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gecko/security/nss/lib/pk11wrap/pk11pbe.c
Kai Engert 2b43284096 Bug 486182, Land NSS 3.12.3 final in mozilla-central 
r=nelson
2009-04-07 03:36:45 +02:00

1461 lines
40 KiB
C
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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* 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 the Initial Developer are Copyright (C) 1994-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "plarena.h"
#include "seccomon.h"
#include "secitem.h"
#include "secport.h"
#include "hasht.h"
#include "pkcs11t.h"
#include "sechash.h"
#include "secasn1.h"
#include "secder.h"
#include "secoid.h"
#include "secerr.h"
#include "secmod.h"
#include "pk11func.h"
#include "secpkcs5.h"
#include "secmodi.h"
#include "secmodti.h"
#include "pkcs11.h"
#include "pk11func.h"
#include "secitem.h"
#include "key.h"
typedef struct SEC_PKCS5PBEParameterStr SEC_PKCS5PBEParameter;
struct SEC_PKCS5PBEParameterStr {
PRArenaPool *poolp;
SECItem salt; /* octet string */
SECItem iteration; /* integer */
SECItem keyLength; /* PKCS5v2 only */
SECAlgorithmID *pPrfAlgId; /* PKCS5v2 only */
SECAlgorithmID prfAlgId; /* PKCS5v2 only */
};
/* PKCS5 V2 has an algorithm ID for the encryption and for
* the key generation. This is valid for SEC_OID_PKCS5_PBES2
* and SEC_OID_PKCS5_PBMAC1
*/
struct sec_pkcs5V2ParameterStr {
PRArenaPool *poolp;
SECAlgorithmID pbeAlgId; /* real pbe algorithms */
SECAlgorithmID cipherAlgId; /* encryption/mac */
};
typedef struct sec_pkcs5V2ParameterStr sec_pkcs5V2Parameter;
/* template for PKCS 5 PBE Parameter. This template has been expanded
* based upon the additions in PKCS 12. This should eventually be moved
* if RSA updates PKCS 5.
*/
const SEC_ASN1Template SEC_PKCS5PBEParameterTemplate[] =
{
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(SEC_PKCS5PBEParameter) },
{ SEC_ASN1_OCTET_STRING,
offsetof(SEC_PKCS5PBEParameter, salt) },
{ SEC_ASN1_INTEGER,
offsetof(SEC_PKCS5PBEParameter, iteration) },
{ 0 }
};
const SEC_ASN1Template SEC_V2PKCS12PBEParameterTemplate[] =
{
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SEC_PKCS5PBEParameter) },
{ SEC_ASN1_OCTET_STRING, offsetof(SEC_PKCS5PBEParameter, salt) },
{ SEC_ASN1_INTEGER, offsetof(SEC_PKCS5PBEParameter, iteration) },
{ 0 }
};
SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
/* SECOID_PKCS5_PBKDF2 */
const SEC_ASN1Template SEC_PKCS5V2PBEParameterTemplate[] =
{
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SEC_PKCS5PBEParameter) },
/* This is really a choice, but since we only understand this
* choice, just inline it */
{ SEC_ASN1_OCTET_STRING, offsetof(SEC_PKCS5PBEParameter, salt) },
{ SEC_ASN1_INTEGER, offsetof(SEC_PKCS5PBEParameter, iteration) },
{ SEC_ASN1_INTEGER|SEC_ASN1_OPTIONAL,
offsetof(SEC_PKCS5PBEParameter, keyLength) },
{ SEC_ASN1_POINTER | SEC_ASN1_XTRN | SEC_ASN1_OPTIONAL,
offsetof(SEC_PKCS5PBEParameter, pPrfAlgId),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ 0 }
};
/* SEC_OID_PKCS5_PBES2, SEC_OID_PKCS5_PBMAC1 */
const SEC_ASN1Template SEC_PKCS5V2ParameterTemplate[] =
{
{ SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SEC_PKCS5PBEParameter) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(sec_pkcs5V2Parameter, pbeAlgId),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ SEC_ASN1_INLINE | SEC_ASN1_XTRN,
offsetof(sec_pkcs5V2Parameter, cipherAlgId),
SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
{ 0 }
};
/*
* maps a PBE algorithm to a crypto algorithm. for PKCS12 and PKCS5v1
* for PKCS5v2 it returns SEC_OID_PKCS5_PBKDF2.
*/
SECOidTag
sec_pkcs5GetCryptoFromAlgTag(SECOidTag algorithm)
{
switch(algorithm)
{
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_3KEY_TRIPLE_DES_CBC:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_2KEY_TRIPLE_DES_CBC:
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_TRIPLE_DES_CBC:
return SEC_OID_DES_EDE3_CBC;
case SEC_OID_PKCS5_PBE_WITH_SHA1_AND_DES_CBC:
case SEC_OID_PKCS5_PBE_WITH_MD5_AND_DES_CBC:
case SEC_OID_PKCS5_PBE_WITH_MD2_AND_DES_CBC:
return SEC_OID_DES_CBC;
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_40_BIT_RC2_CBC:
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_128_BIT_RC2_CBC:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC2_CBC:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC2_CBC:
return SEC_OID_RC2_CBC;
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_40_BIT_RC4:
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_128_BIT_RC4:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC4:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC4:
return SEC_OID_RC4;
case SEC_OID_PKCS5_PBKDF2:
case SEC_OID_PKCS5_PBES2:
case SEC_OID_PKCS5_PBMAC1:
return SEC_OID_PKCS5_PBKDF2;
default:
break;
}
return SEC_OID_UNKNOWN;
}
/*
* get a new PKCS5 V2 Parameter from the algorithm id.
* if arena is passed in, use it, otherwise create a new arena.
