/* * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.jarsigner; import java.io.IOException;import java.security.NoSuchAlgorithmException;import java.security.cert.CertificateException; /** * This class defines a content signing service. * Implementations must be instantiable using a zero-argument constructor. * * @since 1.5 * @author Vincent Ryan */ public abstract class ContentSigner {     /**     * Generates a PKCS #7 signed data message.     * This method is used when the signature has already been generated.     * The signature, the signer's details, and optionally a signature     * timestamp and the content that was signed, are all packaged into a     * signed data message.     *     * @param parameters The non-null input parameters.     * @param omitContent true if the content should be omitted from the     *         signed data message. Otherwise the content is included.     * @param applyTimestamp true if the signature should be timestamped.     *         Otherwise timestamping is not performed.     * @return A PKCS #7 signed data message.     * @throws NoSuchAlgorithmException The exception is thrown if the signature     *         algorithm is unrecognised.     * @throws CertificateException The exception is thrown if an error occurs     *         while processing the signer's certificate or the TSA's     *         certificate.     * @throws IOException The exception is thrown if an error occurs while     *         generating the signature timestamp or while generating the signed     *         data message.     * @throws NullPointerException The exception is thrown if parameters is     *         null.     */    public abstract byte[] generateSignedData(        ContentSignerParameters parameters, boolean omitContent,        boolean applyTimestamp)            throws NoSuchAlgorithmException, CertificateException, IOException;}