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Diffstat (limited to 'usr/src/common/crypto/ecc/ecdecode.c')
-rw-r--r--usr/src/common/crypto/ecc/ecdecode.c610
1 files changed, 610 insertions, 0 deletions
diff --git a/usr/src/common/crypto/ecc/ecdecode.c b/usr/src/common/crypto/ecc/ecdecode.c
new file mode 100644
index 0000000000..fd42ffa98e
--- /dev/null
+++ b/usr/src/common/crypto/ecc/ecdecode.c
@@ -0,0 +1,610 @@
+/*
+ * ***** 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 Cryptography 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):
+ * Dr Vipul Gupta <vipul.gupta@sun.com> and
+ * 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 ***** */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Sun elects to use this software under the MPL license.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/param.h>
+#ifdef _KERNEL
+#include <sys/kmem.h>
+#else
+#include <string.h>
+#endif
+#include "ec.h"
+#include "ecl-curve.h"
+#include "ecc_impl.h"
+
+#define MAX_ECKEY_LEN 72
+#define SEC_ASN1_OBJECT_ID 0x06
+
+/*
+ * Initializes a SECItem from a hexadecimal string
+ *
+ * Warning: This function ignores leading 00's, so any leading 00's
+ * in the hexadecimal string must be optional.
+ */
+static SECItem *
+hexString2SECItem(PRArenaPool *arena, SECItem *item, const char *str,
+ int kmflag)
+{
+ int i = 0;
+ int byteval = 0;
+ int tmp = strlen(str);
+
+ if ((tmp % 2) != 0) return NULL;
+
+ /* skip leading 00's unless the hex string is "00" */
+ while ((tmp > 2) && (str[0] == '0') && (str[1] == '0')) {
+ str += 2;
+ tmp -= 2;
+ }
+
+ item->data = (unsigned char *) PORT_ArenaAlloc(arena, tmp/2, kmflag);
+ if (item->data == NULL) return NULL;
+ item->len = tmp/2;
+
+ while (str[i]) {
+ if ((str[i] >= '0') && (str[i] <= '9'))
+ tmp = str[i] - '0';
+ else if ((str[i] >= 'a') && (str[i] <= 'f'))
+ tmp = str[i] - 'a' + 10;
+ else if ((str[i] >= 'A') && (str[i] <= 'F'))
+ tmp = str[i] - 'A' + 10;
+ else
+ return NULL;
+
+ byteval = byteval * 16 + tmp;
+ if ((i % 2) != 0) {
+ item->data[i/2] = byteval;
+ byteval = 0;
+ }
+ i++;
+ }
+
+ return item;
+}
+
+static SECStatus
+gf_populate_params(ECCurveName name, ECFieldType field_type, ECParams *params,
+ int kmflag)
+{
+ SECStatus rv = SECFailure;
+ const ECCurveParams *curveParams;
+ /* 2 ['0'+'4'] + MAX_ECKEY_LEN * 2 [x,y] * 2 [hex string] + 1 ['\0'] */
+ char genenc[3 + 2 * 2 * MAX_ECKEY_LEN];
+
+ if ((name < ECCurve_noName) || (name > ECCurve_pastLastCurve)) goto cleanup;
+ params->name = name;
+ curveParams = ecCurve_map[params->name];
+ CHECK_OK(curveParams);
+ params->fieldID.size = curveParams->size;
+ params->fieldID.type = field_type;
+ if (field_type == ec_field_GFp) {
+ CHECK_OK(hexString2SECItem(NULL, &params->fieldID.u.prime,
+ curveParams->irr, kmflag));
+ } else {
+ CHECK_OK(hexString2SECItem(NULL, &params->fieldID.u.poly,
+ curveParams->irr, kmflag));
+ }
+ CHECK_OK(hexString2SECItem(NULL, &params->curve.a,
+ curveParams->curvea, kmflag));
+ CHECK_OK(hexString2SECItem(NULL, &params->curve.b,
+ curveParams->curveb, kmflag));
+ genenc[0] = '0';
+ genenc[1] = '4';
+ genenc[2] = '\0';
+ strcat(genenc, curveParams->genx);
+ strcat(genenc, curveParams->geny);
+ CHECK_OK(hexString2SECItem(NULL, &params->base, genenc, kmflag));
+ CHECK_OK(hexString2SECItem(NULL, &params->order,
+ curveParams->order, kmflag));
+ params->cofactor = curveParams->cofactor;
+
+ rv = SECSuccess;
+
+cleanup:
+ return rv;
+}
+
+ECCurveName SECOID_FindOIDTag(const SECItem *);
+
+SECStatus
+EC_FillParams(PRArenaPool *arena, const SECItem *encodedParams,
+ ECParams *params, int kmflag)
+{
+ SECStatus rv = SECFailure;
+ ECCurveName tag;
+ SECItem oid = { siBuffer, NULL, 0};
+
+#if EC_DEBUG
+ int i;
+
+ printf("Encoded params in EC_DecodeParams: ");
+ for (i = 0; i < encodedParams->len; i++) {
+ printf("%02x:", encodedParams->data[i]);
+ }
+ printf("\n");
+#endif
+
+ if ((encodedParams->len != ANSI_X962_CURVE_OID_TOTAL_LEN) &&
+ (encodedParams->len != SECG_CURVE_OID_TOTAL_LEN)) {
+ PORT_SetError(SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE);
+ return SECFailure;
+ };
+
+ oid.len = encodedParams->len - 2;
+ oid.data = encodedParams->data + 2;
+ if ((encodedParams->data[0] != SEC_ASN1_OBJECT_ID) ||
+ ((tag = SECOID_FindOIDTag(&oid)) == ECCurve_noName)) {
+ PORT_SetError(SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE);
+ return SECFailure;
+ }
+
+ params->arena = arena;
+ params->cofactor = 0;
+ params->type = ec_params_named;
+ params->name = ECCurve_noName;
+
+ /* For named curves, fill out curveOID */
+ params->curveOID.len = oid.len;
+ params->curveOID.data = (unsigned char *) PORT_ArenaAlloc(NULL, oid.len,
+ kmflag);
+ if (params->curveOID.data == NULL) goto cleanup;
+ memcpy(params->curveOID.data, oid.data, oid.len);
+
+#if EC_DEBUG
+ printf("Curve: %s\n", SECOID_FindOIDTagDescription(tag));
+#endif
+
+ switch (tag) {
+
+ /* Binary curves */
+
+ case ECCurve_X9_62_CHAR2_PNB163V1:
+ /* Populate params for c2pnb163v1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_PNB163V1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_PNB163V2:
