gecko-dev/security/nss/lib/softoken/keydb.c

2886 строки
68 KiB
C

/* ***** 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):
* Dr Vipul Gupta <vipul.gupta@sun.com>, Sun Microsystems Laboratories
*
* 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 ***** */
/* $Id: keydb.c,v 1.40 2005/09/28 17:12:17 relyea%netscape.com Exp $ */
#include "lowkeyi.h"
#include "seccomon.h"
#include "sechash.h"
#include "secder.h"
#include "secasn1.h"
#include "secoid.h"
#include "blapi.h"
#include "secitem.h"
#include "pcert.h"
#include "mcom_db.h"
#include "lowpbe.h"
#include "secerr.h"
#include "cdbhdl.h"
#include "nsslocks.h"
#include "keydbi.h"
#ifdef NSS_ENABLE_ECC
extern SECStatus EC_FillParams(PRArenaPool *arena,
const SECItem *encodedParams,
ECParams *params);
#endif
/*
* Record keys for keydb
*/
#define SALT_STRING "global-salt"
#define VERSION_STRING "Version"
#define KEYDB_PW_CHECK_STRING "password-check"
#define KEYDB_PW_CHECK_LEN 14
#define KEYDB_FAKE_PW_CHECK_STRING "fake-password-check"
#define KEYDB_FAKE_PW_CHECK_LEN 19
/* Size of the global salt for key database */
#define SALT_LENGTH 16
const SEC_ASN1Template nsslowkey_AttributeTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSLOWKEYAttribute) },
{ SEC_ASN1_OBJECT_ID, offsetof(NSSLOWKEYAttribute, attrType) },
{ SEC_ASN1_SET_OF, offsetof(NSSLOWKEYAttribute, attrValue),
SEC_AnyTemplate },
{ 0 }
};
const SEC_ASN1Template nsslowkey_SetOfAttributeTemplate[] = {
{ SEC_ASN1_SET_OF, 0, nsslowkey_AttributeTemplate },
};
/* ASN1 Templates for new decoder/encoder */
const SEC_ASN1Template nsslowkey_PrivateKeyInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSLOWKEYPrivateKeyInfo) },
{ SEC_ASN1_INTEGER,
offsetof(NSSLOWKEYPrivateKeyInfo,version) },
{ SEC_ASN1_INLINE,
offsetof(NSSLOWKEYPrivateKeyInfo,algorithm),
SECOID_AlgorithmIDTemplate },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSLOWKEYPrivateKeyInfo,privateKey) },
{ SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
offsetof(NSSLOWKEYPrivateKeyInfo, attributes),
nsslowkey_SetOfAttributeTemplate },
{ 0 }
};
const SEC_ASN1Template nsslowkey_PointerToPrivateKeyInfoTemplate[] = {
{ SEC_ASN1_POINTER, 0, nsslowkey_PrivateKeyInfoTemplate }
};
const SEC_ASN1Template nsslowkey_EncryptedPrivateKeyInfoTemplate[] = {
{ SEC_ASN1_SEQUENCE,
0, NULL, sizeof(NSSLOWKEYEncryptedPrivateKeyInfo) },
{ SEC_ASN1_INLINE,
offsetof(NSSLOWKEYEncryptedPrivateKeyInfo,algorithm),
SECOID_AlgorithmIDTemplate },
{ SEC_ASN1_OCTET_STRING,
offsetof(NSSLOWKEYEncryptedPrivateKeyInfo,encryptedData) },
{ 0 }
};
const SEC_ASN1Template nsslowkey_PointerToEncryptedPrivateKeyInfoTemplate[] = {
{ SEC_ASN1_POINTER, 0, nsslowkey_EncryptedPrivateKeyInfoTemplate }
};
/* ====== Default key databse encryption algorithm ====== */
static SECOidTag defaultKeyDBAlg = SEC_OID_PKCS12_PBE_WITH_SHA1_AND_TRIPLE_DES_CBC;
/*
* Default algorithm for encrypting data in the key database
*/
SECOidTag
nsslowkey_GetDefaultKeyDBAlg(void)
{
return(defaultKeyDBAlg);
}
void
nsslowkey_SetDefaultKeyDBAlg(SECOidTag alg)
{
defaultKeyDBAlg = alg;
return;
}
static void
sec_destroy_dbkey(NSSLOWKEYDBKey *dbkey)
{
if ( dbkey && dbkey->arena ) {
PORT_FreeArena(dbkey->arena, PR_FALSE);
}
}
static void
free_dbt(DBT *dbt)
{
if ( dbt ) {
PORT_Free(dbt->data);
PORT_Free(dbt);
}
return;
}
