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469 lines
15 KiB
C
469 lines
15 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 Netscape security libraries.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Dr Vipul Gupta <vipul.gupta@sun.com>, 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 "lowkeyi.h"
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#include "secoid.h"
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#include "secitem.h"
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#include "secder.h"
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#include "secasn1.h"
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#include "secerr.h"
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SEC_ASN1_MKSUB(SEC_AnyTemplate)
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SEC_ASN1_MKSUB(SEC_BitStringTemplate)
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SEC_ASN1_MKSUB(SEC_ObjectIDTemplate)
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SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
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static const SEC_ASN1Template nsslowkey_AttributeTemplate[] = {
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{ SEC_ASN1_SEQUENCE,
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0, NULL, sizeof(NSSLOWKEYAttribute) },
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{ SEC_ASN1_OBJECT_ID, offsetof(NSSLOWKEYAttribute, attrType) },
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{ SEC_ASN1_SET_OF | SEC_ASN1_XTRN, offsetof(NSSLOWKEYAttribute, attrValue),
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SEC_ASN1_SUB(SEC_AnyTemplate) },
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{ 0 }
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};
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static const SEC_ASN1Template nsslowkey_SetOfAttributeTemplate[] = {
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{ SEC_ASN1_SET_OF, 0, nsslowkey_AttributeTemplate },
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};
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/* ASN1 Templates for new decoder/encoder */
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const SEC_ASN1Template nsslowkey_PrivateKeyInfoTemplate[] = {
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{ SEC_ASN1_SEQUENCE,
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0, NULL, sizeof(NSSLOWKEYPrivateKeyInfo) },
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{ SEC_ASN1_INTEGER,
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offsetof(NSSLOWKEYPrivateKeyInfo,version) },
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{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
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offsetof(NSSLOWKEYPrivateKeyInfo,algorithm),
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SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
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{ SEC_ASN1_OCTET_STRING,
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offsetof(NSSLOWKEYPrivateKeyInfo,privateKey) },
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{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
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offsetof(NSSLOWKEYPrivateKeyInfo, attributes),
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nsslowkey_SetOfAttributeTemplate },
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{ 0 }
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};
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const SEC_ASN1Template nsslowkey_PQGParamsTemplate[] = {
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{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(PQGParams) },
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{ SEC_ASN1_INTEGER, offsetof(PQGParams,prime) },
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{ SEC_ASN1_INTEGER, offsetof(PQGParams,subPrime) },
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{ SEC_ASN1_INTEGER, offsetof(PQGParams,base) },
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{ 0, }
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};
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const SEC_ASN1Template nsslowkey_RSAPrivateKeyTemplate[] = {
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{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.version) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.modulus) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.publicExponent) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.privateExponent) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.prime1) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.prime2) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.exponent1) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.exponent2) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.rsa.coefficient) },
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{ 0 }
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};
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const SEC_ASN1Template nsslowkey_DSAPrivateKeyTemplate[] = {
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{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dsa.publicValue) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dsa.privateValue) },
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{ 0, }
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};
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const SEC_ASN1Template nsslowkey_DSAPrivateKeyExportTemplate[] = {
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dsa.privateValue) },
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};
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const SEC_ASN1Template nsslowkey_DHPrivateKeyTemplate[] = {
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{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dh.publicValue) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dh.privateValue) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dh.base) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.dh.prime) },
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{ 0, }
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};
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#ifdef NSS_ENABLE_ECC
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/* XXX This is just a placeholder for later when we support
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* generic curves and need full-blown support for parsing EC
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* parameters. For now, we only support named curves in which
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* EC params are simply encoded as an object ID and we don't
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* use nsslowkey_ECParamsTemplate.
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*/
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const SEC_ASN1Template nsslowkey_ECParamsTemplate[] = {
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{ SEC_ASN1_CHOICE, offsetof(ECParams,type), NULL, sizeof(ECParams) },
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{ SEC_ASN1_OBJECT_ID, offsetof(ECParams,curveOID), NULL, ec_params_named },
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{ 0, }
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};
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/* NOTE: The SECG specification allows the private key structure
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* to contain curve parameters but recommends that they be stored
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* in the PrivateKeyAlgorithmIdentifier field of the PrivateKeyInfo
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* instead.