*/
sec_pkcs5V2Parameter *
sec_pkcs5_v2_get_v2_param(PRArenaPool *arena, SECAlgorithmID *algid)
{
PRArenaPool *localArena = NULL;
sec_pkcs5V2Parameter *pbeV2_param;
SECStatus rv;
if (arena == NULL) {
localArena = arena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if (arena == NULL) {
return NULL;
}
}
pbeV2_param = PORT_ArenaZNew(arena, sec_pkcs5V2Parameter);
if (pbeV2_param == NULL) {
goto loser;
}
rv = SEC_ASN1DecodeItem(arena, pbeV2_param,
SEC_PKCS5V2ParameterTemplate, &algid->parameters);
if (rv == SECFailure) {
goto loser;
}
pbeV2_param->poolp = arena;
return pbeV2_param;
loser:
if (localArena) {
PORT_FreeArena(arena, PR_FALSE);
}
return NULL;
}
void
sec_pkcs5_v2_destroy_v2_param(sec_pkcs5V2Parameter *param)
{
if (param && param->poolp) {
PORT_FreeArena(param->poolp, PR_TRUE);
}
}
/* maps crypto algorithm from PBE algorithm.
*/
SECOidTag
SEC_PKCS5GetCryptoAlgorithm(SECAlgorithmID *algid)
{
SECOidTag pbeAlg;
SECOidTag cipherAlg;
if(algid == NULL)
return SEC_OID_UNKNOWN;
pbeAlg = SECOID_GetAlgorithmTag(algid);
cipherAlg = sec_pkcs5GetCryptoFromAlgTag(pbeAlg);
if ((cipherAlg == SEC_OID_PKCS5_PBKDF2) &&
(pbeAlg != SEC_OID_PKCS5_PBKDF2)) {
sec_pkcs5V2Parameter *pbeV2_param;
cipherAlg = SEC_OID_UNKNOWN;
pbeV2_param = sec_pkcs5_v2_get_v2_param(NULL, algid);
if (pbeV2_param != NULL) {
cipherAlg = SECOID_GetAlgorithmTag(&pbeV2_param->cipherAlgId);
sec_pkcs5_v2_destroy_v2_param(pbeV2_param);
}
}
return cipherAlg;
}
/* check to see if an oid is a pbe algorithm
*/
PRBool
SEC_PKCS5IsAlgorithmPBEAlg(SECAlgorithmID *algid)
{
return (PRBool)(SEC_PKCS5GetCryptoAlgorithm(algid) != SEC_OID_UNKNOWN);
}
PRBool
SEC_PKCS5IsAlgorithmPBEAlgTag(SECOidTag algtag)
{
return (PRBool)(sec_pkcs5GetCryptoFromAlgTag(algtag) != SEC_OID_UNKNOWN);
}
/*
* find the most appropriate PKCS5v2 overall oid tag from a regular
* cipher/hash algorithm tag.
*/
static SECOidTag
sec_pkcs5v2_get_pbe(SECOidTag algTag)
{
/* if it's a valid hash oid... */
if (HASH_GetHashOidTagByHMACOidTag(algTag) != SEC_OID_UNKNOWN) {
/* use the MAC tag */
return SEC_OID_PKCS5_PBMAC1;
}
if (HASH_GetHashTypeByOidTag(algTag) != HASH_AlgNULL) {
/* eliminate Hash algorithms */
return SEC_OID_UNKNOWN;
}
if (PK11_AlgtagToMechanism(algTag) != CKM_INVALID_MECHANISM) {
/* it's not a hash, if it has a PKCS #11 mechanism associated
* with it, assume it's a cipher. (NOTE this will generate
* some false positives). */
return SEC_OID_PKCS5_PBES2;
}
return SEC_OID_UNKNOWN;
}
/*
* maps PBE algorithm from crypto algorithm, assumes SHA1 hashing.
* input keyLen in bits.
*/
SECOidTag
SEC_PKCS5GetPBEAlgorithm(SECOidTag algTag, int keyLen)
{
switch(algTag)
{
case SEC_OID_DES_EDE3_CBC:
switch(keyLen) {
case 168:
case 192:
case 0:
return SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_3KEY_TRIPLE_DES_CBC;
case 128:
case 92:
return SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_2KEY_TRIPLE_DES_CBC;
default:
break;
}
break;
case SEC_OID_DES_CBC:
return SEC_OID_PKCS5_PBE_WITH_SHA1_AND_DES_CBC;
case SEC_OID_RC2_CBC:
switch(keyLen) {
case 40:
return SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC2_CBC;
case 128:
case 0:
return SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC2_CBC;
default:
break;
}
break;
case SEC_OID_RC4:
switch(keyLen) {
case 40:
return SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC4;
case 128:
case 0:
return SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC4;
default:
break;
}
break;
default:
return sec_pkcs5v2_get_pbe(algTag);
}
return SEC_OID_UNKNOWN;
}
/*
* get the key length in bytes from a PKCS5 PBE
*/
int
sec_pkcs5v2_key_length(SECAlgorithmID *algid)
{
SECOidTag algorithm;
PRArenaPool *arena = NULL;
SEC_PKCS5PBEParameter p5_param;
SECStatus rv;
int length = -1;
algorithm = SECOID_GetAlgorithmTag(algid);
/* sanity check, they should all be PBKDF2 here */
if (algorithm != SEC_OID_PKCS5_PBKDF2) {
return -1;
}
arena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if (arena == NULL) {
goto loser;
}
PORT_Memset(&p5_param, 0, sizeof(p5_param));
rv = SEC_ASN1DecodeItem(arena,&p5_param,
SEC_PKCS5V2PBEParameterTemplate, &algid->parameters);
if (rv != SECSuccess) {
goto loser;
}
if (p5_param.keyLength.data != NULL) {
length = DER_GetInteger(&p5_param.keyLength);
}
loser:
if (arena) {
PORT_FreeArena(arena, PR_FALSE);
}
return length;
}
/*
* get the key length in bytes needed for the PBE algorithm
*/
int
SEC_PKCS5GetKeyLength(SECAlgorithmID *algid)
{
SECOidTag algorithm;
if(algid == NULL)
return SEC_OID_UNKNOWN;
algorithm = SECOID_GetAlgorithmTag(algid);
switch(algorithm)
{
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_3KEY_TRIPLE_DES_CBC:
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_TRIPLE_DES_CBC:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_2KEY_TRIPLE_DES_CBC:
return 24;
case SEC_OID_PKCS5_PBE_WITH_MD2_AND_DES_CBC:
case SEC_OID_PKCS5_PBE_WITH_SHA1_AND_DES_CBC:
case SEC_OID_PKCS5_PBE_WITH_MD5_AND_DES_CBC:
return 8;
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_40_BIT_RC2_CBC:
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_40_BIT_RC4:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC4:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC2_CBC:
return 5;
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_128_BIT_RC2_CBC:
case SEC_OID_PKCS12_PBE_WITH_SHA1_AND_128_BIT_RC4:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC2_CBC:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC4:
return 16;
case SEC_OID_PKCS5_PBKDF2:
return sec_pkcs5v2_key_length(algid);
case SEC_OID_PKCS5_PBES2:
case SEC_OID_PKCS5_PBMAC1:
{
sec_pkcs5V2Parameter *pbeV2_param;
int length = -1;
pbeV2_param = sec_pkcs5_v2_get_v2_param(NULL, algid);
if (pbeV2_param != NULL) {
length = sec_pkcs5v2_key_length(&pbeV2_param->pbeAlgId);
sec_pkcs5_v2_destroy_v2_param(pbeV2_param);
}
return length;
}
default:
break;
}
return -1;
}
/* the PKCS12 V2 algorithms only encode the salt, there is no iteration
* count so we need a check for V2 algorithm parameters.
