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/*
* Copyright (c) 2000, 2001, 2002 Virtual Unlimited B.V.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*!\file dlkp.c
* \brief Discrete Logarithm keypair.
* \author Bob Deblier <bob.deblier@pandora.be>
* \ingroup DL_m
*/
#include "system.h"
#include "dlkp.h"
#include "debug.h"
int dlkp_pPair(dlkp_p* kp, randomGeneratorContext* rgc, const dldp_p* param)
{
/* copy the parameters */
if (dldp_pCopy(&kp->param, param) < 0)
return -1;
if (dldp_pPair(param, rgc, &kp->x, &kp->y) < 0)
return -1;
return 0;
}
int dlkp_pInit(dlkp_p* kp)
{
if (dldp_pInit(&kp->param) < 0)
return -1;
mpnzero(&kp->y);
mpnzero(&kp->x);
return 0;
}
int dlkp_pFree(dlkp_p* kp)
{
if (dldp_pFree(&kp->param) < 0)
return -1;
mpnfree(&kp->y);
/* wipe secret key before freeing */
mpnwipe(&kp->x);
mpnfree(&kp->x);
return 0;
}
int dlkp_pCopy(dlkp_p* dst, const dlkp_p* src)
{
if (dldp_pCopy(&dst->param, &src->param) < 0)
return -1;
mpncopy(&dst->y, &src->y);
mpncopy(&dst->x, &src->x);
return 0;
}
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