mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-11 10:20:19 +01:00
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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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