*/
static PRBool
sec_pkcs5_is_algorithm_v2_pkcs12_algorithm(SECOidTag algorithm)
{
switch(algorithm)
{
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC4:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC4:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_3KEY_TRIPLE_DES_CBC:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_2KEY_TRIPLE_DES_CBC:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_128_BIT_RC2_CBC:
case SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_40_BIT_RC2_CBC:
return PR_TRUE;
default:
break;
}
return PR_FALSE;
}
static PRBool
sec_pkcs5_is_algorithm_v2_pkcs5_algorithm(SECOidTag algorithm)
{
switch(algorithm)
{
case SEC_OID_PKCS5_PBES2:
case SEC_OID_PKCS5_PBMAC1:
case SEC_OID_PKCS5_PBKDF2:
return PR_TRUE;
default:
break;
}
return PR_FALSE;
}
/* destroy a pbe parameter. it assumes that the parameter was
* generated using the appropriate create function and therefor
* contains an arena pool.
*/
static void
sec_pkcs5_destroy_pbe_param(SEC_PKCS5PBEParameter *pbe_param)
{
if(pbe_param != NULL)
PORT_FreeArena(pbe_param->poolp, PR_TRUE);
}
/* creates a PBE parameter based on the PBE algorithm. the only required
* parameters are algorithm and interation. the return is a PBE parameter
* which conforms to PKCS 5 parameter unless an extended parameter is needed.
* this is primarily if keyLength and a variable key length algorithm are
* specified.
* salt - if null, a salt will be generated from random bytes.
* iteration - number of iterations to perform hashing.
* keyLength - only used in variable key length algorithms. if specified,
* should be in bytes.
* once a parameter is allocated, it should be destroyed calling
* sec_pkcs5_destroy_pbe_parameter or SEC_PKCS5DestroyPBEParameter.
*/
#define DEFAULT_SALT_LENGTH 16
static SEC_PKCS5PBEParameter *
sec_pkcs5_create_pbe_parameter(SECOidTag algorithm,
SECItem *salt,
int iteration,
int keyLength,
SECOidTag prfAlg)
{
PRArenaPool *poolp = NULL;
SEC_PKCS5PBEParameter *pbe_param = NULL;
SECStatus rv= SECSuccess;
void *dummy = NULL;
if(iteration < 0) {
return NULL;
}
poolp = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if(poolp == NULL)
return NULL;
pbe_param = (SEC_PKCS5PBEParameter *)PORT_ArenaZAlloc(poolp,
sizeof(SEC_PKCS5PBEParameter));
if(!pbe_param) {
PORT_FreeArena(poolp, PR_TRUE);
return NULL;
}
pbe_param->poolp = poolp;
rv = SECFailure;
if (salt && salt->data) {
rv = SECITEM_CopyItem(poolp, &pbe_param->salt, salt);
} else {
/* sigh, the old interface generated salt on the fly, so we have to
* preserve the semantics */
pbe_param->salt.len = DEFAULT_SALT_LENGTH;
pbe_param->salt.data = PORT_ArenaZAlloc(poolp,DEFAULT_SALT_LENGTH);
if (pbe_param->salt.data) {
rv = PK11_GenerateRandom(pbe_param->salt.data,DEFAULT_SALT_LENGTH);
}
}
if(rv != SECSuccess) {
PORT_FreeArena(poolp, PR_TRUE);
return NULL;
}
/* encode the integer */
dummy = SEC_ASN1EncodeInteger(poolp, &pbe_param->iteration,
iteration);
rv = (dummy) ? SECSuccess : SECFailure;
if(rv != SECSuccess) {
PORT_FreeArena(poolp, PR_FALSE);
return NULL;
}
/*
* for PKCS5 v2 Add the keylength and the prf
*/
if (algorithm == SEC_OID_PKCS5_PBKDF2) {
dummy = SEC_ASN1EncodeInteger(poolp, &pbe_param->keyLength,
keyLength);
rv = (dummy) ? SECSuccess : SECFailure;
if (rv != SECSuccess) {
PORT_FreeArena(poolp, PR_FALSE);
return NULL;
}
rv = SECOID_SetAlgorithmID(poolp, &pbe_param->prfAlgId, prfAlg, NULL);
if (rv != SECSuccess) {
PORT_FreeArena(poolp, PR_FALSE);
return NULL;
}
pbe_param->pPrfAlgId = &pbe_param->prfAlgId;
}
return pbe_param;
}
/* creates a algorithm ID containing the PBE algorithm and appropriate
* parameters. the required parameter is the algorithm. if salt is
* not specified, it is generated randomly.