static int keydb_Get(NSSLOWKEYDBHandle *db, DBT *key, DBT *data,
unsigned int flags);
static int keydb_Put(NSSLOWKEYDBHandle *db, DBT *key, DBT *data,
unsigned int flags);
static int keydb_Sync(NSSLOWKEYDBHandle *db, unsigned int flags);
static int keydb_Del(NSSLOWKEYDBHandle *db, DBT *key, unsigned int flags);
static int keydb_Seq(NSSLOWKEYDBHandle *db, DBT *key, DBT *data,
unsigned int flags);
static void keydb_Close(NSSLOWKEYDBHandle *db);
static void
keydb_InitLocks(NSSLOWKEYDBHandle *handle)
{
if (handle->lock == NULL) {
nss_InitLock(&handle->lock, nssILockKeyDB);
}
return;
}
static void
keydb_DestroyLocks(NSSLOWKEYDBHandle *handle)
{
if (handle->lock != NULL) {
PZ_DestroyLock(handle->lock);
handle->lock = NULL;
}
return;
}
/*
* format of key database entries for version 3 of database:
* byte offset field
* ----------- -----
* 0 version
* 1 salt-len
* 2 nn-len
* 3.. salt-data
* ... nickname
* ... encrypted-key-data
*/
static DBT *
encode_dbkey(NSSLOWKEYDBKey *dbkey,unsigned char version)
{
DBT *bufitem = NULL;
unsigned char *buf;
int nnlen;
char *nn;
bufitem = (DBT *)PORT_ZAlloc(sizeof(DBT));
if ( bufitem == NULL ) {
goto loser;
}
if ( dbkey->nickname ) {
nn = dbkey->nickname;
nnlen = PORT_Strlen(nn) + 1;
} else {
nn = "";
nnlen = 1;
}
/* compute the length of the record */
/* 1 + 1 + 1 == version number header + salt length + nn len */
bufitem->size = dbkey->salt.len + nnlen + dbkey->derPK.len + 1 + 1 + 1;
bufitem->data = (void *)PORT_ZAlloc(bufitem->size);
if ( bufitem->data == NULL ) {
goto loser;
}
buf = (unsigned char *)bufitem->data;
/* set version number */
buf[0] = version;
/* set length of salt */
PORT_Assert(dbkey->salt.len < 256);
buf[1] = dbkey->salt.len;
/* set length of nickname */
PORT_Assert(nnlen < 256);
buf[2] = nnlen;
/* copy salt */
PORT_Memcpy(&buf[3], dbkey->salt.data, dbkey->salt.len);
/* copy nickname */
PORT_Memcpy(&buf[3 + dbkey->salt.len], nn, nnlen);
/* copy encrypted key */
PORT_Memcpy(&buf[3 + dbkey->salt.len + nnlen], dbkey->derPK.data,
dbkey->derPK.len);
return(bufitem);
loser:
if ( bufitem ) {
free_dbt(bufitem);
}
return(NULL);
}
static NSSLOWKEYDBKey *
decode_dbkey(DBT *bufitem, int expectedVersion)
{
NSSLOWKEYDBKey *dbkey;
PLArenaPool *arena = NULL;
unsigned char *buf;
int version;
int keyoff;
int nnlen;
int saltoff;
buf = (unsigned char *)bufitem->data;
version = buf[0];
if ( version != expectedVersion ) {
goto loser;
}
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if ( arena == NULL ) {
goto loser;
}
dbkey = (NSSLOWKEYDBKey *)PORT_ArenaZAlloc(arena, sizeof(NSSLOWKEYDBKey));
if ( dbkey == NULL ) {
goto loser;
}
dbkey->arena = arena;
dbkey->salt.data = NULL;
dbkey->derPK.data = NULL;
dbkey->salt.len = buf[1];
dbkey->salt.data = (unsigned char *)PORT_ArenaZAlloc(arena, dbkey->salt.len);
if ( dbkey->salt.data == NULL ) {
goto loser;
}
saltoff = 2;
keyoff = 2 + dbkey->salt.len;
if ( expectedVersion >= 3 ) {
nnlen = buf[2];
if ( nnlen ) {
dbkey->nickname = (char *)PORT_ArenaZAlloc(arena, nnlen + 1);
if ( dbkey->nickname ) {
PORT_Memcpy(dbkey->nickname, &buf[keyoff+1], nnlen);
}
}
keyoff += ( nnlen + 1 );
saltoff = 3;
}
PORT_Memcpy(dbkey->salt.data, &buf[saltoff], dbkey->salt.len);
dbkey->derPK.len = bufitem->size - keyoff;
dbkey->derPK.data = (unsigned char *)PORT_ArenaZAlloc(arena,dbkey->derPK.len);
