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diff --git a/libjava/classpath/javax/security/cert/X509Certificate.java b/libjava/classpath/javax/security/cert/X509Certificate.java
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+/* X509Certificate.java -- base class of X.509 certificates.
+   Copyright (C) 2004 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.cert;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+
+import java.math.BigInteger;
+
+import java.security.Principal;
+import java.security.cert.CertificateFactory;
+
+import java.util.Date;
+
+/**
+ * <p>The base class of all X.509 certificates.</p>
+ *
+ * <p><b>This class is deprecated in favor of the {@link
+ * java.security.cert.X509Certificate} class. It should not be used in new
+ * applications.</b></p>
+ */
+public abstract class X509Certificate extends Certificate
+{
+
+  // Class methods.
+  // -------------------------------------------------------------------------
+
+  /**
+   * <p>Get an instance of X509Certificate for the given encoded bytes.</p>
+   *
+   * @param encoded The encoded certificate.
+   * @return An instance of X509Certificate.
+   * @throws CertificateException If the encoded certificate cannot be parsed.
+   */
+  public static X509Certificate getInstance(byte[] encoded)
+    throws CertificateException
+  {
+    return getInstance(new ByteArrayInputStream(encoded));
+  }
+
+  /**
+   * <p>Get an instance of X509Certificate for the given encoded stream.</p>
+   *
+   * @param encoded The encoded certificate stream..
+   * @return An instance of X509Certificate.
+   * @throws CertificateException If the encoded certificate cannot be parsed.
+   */
+  public static X509Certificate getInstance(InputStream encoded)
+    throws CertificateException
+  {
+    try
+      {
+        CertificateFactory cf = CertificateFactory.getInstance("X.509");
+        return new X509CertBridge((java.security.cert.X509Certificate)
+                                  cf.generateCertificate(encoded));
+      }
+    catch (java.security.cert.CertificateException ce)
+      {
+        throw new CertificateException(ce.getMessage());
+      }
+  }
+
+  // Abstract methods.
+  // -------------------------------------------------------------------------
+
+  /**
+   * <p>Check if this certificate is valid now.</p>
+   *
+   * @throws CertificateExpiredException If the certificate has expired.
+   * @throws CertificateNotYetValidException If the certificate is not yet valid.
+   * @see #checkValidity(java.util.Date)
+   */
+  public abstract void checkValidity()
+    throws CertificateExpiredException, CertificateNotYetValidException;
+
+  /**
+   * <p>Check if this certificate is valid for the given date.</p>
+   *
+   * @param date The date to check.
+   * @throws CertificateExpiredException If the certificate has expired.
+   * @throws CertificateNotYetValidException If the certificate is not yet valid.
+   */
+  public abstract void checkValidity(Date date)
+    throws CertificateExpiredException, CertificateNotYetValidException;
+
+  /**
+   * <p>Returns the X.509 version number.</p>
+   *
+   * @return The version number.
+   */
+  public abstract int getVersion();
+
+  /**
+   * <p>Returns this certificate's serial number.</p>
+   *
+   * @return The serial number.
+   */
+  public abstract BigInteger getSerialNumber();
+
+  /**
+   * <p>Returns the distinguished name of this certificate's issuer.</p>
+   *
+   * @return The issuer's distinguished name.
+   */
+  public abstract Principal getIssuerDN();
+
+  /**
+   * <p>Returns the distinguished name of this certificate's subject.</p>
+   *
+   * @return The subject's distinguished name.
+   */
+  public abstract Principal getSubjectDN();
+
+  /**
+   * <p>Returns the <i>not before</i> portion of this certificate's validity
+   * period.</p>
+   *
+   * @return The not before date.
+   */
+  public abstract Date getNotBefore();
+
+  /**
+   * <p>Returns the <i>not after</i> portion of this certificate's validity
+   * period.</p>
+   *
+   * @return The not after date.
+   */
+  public abstract Date getNotAfter();
+
+  /**
+   * <p>Returns the name of this certificate's signature algorithm.</p>
+   *
+   * @return The name of the signature algorithm.
+   */
+  public abstract String getSigAlgName();
+
+  /**
+   * <p>Returns the object identifier (OID) of this certificate's signature
+   * algorithm. The returned string is a sequence of integers separated by
+   * periods.</p>
+   *
+   * @return The signature OID.
+   */
+  public abstract String getSigAlgOID();
+
+  /**
+   * <p>Returns the signature parameters. The returned byte array contains the
+   * raw DER-encoded parameters.</p>
+   *
+   * @return The signature parameters.
+   */
+  public abstract byte[] getSigAlgParams();
+}