*
* the returned SECAlgorithmID should be destroyed using
* SECOID_DestroyAlgorithmID
*/
SECAlgorithmID *
sec_pkcs5CreateAlgorithmID(SECOidTag algorithm,
SECOidTag cipherAlgorithm,
SECOidTag prfAlg,
SECOidTag *pPbeAlgorithm,
int keyLength,
SECItem *salt,
int iteration)
{
PRArenaPool *poolp = NULL;
SECAlgorithmID *algid, *ret_algid = NULL;
SECOidTag pbeAlgorithm = algorithm;
SECItem der_param;
void *dummy;
SECStatus rv = SECFailure;
SEC_PKCS5PBEParameter *pbe_param = NULL;
sec_pkcs5V2Parameter pbeV2_param;
if(iteration <= 0) {
return NULL;
}
poolp = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if(!poolp) {
goto loser;
}
if (!SEC_PKCS5IsAlgorithmPBEAlgTag(algorithm) ||
sec_pkcs5_is_algorithm_v2_pkcs5_algorithm(algorithm)) {
/* use PKCS 5 v2 */
SECItem *cipherParams;
/*
* if we ask for pkcs5 Algorithms directly, then the
* application needs to supply the cipher algorithm,
* otherwise we are implicitly using pkcs5 v2 and the
* passed in algorithm is the encryption algorithm.
*/
if (sec_pkcs5_is_algorithm_v2_pkcs5_algorithm(algorithm)) {
if (cipherAlgorithm == SEC_OID_UNKNOWN) {
goto loser;
}
} else {
cipherAlgorithm = algorithm;
/* force algorithm to be chosen below */
algorithm = SEC_OID_PKCS5_PBKDF2;
}
pbeAlgorithm = SEC_OID_PKCS5_PBKDF2;
/*
* 'algorithm' is the overall algorithm oid tag used to wrap the
* entire algoithm ID block. For PKCS5v1 and PKCS12, this
* algorithm OID has encoded in it both the PBE KDF function
* and the encryption algorithm. For PKCS 5v2, PBE KDF and
* encryption/macing oids are encoded as parameters in
* the algorithm ID block.
*
* Thus in PKCS5 v1 and PKCS12, this algorithm maps to a pkcs #11
* mechanism, where as in PKCS 5v2, this alogithm tag does not map
* directly to a PKCS #11 mechanim, instead the 2 oids in the
* algorithm ID block map the the actual PKCS #11 mechanism.
* gorithm is). We use choose this algorithm oid based on the
* cipherAlgorithm to determine what this should be (MAC1 or PBES2).
*/
if (algorithm == SEC_OID_PKCS5_PBKDF2) {
/* choose mac or pbes */
algorithm = sec_pkcs5v2_get_pbe(cipherAlgorithm);
}
/* set the PKCS5v2 specific parameters */
if (keyLength == 0) {
SECOidTag hashAlg = HASH_GetHashOidTagByHMACOidTag(cipherAlgorithm);
if (hashAlg != SEC_OID_UNKNOWN) {
keyLength = HASH_ResultLenByOidTag(hashAlg);
} else {
CK_MECHANISM_TYPE cryptoMech;
cryptoMech = PK11_AlgtagToMechanism(cipherAlgorithm);
if (cryptoMech == CKM_INVALID_MECHANISM) {
goto loser;
}
keyLength = PK11_GetMaxKeyLength(cryptoMech);
}
if (keyLength == 0) {
goto loser;
}
}
/* currently only SEC_OID_HMAC_SHA1 is defined */
if (prfAlg == SEC_OID_UNKNOWN) {
prfAlg = SEC_OID_HMAC_SHA1;
}
/* build the PKCS5v2 cipher algorithm id */
cipherParams = pk11_GenerateNewParamWithKeyLen(
PK11_AlgtagToMechanism(cipherAlgorithm), keyLength);
if (!cipherParams) {
goto loser;
}
PORT_Memset(&pbeV2_param, 0, sizeof (pbeV2_param));
rv = PK11_ParamToAlgid(cipherAlgorithm, cipherParams,
poolp, &pbeV2_param.cipherAlgId);
SECITEM_FreeItem(cipherParams, PR_TRUE);
if (rv != SECSuccess) {
goto loser;
}
}
/* generate the parameter */
pbe_param = sec_pkcs5_create_pbe_parameter(pbeAlgorithm, salt, iteration,
keyLength, prfAlg);
if(!pbe_param) {
goto loser;
}
/* generate the algorithm id */
algid = (SECAlgorithmID *)PORT_ArenaZAlloc(poolp, sizeof(SECAlgorithmID));
if(algid == NULL) {
goto loser;
}
der_param.data = NULL;
der_param.len = 0;
if (sec_pkcs5_is_algorithm_v2_pkcs5_algorithm(algorithm)) {
/* first encode the PBE algorithm ID */
dummy = SEC_ASN1EncodeItem(poolp, &der_param, pbe_param,
SEC_PKCS5V2PBEParameterTemplate);
if (dummy == NULL) {
goto loser;
}
rv = SECOID_SetAlgorithmID(poolp, &pbeV2_param.pbeAlgId,
pbeAlgorithm, &der_param);
if (rv != SECSuccess) {
goto loser;
}
/* now encode the Full PKCS 5 parameter */
der_param.data = NULL;
der_param.len = 0;
dummy = SEC_ASN1EncodeItem(poolp, &der_param, &pbeV2_param,
SEC_PKCS5V2ParameterTemplate);
} else if(!sec_pkcs5_is_algorithm_v2_pkcs12_algorithm(algorithm)) {
dummy = SEC_ASN1EncodeItem(poolp, &der_param, pbe_param,
SEC_PKCS5PBEParameterTemplate);
} else {
dummy = SEC_ASN1EncodeItem(poolp, &der_param, pbe_param,
SEC_V2PKCS12PBEParameterTemplate);
}
if (dummy == NULL) {
goto loser;
}
rv = SECOID_SetAlgorithmID(poolp, algid, algorithm, &der_param);
if (rv != SECSuccess) {
goto loser;
}
ret_algid = (SECAlgorithmID *)PORT_ZAlloc(sizeof(SECAlgorithmID));
if (ret_algid == NULL) {
goto loser;
}
rv = SECOID_CopyAlgorithmID(NULL, ret_algid, algid);
