| /* KerberosKey.java -- kerberos key |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.security.auth.kerberos; |
| |
| import gnu.classpath.NotImplementedException; |
| |
| import java.io.Serializable; |
| |
| import javax.crypto.SecretKey; |
| import javax.security.auth.DestroyFailedException; |
| import javax.security.auth.Destroyable; |
| |
| /** |
| * This class represents a Kerberos key. See the Kerberos |
| * authentication RFC for more information: |
| * <a href="http://www.ietf.org/rfc/rfc1510.txt">RFC 1510</a>. |
| * |
| * @since 1.4 |
| */ |
| public class KerberosKey |
| implements Serializable, SecretKey, Destroyable |
| { |
| private static final long serialVersionUID = -4625402278148246993L; |
| |
| private KerberosPrincipal principal; |
| private int versionNum; |
| private KeyImpl key; |
| |
| /** |
| * Construct a new key with the indicated principal and key. |
| * @param principal the principal |
| * @param key the key's data |
| * @param type the key's type |
| * @param version the key's version number |
| */ |
| public KerberosKey(KerberosPrincipal principal, byte[] key, int type, |
| int version) |
| { |
| this.principal = principal; |
| this.versionNum = version; |
| this.key = new KeyImpl(key, type); |
| } |
| |
| /** |
| * Construct a new key with the indicated principal and a password. |
| * @param principal the principal |
| * @param passwd the password to use |
| * @param algo the algorithm; if null the "DES" algorithm is used |
| */ |
| public KerberosKey(KerberosPrincipal principal, char[] passwd, String algo) |
| // Not implemented because KeyImpl really does nothing here. |
| throws NotImplementedException |
| { |
| this.principal = principal; |
| this.versionNum = 0; // FIXME: correct? |
| this.key = new KeyImpl(passwd, algo); |
| } |
| |
| /** |
| * Return the name of the algorithm used to create this key. |
| */ |
| public final String getAlgorithm() |
| { |
| checkDestroyed(); |
| return key.algorithm; |
| } |
| |
| /** |
| * Return the format of this key. This implementation always returns "RAW". |
| */ |
| public final String getFormat() |
| { |
| checkDestroyed(); |
| // Silly, but specified. |
| return "RAW"; |
| } |
| |
| /** |
| * Return the principal associated with this key. |
| */ |
| public final KerberosPrincipal getPrincipal() |
| { |
| checkDestroyed(); |
| return principal; |
| } |
| |
| /** |
| * Return the type of this key. |
| */ |
| public final int getKeyType() |
| { |
| checkDestroyed(); |
| return key.type; |
| } |
| |
| /** |
| * Return the version number of this key. |
| */ |
| public final int getVersionNumber() |
| { |
| checkDestroyed(); |
| return versionNum; |
| } |
| |
| /** |
| * Return the encoded form of this key. |
| */ |
| public final byte[] getEncoded() |
| { |
| checkDestroyed(); |
| return (byte[]) key.key.clone(); |
| } |
| |
| /** |
| * Destroy this key. |
| */ |
| public void destroy() throws DestroyFailedException |
| { |
| if (key == null) |
| throw new DestroyFailedException("already destroyed"); |
| key = null; |
| } |
| |
| /** |
| * Return true if this key has been destroyed. After this has been |
| * called, other methods on this object will throw IllegalStateException. |
| */ |
| public boolean isDestroyed() |
| { |
| return key == null; |
| } |
| |
| private void checkDestroyed() |
| { |
| if (key == null) |
| throw new IllegalStateException("key is destroyed"); |
| } |
| |
| public String toString() |
| { |
| // FIXME: random choice here. |
| return principal + ":" + versionNum; |
| } |
| } |