95 lines
2.0 KiB
C
95 lines
2.0 KiB
C
/*
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* Elliptic curves over GF(p)
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*
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* Copyright (C) 2012, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* References:
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*
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* SEC1 http://www.secg.org/index.php?action=secg,docs_secg
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* Guide to Elliptic Curve Cryptography - Hankerson, Menezes, Vanstone
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*/
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#include "polarssl/config.h"
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#if defined(POLARSSL_ECP_C)
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#include "polarssl/ecp.h"
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/*
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* Unallocate (the components of) a point
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*/
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void ecp_point_free( ecp_point *pt )
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{
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if( pt == NULL )
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return;
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pt->is_zero = 1;
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mpi_free( &( pt->X ) );
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mpi_free( &( pt->Y ) );
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}
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/*
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* Unallocate (the components of) a group
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*/
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void ecp_group_free( ecp_group *grp )
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{
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if( grp == NULL )
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return;
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mpi_free( &grp->P );
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mpi_free( &grp->B );
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ecp_point_free( &grp->G );
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mpi_free( &grp->N );
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}
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/*
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* Copy the contents of Q into P
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*/
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int ecp_copy( ecp_point *P, const ecp_point *Q )
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{
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int ret;
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P->is_zero = Q->is_zero;
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MPI_CHK( mpi_copy( &P->X, &Q->X ) );
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MPI_CHK( mpi_copy( &P->Y, &Q->Y ) );
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cleanup:
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return( ret );
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}
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#if defined(POLARSSL_SELF_TEST)
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/*
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* Checkup routine
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*/
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int ecp_self_test( int verbose )
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{
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return( verbose++ );
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}
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#endif
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#endif
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