if (rv != SECSuccess) {
SECOID_DestroyAlgorithmID(ret_algid, PR_TRUE);
ret_algid = NULL;
} else if (pPbeAlgorithm) {
*pPbeAlgorithm = pbeAlgorithm;
}
loser:
if (poolp != NULL) {
PORT_FreeArena(poolp, PR_TRUE);
algid = NULL;
}
if (pbe_param) {
sec_pkcs5_destroy_pbe_param(pbe_param);
}
return ret_algid;
}
SECStatus
pbe_PK11AlgidToParam(SECAlgorithmID *algid,SECItem *mech)
{
SEC_PKCS5PBEParameter p5_param;
SECItem *salt = NULL;
SECOidTag algorithm = SECOID_GetAlgorithmTag(algid);
PRArenaPool *arena = NULL;
SECStatus rv = SECFailure;
unsigned char *paramData = NULL;
unsigned char *pSalt = NULL;
CK_ULONG iterations;
int paramLen = 0;
int iv_len;
arena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if (arena == NULL) {
goto loser;
}
/*
* decode the algid based on the pbe type
*/
PORT_Memset(&p5_param, 0, sizeof(p5_param));
if (sec_pkcs5_is_algorithm_v2_pkcs12_algorithm(algorithm)) {
iv_len = PK11_GetIVLength(PK11_AlgtagToMechanism(algorithm));
rv = SEC_ASN1DecodeItem(arena, &p5_param,
SEC_V2PKCS12PBEParameterTemplate, &algid->parameters);
} else if (algorithm == SEC_OID_PKCS5_PBKDF2) {
iv_len = 0;
rv = SEC_ASN1DecodeItem(arena,&p5_param,
SEC_PKCS5V2PBEParameterTemplate, &algid->parameters);
} else {
iv_len = PK11_GetIVLength(PK11_AlgtagToMechanism(algorithm));
rv = SEC_ASN1DecodeItem(arena,&p5_param,SEC_PKCS5PBEParameterTemplate,
&algid->parameters);
}
if (iv_len < 0) {
goto loser;
}
if (rv != SECSuccess) {
goto loser;
}
/* get salt */
salt = &p5_param.salt;
iterations = (CK_ULONG) DER_GetInteger(&p5_param.iteration);
/* allocate and fill in the PKCS #11 parameters
* based on the algorithm. */
if (algorithm == SEC_OID_PKCS5_PBKDF2) {
SECOidTag prfAlgTag;
CK_PKCS5_PBKD2_PARAMS *pbeV2_params =
(CK_PKCS5_PBKD2_PARAMS *)PORT_ZAlloc(
sizeof(CK_PKCS5_PBKD2_PARAMS)+ salt->len);
if (pbeV2_params == NULL) {
goto loser;
}
paramData = (unsigned char *)pbeV2_params;
paramLen = sizeof(CK_PKCS5_PBKD2_PARAMS);
/* set the prf */
prfAlgTag = SEC_OID_HMAC_SHA1;
if (p5_param.pPrfAlgId &&
p5_param.pPrfAlgId->algorithm.data != 0) {
prfAlgTag = SECOID_GetAlgorithmTag(p5_param.pPrfAlgId);
}
if (prfAlgTag == SEC_OID_HMAC_SHA1) {
pbeV2_params->prf = CKP_PKCS5_PBKD2_HMAC_SHA1;
} else {
/* only SHA1_HMAC is currently supported by PKCS #11 */
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
goto loser;
}
/* probably should fetch these from the prfAlgid */
pbeV2_params->pPrfData = NULL;
pbeV2_params->ulPrfDataLen = 0;
pbeV2_params->saltSource = CKZ_SALT_SPECIFIED;
pSalt = ((CK_CHAR_PTR) pbeV2_params)+sizeof(CK_PKCS5_PBKD2_PARAMS);
PORT_Memcpy(pSalt, salt->data, salt->len);
pbeV2_params->pSaltSourceData = pSalt;
pbeV2_params->ulSaltSourceDataLen = salt->len;
pbeV2_params->iterations = iterations;
} else {
CK_PBE_PARAMS *pbe_params = NULL;
pbe_params = (CK_PBE_PARAMS *)PORT_ZAlloc(sizeof(CK_PBE_PARAMS)+
salt->len+iv_len);
if (pbe_params == NULL) {
goto loser;
}
paramData = (unsigned char *)pbe_params;
paramLen = sizeof(CK_PBE_PARAMS);
pSalt = ((CK_CHAR_PTR) pbe_params)+sizeof(CK_PBE_PARAMS);
pbe_params->pSalt = pSalt;
PORT_Memcpy(pSalt, salt->data, salt->len);
pbe_params->ulSaltLen = salt->len;
if (iv_len) {
pbe_params->pInitVector =
((CK_CHAR_PTR) pbe_params)+ sizeof(CK_PBE_PARAMS)+salt->len;
}
pbe_params->ulIteration = iterations;
}
/* copy into the mechanism sec item */
mech->data = paramData;
mech->len = paramLen;
if (arena) {
PORT_FreeArena(arena,PR_TRUE);
}
return SECSuccess;
loser:
if (paramData) {
PORT_Free(paramData);
}
if (arena) {
PORT_FreeArena(arena,PR_TRUE);
}
return SECFailure;
}
/*
* public, deprecated, not valid for pkcs5 v2
*
* use PK11_CreatePBEV2AlgorithmID or PK11_CreatePBEAlgorithmID to create
* PBE algorithmID's directly.
*/
SECStatus
PBE_PK11ParamToAlgid(SECOidTag algTag, SECItem *param, PRArenaPool *arena,
SECAlgorithmID *algId)
{
CK_PBE_PARAMS *pbe_param;
SECItem pbeSalt;
SECAlgorithmID *pbeAlgID = NULL;
SECStatus rv;
if(!param || !algId) {
return SECFailure;
}
pbe_param = (CK_PBE_PARAMS *)param->data;
pbeSalt.data = (unsigned char *)pbe_param->pSalt;
pbeSalt.len = pbe_param->ulSaltLen;
pbeAlgID = sec_pkcs5CreateAlgorithmID(algTag, SEC_OID_UNKNOWN,
SEC_OID_UNKNOWN, NULL, 0, &pbeSalt, (int)pbe_param->ulIteration);
if(!pbeAlgID) {
return SECFailure;
}
rv = SECOID_CopyAlgorithmID(arena, algId, pbeAlgID);
SECOID_DestroyAlgorithmID(pbeAlgID, PR_TRUE);
return rv;
}
/*
* public, Deprecated, This function is only for binary compatibility with
* older applications. Does not support PKCS5v2.
