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394 lines
11 KiB
C
394 lines
11 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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/*
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* CMS miscellaneous utility functions.
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*
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* $Id: cmsutil.c,v 1.10 2004/04/25 15:03:16 gerv%gerv.net Exp $
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*/
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#include "nssrenam.h"
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#include "cmslocal.h"
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#include "cert.h"
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#include "key.h"
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#include "secasn1.h"
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#include "secitem.h"
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#include "secoid.h"
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#include "pk11func.h"
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#include "secerr.h"
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#include "sechash.h"
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/*
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* NSS_CMSArray_SortByDER - sort array of objects by objects' DER encoding
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*
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* make sure that the order of the objects guarantees valid DER (which must be
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* in lexigraphically ascending order for a SET OF); if reordering is necessary it
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* will be done in place (in objs).
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*/
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SECStatus
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NSS_CMSArray_SortByDER(void **objs, const SEC_ASN1Template *objtemplate, void **objs2)
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{
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PRArenaPool *poolp;
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int num_objs;
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SECItem **enc_objs;
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SECStatus rv = SECFailure;
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int i;
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if (objs == NULL) /* already sorted */
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return SECSuccess;
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num_objs = NSS_CMSArray_Count((void **)objs);
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if (num_objs == 0 || num_objs == 1) /* already sorted. */
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return SECSuccess;
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poolp = PORT_NewArena (1024); /* arena for temporaries */
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if (poolp == NULL)
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return SECFailure; /* no memory; nothing we can do... */
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/*
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* Allocate arrays to hold the individual encodings which we will use
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* for comparisons and the reordered attributes as they are sorted.
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*/
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enc_objs = (SECItem **)PORT_ArenaZAlloc(poolp, (num_objs + 1) * sizeof(SECItem *));
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if (enc_objs == NULL)
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goto loser;
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/* DER encode each individual object. */
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for (i = 0; i < num_objs; i++) {
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enc_objs[i] = SEC_ASN1EncodeItem(poolp, NULL, objs[i], objtemplate);
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if (enc_objs[i] == NULL)
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goto loser;
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}
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enc_objs[num_objs] = NULL;
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/* now compare and sort objs by the order of enc_objs */
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NSS_CMSArray_Sort((void **)enc_objs, NSS_CMSUtil_DERCompare, objs, objs2);
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rv = SECSuccess;
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loser:
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PORT_FreeArena (poolp, PR_FALSE);
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return rv;
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}
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/*
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* NSS_CMSUtil_DERCompare - for use with NSS_CMSArray_Sort to
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* sort arrays of SECItems containing DER
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*/
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int
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NSS_CMSUtil_DERCompare(void *a, void *b)
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{
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SECItem *der1 = (SECItem *)a;
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SECItem *der2 = (SECItem *)b;
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int j;
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/*
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* Find the lowest (lexigraphically) encoding. One that is
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* shorter than all the rest is known to be "less" because each
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* attribute is of the same type (a SEQUENCE) and so thus the
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* first octet of each is the same, and the second octet is
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* the length (or the length of the length with the high bit
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* set, followed by the length, which also works out to always
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* order the shorter first). Two (or more) that have the
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* same length need to be compared byte by byte until a mismatch
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* is found.
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*/
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if (der1->len != der2->len)
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return (der1->len < der2->len) ? -1 : 1;
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for (j = 0; j < der1->len; j++) {
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if (der1->data[j] == der2->data[j])
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continue;
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return (der1->data[j] < der2->data[j]) ? -1 : 1;
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}
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return 0;
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}
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/*
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* NSS_CMSAlgArray_GetIndexByAlgID - find a specific algorithm in an array of
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* algorithms.
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*
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* algorithmArray - array of algorithm IDs
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* algid - algorithmid of algorithm to pick
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*
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* Returns:
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* An integer containing the index of the algorithm in the array or -1 if
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* algorithm was not found.
