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diff --git a/libjava/classpath/javax/security/auth/x500/X500PrivateCredential.java b/libjava/classpath/javax/security/auth/x500/X500PrivateCredential.java
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+/* X500PrivateCredential.java -- certificate and private key pair.
+   Copyright (C) 2003, 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.auth.x500;
+
+import java.security.PrivateKey;
+import java.security.cert.X509Certificate;
+
+import javax.security.auth.Destroyable;
+
+/**
+ * A pairing of a {@link X509Certificate} and its corresponding {@link
+ * PrivateKey}, with an optional keystore alias.
+ */
+public final class X500PrivateCredential implements Destroyable
+{
+
+  // Fields.
+  // -------------------------------------------------------------------------
+
+  private PrivateKey key;
+  private X509Certificate certificate;
+  private String alias;
+
+  // Constructors.
+  // -------------------------------------------------------------------------
+
+  /**
+   * Creates a new private credential with no associated keystore alias.
+   *
+   * @param certificate The X.509 certificate.
+   * @param key The private key.
+   * @throws IllegalArgumentException If either parameter is null.
+   */
+  public X500PrivateCredential (X509Certificate certificate, PrivateKey key)
+  {
+    if (certificate == null || key == null)
+      throw new IllegalArgumentException();
+    this.certificate = certificate;
+    this.key = key;
+  }
+
+  /**
+   * Creates a new private credential with a keystore alias.
+   *
+   * @param certificate The X.509 certificate.
+   * @param key The private key.
+   * @param alias The keystore alias for this credential.
+   * @throws IllegalArgumentException If any parameter is null.
+   */
+  public X500PrivateCredential (X509Certificate certificate, PrivateKey key,
+                                String alias)
+  {
+    this (certificate, key);
+    if (alias == null)
+      throw new IllegalArgumentException();
+    this.alias = alias;
+  }
+
+  // Instance methods.
+  // -------------------------------------------------------------------------
+
+  /**
+   * Returns the certificate of this credential.
+   *
+   * @return The certificate of this credential.
+   */
+  public X509Certificate getCertificate()
+  {
+    return certificate;
+  }
+
+  /**
+   * Returns the private key of this credential.
+   *
+   * @return The private key of this credential.
+   */
+  public PrivateKey getPrivateKey()
+  {
+    return key;
+  }
+
+  /**
+   * Returns the keystore alias of this credential, or null if not present.
+   *
+   * @return The keystore alias, or null.
+   */
+  public String getAlias()
+  {
+    return alias;
+  }
+
+  /**
+   * Destroy the sensitive data of this credential, setting the certificate,
+   * private key, and keystore alias to null.
+   */
+  public void destroy()
+  {
+    certificate = null;
+    key = null;
+    alias = null;
+  }
+
+  /**
+   * Tells whether or not this credential has been destroyed, and that
+   * the certificate and private key fields are null.
+   *
+   * @return True if this object has been destroyed.
+   */
+  public boolean isDestroyed()
+  {
+    return certificate == null && key == null;
+  }
+}