ModIntRange.cc Source File

00001 /*
00002  * Copyright 2003 Michael A. Marsh, Cornell University. All rights reserved.
00003  * This software is released under the modified BSD license.
00004  * See the file LICENSE in the top-level directory for details.
00005  */
00006 //
00007 // $Id: ModIntRange.cc,v 1.3 2004/05/19 15:57:01 mmarsh Exp $
00008 //
00009 // $Log: ModIntRange.cc,v $
00010 // Revision 1.3  2004/05/19 15:57:01  mmarsh
00011 // *** empty log message ***
00012 //
00013 // Revision 1.2  2003/11/04 22:23:08  mmarsh
00014 // General code cleanup.
00015 //
00016 //
00017 
00018 #include "ModIntRange.h"
00019 #include "CODEX_Exceptions/BignumExceptions.h"
00020 
00021 using namespace CODEX_VSS;
00022 
00023 ModIntRange::ModIntRange( const BIGNUM * modulus )
00024 {
00025    m_min = BN_new();
00026    if ( 0 == m_min )
00027    {
00028       throw CODEX_Exceptions::BignumNullException( __FILE__ , __LINE__ );
00029    }
00030    if ( ! BN_zero( m_min ) )
00031    {
00032       throw CODEX_Exceptions::BignumSetWordException( __FILE__ , __LINE__ );
00033    }
00034 
00035    m_max = BN_new();
00036    if ( 0 == m_max )
00037    {
00038       throw CODEX_Exceptions::BignumNullException( __FILE__ , __LINE__ );
00039    }
00040    if ( ! BN_sub( m_max, modulus, BN_value_one() ) )
00041    {
00042       throw CODEX_Exceptions::BignumSubException( __FILE__ , __LINE__ );
00043    }
00044 }
00045 
00046 ModIntRange::~ModIntRange()
00047 {
00048    if ( 0 != m_min ) BN_free( m_min );
00049    if ( 0 != m_max ) BN_free( m_max );
00050 }