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diff --git a/libjava/javax/security/auth/x500/X500Principal.java b/libjava/javax/security/auth/x500/X500Principal.java
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+/* X500Principal.java -- X.500 principal.
+   Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.x500;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.NotActiveException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.Serializable;
+
+import java.security.Principal;
+
+import java.util.HashSet;
+import java.util.LinkedList;
+
+import gnu.java.security.x509.X500DistinguishedName;
+
+public final class X500Principal implements Principal, Serializable
+{
+
+  // Constants and fields.
+  // ------------------------------------------------------------------------
+
+  public static final String CANONICAL = "CANONICAL";
+
+  public static final String RFC1779 = "RFC1779";
+
+  public static final String RFC2253 = "RFC2253";
+
+  private transient X500DistinguishedName name;
+
+  // Constructors.
+  // ------------------------------------------------------------------------
+
+  public X500Principal(String name)
+  {
+    if (name == null)
+      throw new NullPointerException();
+    this.name = new X500DistinguishedName(name);
+  }
+
+  public X500Principal(byte[] encoded)
+  {
+    try
+      {
+        name = new X500DistinguishedName(encoded);
+      }
+    catch (IOException ioe)
+      {
+        throw new IllegalArgumentException(ioe.toString());
+      }
+  }
+
+  public X500Principal(InputStream encoded)
+  {
+    try
+      {
+        name = new X500DistinguishedName(encoded);
+      }
+    catch (IOException ioe)
+      {
+        throw new IllegalArgumentException(ioe.toString());
+      }
+  }
+
+  // Instance methods.
+  // ------------------------------------------------------------------------
+
+  public boolean equals(Object o)
+  {
+    return ((X500Principal) o).name.equals(name);
+  }
+
+  public byte[] getEncoded()
+  {
+    return name.getEncoded();
+  }
+
+  public String getName()
+  {
+    return getName(RFC2253);
+  }
+
+  public String getName(String format)
+  {
+    if (format.equalsIgnoreCase(RFC2253))
+      return name.toRFC2253();
+    else if (format.equalsIgnoreCase(RFC1779))
+      return name.toRFC1779();
+    else if (format.equalsIgnoreCase(CANONICAL))
+      return name.toCanonical();
+    throw new IllegalArgumentException("unsupported format " + format);
+  }
+
+  // Serialization methods.
+  // ------------------------------------------------------------------------
+
+  private void writeObject(ObjectOutputStream out) throws IOException
+  {
+    out.writeObject(name.getEncoded());
+  }
+
+  private void readObject(ObjectInputStream in)
+    throws IOException, NotActiveException, ClassNotFoundException
+  {
+    byte[] buf = (byte[]) in.readObject();
+    name = new X500DistinguishedName(buf);
+  }
+}