/*
* Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* *********************************************************************
*
* The Original Code is the elliptic curve math library.
*
* The Initial Developer of the Original Code is
* Sun Microsystems, Inc.
* Portions created by the Initial Developer are Copyright (C) 2003
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Douglas Stebila <douglas@stebila.ca>, Sun Microsystems Laboratories
*
*********************************************************************** */
#include "ecl.h"
#include "ecl-curve.h"
#include "ecl-priv.h"
#ifndef _KERNEL
#include <stdlib.h>
#include <string.h>
#endif
#define CHECK(func) if ((func) == NULL) { res = 0; goto CLEANUP; }
/* Duplicates an ECCurveParams */
ECCurveParams *
ECCurveParams_dup(const ECCurveParams * params, int kmflag)
{
int res = 1;
ECCurveParams *ret = NULL;
#ifdef _KERNEL
ret = (ECCurveParams *) kmem_zalloc(sizeof(ECCurveParams), kmflag);
#else
CHECK(ret = (ECCurveParams *) calloc(1, sizeof(ECCurveParams)));
#endif
if (params->text != NULL) {
#ifdef _KERNEL
ret->text = kmem_alloc(strlen(params->text) + 1, kmflag);
bcopy(params->text, ret->text, strlen(params->text) + 1);
#else
CHECK(ret->text = strdup(params->text));
#endif
}
ret->field = params->field;
ret->size = params->size;
if (params->irr != NULL) {
#ifdef _KERNEL
ret->irr = kmem_alloc(strlen(params->irr) + 1, kmflag);
bcopy(params->irr, ret->irr, strlen(params->irr) + 1);
#else
CHECK(ret->irr = strdup(params->irr));
#endif
}
if (params->curvea != NULL) {
#ifdef _KERNEL
ret->curvea = kmem_alloc(strlen(params->curvea) + 1, kmflag);
bcopy(params->curvea, ret->curvea, strlen(params->curvea) + 1);
#else
CHECK(ret->curvea = strdup(params->curvea));
#endif
}
if (params->curveb != NULL) {
#ifdef _KERNEL
ret->curveb = kmem_alloc(strlen(params->curveb) + 1, kmflag);
bcopy(params->curveb, ret->curveb, strlen(params->curveb) + 1);
#else
CHECK(ret->curveb = strdup(params->curveb));
#endif
}
if (params->genx != NULL) {
#ifdef _KERNEL
ret->genx = kmem_alloc(strlen(params->genx) + 1, kmflag);
bcopy(params->genx, ret->genx, strlen(params->genx) + 1);
#else
CHECK(ret->genx = strdup(params->genx));
#endif
}
if (params->geny != NULL) {
#ifdef _KERNEL
ret->geny = kmem_alloc(strlen(params->geny) + 1, kmflag);
bcopy(params->geny, ret->geny, strlen(params->geny) + 1);
#else
CHECK(ret->geny = strdup(params->geny));
#endif
}
if (params->order != NULL) {
#ifdef _KERNEL
ret->order = kmem_alloc(strlen(params->order) + 1, kmflag);
bcopy(params->order, ret->order, strlen(params->order) + 1);
#else
CHECK(ret->order = strdup(params->order));
#endif
}
ret->cofactor = params->cofactor;
CLEANUP:
if (res != 1) {
EC_FreeCurveParams(ret);
return NULL;
}
return ret;
}
#undef CHECK
/* Construct ECCurveParams from an ECCurveName */
ECCurveParams *
EC_GetNamedCurveParams(const ECCurveName name, int kmflag)
{
if ((name <= ECCurve_noName) || (ECCurve_pastLastCurve <= name) ||
(ecCurve_map[name] == NULL)) {
return NULL;
} else {
return ECCurveParams_dup(ecCurve_map[name], kmflag);
}
}
/* Free the memory allocated (if any) to an ECCurveParams object. */
void
EC_FreeCurveParams(ECCurveParams * params)
{
if (params == NULL)
return;
if (params->text != NULL)
#ifdef _KERNEL
kmem_free(params->text, strlen(params->text) + 1);
#else
free(params->text);
#endif
if (params->irr != NULL)
#ifdef _KERNEL
kmem_free(params->irr, strlen(params->irr) + 1);
#else
free(params->irr);
#endif
if (params->curvea != NULL)
#ifdef _KERNEL
kmem_free(params->curvea, strlen(params->curvea) + 1);
#else
free(params->curvea);
#endif
if (params->curveb != NULL)
#ifdef _KERNEL
kmem_free(params->curveb, strlen(params->curveb) + 1);
#else
free(params->curveb);
#endif
if (params->genx != NULL)
#ifdef _KERNEL
kmem_free(params->genx, strlen(params->genx) + 1);
#else
free(params->genx);
#endif
if (params->geny != NULL)
#ifdef _KERNEL
kmem_free(params->geny, strlen(params->geny) + 1);
#else
free(params->geny);
#endif
if (params->order != NULL)
#ifdef _KERNEL
kmem_free(params->order, strlen(params->order) + 1);
#else
free(params->order);
#endif
#ifdef _KERNEL
kmem_free(params, sizeof(ECCurveParams));
#else
free(params);
#endif
}