if ( dbkey->derPK.data == NULL ) {
goto loser;
}
PORT_Memcpy(dbkey->derPK.data, &buf[keyoff], dbkey->derPK.len);
return(dbkey);
loser:
if ( arena ) {
PORT_FreeArena(arena, PR_FALSE);
}
return(NULL);
}
static NSSLOWKEYDBKey *
get_dbkey(NSSLOWKEYDBHandle *handle, DBT *index)
{
NSSLOWKEYDBKey *dbkey;
DBT entry;
int ret;
/* get it from the database */
ret = keydb_Get(handle, index, &entry, 0);
if ( ret ) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
return NULL;
}
/* set up dbkey struct */
dbkey = decode_dbkey(&entry, handle->version);
return(dbkey);
}
static SECStatus
put_dbkey(NSSLOWKEYDBHandle *handle, DBT *index, NSSLOWKEYDBKey *dbkey, PRBool update)
{
DBT *keydata = NULL;
int status;
keydata = encode_dbkey(dbkey, handle->version);
if ( keydata == NULL ) {
goto loser;
}
/* put it in the database */
if ( update ) {
status = keydb_Put(handle, index, keydata, 0);
} else {
status = keydb_Put(handle, index, keydata, R_NOOVERWRITE);
}
if ( status ) {
goto loser;
}
/* sync the database */
status = keydb_Sync(handle, 0);
if ( status ) {
goto loser;
}
free_dbt(keydata);
return(SECSuccess);
loser:
if ( keydata ) {
free_dbt(keydata);
}
return(SECFailure);
}
SECStatus
nsslowkey_TraverseKeys(NSSLOWKEYDBHandle *handle,
SECStatus (* keyfunc)(DBT *k, DBT *d, void *pdata),
void *udata )
{
DBT data;
DBT key;
SECStatus status;
int ret;
if (handle == NULL) {
return(SECFailure);
}
ret = keydb_Seq(handle, &key, &data, R_FIRST);
if ( ret ) {
return(SECFailure);
}
do {
/* skip version record */
if ( data.size > 1 ) {
if ( key.size == ( sizeof(SALT_STRING) - 1 ) ) {
if ( PORT_Memcmp(key.data, SALT_STRING, key.size) == 0 ) {
continue;
}
}
/* skip password check */
if ( key.size == KEYDB_PW_CHECK_LEN ) {
if ( PORT_Memcmp(key.data, KEYDB_PW_CHECK_STRING,
KEYDB_PW_CHECK_LEN) == 0 ) {
continue;
}
}
status = (* keyfunc)(&key, &data, udata);
if (status != SECSuccess) {
return(status);
}
}
} while ( keydb_Seq(handle, &key, &data, R_NEXT) == 0 );
return(SECSuccess);
}
typedef struct keyNode {
struct keyNode *next;
DBT key;
} keyNode;
typedef struct {
PLArenaPool *arena;
keyNode *head;
} keyList;
static SECStatus
sec_add_key_to_list(DBT *key, DBT *data, void *arg)
{
keyList *keylist;
keyNode *node;
void *keydata;
keylist = (keyList *)arg;
/* allocate the node struct */
node = (keyNode*)PORT_ArenaZAlloc(keylist->arena, sizeof(keyNode));
if ( node == NULL ) {
return(SECFailure);
}
/* allocate room for key data */
keydata = PORT_ArenaZAlloc(keylist->arena, key->size);
if ( keydata == NULL ) {
return(SECFailure);
}
/* link node into list */
node->next = keylist->head;
keylist->head = node;
/* copy key into node */
PORT_Memcpy(keydata, key->data, key->size);
node->key.size = key->size;
node->key.data = keydata;
return(SECSuccess);
}
static SECItem *
decodeKeyDBGlobalSalt(DBT *saltData)
{
SECItem *saltitem;
saltitem = (SECItem *)PORT_ZAlloc(sizeof(SECItem));
if ( saltitem == NULL ) {
return(NULL);
}
saltitem->data = (unsigned char *)PORT_ZAlloc(saltData->size);
if ( saltitem->data == NULL ) {
PORT_Free(saltitem);
return(NULL);
}
saltitem->len = saltData->size;
PORT_Memcpy(saltitem->data, saltData->data, saltitem->len);
return(saltitem);
}
static SECItem *
GetKeyDBGlobalSalt(NSSLOWKEYDBHandle *handle)
{
DBT saltKey;
DBT saltData;
int ret;
saltKey.data = SALT_STRING;
