1 files changed, 47 insertions, 0 deletions
diff --git a/src/lib/block/twofish/twofish.h b/src/lib/block/twofish/twofish.h
new file mode 100644
index 000000000..3d8e47498
--- /dev/null
+++ b/src/lib/block/twofish/twofish.h
@@ -0,0 +1,47 @@
+/*
+* Twofish
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_TWOFISH_H__
+#define BOTAN_TWOFISH_H__
+
+#include <botan/block_cipher.h>
+
+namespace Botan {
+
+/**
+* Twofish, an AES finalist
+*/
+class BOTAN_DLL Twofish : public Block_Cipher_Fixed_Params<16, 16, 32, 8>
+   {
+   public:
+      void encrypt_n(const byte in[], byte out[], size_t blocks) const;
+      void decrypt_n(const byte in[], byte out[], size_t blocks) const;
+
+      void clear();
+      std::string name() const { return "Twofish"; }
+      BlockCipher* clone() const { return new Twofish; }
+   private:
+      void key_schedule(const byte[], size_t);
+
+      static void rs_mul(byte[4], byte, size_t);
+
+      static const u32bit MDS0[256];
+      static const u32bit MDS1[256];
+      static const u32bit MDS2[256];
+      static const u32bit MDS3[256];
+      static const byte Q0[256];
+      static const byte Q1[256];
+      static const byte RS[32];
+      static const byte EXP_TO_POLY[255];
+      static const byte POLY_TO_EXP[255];
+
+      secure_vector<u32bit> SB, RK;
+   };
+
+}
+
+#endif