pqgutil.c
上传用户:lyxiangda
上传日期:2007-01-12
资源大小:3042k
文件大小:9k
- /*
- * 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 "pqgutil.h"
- #include "prerror.h"
- #include "secitem.h"
- #define PQG_DEFAULT_CHUNKSIZE 2048 /* bytes */
- /**************************************************************************
- * Return a pointer to a new PQGParams struct that is a duplicate of *
- * the one passed as an argument. *
- * Return NULL on failure, or if NULL was passed in. *
- * *
- **************************************************************************/
- PQGParams *
- PQG_DupParams(const PQGParams *src)
- {
- PRArenaPool *arena;
- PQGParams *dest;
- SECStatus status;
- if (src == NULL) {
- PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
- return NULL;
- }
- arena = PORT_NewArena(PQG_DEFAULT_CHUNKSIZE);
- if (arena == NULL)
- goto loser;
- dest = (PQGParams*)PORT_ArenaZAlloc(arena, sizeof(PQGParams));
- if (dest == NULL)
- goto loser;
- dest->arena = arena;
- status = SECITEM_CopyItem(arena, &dest->prime, &src->prime);
- if (status != SECSuccess)
- goto loser;
- status = SECITEM_CopyItem(arena, &dest->subPrime, &src->subPrime);
- if (status != SECSuccess)
- goto loser;
- status = SECITEM_CopyItem(arena, &dest->base, &src->base);
- if (status != SECSuccess)
- goto loser;
- return dest;
- loser:
- if (arena != NULL)
- PORT_FreeArena(arena, PR_FALSE);
- return NULL;
- }
- /**************************************************************************
- * Return a pointer to a new PQGParams struct that is constructed from *
- * copies of the arguments passed in. *
- * Return NULL on failure. *
- **************************************************************************/
- PQGParams *
- PQG_NewParams(const SECItem * prime, const SECItem * subPrime,
- const SECItem * base)
- {
- PQGParams * dest;
- PQGParams src;
- src.arena = NULL;
- src.prime = *prime;
- src.subPrime = *subPrime;
- src.base = *base;
- dest = PQG_DupParams(&src);
- return dest;
- }
- /**************************************************************************
- * Fills in caller's "prime" SECItem with the prime value in params.
- * Contents can be freed by calling SECITEM_FreeItem(prime, PR_FALSE);
- **************************************************************************/
- SECStatus
- PQG_GetPrimeFromParams(const PQGParams *params, SECItem * prime)
- {
- return SECITEM_CopyItem(NULL, prime, ¶ms->prime);
- }
- /**************************************************************************
- * Fills in caller's "subPrime" SECItem with the prime value in params.
- * Contents can be freed by calling SECITEM_FreeItem(subPrime, PR_FALSE);
- **************************************************************************/
- SECStatus
- PQG_GetSubPrimeFromParams(const PQGParams *params, SECItem * subPrime)
- {
- return SECITEM_CopyItem(NULL, subPrime, ¶ms->subPrime);
- }
- /**************************************************************************
- * Fills in caller's "base" SECItem with the base value in params.
- * Contents can be freed by calling SECITEM_FreeItem(base, PR_FALSE);
- **************************************************************************/
- SECStatus
- PQG_GetBaseFromParams(const PQGParams *params, SECItem * base)
- {
- return SECITEM_CopyItem(NULL, base, ¶ms->base);
- }
- /**************************************************************************
- * Free the PQGParams struct and the things it points to. *
- **************************************************************************/
- void
- PQG_DestroyParams(PQGParams *params)
- {
- if (params == NULL)
- return;
- if (params->arena != NULL) {
- PORT_FreeArena(params->arena, PR_FALSE); /* don't zero it */
- } else {
- SECITEM_FreeItem(¶ms->prime, PR_FALSE); /* don't free prime */
- SECITEM_FreeItem(¶ms->subPrime, PR_FALSE); /* don't free subPrime */
- SECITEM_FreeItem(¶ms->base, PR_FALSE); /* don't free base */
- PORT_Free(params);
- }
- }
- /**************************************************************************
- * Return a pointer to a new PQGVerify struct that is a duplicate of *
- * the one passed as an argument. *
- * Return NULL on failure, or if NULL was passed in. *
- **************************************************************************/
- PQGVerify *
- PQG_DupVerify(const PQGVerify *src)
- {
- PRArenaPool *arena;
- PQGVerify * dest;
- SECStatus status;
- if (src == NULL) {
- PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
- return NULL;
- }
- arena = PORT_NewArena(PQG_DEFAULT_CHUNKSIZE);
- if (arena == NULL)
- goto loser;
- dest = (PQGVerify*)PORT_ArenaZAlloc(arena, sizeof(PQGVerify));
- if (dest == NULL)
- goto loser;
- dest->arena = arena;
- dest->counter = src->counter;
- status = SECITEM_CopyItem(arena, &dest->seed, &src->seed);
- if (status != SECSuccess)
- goto loser;
- status = SECITEM_CopyItem(arena, &dest->h, &src->h);
- if (status != SECSuccess)
- goto loser;
- return dest;
- loser:
- if (arena != NULL)
- PORT_FreeArena(arena, PR_FALSE);
- return NULL;
- }
- /**************************************************************************
- * Return a pointer to a new PQGVerify struct that is constructed from *
- * copies of the arguments passed in. *
- * Return NULL on failure. *
- **************************************************************************/
- PQGVerify *
- PQG_NewVerify(unsigned int counter, const SECItem * seed, const SECItem * h)
- {
- PQGVerify * dest;
- PQGVerify src;
- src.arena = NULL;
- src.counter = counter;
- src.seed = *seed;
- src.h = *h;
- dest = PQG_DupVerify(&src);
- return dest;
- }
- /**************************************************************************
- * Returns the "counter" value from the PQGVerify.
- **************************************************************************/
- unsigned int
- PQG_GetCounterFromVerify(const PQGVerify *verify)
- {
- return verify->counter;
- }
- /**************************************************************************
- * Fills in caller's "seed" SECItem with the seed value in verify.
- * Contents can be freed by calling SECITEM_FreeItem(seed, PR_FALSE);
- **************************************************************************/
- SECStatus
- PQG_GetSeedFromVerify(const PQGVerify *verify, SECItem * seed)
- {
- return SECITEM_CopyItem(NULL, seed, &verify->seed);
- }
- /**************************************************************************
- * Fills in caller's "h" SECItem with the h value in verify.
- * Contents can be freed by calling SECITEM_FreeItem(h, PR_FALSE);
- **************************************************************************/
- SECStatus
- PQG_GetHFromVerify(const PQGVerify *verify, SECItem * h)
- {
- return SECITEM_CopyItem(NULL, h, &verify->h);
- }
- /**************************************************************************
- * Free the PQGVerify struct and the things it points to. *
- **************************************************************************/
- void
- PQG_DestroyVerify(PQGVerify *vfy)
- {
- if (vfy == NULL)
- return;
- if (vfy->arena != NULL) {
- PORT_FreeArena(vfy->arena, PR_FALSE); /* don't zero it */
- } else {
- SECITEM_FreeItem(&vfy->seed, PR_FALSE); /* don't free seed */
- SECITEM_FreeItem(&vfy->h, PR_FALSE); /* don't free h */
- PORT_Free(vfy);
- }
- }