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*/
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const SEC_ASN1Template nsslowkey_ECPrivateKeyTemplate[] = {
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{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
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{ SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey,u.ec.version) },
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{ SEC_ASN1_OCTET_STRING,
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offsetof(NSSLOWKEYPrivateKey,u.ec.privateValue) },
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/* XXX The following template works for now since we only
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* support named curves for which the parameters are
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* encoded as an object ID. When we support generic curves,
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* we'll need to define nsslowkey_ECParamsTemplate
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*/
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#if 1
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{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
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SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC | SEC_ASN1_XTRN | 0,
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offsetof(NSSLOWKEYPrivateKey,u.ec.ecParams.curveOID),
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SEC_ASN1_SUB(SEC_ObjectIDTemplate) },
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#else
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{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
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SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC | 0,
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offsetof(NSSLOWKEYPrivateKey,u.ec.ecParams),
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nsslowkey_ECParamsTemplate },
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#endif
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{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
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SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC |
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SEC_ASN1_XTRN | 1,
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offsetof(NSSLOWKEYPrivateKey,u.ec.publicValue),
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SEC_ASN1_SUB(SEC_BitStringTemplate) },
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{ 0, }
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};
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/*
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* smaller version of EC_FillParams. In this code, we only need
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* oid and DER data.
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*/
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SECStatus
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LGEC_FillParams(PRArenaPool *arena, const SECItem *encodedParams,
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ECParams *params)
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{
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SECOidTag tag;
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SECItem oid = { siBuffer, NULL, 0};
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#if EC_DEBUG
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int i;
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printf("Encoded params in EC_DecodeParams: ");
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for (i = 0; i < encodedParams->len; i++) {
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printf("%02x:", encodedParams->data[i]);
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}
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printf("\n");
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#endif
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oid.len = encodedParams->len - 2;
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oid.data = encodedParams->data + 2;
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if ((encodedParams->data[0] != SEC_ASN1_OBJECT_ID) ||
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((tag = SECOID_FindOIDTag(&oid)) == SEC_OID_UNKNOWN)) {
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PORT_SetError(SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE);
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return SECFailure;
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}
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params->arena = arena;
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/* For named curves, fill out curveOID */
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params->curveOID.len = oid.len;
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params->curveOID.data = (unsigned char *) PORT_ArenaAlloc(arena, oid.len);
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if (params->curveOID.data == NULL) {
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return SECFailure;
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}
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memcpy(params->curveOID.data, oid.data, oid.len);
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return SECSuccess;
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}
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/* Copy all of the fields from srcParams into dstParams
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*/
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SECStatus
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LGEC_CopyParams(PRArenaPool *arena, ECParams *dstParams,
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const ECParams *srcParams)
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{
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SECStatus rv = SECFailure;
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dstParams->arena = arena;
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rv = SECITEM_CopyItem(arena, &dstParams->DEREncoding,
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&srcParams->DEREncoding);
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if (rv != SECSuccess) {
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goto loser;
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}
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rv =SECITEM_CopyItem(arena, &dstParams->curveOID,
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&srcParams->curveOID);
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if (rv != SECSuccess) {
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goto loser;
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}
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return SECSuccess;
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loser:
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return SECFailure;
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}
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#endif /* NSS_ENABLE_ECC */
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/*
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* See bugzilla bug 125359
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* Since NSS (via PKCS#11) wants to handle big integers as unsigned ints,
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* all of the templates above that en/decode into integers must be converted
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* from ASN.1's signed integer type. This is done by marking either the
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* source or destination (encoding or decoding, respectively) type as
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* siUnsignedInteger.