saltKey.size = sizeof(SALT_STRING) - 1;
ret = keydb_Get(handle, &saltKey, &saltData, 0);
if ( ret ) {
return(NULL);
}
return(decodeKeyDBGlobalSalt(&saltData));
}
static SECStatus
StoreKeyDBGlobalSalt(NSSLOWKEYDBHandle *handle)
{
DBT saltKey;
DBT saltData;
int status;
saltKey.data = SALT_STRING;
saltKey.size = sizeof(SALT_STRING) - 1;
saltData.data = (void *)handle->global_salt->data;
saltData.size = handle->global_salt->len;
/* put global salt into the database now */
status = keydb_Put(handle, &saltKey, &saltData, 0);
if ( status ) {
return(SECFailure);
}
return(SECSuccess);
}
static SECStatus
makeGlobalVersion(NSSLOWKEYDBHandle *handle)
{
unsigned char version;
DBT versionData;
DBT versionKey;
int status;
version = NSSLOWKEY_DB_FILE_VERSION;
versionData.data = &version;
versionData.size = 1;
versionKey.data = VERSION_STRING;
versionKey.size = sizeof(VERSION_STRING)-1;
/* put version string into the database now */
status = keydb_Put(handle, &versionKey, &versionData, 0);
if ( status ) {
return(SECFailure);
}
handle->version = version;
return(SECSuccess);
}
static SECStatus
makeGlobalSalt(NSSLOWKEYDBHandle *handle)
{
DBT saltKey;
DBT saltData;
unsigned char saltbuf[16];
int status;
saltKey.data = SALT_STRING;
saltKey.size = sizeof(SALT_STRING) - 1;
saltData.data = (void *)saltbuf;
saltData.size = sizeof(saltbuf);
RNG_GenerateGlobalRandomBytes(saltbuf, sizeof(saltbuf));
/* put global salt into the database now */
status = keydb_Put(handle, &saltKey, &saltData, 0);
if ( status ) {
return(SECFailure);
}
return(SECSuccess);
}
static SECStatus
ChangeKeyDBPasswordAlg(NSSLOWKEYDBHandle *handle,
SECItem *oldpwitem, SECItem *newpwitem,
SECOidTag new_algorithm);
/*
* Second pass of updating the key db. This time we have a password.
*/
static SECStatus
nsslowkey_UpdateKeyDBPass2(NSSLOWKEYDBHandle *handle, SECItem *pwitem)
{
SECStatus rv;
rv = ChangeKeyDBPasswordAlg(handle, pwitem, pwitem,
nsslowkey_GetDefaultKeyDBAlg());
return(rv);
}
static SECStatus
encodePWCheckEntry(PLArenaPool *arena, SECItem *entry, SECOidTag alg,
SECItem *encCheck);
static unsigned char
nsslowkey_version(NSSLOWKEYDBHandle *handle)
{
DBT versionKey;
DBT versionData;
int ret;
versionKey.data = VERSION_STRING;
versionKey.size = sizeof(VERSION_STRING)-1;
if (handle->db == NULL) {
return 255;
}
/* lookup version string in database */
ret = keydb_Get( handle, &versionKey, &versionData, 0 );
/* error accessing the database */
if ( ret < 0 ) {
return 255;
}
if ( ret >= 1 ) {
return 0;
}
return *( (unsigned char *)versionData.data);
}
static PRBool
seckey_HasAServerKey(NSSLOWKEYDBHandle *handle)
{
DBT key;
DBT data;
int ret;
PRBool found = PR_FALSE;
ret = keydb_Seq(handle, &key, &data, R_FIRST);
if ( ret ) {
return PR_FALSE;
}
do {
/* skip version record */
if ( data.size > 1 ) {
/* skip salt */
if ( key.size == ( sizeof(SALT_STRING) - 1 ) ) {
if ( PORT_Memcmp(key.data, SALT_STRING, key.size) == 0 ) {
continue;
}
}
/* skip pw check entry */
if ( key.size == KEYDB_PW_CHECK_LEN ) {
if ( PORT_Memcmp(key.data, KEYDB_PW_CHECK_STRING,
KEYDB_PW_CHECK_LEN) == 0 ) {
continue;
}
}
/* keys stored by nickname will have 0 as the last byte of the
* db key. Other keys must be stored by modulus. We will not
* update those because they are left over from a keygen that
* never resulted in a cert.
