--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.base/share/classes/com/sun/crypto/provider/Padding.java	Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 1997, 2007, 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.crypto.provider;
+
+import javax.crypto.ShortBufferException;
+
+/**
+ * Padding interface.
+ *
+ * This interface is implemented by general-purpose padding schemes, such as
+ * the one described in PKCS#5.
+ *
+ * @author Jan Luehe
+ * @author Gigi Ankeny
+ *
+ *
+ * @see PKCS5Padding
+ */
+
+interface Padding {
+
+    /**
+     * Adds the given number of padding bytes to the data input.
+     * The value of the padding bytes is determined
+     * by the specific padding mechanism that implements this
+     * interface.
+     *
+     * @param in the input buffer with the data to pad
+     * @param the offset in <code>in</code> where the padding bytes
+     *  are appended
+     * @param len the number of padding bytes to add
+     *
+     * @exception ShortBufferException if <code>in</code> is too small to hold
+     * the padding bytes
+     */
+    void padWithLen(byte[] in, int off, int len) throws ShortBufferException;
+
+    /**
+     * Returns the index where padding starts.
+     *
+     * <p>Given a buffer with data and their padding, this method returns the
+     * index where the padding starts.
+     *
+     * @param in the buffer with the data and their padding
+     * @param off the offset in <code>in</code> where the data starts
+     * @param len the length of the data and their padding
+     *
+     * @return the index where the padding starts, or -1 if the input is
+     * not properly padded
+     */
+    int unpad(byte[] in, int off, int len);
+
+    /**
+     * Determines how long the padding will be for a given input length.
+     *
+     * @param len the length of the data to pad
+     *
+     * @return the length of the padding
+     */
+    int padLength(int len);
+}