1 files changed, 43 insertions, 0 deletions
diff --git a/include/cast256.h b/include/cast256.h
new file mode 100644
index 000000000..068da9ce4
--- /dev/null
+++ b/include/cast256.h
@@ -0,0 +1,43 @@
+/*************************************************
+* CAST-256 Header File                           *
+* (C) 1999-2006 The Botan Project                *
+*************************************************/
+
+#ifndef BOTAN_CAST256_H__
+#define BOTAN_CAST256_H__
+
+#include <botan/base.h>
+
+namespace Botan {
+
+/*************************************************
+* CAST-256                                       *
+*************************************************/
+class CAST_256 : public BlockCipher
+   {
+   public:
+      void clear() throw() { MK.clear(); RK.clear(); }
+      std::string name() const { return "CAST-256"; }
+      BlockCipher* clone() const { return new CAST_256; }
+      CAST_256() : BlockCipher(16, 4, 32, 4) {}
+   private:
+      void enc(const byte[], byte[]) const;
+      void dec(const byte[], byte[]) const;
+      void key(const byte[], u32bit);
+      void round1(u32bit&, u32bit, u32bit, u32bit) const;
+      void round2(u32bit&, u32bit, u32bit, u32bit) const;
+      void round3(u32bit&, u32bit, u32bit, u32bit) const;
+      static const u32bit KEY_MASK[192];
+      static const byte   KEY_ROT[32];
+      SecureBuffer<u32bit, 48> MK;
+      SecureBuffer<byte, 48> RK;
+   };
+
+extern const u32bit CAST_SBOX1[256];
+extern const u32bit CAST_SBOX2[256];
+extern const u32bit CAST_SBOX3[256];
+extern const u32bit CAST_SBOX4[256];
+
+}
+
+#endif