--- /dev/null	2013-06-17 12:00:06.077797872 -0400
+++ new/src/share/classes/org/jcp/xml/dsig/internal/dom/AbstractDOMSignatureMethod.java	2013-06-28 11:35:20.311106062 -0400
@@ -0,0 +1,218 @@
+/*
+ * reserved comment block
+ * DO NOT REMOVE OR ALTER!
+ */
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.jcp.xml.dsig.internal.dom;
+
+import java.security.Key;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.SignatureException;
+import java.security.spec.AlgorithmParameterSpec;
+import javax.xml.crypto.MarshalException;
+import javax.xml.crypto.dom.DOMCryptoContext;
+import javax.xml.crypto.dsig.SignatureMethod;
+import javax.xml.crypto.dsig.SignedInfo;
+import javax.xml.crypto.dsig.XMLSignature;
+import javax.xml.crypto.dsig.XMLSignatureException;
+import javax.xml.crypto.dsig.XMLSignContext;
+import javax.xml.crypto.dsig.XMLValidateContext;
+import javax.xml.crypto.dsig.spec.SignatureMethodParameterSpec;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+
+/**
+ * An abstract class representing a SignatureMethod. Subclasses implement
+ * a specific XML DSig signature algorithm.
+ */
+abstract class AbstractDOMSignatureMethod extends DOMStructure 
+    implements SignatureMethod {
+
+    // denotes the type of signature algorithm
+    enum Type { DSA, RSA, ECDSA, HMAC }
+
+    /**
+     * Verifies the passed-in signature with the specified key, using the
+     * underlying Signature or Mac algorithm.
+     *
+     * @param key the verification key
+     * @param si the SignedInfo
+     * @param sig the signature bytes to be verified
+     * @param context the XMLValidateContext
+     * @return <code>true</code> if the signature verified successfully,
+     *    <code>false</code> if not
+     * @throws NullPointerException if <code>key</code>, <code>si</code> or
+     *    <code>sig</code> are <code>null</code>
+     * @throws InvalidKeyException if the key is improperly encoded, of
+     *    the wrong type, or parameters are missing, etc
+     * @throws SignatureException if an unexpected error occurs, such
+     *    as the passed in signature is improperly encoded
+     * @throws XMLSignatureException if an unexpected error occurs
+     */
+    abstract boolean verify(Key key, SignedInfo si, byte[] sig,
+                            XMLValidateContext context)
+        throws InvalidKeyException, SignatureException, XMLSignatureException;
+
+    /**
+     * Signs the bytes with the specified key, using the underlying
+     * Signature or Mac algorithm.
+     *
+     * @param key the signing key
+     * @param si the SignedInfo
+     * @param context the XMLSignContext
+     * @return the signature
+     * @throws NullPointerException if <code>key</code> or
+     *    <code>si</code> are <code>null</code>
+     * @throws InvalidKeyException if the key is improperly encoded, of
+     *    the wrong type, or parameters are missing, etc
+     * @throws XMLSignatureException if an unexpected error occurs
+     */
+    abstract byte[] sign(Key key, SignedInfo si, XMLSignContext context)
+        throws InvalidKeyException, XMLSignatureException;
+
+    /**
+     * Returns the java.security.Signature or javax.crypto.Mac standard 
+     * algorithm name.
+     */
+    abstract String getJCAAlgorithm();
+
+    /**
+     * Returns the type of signature algorithm.
+     */
+    abstract Type getAlgorithmType();
+
+    /**
+     * This method invokes the {@link #marshalParams marshalParams}
+     * method to marshal any algorithm-specific parameters.
+     */
+    public void marshal(Node parent, String dsPrefix, DOMCryptoContext context)
+        throws MarshalException
+    {
+        Document ownerDoc = DOMUtils.getOwnerDocument(parent);
+
+        Element smElem = DOMUtils.createElement(ownerDoc, "SignatureMethod",
+                                                XMLSignature.XMLNS, dsPrefix);
+        DOMUtils.setAttribute(smElem, "Algorithm", getAlgorithm());
+
+        if (getParameterSpec() != null) {
+            marshalParams(smElem, dsPrefix);
+        }
+
+        parent.appendChild(smElem);
+    }
+
+    /**
+     * Marshals the algorithm-specific parameters to an Element and
+     * appends it to the specified parent element. By default, this method
+     * throws an exception since most SignatureMethod algorithms do not have
+     * parameters. Subclasses should override it if they have parameters.
+     *
+     * @param parent the parent element to append the parameters to
+     * @param paramsPrefix the algorithm parameters prefix to use
+     * @throws MarshalException if the parameters cannot be marshalled
+     */
+    void marshalParams(Element parent, String paramsPrefix)
+        throws MarshalException
+    {
+        throw new MarshalException("no parameters should " +
+                                   "be specified for the " + getAlgorithm() +
+                                   " SignatureMethod algorithm");
+    }
+
+    /**
+     * Unmarshals <code>SignatureMethodParameterSpec</code> from the specified
+     * <code>Element</code>. By default, this method throws an exception since
+     * most SignatureMethod algorithms do not have parameters. Subclasses should
+     * override it if they have parameters.
+     *
+     * @param paramsElem the <code>Element</code> holding the input params
+     * @return the algorithm-specific <code>SignatureMethodParameterSpec</code>
+     * @throws MarshalException if the parameters cannot be unmarshalled
+     */
+    SignatureMethodParameterSpec unmarshalParams(Element paramsElem)
+        throws MarshalException
+    {
+        throw new MarshalException("no parameters should " +
+                                   "be specified for the " + getAlgorithm() +
+                                   " SignatureMethod algorithm");
+    }
+
+    /**
+     * Checks if the specified parameters are valid for this algorithm. By
+     * default, this method throws an exception if parameters are specified
+     * since most SignatureMethod algorithms do not have parameters. Subclasses
+     * should override it if they have parameters.
+     *
+     * @param params the algorithm-specific params (may be <code>null</code>)
+     * @throws InvalidAlgorithmParameterException if the parameters are not
+     *    appropriate for this signature method
+     */
+    void checkParams(SignatureMethodParameterSpec params)
+        throws InvalidAlgorithmParameterException
+    {
+        if (params != null) {
+            throw new InvalidAlgorithmParameterException("no parameters " +
+                "should be specified for the " + getAlgorithm() +
+                " SignatureMethod algorithm");
+        }
+    }
+
+    @Override
+    public boolean equals(Object o)
+    {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof SignatureMethod)) {
+            return false;
+        }
+        SignatureMethod osm = (SignatureMethod)o;
+
+        return (getAlgorithm().equals(osm.getAlgorithm()) &&
+            paramsEqual(osm.getParameterSpec()));
+    }
+    
+    @Override
+    public int hashCode() {
+        int result = 17;
+        result = 31 * result + getAlgorithm().hashCode();
+        AlgorithmParameterSpec spec = getParameterSpec();
+        if (spec != null) {
+            result = 31 * result + spec.hashCode();
+        }
+        
+        return result;
+    }
+
+    /**
+     * Returns true if parameters are equal; false otherwise.
+     *
+     * Subclasses should override this method to compare algorithm-specific
+     * parameters.
+     */
+    boolean paramsEqual(AlgorithmParameterSpec spec)
+    {
+        return (getParameterSpec() == spec);
+    }
+}