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diff --git a/libjava/classpath/javax/security/auth/kerberos/KerberosKey.java b/libjava/classpath/javax/security/auth/kerberos/KerberosKey.java
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+++ b/libjava/classpath/javax/security/auth/kerberos/KerberosKey.java
@@ -0,0 +1,180 @@
+/* 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;
+  }
+}