*
* Applications should use PK11_PBEKeyGen() for keys and PK11_GetPBEIV() for
* iv values rather than generating PBE bits directly.
*/
PBEBitGenContext *
PBE_CreateContext(SECOidTag hashAlgorithm, PBEBitGenID bitGenPurpose,
SECItem *pwitem, SECItem *salt, unsigned int bitsNeeded,
unsigned int iterations)
{
SECItem *context = NULL;
SECItem mechItem;
CK_PBE_PARAMS pbe_params;
CK_MECHANISM_TYPE mechanism = CKM_INVALID_MECHANISM;
PK11SlotInfo *slot;
PK11SymKey *symKey = NULL;
unsigned char ivData[8];
/* use the purpose to select the low level keygen algorithm */
switch (bitGenPurpose) {
case pbeBitGenIntegrityKey:
switch (hashAlgorithm) {
case SEC_OID_SHA1:
mechanism = CKM_PBA_SHA1_WITH_SHA1_HMAC;
break;
case SEC_OID_MD2:
mechanism = CKM_NETSCAPE_PBE_MD2_HMAC_KEY_GEN;
break;
case SEC_OID_MD5:
mechanism = CKM_NETSCAPE_PBE_MD5_HMAC_KEY_GEN;
break;
default:
break;
}
break;
case pbeBitGenCipherIV:
if (bitsNeeded > 64) {
break;
}
if (hashAlgorithm != SEC_OID_SHA1) {
break;
}
mechanism = CKM_PBE_SHA1_DES3_EDE_CBC;
break;
case pbeBitGenCipherKey:
if (hashAlgorithm != SEC_OID_SHA1) {
break;
}
switch (bitsNeeded) {
case 40:
mechanism = CKM_PBE_SHA1_RC4_40;
break;
case 128:
mechanism = CKM_PBE_SHA1_RC4_128;
break;
default:
break;
}
case pbeBitGenIDNull:
break;
}
if (mechanism == CKM_INVALID_MECHANISM) {
/* we should set an error, but this is a deprecated function, and
* we are keeping bug for bug compatibility;)... */
return NULL;
}
pbe_params.pInitVector = ivData;
pbe_params.pPassword = pwitem->data;
pbe_params.ulPasswordLen = pwitem->len;
pbe_params.pSalt = salt->data;
pbe_params.ulSaltLen = salt->len;
pbe_params.ulIteration = iterations;
mechItem.data = (unsigned char *) &pbe_params;
mechItem.len = sizeof(pbe_params);
slot = PK11_GetInternalSlot();
symKey = PK11_RawPBEKeyGen(slot,mechanism,
&mechItem, pwitem, PR_FALSE, NULL);
PK11_FreeSlot(slot);
if (symKey != NULL) {
if (bitGenPurpose == pbeBitGenCipherIV) {
/* NOTE: this assumes that bitsNeeded is a multiple of 8! */
SECItem ivItem;
ivItem.data = ivData;
ivItem.len = bitsNeeded/8;
context = SECITEM_DupItem(&ivItem);
} else {
SECItem *keyData;
PK11_ExtractKeyValue(symKey);
keyData = PK11_GetKeyData(symKey);
/* assert bitsNeeded with length? */
if (keyData) {
context = SECITEM_DupItem(keyData);
}
}
PK11_FreeSymKey(symKey);
}
return (PBEBitGenContext *)context;
}
/*
* public, Deprecated, This function is only for binary compatibility with
* older applications. Does not support PKCS5v2.
*
* Applications should use PK11_PBEKeyGen() for keys and PK11_GetIV() for
* iv values rather than generating PBE bits directly.
*/
SECItem *
PBE_GenerateBits(PBEBitGenContext *context)
{
return (SECItem *)context;
}
/*
* public, Deprecated, This function is only for binary compatibility with
* older applications. Does not support PKCS5v2.
*
* Applications should use PK11_PBEKeyGen() for keys and PK11_GetPBEIV() for
* iv values rather than generating PBE bits directly.
*/
void
PBE_DestroyContext(PBEBitGenContext *context)
{
SECITEM_FreeItem((SECItem *)context,PR_TRUE);
}
/*
* public, deprecated. Replaced with PK11_GetPBEIV().
*/
SECItem *
SEC_PKCS5GetIV(SECAlgorithmID *algid, SECItem *pwitem, PRBool faulty3DES)
{
/* pbe stuff */
CK_MECHANISM_TYPE type;
SECItem *param = NULL;
SECItem *iv = NULL;
SECItem src;
int iv_len = 0;
PK11SymKey *symKey;
PK11SlotInfo *slot;
CK_PBE_PARAMS_PTR pPBEparams;
SECOidTag pbeAlg;
pbeAlg = SECOID_GetAlgorithmTag(algid);
if (sec_pkcs5_is_algorithm_v2_pkcs5_algorithm(pbeAlg)) {
unsigned char *ivData;
sec_pkcs5V2Parameter *pbeV2_param = NULL;
/* can only return the IV if the crypto Algorithm exists */
if (pbeAlg == SEC_OID_PKCS5_PBKDF2) {
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
goto loser;
}
pbeV2_param = sec_pkcs5_v2_get_v2_param(NULL, algid);
if (pbeV2_param == NULL) {
goto loser;
}
/* extract the IV from the cipher algid portion of our pkcs 5 v2
* algorithm id */
type = PK11_AlgtagToMechanism(
SECOID_GetAlgorithmTag(&pbeV2_param->cipherAlgId));
param = PK11_ParamFromAlgid(&pbeV2_param->cipherAlgId);
sec_pkcs5_v2_destroy_v2_param(pbeV2_param);
if (!param) {
goto loser;
}
/* NOTE: NULL is a permissible return here */
ivData = PK11_IVFromParam(type, param, &iv_len);
src.data = ivData;
src.len = iv_len;
goto done;
}
type = PK11_AlgtagToMechanism(pbeAlg);
param = PK11_ParamFromAlgid(algid);
if (param == NULL) {
goto done;
}
slot = PK11_GetInternalSlot();
symKey = PK11_RawPBEKeyGen(slot, type, param, pwitem, faulty3DES, NULL);
PK11_FreeSlot(slot);
if (symKey == NULL) {
goto loser;
}
PK11_FreeSymKey(symKey);
pPBEparams = (CK_PBE_PARAMS_PTR)param->data;
iv_len = PK11_GetIVLength(type);
src.data = (unsigned char *)pPBEparams->pInitVector;
src.len = iv_len;
done:
iv = SECITEM_DupItem(&src);
loser:
if (param) {
SECITEM_ZfreeItem(param, PR_TRUE);
}
return iv;
}
/*
* Subs from nss 3.x that are deprecated
*/
PBEBitGenContext *
__PBE_CreateContext(SECOidTag hashAlgorithm, PBEBitGenID bitGenPurpose,
SECItem *pwitem, SECItem *salt, unsigned int bitsNeeded,
unsigned int iterations)
{
PORT_Assert("__PBE_CreateContext is Deprecated" == NULL);
return NULL;
}
SECItem *
__PBE_GenerateBits(PBEBitGenContext *context)
{
PORT_Assert("__PBE_GenerateBits is Deprecated" == NULL);
return NULL;
}
void
__PBE_DestroyContext(PBEBitGenContext *context)
{
PORT_Assert("__PBE_DestroyContext is Deprecated" == NULL);
}
SECStatus
RSA_FormatBlock(SECItem *result, unsigned modulusLen,
int blockType, SECItem *data)
{
PORT_Assert("RSA_FormatBlock is Deprecated" == NULL);
return SECFailure;
}
/****************************************************************************
*
* Now Do The PBE Functions Here...
