1 /*

     2  * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 /**

    27  * This package contains utility classes related to the Kerberos network

    28  * authentication protocol. They do not provide much Kerberos support

    29  * themselves.<p>

    30  *

    31  * The Kerberos network authentication protocol is defined in

    32  * <a href=http://www.ietf.org/rfc/rfc4120.txt>RFC 4120</a>. The Java

    33  * platform contains support for the client side of Kerberos via the

    34  * {@link org.ietf.jgss} package. There might also be

    35  * a login module that implements

    36  * {@link javax.security.auth.spi.LoginModule LoginModule} to authenticate

    37  * Kerberos principals.<p>

    38  *

    39  * You can provide the name of your default realm and Key Distribution

    40  * Center (KDC) host for that realm using the system properties

    41  * {@code java.security.krb5.realm} and {@code java.security.krb5.kdc}.

    42  * Both properties must be set.

    43  * Alternatively, the {@code java.security.krb5.conf} system property can

    44  * be set to the location of an MIT style {@code krb5.conf} configuration

    45  * file. If none of these system properties are set, the {@code krb5.conf}

    46  * file is searched for in an implementation-specific manner. Typically,

    47  * an implementation will first look for a {@code krb5.conf} file in

    48  * {@code <java-home>/lib/security} and failing that, in an OS-specific

    49  * location.<p>

    50  *

    51  * @since JDK1.4

    52  */

    53 package javax.security.auth.kerberos;