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158 lines
4.3 KiB
C
158 lines
4.3 KiB
C
/* ***** 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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*
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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 "p12plcy.h"
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#include "secoid.h"
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#include "secport.h"
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#include "secpkcs5.h"
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#define PKCS12_NULL 0x0000
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typedef struct pkcs12SuiteMapStr {
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SECOidTag algTag;
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unsigned int keyLengthBits; /* in bits */
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unsigned long suite;
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PRBool allowed;
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PRBool preferred;
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} pkcs12SuiteMap;
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static pkcs12SuiteMap pkcs12SuiteMaps[] = {
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{ SEC_OID_RC4, 40, PKCS12_RC4_40, PR_FALSE, PR_FALSE},
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{ SEC_OID_RC4, 128, PKCS12_RC4_128, PR_FALSE, PR_FALSE},
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{ SEC_OID_RC2_CBC, 40, PKCS12_RC2_CBC_40, PR_FALSE, PR_TRUE},
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{ SEC_OID_RC2_CBC, 128, PKCS12_RC2_CBC_128, PR_FALSE, PR_FALSE},
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{ SEC_OID_DES_CBC, 64, PKCS12_DES_56, PR_FALSE, PR_FALSE},
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{ SEC_OID_DES_EDE3_CBC, 192, PKCS12_DES_EDE3_168, PR_FALSE, PR_FALSE},
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{ SEC_OID_UNKNOWN, 0, PKCS12_NULL, PR_FALSE, PR_FALSE},
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{ SEC_OID_UNKNOWN, 0, 0L, PR_FALSE, PR_FALSE}
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};
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/* determine if algid is an algorithm which is allowed */
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PRBool
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SEC_PKCS12DecryptionAllowed(SECAlgorithmID *algid)
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{
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unsigned int keyLengthBits;
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SECOidTag algId;
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int i;
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algId = SEC_PKCS5GetCryptoAlgorithm(algid);
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if(algId == SEC_OID_UNKNOWN) {
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return PR_FALSE;
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}
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keyLengthBits = (unsigned int)(SEC_PKCS5GetKeyLength(algid) * 8);
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i = 0;
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while(pkcs12SuiteMaps[i].algTag != SEC_OID_UNKNOWN) {
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if((pkcs12SuiteMaps[i].algTag == algId) &&
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(pkcs12SuiteMaps[i].keyLengthBits == keyLengthBits)) {
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return pkcs12SuiteMaps[i].allowed;
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}
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i++;
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}
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return PR_FALSE;
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}
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/* is any encryption allowed? */
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PRBool
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SEC_PKCS12IsEncryptionAllowed(void)
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{
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int i;
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i = 0;
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while(pkcs12SuiteMaps[i].algTag != SEC_OID_UNKNOWN) {
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if(pkcs12SuiteMaps[i].allowed == PR_TRUE) {
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return PR_TRUE;
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}
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i++;
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}
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return PR_FALSE;
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}
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SECStatus
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SEC_PKCS12EnableCipher(long which, int on)
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{
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int i;
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i = 0;
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while(pkcs12SuiteMaps[i].suite != 0L) {
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if(pkcs12SuiteMaps[i].suite == (unsigned long)which) {
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if(on) {
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pkcs12SuiteMaps[i].allowed = PR_TRUE;
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} else {
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pkcs12SuiteMaps[i].allowed = PR_FALSE;
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}
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return SECSuccess;
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}
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i++;
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}
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return SECFailure;
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}
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SECStatus
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SEC_PKCS12SetPreferredCipher(long which, int on)
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{
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int i;
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PRBool turnedOff = PR_FALSE;
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PRBool turnedOn = PR_FALSE;
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i = 0;
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while(pkcs12SuiteMaps[i].suite != 0L) {
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if(pkcs12SuiteMaps[i].preferred == PR_TRUE) {
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pkcs12SuiteMaps[i].preferred = PR_FALSE;
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turnedOff = PR_TRUE;
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}
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if(pkcs12SuiteMaps[i].suite == (unsigned long)which) {
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pkcs12SuiteMaps[i].preferred = PR_TRUE;
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turnedOn = PR_TRUE;
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}
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i++;
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}
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if((turnedOn) && (turnedOff)) {
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return SECSuccess;
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}
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return SECFailure;
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}
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