NTLM scheme is a proprietary Microsoft Windows Authentication
53 * protocol (considered to be the most secure among currently supported
54 * authentication schemes).
55 */
56 public static final String NTLM = "NTLM";
57
58 /**
59 * SPNEGO Authentication scheme.
60 */
61 public static final String SPNEGO = "negotiate";
62
63 /**
64 * Kerberos Authentication scheme.
65 */
66 public static final String KERBEROS = "Kerberos";
67
68 private AuthSchemes() {
69 }
70
71 }