--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dcrypt/crypto/BlockCipherPadding.d	Sun Aug 10 14:20:17 2008 -0400
@@ -0,0 +1,41 @@
+/**
+ * This file is part of the dcrypt project.
+ *
+ * Copyright: Copyright (C) dcrypt contributors 2008. All rights reserved.
+ * License:   MIT
+ * Authors:   Thomas Dixon
+ */
+ 
+ module dcrypt.crypto.BlockCipherPadding;
+ 
+ public import dcrypt.crypto.errors.InvalidPaddingError;
+ 
+ /** Base padding class for implementing block padding schemes. */
+ abstract class BlockCipherPadding {
+     /** Returns: The name of the padding scheme implemented. */
+     char[] name();
+     
+     /**
+      * Pad the (last) block of plaintext to block length.
+      *
+      * Params:
+      *     input_ = Plaintext block to be padded.
+      *     inOffset = Offset at which to begin padding input_.
+      *
+      * Returns: The number of padding bytes added.
+      */ 
+     uint padBlock(void[] input_, uint inOff);
+     
+     /**
+      * Return the number of pad bytes in the block.
+      *
+      * Params:
+      *     input_ = Padded block of which to count the pad bytes.
+      *
+      * Returns: The number of pad bytes in the block.
+      *
+      * Throws: dcrypt.crypto.errors.InvalidPaddingError if 
+      *         pad length cannot be discerned.
+      */
+     uint padLength(void[] input_);
+ }