--- /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/ReferenceList.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,109 @@
+/*
+ * 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.util.Iterator;
+
+/**
+ * {@code ReferenceList} is an element that contains pointers from a key
+ * value of an {@code EncryptedKey} to items encrypted by that key value
+ * ({@code EncryptedData} or {@code EncryptedKey} elements).
+ * <p>
+ * It is defined as follows:
+ * <pre>{@code
+ * <element name='ReferenceList'>
+ *     <complexType>
+ *         <choice minOccurs='1' maxOccurs='unbounded'>
+ *             <element name='DataReference' type='xenc:ReferenceType'/>
+ *             <element name='KeyReference' type='xenc:ReferenceType'/>
+ *         </choice>
+ *     </complexType>
+ * </element>
+ * }</pre>
+ *
+ * @author Axl Mattheus
+ * @see Reference
+ */
+public interface ReferenceList {
+
+    /** DATA TAG */
+    int DATA_REFERENCE = 0x00000001;
+
+    /** KEY TAG */
+    int KEY_REFERENCE  = 0x00000002;
+
+    /**
+     * Adds a reference to this reference list.
+     *
+     * @param reference the reference to add.
+     * @throws IllegalAccessException if the {@code Reference} is not an
+     *   instance of {@code DataReference} or {@code KeyReference}.
+     */
+    void add(Reference reference);
+
+    /**
+     * Removes a reference from the {@code ReferenceList}.
+     *
+     * @param reference the reference to remove.
+     */
+    void remove(Reference reference);
+
+    /**
+     * Returns the size of the {@code ReferenceList}.
+     *
+     * @return the size of the {@code ReferenceList}.
+     */
+    int size();
+
+    /**
+     * Indicates if the {@code ReferenceList} is empty.
+     *
+     * @return <b>{@code true}</b> if the {@code ReferenceList} is
+     *     empty, else <b>{@code false}</b>.
+     */
+    boolean isEmpty();
+
+    /**
+     * Returns an {@code Iterator} over all the {@code Reference}s
+     * contained in this {@code ReferenceList}.
+     *
+     * @return Iterator.
+     */
+    Iterator<Reference> getReferences();
+
+    /**
+     * {@code DataReference} factory method. Returns a
+     * {@code DataReference}.
+     * @param uri
+     * @return a {@code DataReference}.
+     */
+    Reference newDataReference(String uri);
+
+    /**
+     * {@code KeyReference} factory method. Returns a
+     * {@code KeyReference}.
+     * @param uri
+     * @return a {@code KeyReference}.
+     */
+    Reference newKeyReference(String uri);
+}