*/
if ( ((unsigned char *)key.data)[key.size-1] != 0 ) {
continue;
}
if (PORT_Strcmp(key.data,"Server-Key") == 0) {
found = PR_TRUE;
break;
}
}
} while ( keydb_Seq(handle, &key, &data, R_NEXT) == 0 );
return found;
}
/* forward declare local create function */
static NSSLOWKEYDBHandle * nsslowkey_NewHandle(DB *dbHandle);
/*
* currently updates key database from v2 to v3
*/
static SECStatus
nsslowkey_UpdateKeyDBPass1(NSSLOWKEYDBHandle *handle)
{
SECStatus rv;
DBT checkKey;
DBT checkData;
DBT saltKey;
DBT saltData;
DBT key;
DBT data;
unsigned char version;
SECItem *rc4key = NULL;
NSSLOWKEYDBKey *dbkey = NULL;
NSSLOWKEYDBHandle *update = NULL;
SECItem *oldSalt = NULL;
int ret;
SECItem checkitem;
if ( handle->updatedb == NULL ) {
return SECSuccess;
}
/* create a full DB Handle for our update so we
* can use the correct locks for the db primatives */
update = nsslowkey_NewHandle(handle->updatedb);
if ( update == NULL) {
return SECSuccess;
}
/* update has now inherited the database handle */
handle->updatedb = NULL;
/*
* check the version record
*/
version = nsslowkey_version(update);
if (version != 2) {
goto done;
}
saltKey.data = SALT_STRING;
saltKey.size = sizeof(SALT_STRING) - 1;
ret = keydb_Get(update, &saltKey, &saltData, 0);
if ( ret ) {
/* no salt in old db, so it is corrupted */
goto done;
}
oldSalt = decodeKeyDBGlobalSalt(&saltData);
if ( oldSalt == NULL ) {
/* bad salt in old db, so it is corrupted */
goto done;
}
/*
* look for a pw check entry
*/
checkKey.data = KEYDB_PW_CHECK_STRING;
checkKey.size = KEYDB_PW_CHECK_LEN;
ret = keydb_Get(update, &checkKey, &checkData, 0 );
if (ret) {
/*
* if we have a key, but no KEYDB_PW_CHECK_STRING, then this must
* be an old server database, and it does have a password associated
* with it. Put a fake entry in so we can identify this db when we do
* get the password for it.
