001/* 002 * ==================================================================== 003 * Licensed to the Apache Software Foundation (ASF) under one 004 * or more contributor license agreements. See the NOTICE file 005 * distributed with this work for additional information 006 * regarding copyright ownership. The ASF licenses this file 007 * to you under the Apache License, Version 2.0 (the 008 * "License"); you may not use this file except in compliance 009 * with the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, 014 * software distributed under the License is distributed on an 015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 016 * KIND, either express or implied. See the License for the 017 * specific language governing permissions and limitations 018 * under the License. 019 * ==================================================================== 020 * 021 * This software consists of voluntary contributions made by many 022 * individuals on behalf of the Apache Software Foundation. For more 023 * information on the Apache Software Foundation, please see 024 * <http://www.apache.org/>. 025 * 026 */ 027 028package org.apache.http.client.config; 029 030/** 031 * Standard authentication schemes supported by HttpClient. 032 * 033 * @since 4.3 034 */ 035public final class AuthSchemes { 036 037 /** 038 * Basic authentication scheme as defined in RFC 2617 (considered inherently 039 * insecure, but most widely supported). 040 */ 041 public static final String BASIC = "Basic"; 042 043 /** 044 * Digest authentication scheme as defined in RFC 2617. 045 */ 046 public static final String DIGEST = "Digest"; 047 048 /** 049 * The NTLM authentication scheme is a proprietary Microsoft Windows 050 * authentication protocol as defined in [MS-NLMP]. 051 */ 052 public static final String NTLM = "NTLM"; 053 054 /** 055 * SPNEGO authentication scheme as defined in RFC 4559 and RFC 4178 056 * (considered to be the most secure among currently supported 057 * authentication schemes if Kerberos is selected). 058 */ 059 public static final String SPNEGO = "Negotiate"; 060 061 /** 062 * Kerberos authentication scheme as defined in RFC 4120 063 * (considered to be the most secure among currently supported 064 * authentication schemes). 065 */ 066 public static final String KERBEROS = "Kerberos"; 067 068 private AuthSchemes() { 069 } 070 071}