/*

* GOST 34.11

* (C) 2009 Jack Lloyd

*

* Botan is released under the Simplified BSD License (see license.txt)

*/

#ifndef BOTAN_GOST_3411_H_

#define BOTAN_GOST_3411_H_

#include <botan/hash.h>

#include <botan/gost_28147.h>

BOTAN_FUTURE_INTERNAL_HEADER(gost_3411.h)

namespace Botan {

/**

* GOST 34.11

*/

class BOTAN_PUBLIC_API(2,0) GOST_34_11 final : public HashFunction

   {

   public:

      std::string name() const override { return "GOST-R-34.11-94" ; }

      size_t output_length() const override { return 32; }

      size_t hash_block_size() const override { return 32; }

      HashFunction* clone() const override { return new GOST_34_11; }

      std::unique_ptr<HashFunction> copy_state() const override;

      void clear() override;

      GOST_34_11();

   private:

      void compress_n(const uint8_t input[], size_t blocks);

      void add_data(const uint8_t[], size_t) override;

      void final_result(uint8_t[]) override;

      GOST_28147_89 m_cipher;

      secure_vector<uint8_t> m_buffer, m_sum, m_hash;

      size_t m_position;

      uint64_t m_count;

   };

}

#endif