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ModExpFunctional.h

/*
 * Copyright 2003 Michael A. Marsh, Cornell University. All rights reserved.
 * This software is released under the modified BSD license.
 * See the file LICENSE in the top-level directory for details.
 */
//
// $Id: ModExpFunctional.h,v 1.3 2004/05/19 15:57:00 mmarsh Exp $
//
// $Log: ModExpFunctional.h,v $
// Revision 1.3  2004/05/19 15:57:00  mmarsh
// *** empty log message ***
//
// Revision 1.2  2003/11/04 22:31:52  mmarsh
// *** empty log message ***
//
//

#ifndef __CODEX_VSS_MODEXPFUNCTIONAL_H__
#define __CODEX_VSS_MODEXPFUNCTIONAL_H__

#include "ShareFunctional.h"
#include "CODEX_ASN1/Base.h"

namespace CODEX_VSS
{
   class ModExpFunctionalArgs : public CODEX_ASN1::Base
   {
      public :
         ModExpFunctionalArgs();

         ModExpFunctionalArgs( const CODEX_ASN1::BigNumber& base,
                               const CODEX_ASN1::BigNumber& modulus );

         ModExpFunctionalArgs( const ModExpFunctionalArgs& aOther );

         virtual ~ModExpFunctionalArgs();

         void operator=( const ModExpFunctionalArgs& aOther );

         const CODEX_ASN1::BigNumber& base() const { return m_base; }

         const CODEX_ASN1::BigNumber& modulus() const { return m_modulus; }

         int marshal( unsigned char ** pp ) const;
         void* unmarshal( void* bogus, unsigned char** pp, long length );

      private :
         CODEX_ASN1::BigNumber  m_base;
         CODEX_ASN1::BigNumber  m_modulus;
   };

   class ModExpFunctional : public ShareFunctional
   {
      public :
         typedef CODEX_ASN1::BigNumber  ArgType;

         typedef ModExpFunctionalArgs   CtorArgs;

         ModExpFunctional( const ArgType& base, const ArgType& modulus );

         ModExpFunctional( const CtorArgs& args );

         virtual ~ModExpFunctional();

         void operator()( const CODEX_ASN1::SecureBigNumber& operand,
                          CODEX_ASN1::BigNumber& result ) const;

         const ArgType& base() const { return m_base; }

         const ArgType& modulus() const { return m_modulus; }

      private :
         ArgType  m_base;
         ArgType  m_modulus;
   };

}

#endif /* __CODEX_VSS_MODEXPFUNCTIONAL_H__ */

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