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/*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* 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
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "ecl.h"
#include "ecl-curve.h"
#include "ecl-priv.h"
#include <stdlib.h>
#include <string.h>
#define CHECK(func) if ((func) == NULL) { res = 0; goto CLEANUP; }
/* Duplicates an ECCurveParams */
ECCurveParams *
ECCurveParams_dup(const ECCurveParams * params)
{
int res = 1;
ECCurveParams *ret = NULL;
CHECK(ret = (ECCurveParams *) calloc(1, sizeof(ECCurveParams)));
if (params->text != NULL) {
CHECK(ret->text = strdup(params->text));
}
ret->field = params->field;
ret->size = params->size;
if (params->irr != NULL) {
CHECK(ret->irr = strdup(params->irr));
}
if (params->curvea != NULL) {
CHECK(ret->curvea = strdup(params->curvea));
}
if (params->curveb != NULL) {
CHECK(ret->curveb = strdup(params->curveb));
}
if (params->genx != NULL) {
CHECK(ret->genx = strdup(params->genx));
}
if (params->geny != NULL) {
CHECK(ret->geny = strdup(params->geny));
}
if (params->order != NULL) {
CHECK(ret->order = strdup(params->order));
}
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)
{
if ((name <= ECCurve_noName) || (ECCurve_pastLastCurve <= name) ||
(ecCurve_map[name] == NULL)) {
return NULL;
} else {
return ECCurveParams_dup(ecCurve_map[name]);
}
}
/* Free the memory allocated (if any) to an ECCurveParams object. */
void
EC_FreeCurveParams(ECCurveParams * params)
{
if (params == NULL)
return;
if (params->text != NULL)
free(params->text);
if (params->irr != NULL)
free(params->irr);
if (params->curvea != NULL)
free(params->curvea);
if (params->curveb != NULL)
free(params->curveb);
if (params->genx != NULL)
free(params->genx);
if (params->geny != NULL)
free(params->geny);
if (params->order != NULL)
free(params->order);
free(params);
}
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