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124 lines
3.6 KiB
C
124 lines
3.6 KiB
C
/*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the elliptic curve math library.
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*
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* The Initial Developer of the Original Code is
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* Sun Microsystems, Inc.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Douglas Stebila <douglas@stebila.ca>, Sun Microsystems Laboratories
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "ecl.h"
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#include "ecl-curve.h"
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#include "ecl-priv.h"
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#include <stdlib.h>
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#include <string.h>
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#define CHECK(func) if ((func) == NULL) { res = 0; goto CLEANUP; }
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/* Duplicates an ECCurveParams */
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ECCurveParams *
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ECCurveParams_dup(const ECCurveParams * params)
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{
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int res = 1;
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ECCurveParams *ret = NULL;
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CHECK(ret = (ECCurveParams *) calloc(1, sizeof(ECCurveParams)));
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if (params->text != NULL) {
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CHECK(ret->text = strdup(params->text));
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}
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ret->field = params->field;
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ret->size = params->size;
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if (params->irr != NULL) {
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CHECK(ret->irr = strdup(params->irr));
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}
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if (params->curvea != NULL) {
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CHECK(ret->curvea = strdup(params->curvea));
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}
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if (params->curveb != NULL) {
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CHECK(ret->curveb = strdup(params->curveb));
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}
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if (params->genx != NULL) {
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CHECK(ret->genx = strdup(params->genx));
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}
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if (params->geny != NULL) {
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CHECK(ret->geny = strdup(params->geny));
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}
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if (params->order != NULL) {
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CHECK(ret->order = strdup(params->order));
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}
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ret->cofactor = params->cofactor;
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CLEANUP:
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if (res != 1) {
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EC_FreeCurveParams(ret);
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return NULL;
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}
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return ret;
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}
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#undef CHECK
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/* Construct ECCurveParams from an ECCurveName */
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ECCurveParams *
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EC_GetNamedCurveParams(const ECCurveName name)
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{
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if ((name <= ECCurve_noName) || (ECCurve_pastLastCurve <= name) ||
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(ecCurve_map[name] == NULL)) {
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return NULL;
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} else {
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return ECCurveParams_dup(ecCurve_map[name]);
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}
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}
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/* Free the memory allocated (if any) to an ECCurveParams object. */
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void
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EC_FreeCurveParams(ECCurveParams * params)
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{
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if (params == NULL)
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return;
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if (params->text != NULL)
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free(params->text);
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if (params->irr != NULL)
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free(params->irr);
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if (params->curvea != NULL)
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free(params->curvea);
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if (params->curveb != NULL)
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free(params->curveb);
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if (params->genx != NULL)
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free(params->genx);
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if (params->geny != NULL)
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free(params->geny);
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if (params->order != NULL)
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free(params->order);
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free(params);
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}
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