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diff --git a/javax/security/auth/kerberos/DelegationPermission.java b/javax/security/auth/kerberos/DelegationPermission.java
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+++ b/javax/security/auth/kerberos/DelegationPermission.java
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+/* DelegationPermission.java -- kerberos delegation permission
+   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 java.security.BasicPermission;
+import java.security.Permission;
+import java.security.PermissionCollection;
+import java.util.Enumeration;
+import java.util.Vector;
+
+/**
+ * @since 1.4
+ */
+public final class DelegationPermission
+    extends BasicPermission
+{
+  // FIXME: Enable this when serialization works.
+  // private static final long serialVersionUID = 883133252142523922L;
+
+  /**
+   * Create a new instance with the given name.
+   */
+  public DelegationPermission(String name)
+  {
+    super(name);
+    checkSyntax(name);
+  }
+
+  /**
+   * Create a new instance with the given name and actions.
+   * 
+   * The name consists of two parts: first the subordinate
+   * service principal, then the target service principal.
+   * Each principal is surrounded by quotes; the two are separated
+   * by a space.
+   * 
+   * @param name the name
+   * @param actions the actions; this is ignored
+   */
+  public DelegationPermission(String name, String actions)
+  {
+    super(name, actions);
+    checkSyntax(name);
+  }
+
+  private static void checkSyntax(String name)
+  {
+    int index = name.indexOf('"', 1);
+    int len = name.length();
+    if (name.charAt(0) != '"' || name.charAt(len - 1) != '"'
+        || index == -1 || index + 3 >= len
+        || name.charAt(index + 1) != ' '
+        || name.charAt(index + 2) != '"')
+      // FIXME: better message here.
+      throw new IllegalArgumentException("invalid syntax for principals");
+  }
+
+  public boolean implies(Permission perm)
+  {
+    return equals(perm);
+  }
+
+  public PermissionCollection newPermissionCollection()
+  {
+    // FIXME: don't know how to serialize here.  I suspect this
+    // class has to have a particular name, etc ...
+    return new PermissionCollection()
+    {
+      private Vector permissions = new Vector();
+
+      public void add(Permission perm)
+      {
+        if (isReadOnly())
+          throw new SecurityException("readonly");
+        if (! (perm instanceof DelegationPermission))
+          throw new IllegalArgumentException("can only add DelegationPermissions");
+        permissions.add(perm);
+      }
+
+      public boolean implies(Permission perm)
+      {
+        if (! (perm instanceof DelegationPermission))
+          return false;
+        Enumeration e = elements();
+        while (e.hasMoreElements())
+          {
+            DelegationPermission dp = (DelegationPermission) e.nextElement();
+            if (dp.implies(perm))
+              return true;
+          }
+        return false;
+      }
+
+      public Enumeration elements()
+      {
+        return permissions.elements();
+      }
+    };
+  }
+}