secalgid.c
上传用户:lyxiangda
上传日期:2007-01-12
资源大小:3042k
文件大小:5k
- /*
- * 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 Netscape security libraries.
- *
- * The Initial Developer of the Original Code is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1994-2000 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- */
- #include "secoid.h"
- #include "secder.h" /* XXX remove this when remove the DERTemplate */
- #include "secasn1.h"
- #include "secitem.h"
- #include "secerr.h"
- /* XXX Old template; want to expunge it eventually. */
- DERTemplate SECAlgorithmIDTemplate[] = {
- { DER_SEQUENCE,
- 0, NULL, sizeof(SECAlgorithmID) },
- { DER_OBJECT_ID,
- offsetof(SECAlgorithmID,algorithm), },
- { DER_OPTIONAL | DER_ANY,
- offsetof(SECAlgorithmID,parameters), },
- { 0, }
- };
- const SEC_ASN1Template SECOID_AlgorithmIDTemplate[] = {
- { SEC_ASN1_SEQUENCE,
- 0, NULL, sizeof(SECAlgorithmID) },
- { SEC_ASN1_OBJECT_ID,
- offsetof(SECAlgorithmID,algorithm), },
- { SEC_ASN1_OPTIONAL | SEC_ASN1_ANY,
- offsetof(SECAlgorithmID,parameters), },
- { 0, }
- };
- SECOidTag
- SECOID_GetAlgorithmTag(SECAlgorithmID *id)
- {
- if (id == NULL || id->algorithm.data == NULL)
- return SEC_OID_UNKNOWN;
- return SECOID_FindOIDTag (&(id->algorithm));
- }
- SECStatus
- SECOID_SetAlgorithmID(PRArenaPool *arena, SECAlgorithmID *id, SECOidTag which,
- SECItem *params)
- {
- SECOidData *oiddata;
- PRBool add_null_param;
- oiddata = SECOID_FindOIDByTag(which);
- if ( !oiddata ) {
- PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
- return SECFailure;
- }
- if (SECITEM_CopyItem(arena, &id->algorithm, &oiddata->oid))
- return SECFailure;
- switch (which) {
- case SEC_OID_MD2:
- case SEC_OID_MD4:
- case SEC_OID_MD5:
- case SEC_OID_SHA1:
- case SEC_OID_PKCS1_RSA_ENCRYPTION:
- case SEC_OID_PKCS1_MD2_WITH_RSA_ENCRYPTION:
- case SEC_OID_PKCS1_MD4_WITH_RSA_ENCRYPTION:
- case SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION:
- case SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION:
- add_null_param = PR_TRUE;
- break;
- default:
- add_null_param = PR_FALSE;
- break;
- }
- if (params) {
- /*
- * I am specifically *not* enforcing the following assertion
- * (by following it up with an error and a return of failure)
- * because I do not want to introduce any change in the current
- * behavior. But I do want for us to notice if the following is
- * ever true, because I do not think it should be so and probably
- * signifies an error/bug somewhere.
- */
- PORT_Assert(!add_null_param || (params->len == 2
- && params->data[0] == SEC_ASN1_NULL
- && params->data[1] == 0));
- if (SECITEM_CopyItem(arena, &id->parameters, params)) {
- return SECFailure;
- }
- } else {
- /*
- * Again, this is not considered an error. But if we assume
- * that nobody tries to set the parameters field themselves
- * (but always uses this routine to do that), then we should
- * not hit the following assertion. Unless they forgot to zero
- * the structure, which could also be a bad (and wrong) thing.
- */
- PORT_Assert(id->parameters.data == NULL);
- if (add_null_param) {
- (void) SECITEM_AllocItem(arena, &id->parameters, 2);
- if (id->parameters.data == NULL) {
- return SECFailure;
- }
- id->parameters.data[0] = SEC_ASN1_NULL;
- id->parameters.data[1] = 0;
- }
- }
- return SECSuccess;
- }
- SECStatus
- SECOID_CopyAlgorithmID(PRArenaPool *arena, SECAlgorithmID *to, SECAlgorithmID *from)
- {
- SECStatus rv;
- rv = SECITEM_CopyItem(arena, &to->algorithm, &from->algorithm);
- if (rv) return rv;
- rv = SECITEM_CopyItem(arena, &to->parameters, &from->parameters);
- return rv;
- }
- void SECOID_DestroyAlgorithmID(SECAlgorithmID *algid, PRBool freeit)
- {
- SECITEM_FreeItem(&algid->parameters, PR_FALSE);
- SECITEM_FreeItem(&algid->algorithm, PR_FALSE);
- if(freeit == PR_TRUE)
- PORT_Free(algid);
- }
- SECComparison
- SECOID_CompareAlgorithmID(SECAlgorithmID *a, SECAlgorithmID *b)
- {
- SECComparison rv;
- rv = SECITEM_CompareItem(&a->algorithm, &b->algorithm);
- if (rv) return rv;
- rv = SECITEM_CompareItem(&a->parameters, &b->parameters);
- return rv;
- }