/*
* GMP Engine
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/

#ifndef BOTAN_ENGINE_GMP_H__
#define BOTAN_ENGINE_GMP_H__

#include <botan/engine.h>

namespace Botan {

/**
* Engine using GNU MP
*/
class GMP_Engine : public Engine
   {
   public:
      GMP_Engine();
      ~GMP_Engine();

      std::string provider_name() const { return "gmp"; }

      PK_Ops::Key_Agreement*
         get_key_agreement_op(const Private_Key& key) const;

      PK_Ops::Signature*
         get_signature_op(const Private_Key& key) const;

      PK_Ops::Verification* get_verify_op(const Public_Key& key) const;

      PK_Ops::Encryption* get_encryption_op(const Public_Key& key) const;

      PK_Ops::Decryption* get_decryption_op(const Private_Key& key) const;

      Modular_Exponentiator* mod_exp(const BigInt&,
                                     Power_Mod::Usage_Hints) const;
   };

}

#endif