DLProof.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: DLProof.h,v 1.3 2004/05/19 15:57:00 mmarsh Exp $
//
// $Log: DLProof.h,v $
// Revision 1.3  2004/05/19 15:57:00  mmarsh
// *** empty log message ***
//
// Revision 1.2  2003/11/04 22:31:51  mmarsh
// *** empty log message ***
//
//

#ifndef __CODEX_THRESHOLDCRYPTO_DLPROOF_H__
#define __CODEX_THRESHOLDCRYPTO_DLPROOF_H__

#include "CODEX_ASN1/Base.h"
#include "CODEX_ASN1/BigNumber.h"
#include "CODEX_ASN1/SecureBigNumber.h"
#include "CODEX_Ciphers/HashFunction.h"

namespace CODEX_ThresholdCrypto
{
   class DLProof : public CODEX_ASN1::Base
   {
      public :
         DLProof();

         DLProof( const BIGNUM * g1,
                  const BIGNUM * g2,
                  const BIGNUM * n,
                  const BIGNUM * max,
                  const BIGNUM * x,
                  const CODEX_Ciphers::HashFunction& H );

         DLProof( const DLProof& aOther );

         virtual ~DLProof();

         void operator=( const DLProof& aOther );

         bool verify( const BIGNUM * g1,
                      const BIGNUM * g2,
                      const BIGNUM * y1,
                      const BIGNUM * y2,
                      const BIGNUM * n,
                      const CODEX_Ciphers::HashFunction& H ) const;

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

      private :
         CODEX_ASN1::BigNumber  m_r1;
         CODEX_ASN1::BigNumber  m_r2;
         CODEX_ASN1::BigNumber  m_t;
   };

}

#endif /* __CODEX_THRESHOLDCRYPTO_DLPROOF_H__ */

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