*/
if (seckey_HasAServerKey(update)) {
DBT fcheckKey;
DBT fcheckData;
/*
* include a fake string
*/
fcheckKey.data = KEYDB_FAKE_PW_CHECK_STRING;
fcheckKey.size = KEYDB_FAKE_PW_CHECK_LEN;
fcheckData.data = "1";
fcheckData.size = 1;
/* put global salt into the new database now */
ret = keydb_Put( handle, &saltKey, &saltData, 0);
if ( ret ) {
goto done;
}
ret = keydb_Put( handle, &fcheckKey, &fcheckData, 0);
if ( ret ) {
goto done;
}
} else {
goto done;
}
} else {
/* put global salt into the new database now */
ret = keydb_Put( handle, &saltKey, &saltData, 0);
if ( ret ) {
goto done;
}
dbkey = decode_dbkey(&checkData, 2);
if ( dbkey == NULL ) {
goto done;
}
checkitem = dbkey->derPK;
dbkey->derPK.data = NULL;
/* format the new pw check entry */
rv = encodePWCheckEntry(NULL, &dbkey->derPK, SEC_OID_RC4, &checkitem);
if ( rv != SECSuccess ) {
goto done;
}
rv = put_dbkey(handle, &checkKey, dbkey, PR_TRUE);
if ( rv != SECSuccess ) {
goto done;
}
/* free the dbkey */
sec_destroy_dbkey(dbkey);
dbkey = NULL;
}
/* now traverse the database */
ret = keydb_Seq(update, &key, &data, R_FIRST);
if ( ret ) {
goto done;
}
do {
/* skip version record */
if ( data.size > 1 ) {
/* skip salt */
if ( key.size == ( sizeof(SALT_STRING) - 1 ) ) {
if ( PORT_Memcmp(key.data, SALT_STRING, key.size) == 0 ) {
continue;
}
}
/* skip pw check entry */
if ( key.size == checkKey.size ) {
if ( PORT_Memcmp(key.data, checkKey.data, key.size) == 0 ) {
continue;
}
}
/* keys stored by nickname will have 0 as the last byte of the
* db key. Other keys must be stored by modulus. We will not
* update those because they are left over from a keygen that
* never resulted in a cert.
*/
if ( ((unsigned char *)key.data)[key.size-1] != 0 ) {
continue;
}
dbkey = decode_dbkey(&data, 2);
if ( dbkey == NULL ) {
continue;
}
/* This puts the key into the new database with the same
* index (nickname) that it had before. The second pass
* of the update will have the password. It will decrypt
* and re-encrypt the entries using a new algorithm.
*/
dbkey->nickname = (char *)key.data;
rv = put_dbkey(handle, &key, dbkey, PR_FALSE);
dbkey->nickname = NULL;
sec_destroy_dbkey(dbkey);
}
} while ( keydb_Seq(update, &key, &data, R_NEXT) == 0 );
dbkey = NULL;
done:
/* sync the database */
ret = keydb_Sync(handle, 0);
nsslowkey_CloseKeyDB(update);
if ( rc4key ) {
SECITEM_FreeItem(rc4key, PR_TRUE);
}
if ( oldSalt ) {
SECITEM_FreeItem(oldSalt, PR_TRUE);
}
if ( dbkey ) {
sec_destroy_dbkey(dbkey);
}
return(SECSuccess);
}
static SECStatus
openNewDB(const char *appName, const char *prefix, const char *dbname,
NSSLOWKEYDBHandle *handle, NSSLOWKEYDBNameFunc namecb, void *cbarg)
{
SECStatus rv = SECFailure;
int status = RDB_FAIL;
char *updname = NULL;
DB *updatedb = NULL;
PRBool updated = PR_FALSE;
int ret;
if (appName) {
handle->db = rdbopen( appName, prefix, "key", NO_CREATE, &status);
} else {
handle->db = dbopen( dbname, NO_CREATE, 0600, DB_HASH, 0 );
}
/* if create fails then we lose */
if ( handle->db == NULL ) {
return (status == RDB_RETRY) ? SECWouldBlock: SECFailure;
}
rv = db_BeginTransaction(handle->db);
if (rv != SECSuccess) {
db_InitComplete(handle->db);
return rv;
}
/* force a transactional read, which will verify that one and only one
* process attempts the update. */
if (nsslowkey_version(handle) == NSSLOWKEY_DB_FILE_VERSION) {
/* someone else has already updated the database for us */
db_FinishTransaction(handle->db, PR_FALSE);
db_InitComplete(handle->db);
return SECSuccess;
}
/*
* if we are creating a multiaccess database, see if there is a
* local database we can update from.
*/
if (appName) {
NSSLOWKEYDBHandle *updateHandle = nsslowkey_NewHandle(updatedb);
updatedb = dbopen( dbname, NO_RDONLY, 0600, DB_HASH, 0 );
if (!updatedb) {
goto noupdate;
}
/* nsslowkey_version needs a full handle because it calls
* the kdb_Get() function, which needs to lock.
