--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.xml.crypto/share/classes/com/sun/org/apache/xml/internal/security/encryption/DocumentSerializer.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,114 @@
+/*
+ * 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 com.sun.org.apache.xml.internal.security.encryption;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.StringReader;
+
+import javax.xml.XMLConstants;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.DocumentFragment;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+
+/**
+ * Converts <code>String</code>s into <code>Node</code>s and visa versa.
+ */
+public class DocumentSerializer extends AbstractSerializer {
+
+    protected DocumentBuilderFactory dbf;
+
+    /**
+     * @param source
+     * @param ctx
+     * @return the Node resulting from the parse of the source
+     * @throws XMLEncryptionException
+     */
+    public Node deserialize(byte[] source, Node ctx) throws XMLEncryptionException {
+        byte[] fragment = createContext(source, ctx);
+        return deserialize(ctx, new InputSource(new ByteArrayInputStream(fragment)));
+    }
+
+    /**
+     * @param source
+     * @param ctx
+     * @return the Node resulting from the parse of the source
+     * @throws XMLEncryptionException
+     */
+    public Node deserialize(String source, Node ctx) throws XMLEncryptionException {
+        String fragment = createContext(source, ctx);
+        return deserialize(ctx, new InputSource(new StringReader(fragment)));
+    }
+
+    /**
+     * @param ctx
+     * @param inputSource
+     * @return the Node resulting from the parse of the source
+     * @throws XMLEncryptionException
+     */
+    private Node deserialize(Node ctx, InputSource inputSource) throws XMLEncryptionException {
+        try {
+            if (dbf == null) {
+                dbf = DocumentBuilderFactory.newInstance();
+                dbf.setNamespaceAware(true);
+                dbf.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, Boolean.TRUE);
+                dbf.setAttribute("http://xml.org/sax/features/namespaces", Boolean.TRUE);
+                dbf.setValidating(false);
+            }
+            DocumentBuilder db = dbf.newDocumentBuilder();
+            Document d = db.parse(inputSource);
+
+            Document contextDocument = null;
+            if (Node.DOCUMENT_NODE == ctx.getNodeType()) {
+                contextDocument = (Document)ctx;
+            } else {
+                contextDocument = ctx.getOwnerDocument();
+            }
+
+            Element fragElt =
+                    (Element) contextDocument.importNode(d.getDocumentElement(), true);
+            DocumentFragment result = contextDocument.createDocumentFragment();
+            Node child = fragElt.getFirstChild();
+            while (child != null) {
+                fragElt.removeChild(child);
+                result.appendChild(child);
+                child = fragElt.getFirstChild();
+            }
+            return result;
+        } catch (SAXException se) {
+            throw new XMLEncryptionException("empty", se);
+        } catch (ParserConfigurationException pce) {
+            throw new XMLEncryptionException("empty", pce);
+        } catch (IOException ioe) {
+            throw new XMLEncryptionException("empty", ioe);
+        }
+    }
+
+}