1 files changed, 55 insertions, 0 deletions
diff --git a/src/lib/hash/tiger/tiger.h b/src/lib/hash/tiger/tiger.h
new file mode 100644
index 000000000..70c70958b
--- /dev/null
+++ b/src/lib/hash/tiger/tiger.h
@@ -0,0 +1,55 @@
+/*
+* Tiger
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_TIGER_H__
+#define BOTAN_TIGER_H__
+
+#include <botan/mdx_hash.h>
+
+namespace Botan {
+
+/**
+* Tiger
+*/
+class BOTAN_DLL Tiger : public MDx_HashFunction
+   {
+   public:
+      std::string name() const;
+      size_t output_length() const { return hash_len; }
+
+      HashFunction* clone() const
+         {
+         return new Tiger(output_length(), passes);
+         }
+
+      void clear();
+
+      /**
+      * @param out_size specifies the output length; can be 16, 20, or 24
+      * @param passes to make in the algorithm
+      */
+      Tiger(size_t out_size = 24, size_t passes = 3);
+   private:
+      void compress_n(const byte[], size_t block);
+      void copy_out(byte[]);
+
+      static void pass(u64bit& A, u64bit& B, u64bit& C,
+                       const secure_vector<u64bit>& M,
+                       byte mul);
+
+      static const u64bit SBOX1[256];
+      static const u64bit SBOX2[256];
+      static const u64bit SBOX3[256];
+      static const u64bit SBOX4[256];
+
+      secure_vector<u64bit> X, digest;
+      const size_t hash_len, passes;
+   };
+
+}
+
+#endif