+ /* Populate params for c2pnb163v2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_PNB163V2, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_PNB163V3:
+ /* Populate params for c2pnb163v3 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_PNB163V3, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_PNB176V1:
+ /* Populate params for c2pnb176v1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_PNB176V1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_TNB191V1:
+ /* Populate params for c2tnb191v1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_TNB191V1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_TNB191V2:
+ /* Populate params for c2tnb191v2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_TNB191V2, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_TNB191V3:
+ /* Populate params for c2tnb191v3 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_TNB191V3, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_PNB208W1:
+ /* Populate params for c2pnb208w1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_PNB208W1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_TNB239V1:
+ /* Populate params for c2tnb239v1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_TNB239V1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_TNB239V2:
+ /* Populate params for c2tnb239v2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_TNB239V2, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_TNB239V3:
+ /* Populate params for c2tnb239v3 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_TNB239V3, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_PNB272W1:
+ /* Populate params for c2pnb272w1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_PNB272W1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_PNB304W1:
+ /* Populate params for c2pnb304w1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_PNB304W1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_TNB359V1:
+ /* Populate params for c2tnb359v1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_TNB359V1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_PNB368W1:
+ /* Populate params for c2pnb368w1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_PNB368W1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_CHAR2_TNB431R1:
+ /* Populate params for c2tnb431r1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_CHAR2_TNB431R1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_113R1:
+ /* Populate params for sect113r1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_113R1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_113R2:
+ /* Populate params for sect113r2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_113R2, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_131R1:
+ /* Populate params for sect131r1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_131R1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_131R2:
+ /* Populate params for sect131r2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_131R2, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_163K1:
+ /* Populate params for sect163k1
+ * (the NIST K-163 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_163K1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_163R1:
+ /* Populate params for sect163r1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_163R1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_163R2:
+ /* Populate params for sect163r2
+ * (the NIST B-163 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_163R2, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_193R1:
+ /* Populate params for sect193r1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_193R1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_193R2:
+ /* Populate params for sect193r2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_193R2, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_233K1:
+ /* Populate params for sect233k1
+ * (the NIST K-233 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_233K1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_233R1:
+ /* Populate params for sect233r1
+ * (the NIST B-233 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_233R1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_239K1:
+ /* Populate params for sect239k1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_239K1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_283K1:
+ /* Populate params for sect283k1
+ * (the NIST K-283 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_283K1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_283R1:
+ /* Populate params for sect283r1
+ * (the NIST B-283 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_283R1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_409K1:
+ /* Populate params for sect409k1
+ * (the NIST K-409 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_409K1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_409R1:
+ /* Populate params for sect409r1
+ * (the NIST B-409 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_409R1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_571K1:
