1 files changed, 68 insertions, 0 deletions
diff --git a/src/lib/hash/mdx_hash/mdx_hash.h b/src/lib/hash/mdx_hash/mdx_hash.h
new file mode 100644
index 000000000..14d3c27a0
--- /dev/null
+++ b/src/lib/hash/mdx_hash/mdx_hash.h
@@ -0,0 +1,68 @@
+/*
+* MDx Hash Function
+* (C) 1999-2008 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_MDX_BASE_H__
+#define BOTAN_MDX_BASE_H__
+
+#include <botan/hash.h>
+
+namespace Botan {
+
+/**
+* MDx Hash Function Base Class
+*/
+class BOTAN_DLL MDx_HashFunction : public HashFunction
+   {
+   public:
+      /**
+      * @param block_length is the number of bytes per block
+      * @param big_byte_endian specifies if the hash uses big-endian bytes
+      * @param big_bit_endian specifies if the hash uses big-endian bits
+      * @param counter_size specifies the size of the counter var in bytes
+      */
+      MDx_HashFunction(size_t block_length,
+                       bool big_byte_endian,
+                       bool big_bit_endian,
+                       size_t counter_size = 8);
+
+      size_t hash_block_size() const { return buffer.size(); }
+   protected:
+      void add_data(const byte input[], size_t length);
+      void final_result(byte output[]);
+
+      /**
+      * Run the hash's compression function over a set of blocks
+      * @param blocks the input
+      * @param block_n the number of blocks
+      */
+      virtual void compress_n(const byte blocks[], size_t block_n) = 0;
+
+      void clear();
+
+      /**
+      * Copy the output to the buffer
+      * @param buffer to put the output into
+      */
+      virtual void copy_out(byte buffer[]) = 0;
+
+      /**
+      * Write the count, if used, to this spot
+      * @param out where to write the counter to
+      */
+      virtual void write_count(byte out[]);
+   private:
+      secure_vector<byte> buffer;
+      u64bit count;
+      size_t position;
+
+      const bool BIG_BYTE_ENDIAN, BIG_BIT_ENDIAN;
+      const size_t COUNT_SIZE;
+   };
+
+}
+
+#endif