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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 dlpk.c
* \brief Discrete Logarithm public key.
* \author Bob Deblier <bob.deblier@pandora.be>
* \ingroup DL_m
*/
#include "system.h"
#include "dlpk.h"
#include "mp.h"
#include "debug.h"
/*!\addtogroup DL_m
* \{
*/
int dlpk_pInit(dlpk_p* pk)
{
if (dldp_pInit(&pk->param) < 0)
return -1;
mpnzero(&pk->y);
return 0;
}
int dlpk_pFree(dlpk_p* pk)
{
/*@-usereleased -compdef @*/ /* pk->param.{p,q,n}.modl is OK */
if (dldp_pFree(&pk->param) < 0)
return -1;
mpnfree(&pk->y);
return 0;
/*@=usereleased =compdef @*/
}
int dlpk_pCopy(dlpk_p* dst, const dlpk_p* src)
{
if (dldp_pCopy(&dst->param, &src->param) < 0)
return -1;
mpncopy(&dst->y, &src->y);
return 0;
}
int dlpk_pEqual(const dlpk_p* a, const dlpk_p* b)
{
return dldp_pEqual(&a->param, &b->param) &&
mpeqx(a->y.size, a->y.data, b->y.size, b->y.data);
}
int dlpk_pgoqValidate(const dlpk_p* pk, randomGeneratorContext* rgc, int cofactor)
{
register int rc = dldp_pgoqValidate(&pk->param, rgc, cofactor);
if (rc <= 0)
return rc;
if (mpleone(pk->y.size, pk->y.data))
return 0;
if (mpgex(pk->y.size, pk->y.data, pk->param.p.size, pk->param.p.modl))
return 0;
return 1;
}
int dlpk_pgonValidate(const dlpk_p* pk, randomGeneratorContext* rgc)
{
register int rc = dldp_pgonValidate(&pk->param, rgc);
if (rc <= 0)
return rc;
if (mpleone(pk->y.size, pk->y.data))
return 0;
if (mpgex(pk->y.size, pk->y.data, pk->param.p.size, pk->param.p.modl))
return 0;
return 1;
}
/*!\}
*/
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