cmmfchal.c
上传用户:lyxiangda
上传日期:2007-01-12
资源大小:3042k
文件大小:10k
- /* -*- Mode: C; tab-width: 8 -*-*/
- /*
- * 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 "cmmf.h"
- #include "cmmfi.h"
- #include "sechash.h"
- #include "genname.h"
- #include "pk11func.h"
- #include "cert.h"
- #include "secitem.h"
- #include "secmod.h"
- #include "secmodi.h"
- #include "keyhi.h"
- static SECStatus
- cmmf_create_witness_and_challenge(PRArenaPool *poolp,
- CMMFChallenge *challenge,
- long inRandom,
- SECItem *senderDER,
- SECKEYPublicKey *inPubKey,
- void *passwdArg)
- {
- SECItem *encodedRandNum;
- SECItem encodedRandStr = {siBuffer, NULL, 0};
- SECItem encryptBlock = {siBuffer, NULL, 0};
- SECItem *dummy;
- unsigned char *randHash, *senderHash, *encChal=NULL;
- unsigned modulusLen = 0;
- SECStatus rv = SECFailure;
- CMMFRand randStr= { {siBuffer, NULL, 0}, {siBuffer, NULL, 0}};
- PK11SlotInfo *slot;
- PK11SymKey *symKey = NULL;
- CK_OBJECT_HANDLE id;
- CERTSubjectPublicKeyInfo *spki = NULL;
-
- encodedRandNum = SEC_ASN1EncodeInteger(poolp, &challenge->randomNumber,
- inRandom);
- encodedRandNum = &challenge->randomNumber;
- randHash = PORT_ArenaNewArray(poolp, unsigned char, SHA1_LENGTH);
- senderHash = PORT_ArenaNewArray(poolp, unsigned char, SHA1_LENGTH);
- if (randHash == NULL) {
- goto loser;
- }
- rv = PK11_HashBuf(SEC_OID_SHA1, randHash, encodedRandNum->data,
- (uint32)encodedRandNum->len);
- if (rv != SECSuccess) {
- goto loser;
- }
- rv = PK11_HashBuf(SEC_OID_SHA1, senderHash, senderDER->data,
- (uint32)senderDER->len);
- if (rv != SECSuccess) {
- goto loser;
- }
- challenge->witness.data = randHash;
- challenge->witness.len = SHA1_LENGTH;
- randStr.integer = *encodedRandNum;
- randStr.senderHash.data = senderHash;
- randStr.senderHash.len = SHA1_LENGTH;
- dummy = SEC_ASN1EncodeItem(NULL, &encodedRandStr, &randStr,
- CMMFRandTemplate);
- if (dummy != &encodedRandStr) {
- rv = SECFailure;
- goto loser;
- }
- /* XXXX Now I have to encrypt encodedRandStr and stash it away. */
- modulusLen = SECKEY_PublicKeyStrength(inPubKey);
- encChal = PORT_ArenaNewArray(poolp, unsigned char, modulusLen);
- if (encChal == NULL) {
- rv = SECFailure;
- goto loser;
- }
- slot =PK11_GetBestSlot(CKM_RSA_PKCS, passwdArg);
- if (slot == NULL) {
- rv = SECFailure;
- goto loser;
- }
- id = PK11_ImportPublicKey(slot, inPubKey, PR_FALSE);
- /* In order to properly encrypt the data, we import as a symmetric
- * key, and then wrap that key. That in essence encrypts the data.
- * This is the method recommended in the PK11 world in order
- * to prevent threading issues as well as breaking any other semantics
- * the PK11 libraries depend on.
- */
- symKey = PK11_ImportSymKey(slot, CKM_RSA_PKCS, PK11_OriginGenerated,
- CKA_VALUE, &encodedRandStr, passwdArg);
- if (symKey == NULL) {
- rv = SECFailure;
- goto loser;
- }
- challenge->challenge.data = encChal;
- challenge->challenge.len = modulusLen;
- rv = PK11_PubWrapSymKey(CKM_RSA_PKCS, inPubKey, symKey,
- &challenge->challenge);
- PK11_FreeSlot(slot);
- if (rv != SECSuccess) {
- goto loser;
- }
- rv = SECITEM_CopyItem(poolp, &challenge->senderDER, senderDER);
- crmf_get_public_value(inPubKey, &challenge->key);
- /* Fall through */
- loser:
- if (spki != NULL) {
- SECKEY_DestroySubjectPublicKeyInfo(spki);
- }
- if (encodedRandStr.data != NULL) {
- PORT_Free(encodedRandStr.data);
- }
- if (encodedRandNum != NULL) {
- SECITEM_FreeItem(encodedRandNum, PR_TRUE);
- }
- if (symKey != NULL) {
- PK11_FreeSymKey(symKey);
- }
- return rv;
- }
- static SECStatus
- cmmf_create_first_challenge(CMMFPOPODecKeyChallContent *challContent,
- long inRandom,
- SECItem *senderDER,
- SECKEYPublicKey *inPubKey,
- void *passwdArg)
- {
- SECOidData *oidData;
- CMMFChallenge *challenge;
- SECAlgorithmID *algId;
- PRArenaPool *poolp;
- SECStatus rv;
- oidData = SECOID_FindOIDByTag(SEC_OID_SHA1);
- if (oidData == NULL) {
- return SECFailure;
- }
- poolp = challContent->poolp;
