CODEX_APSS/Message.cc

/*
 * 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: Message.cc,v 1.3 2004/05/19 15:56:24 mmarsh Exp $
//
// $Log: Message.cc,v $
// Revision 1.3  2004/05/19 15:56:24  mmarsh
// Added copyright and license statements.
//
// Revision 1.2  2003/11/04 22:31:45  mmarsh
// *** empty log message ***
//
//

#include "CODEX_Exceptions/BignumExceptions.h"
#include "Message.h"

using namespace CODEX_APSS;

BIGNUM *
Message::digest( const CODEX_Ciphers::HashFunction& hf ) const
{
   unsigned char* buff = NULL;
   BIGNUM * retVal = NULL;
   CODEX_ASN1::ustring* str = NULL;

   try
   {
      int length = marshal(0);
      buff = new unsigned char[ length ];
      unsigned char* pBuff = buff;
      marshal(&pBuff);
      str = hf( CODEX_ASN1::ustring( buff, length ) );
      delete [] buff;
      buff = NULL;
      retVal = BN_new();
      if ( NULL == retVal )
      {
         throw CODEX_Exceptions::BignumNullException( __FILE__ , __LINE__ );
      }
      if ( NULL == BN_bin2bn( str->data(), str->length(), retVal ) )
      {
         throw CODEX_Exceptions::BignumBin2BNException( __FILE__ , __LINE__ );
      }
      delete str;

      return retVal;
   }
   catch ( ... )
   {
      if ( NULL != buff ) delete buff;
      if ( NULL != str ) delete str;
      if ( NULL != retVal ) BN_free( retVal );
      throw;
   }
}

template SignedInitMsg;
template SignedEstablishMsg;
template SignedEstablishedMsg;
template SignedContributeMsg;
template SignedComputeMsg;
template SignedComputedMsg;
template SignedFinishedMsg;
template SignedRecoverMsg;
template SignedRecoveredMsg;

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