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*/
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void
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prepare_low_rsa_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
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{
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key->u.rsa.modulus.type = siUnsignedInteger;
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key->u.rsa.publicExponent.type = siUnsignedInteger;
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key->u.rsa.privateExponent.type = siUnsignedInteger;
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key->u.rsa.prime1.type = siUnsignedInteger;
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key->u.rsa.prime2.type = siUnsignedInteger;
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key->u.rsa.exponent1.type = siUnsignedInteger;
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key->u.rsa.exponent2.type = siUnsignedInteger;
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key->u.rsa.coefficient.type = siUnsignedInteger;
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}
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void
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prepare_low_pqg_params_for_asn1(PQGParams *params)
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{
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params->prime.type = siUnsignedInteger;
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params->subPrime.type = siUnsignedInteger;
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params->base.type = siUnsignedInteger;
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}
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void
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prepare_low_dsa_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
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{
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key->u.dsa.publicValue.type = siUnsignedInteger;
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key->u.dsa.privateValue.type = siUnsignedInteger;
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key->u.dsa.params.prime.type = siUnsignedInteger;
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key->u.dsa.params.subPrime.type = siUnsignedInteger;
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key->u.dsa.params.base.type = siUnsignedInteger;
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}
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void
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prepare_low_dsa_priv_key_export_for_asn1(NSSLOWKEYPrivateKey *key)
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{
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key->u.dsa.privateValue.type = siUnsignedInteger;
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}
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void
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prepare_low_dh_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
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{
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key->u.dh.prime.type = siUnsignedInteger;
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key->u.dh.base.type = siUnsignedInteger;
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key->u.dh.publicValue.type = siUnsignedInteger;
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key->u.dh.privateValue.type = siUnsignedInteger;
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}
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#ifdef NSS_ENABLE_ECC
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void
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prepare_low_ecparams_for_asn1(ECParams *params)
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{
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params->DEREncoding.type = siUnsignedInteger;
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params->curveOID.type = siUnsignedInteger;
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}
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void
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prepare_low_ec_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
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{
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key->u.ec.version.type = siUnsignedInteger;
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key->u.ec.ecParams.DEREncoding.type = siUnsignedInteger;
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key->u.ec.ecParams.curveOID.type = siUnsignedInteger;
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key->u.ec.privateValue.type = siUnsignedInteger;
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key->u.ec.publicValue.type = siUnsignedInteger;
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}
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#endif /* NSS_ENABLE_ECC */
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void
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nsslowkey_DestroyPrivateKey(NSSLOWKEYPrivateKey *privk)
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{
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if (privk && privk->arena) {
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PORT_FreeArena(privk->arena, PR_TRUE);
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}
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}
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void
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nsslowkey_DestroyPublicKey(NSSLOWKEYPublicKey *pubk)
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{
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if (pubk && pubk->arena) {
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PORT_FreeArena(pubk->arena, PR_FALSE);
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}
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}
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unsigned
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nsslowkey_PublicModulusLen(NSSLOWKEYPublicKey *pubk)
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{