- challenge = PORT_ArenaZNew(poolp, CMMFChallenge);
- if (challenge == NULL) {
- return SECFailure;
- }
- algId = challenge->owf = PORT_ArenaZNew(poolp, SECAlgorithmID);
- if (algId == NULL) {
- return SECFailure;
- }
- rv = SECITEM_CopyItem(poolp, &algId->algorithm, &oidData->oid);
- if (rv != SECSuccess) {
- return SECFailure;
- }
- rv = cmmf_create_witness_and_challenge(poolp, challenge, inRandom,
- senderDER, inPubKey, passwdArg);
- challContent->challenges[0] = (rv == SECSuccess) ? challenge : NULL;
- challContent->numChallenges++;
- return rv ;
- }
- CMMFPOPODecKeyChallContent*
- CMMF_CreatePOPODecKeyChallContent (void)
- {
- PRArenaPool *poolp;
- CMMFPOPODecKeyChallContent *challContent;
- poolp = PORT_NewArena(CRMF_DEFAULT_ARENA_SIZE);
- if (poolp == NULL) {
- return NULL;
- }
- challContent = PORT_ArenaZNew(poolp, CMMFPOPODecKeyChallContent);
- if (challContent == NULL) {
- PORT_FreeArena(poolp, PR_FALSE);
- return NULL;
- }
- challContent->poolp = poolp;
- return challContent;
- }
- SECStatus
- CMMF_POPODecKeyChallContentSetNextChallenge
- (CMMFPOPODecKeyChallContent *inDecKeyChall,
- long inRandom,
- CERTGeneralName *inSender,
- SECKEYPublicKey *inPubKey,
- void *passwdArg)
- {
- CMMFChallenge *curChallenge;
- PRArenaPool *genNamePool = NULL, *poolp;
- SECStatus rv;
- SECItem *genNameDER;
- void *mark;
- SECItem senderDER = {siBuffer, NULL, 0};
- PORT_Assert (inDecKeyChall != NULL &&
- inSender != NULL &&
- inPubKey != NULL);
- if (inDecKeyChall == NULL ||
- inSender == NULL || inPubKey == NULL) {
- return SECFailure;
- }
- poolp = inDecKeyChall->poolp;
- mark = PORT_ArenaMark(poolp);
- genNamePool = PORT_NewArena(CRMF_DEFAULT_ARENA_SIZE);
- genNameDER = cert_EncodeGeneralName(inSender, NULL, genNamePool);
- if (genNameDER == NULL) {
- rv = SECFailure;
- goto loser;
- }
- if (inDecKeyChall->challenges == NULL) {
- inDecKeyChall->challenges =
- PORT_ArenaZNewArray(poolp, CMMFChallenge*,(CMMF_MAX_CHALLENGES+1));
- inDecKeyChall->numAllocated = CMMF_MAX_CHALLENGES;
- }
- if (inDecKeyChall->numChallenges >= inDecKeyChall->numAllocated) {
- rv = SECFailure;
- goto loser;
- }
- if (inDecKeyChall->numChallenges == 0) {
- rv = cmmf_create_first_challenge(inDecKeyChall, inRandom,
- genNameDER, inPubKey, passwdArg);
- } else {
- curChallenge = PORT_ArenaZNew(poolp, CMMFChallenge);
- if (curChallenge == NULL) {
- rv = SECFailure;
- goto loser;
- }
- rv = cmmf_create_witness_and_challenge(poolp, curChallenge, inRandom,
- genNameDER, inPubKey,
- passwdArg);
- if (rv == SECSuccess) {
- inDecKeyChall->challenges[inDecKeyChall->numChallenges] =
- curChallenge;
- inDecKeyChall->numChallenges++;
- }
- }
- if (rv != SECSuccess) {
- goto loser;
- }
- PORT_ArenaUnmark(poolp, mark);
- PORT_FreeArena(genNamePool, PR_FALSE);
- return SECSuccess;
- loser:
- PORT_ArenaRelease(poolp, mark);
- if (genNamePool != NULL) {
- PORT_FreeArena(genNamePool, PR_FALSE);
- }
- PORT_Assert(rv != SECSuccess);
- return rv;
- }
- SECStatus
- CMMF_DestroyPOPODecKeyRespContent(CMMFPOPODecKeyRespContent *inDecKeyResp)
- {
- PORT_Assert(inDecKeyResp != NULL);
- if (inDecKeyResp != NULL && inDecKeyResp->poolp != NULL) {
- PORT_FreeArena(inDecKeyResp->poolp, PR_FALSE);
- }
- return SECSuccess;
- }
- int
- CMMF_POPODecKeyRespContentGetNumResponses(CMMFPOPODecKeyRespContent *inRespCont)
- {
- int numResponses = 0;
- PORT_Assert(inRespCont != NULL);
- if (inRespCont == NULL) {
- return 0;
- }
- while (inRespCont->responses[numResponses] != NULL) {
- numResponses ++;
- }
- return numResponses;
- }
- SECStatus
- CMMF_POPODecKeyRespContentGetResponse (CMMFPOPODecKeyRespContent *inRespCont,
- int inIndex,
- long *inDest)
- {
- PORT_Assert(inRespCont != NULL);
-
- if (inRespCont == NULL || inIndex < 0 ||
- inIndex >= CMMF_POPODecKeyRespContentGetNumResponses(inRespCont)) {
- return SECFailure;
- }
- *inDest = DER_GetInteger(inRespCont->responses[inIndex]);
- return (*inDest == -1) ? SECFailure : SECSuccess;
- }