*
****************************************************************************/
static void
pk11_destroy_ck_pbe_params(CK_PBE_PARAMS *pbe_params)
{
if (pbe_params) {
if (pbe_params->pPassword)
PORT_ZFree(pbe_params->pPassword, pbe_params->ulPasswordLen);
if (pbe_params->pSalt)
PORT_ZFree(pbe_params->pSalt, pbe_params->ulSaltLen);
PORT_ZFree(pbe_params, sizeof(CK_PBE_PARAMS));
}
}
/*
* public, deprecated. use PK11_CreatePBEAlgorithmID or
* PK11_CreatePBEV2AlgorithmID instead. If you needthe pkcs #11 parameters,
* use PK11_ParamFromAlgid from the algorithm id you created using
* PK11_CreatePBEAlgorithmID or PK11_CreatePBEV2AlgorithmID.
*/
SECItem *
PK11_CreatePBEParams(SECItem *salt, SECItem *pwd, unsigned int iterations)
{
CK_PBE_PARAMS *pbe_params = NULL;
SECItem *paramRV = NULL;
paramRV = SECITEM_AllocItem(NULL, NULL, sizeof(CK_PBE_PARAMS));
if (!paramRV ) {
goto loser;
}
/* init paramRV->data with zeros. SECITEM_AllocItem does not do it */
PORT_Memset(paramRV->data, 0, sizeof(CK_PBE_PARAMS));
pbe_params = (CK_PBE_PARAMS *)paramRV->data;
pbe_params->pPassword = (CK_CHAR_PTR)PORT_ZAlloc(pwd->len);
if (!pbe_params->pPassword) {
goto loser;
}
PORT_Memcpy(pbe_params->pPassword, pwd->data, pwd->len);
pbe_params->ulPasswordLen = pwd->len;
pbe_params->pSalt = (CK_CHAR_PTR)PORT_ZAlloc(salt->len);
if (!pbe_params->pSalt) {
goto loser;
}
PORT_Memcpy(pbe_params->pSalt, salt->data, salt->len);
pbe_params->ulSaltLen = salt->len;
pbe_params->ulIteration = (CK_ULONG)iterations;
return paramRV;
loser:
if (pbe_params)
pk11_destroy_ck_pbe_params(pbe_params);
if (paramRV)
PORT_ZFree(paramRV, sizeof(SECItem));
return NULL;
}
/*
* public, deprecated.
*/
void
PK11_DestroyPBEParams(SECItem *pItem)
{
if (pItem) {
CK_PBE_PARAMS * params = (CK_PBE_PARAMS *)(pItem->data);
if (params)
pk11_destroy_ck_pbe_params(params);
PORT_ZFree(pItem, sizeof(SECItem));
}
}
/*
* public, Partially supports PKCS5 V2 (some parameters are not controllable
* through this interface). Use PK11_CreatePBEV2AlgorithmID() if you need
* finer control these.
*/
SECAlgorithmID *
PK11_CreatePBEAlgorithmID(SECOidTag algorithm, int iteration, SECItem *salt)
{
SECAlgorithmID *algid = NULL;
algid = sec_pkcs5CreateAlgorithmID(algorithm,
SEC_OID_UNKNOWN, SEC_OID_UNKNOWN, NULL, 0, salt, iteration);
return algid;
}
/*
* public, fully support pkcs5v2.
*/
SECAlgorithmID *
PK11_CreatePBEV2AlgorithmID(SECOidTag pbeAlgTag, SECOidTag cipherAlgTag,
SECOidTag prfAlgTag, int keyLength, int iteration,
SECItem *salt)
{
SECAlgorithmID *algid = NULL;
algid = sec_pkcs5CreateAlgorithmID(pbeAlgTag, cipherAlgTag, prfAlgTag,
NULL, keyLength, salt, iteration);
return algid;
}
/*
* private.