*/
updateHandle = nsslowkey_NewHandle(updatedb);
if (!updateHandle) {
updatedb->close(updatedb);
goto noupdate;
}
handle->version = nsslowkey_version(updateHandle);
if (handle->version != NSSLOWKEY_DB_FILE_VERSION) {
nsslowkey_CloseKeyDB(updateHandle);
goto noupdate;
}
/* copy the new DB from the old one */
db_Copy(handle->db, updatedb);
nsslowkey_CloseKeyDB(updateHandle);
db_FinishTransaction(handle->db,PR_FALSE);
db_InitComplete(handle->db);
return SECSuccess;
}
noupdate:
/* update the version number */
rv = makeGlobalVersion(handle);
if ( rv != SECSuccess ) {
goto loser;
}
/*
* try to update from v2 db
*/
updname = (*namecb)(cbarg, 2);
if ( updname != NULL ) {
handle->updatedb = dbopen( updname, NO_RDONLY, 0600, DB_HASH, 0 );
PORT_Free( updname );
if ( handle->updatedb ) {
/*
* Try to update the db using a null password. If the db
* doesn't have a password, then this will work. If it does
* have a password, then this will fail and we will do the
* update later
*/
rv = nsslowkey_UpdateKeyDBPass1(handle);
if ( rv == SECSuccess ) {
updated = PR_TRUE;
}
}
}
/* we are using the old salt if we updated from an old db */
if ( ! updated ) {
rv = makeGlobalSalt(handle);
if ( rv != SECSuccess ) {
goto loser;
}
}
/* sync the database */
ret = keydb_Sync(handle, 0);
if ( ret ) {
rv = SECFailure;
goto loser;
}
rv = SECSuccess;
loser:
db_FinishTransaction(handle->db, rv != SECSuccess);
db_InitComplete(handle->db);
return rv;
}
static DB *
openOldDB(const char *appName, const char *prefix, const char *dbname,
PRBool openflags) {
DB *db = NULL;
if (appName) {
db = rdbopen( appName, prefix, "key", openflags, NULL);
} else {
db = dbopen( dbname, openflags, 0600, DB_HASH, 0 );
}
return db;
}
/* check for correct version number */
static PRBool
verifyVersion(NSSLOWKEYDBHandle *handle)
{
int version = nsslowkey_version(handle);
handle->version = version;
if (version != NSSLOWKEY_DB_FILE_VERSION ) {
if (handle->db) {
keydb_Close(handle);
handle->db = NULL;
}
}
return handle->db != NULL;
}
static NSSLOWKEYDBHandle *
nsslowkey_NewHandle(DB *dbHandle)
{
NSSLOWKEYDBHandle *handle;
handle = (NSSLOWKEYDBHandle *)PORT_ZAlloc (sizeof(NSSLOWKEYDBHandle));
if (handle == NULL) {
PORT_SetError (SEC_ERROR_NO_MEMORY);
return NULL;
}
handle->appname = NULL;
handle->dbname = NULL;
handle->global_salt = NULL;
handle->updatedb = NULL;
handle->db = dbHandle;
handle->ref = 1;
keydb_InitLocks(handle);
return handle;
}
NSSLOWKEYDBHandle *
nsslowkey_OpenKeyDB(PRBool readOnly, const char *appName, const char *prefix,
NSSLOWKEYDBNameFunc namecb, void *cbarg)
{
NSSLOWKEYDBHandle *handle = NULL;
SECStatus rv;
int openflags;
char *dbname = NULL;
handle = nsslowkey_NewHandle(NULL);
openflags = readOnly ? NO_RDONLY : NO_RDWR;
dbname = (*namecb)(cbarg, NSSLOWKEY_DB_FILE_VERSION);
if ( dbname == NULL ) {
goto loser;
}
handle->appname = appName ? PORT_Strdup(appName) : NULL ;
handle->dbname = (appName == NULL) ? PORT_Strdup(dbname) :
(prefix ? PORT_Strdup(prefix) : NULL);
handle->readOnly = readOnly;
handle->db = openOldDB(appName, prefix, dbname, openflags);
if (handle->db) {
verifyVersion(handle);
if (handle->version == 255) {
goto loser;
}
}
/* if first open fails, try to create a new DB */
if ( handle->db == NULL ) {
if ( readOnly ) {
goto loser;
}
rv = openNewDB(appName, prefix, dbname, handle, namecb, cbarg);
/* two processes started to initialize the database at the same time.
