/* * Copyright (c) 2005, 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. *//* * $Id: DigestMethod.java,v 1.6 2005/05/10 16:03:46 mullan Exp $ */package javax.xml.crypto.dsig; import javax.xml.crypto.AlgorithmMethod;import javax.xml.crypto.XMLStructure;import javax.xml.crypto.dsig.spec.DigestMethodParameterSpec;import java.security.spec.AlgorithmParameterSpec; /** * A representation of the XML <code>DigestMethod</code> element as * defined in the <a href="http://www.w3.org/TR/xmldsig-core/"> * W3C Recommendation for XML-Signature Syntax and Processing</a>. * The XML Schema Definition is defined as: * <p> * <pre> *   &lt;element name="DigestMethod" type="ds:DigestMethodType"/&gt; *     &lt;complexType name="DigestMethodType" mixed="true"&gt; *       &lt;sequence&gt; *         &lt;any namespace="##any" minOccurs="0" maxOccurs="unbounded"/&gt; *           &lt;!-- (0,unbounded) elements from (1,1) namespace --&gt; *       &lt;/sequence&gt; *       &lt;attribute name="Algorithm" type="anyURI" use="required"/&gt; *     &lt;/complexType&gt; * </pre> * * A <code>DigestMethod</code> instance may be created by invoking the * {@link XMLSignatureFactory#newDigestMethod newDigestMethod} method * of the {@link XMLSignatureFactory} class. * * @author Sean Mullan * @author JSR 105 Expert Group * @since 1.6 * @see XMLSignatureFactory#newDigestMethod(String, DigestMethodParameterSpec) */public interface DigestMethod extends XMLStructure, AlgorithmMethod {     /**     * The <a href="http://www.w3.org/2000/09/xmldsig#sha1">     * SHA1</a> digest method algorithm URI.     */    static final String SHA1 = "http://www.w3.org/2000/09/xmldsig#sha1";     /**     * The <a href="http://www.w3.org/2001/04/xmlenc#sha256">     * SHA256</a> digest method algorithm URI.     */    static final String SHA256 = "http://www.w3.org/2001/04/xmlenc#sha256";     /**     * The <a href="http://www.w3.org/2001/04/xmlenc#sha512">     * SHA512</a> digest method algorithm URI.     */    static final String SHA512 = "http://www.w3.org/2001/04/xmlenc#sha512";     /**     * The <a href="http://www.w3.org/2001/04/xmlenc#ripemd160">     * RIPEMD-160</a> digest method algorithm URI.     */    static final String RIPEMD160 = "http://www.w3.org/2001/04/xmlenc#ripemd160";     /**     * Returns the algorithm-specific input parameters associated with this     * <code>DigestMethod</code>.     *     * <p>The returned parameters can be typecast to a {@link     * DigestMethodParameterSpec} object.     *     * @return the algorithm-specific parameters (may be <code>null</code> if     *    not specified)     */    AlgorithmParameterSpec getParameterSpec();}