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unsigned char b0;
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/* interpret modulus length as key strength... in
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* fortezza that's the public key length */
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switch (pubk->keyType) {
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case NSSLOWKEYRSAKey:
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b0 = pubk->u.rsa.modulus.data[0];
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return b0 ? pubk->u.rsa.modulus.len : pubk->u.rsa.modulus.len - 1;
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default:
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break;
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}
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return 0;
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}
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unsigned
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nsslowkey_PrivateModulusLen(NSSLOWKEYPrivateKey *privk)
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{
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unsigned char b0;
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switch (privk->keyType) {
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case NSSLOWKEYRSAKey:
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b0 = privk->u.rsa.modulus.data[0];
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return b0 ? privk->u.rsa.modulus.len : privk->u.rsa.modulus.len - 1;
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default:
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break;
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}
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return 0;
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}
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NSSLOWKEYPublicKey *
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nsslowkey_ConvertToPublicKey(NSSLOWKEYPrivateKey *privk)
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{
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NSSLOWKEYPublicKey *pubk;
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PLArenaPool *arena;
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arena = PORT_NewArena (DER_DEFAULT_CHUNKSIZE);
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if (arena == NULL) {
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PORT_SetError (SEC_ERROR_NO_MEMORY);
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return NULL;
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}
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switch(privk->keyType) {
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case NSSLOWKEYRSAKey:
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case NSSLOWKEYNullKey:
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pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
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sizeof (NSSLOWKEYPublicKey));
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if (pubk != NULL) {
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SECStatus rv;
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pubk->arena = arena;
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pubk->keyType = privk->keyType;
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if (privk->keyType == NSSLOWKEYNullKey) return pubk;
|
||
|
rv = SECITEM_CopyItem(arena, &pubk->u.rsa.modulus,
|
||
|
&privk->u.rsa.modulus);
|
||
|
if (rv == SECSuccess) {
|
||
|
rv = SECITEM_CopyItem (arena, &pubk->u.rsa.publicExponent,
|
||
|
&privk->u.rsa.publicExponent);
|
||
|
if (rv == SECSuccess)
|
||
|
return pubk;
|
||
|
}
|
||
|
} else {
|
||
|
PORT_SetError (SEC_ERROR_NO_MEMORY);
|
||
|
}
|
||
|
break;
|
||
|
case NSSLOWKEYDSAKey:
|
||
|
pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
|
||
|
sizeof(NSSLOWKEYPublicKey));
|
||
|
if (pubk != NULL) {
|
||
|
SECStatus rv;
|
||
|
|
||
|
pubk->arena = arena;
|
||
|
pubk->keyType = privk->keyType;
|
||
|
rv = SECITEM_CopyItem(arena, &pubk->u.dsa.publicValue,
|
||
|
&privk->u.dsa.publicValue);
|
||
|
if (rv != SECSuccess) break;
|
||
|
rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.prime,
|
||
|
&privk->u.dsa.params.prime);
|
||
|
if (rv != SECSuccess) break;
|
||
|
rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.subPrime,
|
||
|
&privk->u.dsa.params.subPrime);
|
||
|
if (rv != SECSuccess) break;
|
||
|
rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.base,
|
||
|
&privk->u.dsa.params.base);
|
||
|
if (rv == SECSuccess) return pubk;
|
||
|
}
|
||
|
break;
|
||
|
case NSSLOWKEYDHKey:
|
||
|
pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
|
||
|
sizeof(NSSLOWKEYPublicKey));
|
||
|
if (pubk != NULL) {
|
||
|
SECStatus rv;
|
||
|
|
||
|
pubk->arena = arena;
|
||
|
pubk->keyType = privk->keyType;
|
||
|
rv = SECITEM_CopyItem(arena, &pubk->u.dh.publicValue,
|
||
|
&privk->u.dh.publicValue);
|
||
|
if (rv != SECSuccess) break;
|
||
|
rv = SECITEM_CopyItem(arena, &pubk->u.dh.prime,
|
||
|
&privk->u.dh.prime);
|
||
|
if (rv != SECSuccess) break;
|
||
|
rv = SECITEM_CopyItem(arena, &pubk->u.dh.base,
|
||
|
&privk->u.dh.base);
|
||
|
if (rv == SECSuccess) return pubk;
|
||
|
}
|
||
|
break;
|
||
|
#ifdef NSS_ENABLE_ECC
|
||
|
case NSSLOWKEYECKey:
|
||
|
pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
|
||
|
sizeof(NSSLOWKEYPublicKey));
|
||
|
if (pubk != NULL) {
|
||
|
SECStatus rv;
|
||
|
|
||
|
pubk->arena = arena;
|
||
|
pubk->keyType = privk->keyType;
|
||
|
rv = SECITEM_CopyItem(arena, &pubk->u.ec.publicValue,
|
||
|
&privk->u.ec.publicValue);
|
||
|
if (rv != SECSuccess) break;
|
||
|
pubk->u.ec.ecParams.arena = arena;
|
||
|
/* Copy the rest of the params */
|
||
|
rv = LGEC_CopyParams(arena, &(pubk->u.ec.ecParams),
|
||
|
&(privk->u.ec.ecParams));
|
||
|
if (rv == SECSuccess) return pubk;
|
||
|
}
|
||
|
break;
|
||
|
#endif /* NSS_ENABLE_ECC */
|
||
|
/* No Fortezza in Low Key implementations (Fortezza keys aren't
|
||
|
* stored in our data base */
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
PORT_FreeArena (arena, PR_FALSE);
|
||
|
return NULL;
|
||
|
}
|
||
|
|