*/
PK11SymKey *
pk11_RawPBEKeyGenWithKeyType(PK11SlotInfo *slot, CK_MECHANISM_TYPE type,
SECItem *params, CK_KEY_TYPE keyType, int keyLen,
SECItem *pwitem, void *wincx)
{
CK_ULONG pwLen;
/* do some sanity checks */
if ((params == NULL) || (params->data == NULL)) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return NULL;
}
if (type == CKM_INVALID_MECHANISM) {
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
return NULL;
}
/* set the password pointer in the parameters... */
if (type == CKM_PKCS5_PBKD2) {
CK_PKCS5_PBKD2_PARAMS *pbev2_params;
if (params->len < sizeof(CK_PKCS5_PBKD2_PARAMS)) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return NULL;
}
pbev2_params = (CK_PKCS5_PBKD2_PARAMS *)params->data;
pbev2_params->pPassword = pwitem->data;
pwLen = pwitem->len;
pbev2_params->ulPasswordLen = &pwLen;
} else {
CK_PBE_PARAMS *pbe_params;
if (params->len < sizeof(CK_PBE_PARAMS)) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return NULL;
}
pbe_params = (CK_PBE_PARAMS *)params->data;
pbe_params->pPassword = pwitem->data;
pbe_params->ulPasswordLen = pwitem->len;
}
/* generate the key (and sometimes the IV as a side effect...) */
return pk11_TokenKeyGenWithFlagsAndKeyType(slot, type, params, keyType,
keyLen, NULL, CKF_SIGN|CKF_ENCRYPT|CKF_DECRYPT|CKF_UNWRAP|CKF_WRAP,
0, wincx);
}
/*
* public, deprecated. use PK11_PBEKeyGen instead.
*/
PK11SymKey *
PK11_RawPBEKeyGen(PK11SlotInfo *slot, CK_MECHANISM_TYPE type, SECItem *mech,
SECItem *pwitem, PRBool faulty3DES, void *wincx)
{
if(faulty3DES && (type == CKM_NETSCAPE_PBE_SHA1_TRIPLE_DES_CBC)) {
type = CKM_NETSCAPE_PBE_SHA1_FAULTY_3DES_CBC;
}
return pk11_RawPBEKeyGenWithKeyType(slot, type, mech, -1, 0, pwitem, wincx);
}
/*
* pubic, supports pkcs5 v2.
*
* Create symkey from a PBE key. The algid can be created with
* PK11_CreatePBEV2AlgorithmID and PK11_CreatePBEAlgorithmID, or by
* extraction of der data.
*/
PK11SymKey *
PK11_PBEKeyGen(PK11SlotInfo *slot, SECAlgorithmID *algid, SECItem *pwitem,
PRBool faulty3DES, void *wincx)
{
CK_MECHANISM_TYPE type;
SECItem *param = NULL;
PK11SymKey *symKey;
SECOidTag pbeAlg;
CK_KEY_TYPE keyType = -1;
int keyLen = 0;
pbeAlg = SECOID_GetAlgorithmTag(algid);
/* if we're using PKCS5v2, extract the additional information we need
* (key length, key type, and pbeAlg). */
if (sec_pkcs5_is_algorithm_v2_pkcs5_algorithm(pbeAlg)) {
CK_MECHANISM_TYPE cipherMech;
sec_pkcs5V2Parameter *pbeV2_param;
pbeV2_param = sec_pkcs5_v2_get_v2_param(NULL, algid);
if (pbeV2_param == NULL) {
return NULL;
}
cipherMech = PK11_AlgtagToMechanism(
SECOID_GetAlgorithmTag(&pbeV2_param->cipherAlgId));
pbeAlg = SECOID_GetAlgorithmTag(&pbeV2_param->pbeAlgId);
param = PK11_ParamFromAlgid(&pbeV2_param->pbeAlgId);
sec_pkcs5_v2_destroy_v2_param(pbeV2_param);
keyLen = SEC_PKCS5GetKeyLength(algid);
if (keyLen == -1) {
keyLen = 0;
}
keyType = PK11_GetKeyType(cipherMech, keyLen);
} else {
param = PK11_ParamFromAlgid(algid);
}
if(param == NULL) {
return NULL;
}
type = PK11_AlgtagToMechanism(pbeAlg);
if (type == CKM_INVALID_MECHANISM) {
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
return NULL;
}
if(faulty3DES && (type == CKM_NETSCAPE_PBE_SHA1_TRIPLE_DES_CBC)) {
type = CKM_NETSCAPE_PBE_SHA1_FAULTY_3DES_CBC;
}
symKey = pk11_RawPBEKeyGenWithKeyType(slot, type, param, keyType, keyLen,
pwitem, wincx);
SECITEM_ZfreeItem(param, PR_TRUE);
return symKey;
}
/*
* public, supports pkcs5v2
*/
SECItem *
PK11_GetPBEIV(SECAlgorithmID *algid, SECItem *pwitem)
{
return SEC_PKCS5GetIV(algid, pwitem, PR_FALSE);
}
CK_MECHANISM_TYPE
pk11_GetPBECryptoMechanism(SECAlgorithmID *algid, SECItem **param,
SECItem *pbe_pwd, PRBool faulty3DES)
{
int keyLen = 0;
SECOidTag algTag = SEC_PKCS5GetCryptoAlgorithm(algid);
CK_MECHANISM_TYPE mech = PK11_AlgtagToMechanism(algTag);
CK_MECHANISM_TYPE returnedMechanism = CKM_INVALID_MECHANISM;
SECItem *iv = NULL;
if (mech == CKM_INVALID_MECHANISM) {
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
goto loser;
}
if (PK11_GetIVLength(mech)) {
iv = SEC_PKCS5GetIV(algid, pbe_pwd, faulty3DES);
if (iv == NULL) {
goto loser;
}
}
keyLen = SEC_PKCS5GetKeyLength(algid);
*param = pk11_ParamFromIVWithLen(mech, iv, keyLen);
if (*param == NULL) {
goto loser;
}
returnedMechanism = mech;
loser:
if (iv) {
SECITEM_FreeItem(iv,PR_TRUE);
}
return returnedMechanism;
}
/*
* public, supports pkcs5 v2
*
* get a the crypto mechanism directly from the pbe algorithmid.
*
* it's important to go directly from the algorithm id so that we can
* handle both the PKCS #5 v1, PKCS #12, and PKCS #5 v2 cases.
*
* This function returns both the mechanism an the paramter for the mechanism.
* The caller is responsible for freeing the parameter.
*/
CK_MECHANISM_TYPE
PK11_GetPBECryptoMechanism(SECAlgorithmID *algid, SECItem **param,
SECItem *pbe_pwd)
{
return pk11_GetPBECryptoMechanism(algid, param, pbe_pwd, PR_FALSE);
}
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