/* Certificate.java -- deprecated interface for modeling digital certificates   Copyright (C) 1998, 2002, 2004  Free Software Foundation, Inc.This file is part of GNU Classpath.GNU Classpath is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe 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, butWITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNUGeneral Public License for more details.You should have received a copy of the GNU General Public Licensealong with GNU Classpath; see the file COPYING.  If not, write to theFree Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA02110-1301 USA.Linking this library statically or dynamically with other modules ismaking a combined work based on this library.  Thus, the terms andconditions of the GNU General Public License cover the wholecombination.As a special exception, the copyright holders of this library give youpermission to link this library with independent modules to produce anexecutable, regardless of the license terms of these independentmodules, and to copy and distribute the resulting executable underterms of your choice, provided that you also meet, for each linkedindependent module, the terms and conditions of the license of thatmodule.  An independent module is a module which is not derived fromor based on this library.  If you modify this library, you may extendthis exception to your version of the library, but you are notobligated to do so.  If you do not wish to do so, delete thisexception statement from your version. */package java.security;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;/** * This interface models a digital certificate which verifies the * authenticity of a party.  This class simply allows certificate * information to be queried, it does not guarantee that the certificate * is valid. * * <p>This class is deprecated in favor of the new java.security.cert package. * It exists for backward compatibility only. * * @author Aaron M. Renn (arenn@urbanophile.com) * @since 1.1 * @deprecated use {@link java.security.cert} instead * @status updated to 1.4 */public interface Certificate{  /**   * This method returns the <code>Principal</code> that is guaranteeing   * this certificate.   *   * @return the <code>Principal</code> guaranteeing the certificate   */  Principal getGuarantor();  /**   * This method returns the <code>Principal</code> being guaranteed by   * this certificate.   *   * @return the <code>Principal</code> guaranteed by this certificate   */  Principal getPrincipal();  /**   * This method returns the public key for the <code>Principal</code> that   * is being guaranteed.   *   * @return the <code>PublicKey</code> of the Principal being guaranteed   */  PublicKey getPublicKey();  /**   * This method writes the certificate to an <code>OutputStream</code> in   * a format that can be understood by the <code>decode</code> method.   *   * @param out the <code>OutputStream</code> to write to   * @throws KeyException if there is a problem with the certificate   * @throws IOException if an error occurs writing to the stream   * @see #decode(InputStream)   * @see #getFormat()   */  void encode(OutputStream out) throws KeyException, IOException;  /**   * This method reads an encoded certificate from an <code>InputStream</code>.   *   * @param in the <code>InputStream</code> to read from   * @throws KeyException if there is a problem with the certificate data   * @throws IOException if an error occurs reading from the stream   * @see #encode(OutputStream)   * @see #getFormat()   */  void decode(InputStream in) throws KeyException, IOException;  /**   * This method returns the encoding format of the certificate (e.g., "PGP",   * "X.509").  This format is used by the <code>encode</code> and   * <code>decode</code> methods.   *   * @return the encoding format being used   */  String getFormat();  /**   * This method returns a <code>String</code> representation of the contents   * of this certificate.   *   * @param detail true to provided more detailed information   * @return the string representation   */  String toString(boolean detail);} // interface Certificate