Add an implementation of Skein-512

1 files changed, 41 insertions, 0 deletions

diff --git a/src/hash/skein/skein_512.h b/src/hash/skein/skein_512.h
new file mode 100644
index 000000000..a585ff47f
--- /dev/null
+++ b/src/hash/skein/skein_512.h
@@ -0,0 +1,41 @@
+/**
+* The Skein-512 hash function
+* (C) 2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_SKEIN_H__
+#define BOTAN_SKEIN_H__
+
+#include <botan/secmem.h>
+#include <botan/hash.h>
+#include <string>
+
+namespace Botan {
+
+class Skein_512 : public HashFunction
+   {
+   public:
+      Skein_512(u32bit output_bits = 512);
+
+      HashFunction* clone() const { return new Skein_512(output_bits); }
+
+      std::string name() const;
+
+      void clear() throw();
+   private:
+      void add_data(const byte input[], u32bit length);
+      void final_result(byte out[]);
+
+      u32bit output_bits;
+      SecureBuffer<u64bit, 9> H;
+      SecureBuffer<u64bit, 3> T;
+
+      SecureBuffer<byte, 64> buffer;
+      u32bit buf_pos;
+   };
+
+}
+
+#endif