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*/
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int
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NSS_CMSAlgArray_GetIndexByAlgID(SECAlgorithmID **algorithmArray, SECAlgorithmID *algid)
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{
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int i;
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if (algorithmArray == NULL || algorithmArray[0] == NULL)
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return -1;
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for (i = 0; algorithmArray[i] != NULL; i++) {
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if (SECOID_CompareAlgorithmID(algorithmArray[i], algid) == SECEqual)
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break; /* bingo */
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}
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if (algorithmArray[i] == NULL)
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return -1; /* not found */
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return i;
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}
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/*
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* NSS_CMSAlgArray_GetIndexByAlgTag - find a specific algorithm in an array of
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* algorithms.
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*
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* algorithmArray - array of algorithm IDs
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* algtag - algorithm tag of algorithm to pick
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*
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* Returns:
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* An integer containing the index of the algorithm in the array or -1 if
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* algorithm was not found.
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*/
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int
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NSS_CMSAlgArray_GetIndexByAlgTag(SECAlgorithmID **algorithmArray,
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SECOidTag algtag)
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{
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SECOidData *algid;
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int i = -1;
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if (algorithmArray == NULL || algorithmArray[0] == NULL)
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return i;
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#ifdef ORDER_N_SQUARED
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for (i = 0; algorithmArray[i] != NULL; i++) {
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algid = SECOID_FindOID(&(algorithmArray[i]->algorithm));
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if (algid->offset == algtag)
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break; /* bingo */
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}
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#else
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algid = SECOID_FindOIDByTag(algtag);
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if (!algid)
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return i;
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for (i = 0; algorithmArray[i] != NULL; i++) {
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if (SECITEM_ItemsAreEqual(&algorithmArray[i]->algorithm, &algid->oid))
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break; /* bingo */
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}
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#endif
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if (algorithmArray[i] == NULL)
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return -1; /* not found */
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return i;
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}
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const SECHashObject *
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NSS_CMSUtil_GetHashObjByAlgID(SECAlgorithmID *algid)
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{
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SECOidTag oidTag = SECOID_FindOIDTag(&(algid->algorithm));
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const SECHashObject *digobj = HASH_GetHashObjectByOidTag(oidTag);
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return digobj;
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}
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/*
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* XXX I would *really* like to not have to do this, but the current
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* signing interface gives me little choice.
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*/
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SECOidTag
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NSS_CMSUtil_MakeSignatureAlgorithm(SECOidTag hashalg, SECOidTag encalg)
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{
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switch (encalg) {
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case SEC_OID_PKCS1_RSA_ENCRYPTION:
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switch (hashalg) {
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case SEC_OID_MD2:
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return SEC_OID_PKCS1_MD2_WITH_RSA_ENCRYPTION;
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case SEC_OID_MD5:
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return SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION;
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case SEC_OID_SHA1:
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return SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION;
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case SEC_OID_SHA256:
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return SEC_OID_PKCS1_SHA256_WITH_RSA_ENCRYPTION;
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case SEC_OID_SHA384:
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return SEC_OID_PKCS1_SHA384_WITH_RSA_ENCRYPTION;
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case SEC_OID_SHA512:
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return SEC_OID_PKCS1_SHA512_WITH_RSA_ENCRYPTION;
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default:
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return SEC_OID_UNKNOWN;
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}
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case SEC_OID_ANSIX9_DSA_SIGNATURE:
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case SEC_OID_MISSI_KEA_DSS:
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case SEC_OID_MISSI_DSS:
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switch (hashalg) {
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case SEC_OID_SHA1:
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return SEC_OID_ANSIX9_DSA_SIGNATURE_WITH_SHA1_DIGEST;
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default:
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return SEC_OID_UNKNOWN;
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}
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default:
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break;
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}
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return encalg; /* maybe it is already the right algid */
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}
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const SEC_ASN1Template *
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NSS_CMSUtil_GetTemplateByTypeTag(SECOidTag type)
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{
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const SEC_ASN1Template *template;
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extern const SEC_ASN1Template NSSCMSSignedDataTemplate[];
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extern const SEC_ASN1Template NSSCMSEnvelopedDataTemplate[];
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extern const SEC_ASN1Template NSSCMSEncryptedDataTemplate[];
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extern const SEC_ASN1Template NSSCMSDigestedDataTemplate[];
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switch (type) {
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case SEC_OID_PKCS7_SIGNED_DATA:
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template = NSSCMSSignedDataTemplate;
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break;
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case SEC_OID_PKCS7_ENVELOPED_DATA:
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template = NSSCMSEnvelopedDataTemplate;
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break;
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case SEC_OID_PKCS7_ENCRYPTED_DATA:
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template = NSSCMSEncryptedDataTemplate;
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break;
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case SEC_OID_PKCS7_DIGESTED_DATA:
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template = NSSCMSDigestedDataTemplate;
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break;
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default:
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case SEC_OID_PKCS7_DATA:
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template = NULL;
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break;
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}
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return template;
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}
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size_t
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NSS_CMSUtil_GetSizeByTypeTag(SECOidTag type)
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{
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size_t size;
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switch (type) {
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case SEC_OID_PKCS7_SIGNED_DATA:
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size = sizeof(NSSCMSSignedData);
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break;
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case SEC_OID_PKCS7_ENVELOPED_DATA:
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size = sizeof(NSSCMSEnvelopedData);
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break;
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case SEC_OID_PKCS7_ENCRYPTED_DATA:
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size = sizeof(NSSCMSEncryptedData);
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break;
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case SEC_OID_PKCS7_DIGESTED_DATA:
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size = sizeof(NSSCMSDigestedData);
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break;
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default:
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case SEC_OID_PKCS7_DATA:
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size = 0;
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break;
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}
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return size;
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}
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NSSCMSContentInfo *
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NSS_CMSContent_GetContentInfo(void *msg, SECOidTag type)
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{
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NSSCMSContent c;
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NSSCMSContentInfo *cinfo = NULL;
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if (!msg)
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return cinfo;
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c.pointer = msg;
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switch (type) {
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case SEC_OID_PKCS7_SIGNED_DATA:
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cinfo = &(c.signedData->contentInfo);
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break;
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case SEC_OID_PKCS7_ENVELOPED_DATA:
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cinfo = &(c.envelopedData->contentInfo);
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break;
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case SEC_OID_PKCS7_ENCRYPTED_DATA:
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cinfo = &(c.encryptedData->contentInfo);
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break;
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case SEC_OID_PKCS7_DIGESTED_DATA:
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cinfo = &(c.digestedData->contentInfo);
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break;
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default:
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cinfo = NULL;
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}
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return cinfo;
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}
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const char *
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NSS_CMSUtil_VerificationStatusToString(NSSCMSVerificationStatus vs)
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{
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switch (vs) {
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case NSSCMSVS_Unverified: return "Unverified";
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case NSSCMSVS_GoodSignature: return "GoodSignature";
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case NSSCMSVS_BadSignature: return "BadSignature";
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case NSSCMSVS_DigestMismatch: return "DigestMismatch";
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case NSSCMSVS_SigningCertNotFound: return "SigningCertNotFound";
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case NSSCMSVS_SigningCertNotTrusted: return "SigningCertNotTrusted";
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case NSSCMSVS_SignatureAlgorithmUnknown: return "SignatureAlgorithmUnknown";
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case NSSCMSVS_SignatureAlgorithmUnsupported: return "SignatureAlgorithmUnsupported";
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case NSSCMSVS_MalformedSignature: return "MalformedSignature";
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case NSSCMSVS_ProcessingError: return "ProcessingError";
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default: return "Unknown";
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}
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}
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SECStatus
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NSS_CMSDEREncode(NSSCMSMessage *cmsg, SECItem *input, SECItem *derOut,
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PLArenaPool *arena)
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{
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NSSCMSEncoderContext *ecx;
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SECStatus rv = SECSuccess;
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if (!cmsg || !derOut || !arena) {
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PORT_SetError(SEC_ERROR_INVALID_ARGS);
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return SECFailure;
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}
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ecx = NSS_CMSEncoder_Start(cmsg, 0, 0, derOut, arena, 0, 0, 0, 0, 0, 0);
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if (!ecx) {
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PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
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return SECFailure;
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}
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if (input) {
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rv = NSS_CMSEncoder_Update(ecx, (const char*)input->data, input->len);
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if (rv) {
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PORT_SetError(SEC_ERROR_BAD_DATA);
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}
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}
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rv |= NSS_CMSEncoder_Finish(ecx);
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if (rv) {
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PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
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}
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return rv;
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}
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