+ /* Populate params for sect571k1
+ * (the NIST K-571 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_571K1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_CHAR2_571R1:
+ /* Populate params for sect571r1
+ * (the NIST B-571 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_CHAR2_571R1, ec_field_GF2m,
+ params, kmflag) );
+ break;
+
+ /* Prime curves */
+
+ case ECCurve_X9_62_PRIME_192V1:
+ /* Populate params for prime192v1 aka secp192r1
+ * (the NIST P-192 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_PRIME_192V1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_PRIME_192V2:
+ /* Populate params for prime192v2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_PRIME_192V2, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_PRIME_192V3:
+ /* Populate params for prime192v3 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_PRIME_192V3, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_PRIME_239V1:
+ /* Populate params for prime239v1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_PRIME_239V1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_PRIME_239V2:
+ /* Populate params for prime239v2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_PRIME_239V2, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_PRIME_239V3:
+ /* Populate params for prime239v3 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_PRIME_239V3, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_X9_62_PRIME_256V1:
+ /* Populate params for prime256v1 aka secp256r1
+ * (the NIST P-256 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_X9_62_PRIME_256V1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_112R1:
+ /* Populate params for secp112r1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_112R1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_112R2:
+ /* Populate params for secp112r2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_112R2, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_128R1:
+ /* Populate params for secp128r1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_128R1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_128R2:
+ /* Populate params for secp128r2 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_128R2, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_160K1:
+ /* Populate params for secp160k1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_160K1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_160R1:
+ /* Populate params for secp160r1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_160R1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_160R2:
+ /* Populate params for secp160r1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_160R2, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_192K1:
+ /* Populate params for secp192k1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_192K1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_224K1:
+ /* Populate params for secp224k1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_224K1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_224R1:
+ /* Populate params for secp224r1
+ * (the NIST P-224 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_224R1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_256K1:
+ /* Populate params for secp256k1 */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_256K1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_384R1:
+ /* Populate params for secp384r1
+ * (the NIST P-384 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_384R1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ case ECCurve_SECG_PRIME_521R1:
+ /* Populate params for secp521r1
+ * (the NIST P-521 curve)
+ */
+ CHECK_SEC_OK( gf_populate_params(ECCurve_SECG_PRIME_521R1, ec_field_GFp,
+ params, kmflag) );
+ break;
+
+ default:
+ break;
+ };
+
+cleanup:
+ if (!params->cofactor) {
+ PORT_SetError(SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE);
+#if EC_DEBUG
+ printf("Unrecognized curve, returning NULL params\n");
+#endif
+ }
+
+ return rv;
+}
+
+SECStatus
+EC_DecodeParams(const SECItem *encodedParams, ECParams **ecparams, int kmflag)
+{
+ PRArenaPool *arena;
+ ECParams *params;
+ SECStatus rv = SECFailure;
+
+ /* Initialize an arena for the ECParams structure */
+ if (!(arena = PORT_NewArena(NSS_FREEBL_DEFAULT_CHUNKSIZE)))
+ return SECFailure;
+
+ params = (ECParams *)PORT_ArenaZAlloc(NULL, sizeof(ECParams), kmflag);
+ if (!params) {
+ PORT_FreeArena(NULL, B_TRUE);
+ return SECFailure;
+ }
+
+ /* Copy the encoded params */
+ SECITEM_AllocItem(arena, &(params->DEREncoding), encodedParams->len,
+ kmflag);
+ memcpy(params->DEREncoding.data, encodedParams->data, encodedParams->len);
+
+ /* Fill out the rest of the ECParams structure based on
+ * the encoded params
+ */
+ rv = EC_FillParams(NULL, encodedParams, params, kmflag);
+ if (rv == SECFailure) {
+ PORT_FreeArena(NULL, B_TRUE);
+ return SECFailure;
+ } else {
+ *ecparams = params;;
+ return SECSuccess;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-03 05:58:03 +0000