* The multiprocess code blocked the second one, then had it retry to
* see if it can just open the database normally */
if (rv == SECWouldBlock) {
handle->db = openOldDB(appName,prefix,dbname, openflags);
verifyVersion(handle);
if (handle->db == NULL) {
goto loser;
}
} else if (rv != SECSuccess) {
goto loser;
}
}
handle->global_salt = GetKeyDBGlobalSalt(handle);
if ( dbname )
PORT_Free( dbname );
return handle;
loser:
if ( dbname )
PORT_Free( dbname );
PORT_SetError(SEC_ERROR_BAD_DATABASE);
nsslowkey_CloseKeyDB(handle);
return NULL;
}
/*
* Close the database
*/
void
nsslowkey_CloseKeyDB(NSSLOWKEYDBHandle *handle)
{
if (handle != NULL) {
if (handle->db != NULL) {
keydb_Close(handle);
}
if (handle->updatedb) {
handle->updatedb->close(handle->updatedb);
}
if (handle->dbname) PORT_Free(handle->dbname);
if (handle->appname) PORT_Free(handle->appname);
if (handle->global_salt) {
SECITEM_FreeItem(handle->global_salt,PR_TRUE);
}
keydb_DestroyLocks(handle);
PORT_Free(handle);
}
}
/* Get the key database version */
int
nsslowkey_GetKeyDBVersion(NSSLOWKEYDBHandle *handle)
{
PORT_Assert(handle != NULL);
return handle->version;
}
/*
* Delete a private key that was stored in the database
*/
SECStatus
nsslowkey_DeleteKey(NSSLOWKEYDBHandle *handle, SECItem *pubkey)
{
DBT namekey;
int ret;
if (handle == NULL) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
return(SECFailure);
}
/* set up db key and data */
namekey.data = pubkey->data;
namekey.size = pubkey->len;
/* delete it from the database */
ret = keydb_Del(handle, &namekey, 0);
if ( ret ) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
return(SECFailure);
}
/* sync the database */
ret = keydb_Sync(handle, 0);
if ( ret ) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
return(SECFailure);
}
return(SECSuccess);
}
/*
* Store a key in the database, indexed by its public key modulus.(value!)
*/
SECStatus
nsslowkey_StoreKeyByPublicKey(NSSLOWKEYDBHandle *handle,
NSSLOWKEYPrivateKey *privkey,
SECItem *pubKeyData,
char *nickname,
SECItem *arg)
{
return nsslowkey_StoreKeyByPublicKeyAlg(handle, privkey, pubKeyData,
nickname, arg, nsslowkey_GetDefaultKeyDBAlg(),PR_FALSE);
}
SECStatus
nsslowkey_UpdateNickname(NSSLOWKEYDBHandle *handle,
NSSLOWKEYPrivateKey *privkey,
SECItem *pubKeyData,
char *nickname,
SECItem *arg)
{
return nsslowkey_StoreKeyByPublicKeyAlg(handle, privkey, pubKeyData,
nickname, arg, nsslowkey_GetDefaultKeyDBAlg(),PR_TRUE);
}
/* see if the symetric CKA_ID already Exists.
*/
PRBool
nsslowkey_KeyForIDExists(NSSLOWKEYDBHandle *handle, SECItem *id)
{
DBT namekey;
DBT dummy;
int status;
namekey.data = (char *)id->data;
namekey.size = id->len;
status = keydb_Get(handle, &namekey, &dummy, 0);
if ( status ) {
return PR_FALSE;
}
return PR_TRUE;
}
/* see if the public key for this cert is in the database filed
* by modulus
*/
PRBool
nsslowkey_KeyForCertExists(NSSLOWKEYDBHandle *handle, NSSLOWCERTCertificate *cert)
{
NSSLOWKEYPublicKey *pubkey = NULL;
DBT namekey;
DBT dummy;
int status;
/* get cert's public key */
pubkey = nsslowcert_ExtractPublicKey(cert);
if ( pubkey == NULL ) {
return PR_FALSE;
}
/* TNH - make key from NSSLOWKEYPublicKey */
switch (pubkey->keyType) {
case NSSLOWKEYRSAKey:
namekey.data = pubkey->u.rsa.modulus.data;
namekey.size = pubkey->u.rsa.modulus.len;
break;
case NSSLOWKEYDSAKey:
namekey.data = pubkey->u.dsa.publicValue.data;
namekey.size = pubkey->u.dsa.publicValue.len;
break;
case NSSLOWKEYDHKey:
namekey.data = pubkey->u.dh.publicValue.data;
namekey.size = pubkey->u.dh.publicValue.len;
break;
#ifdef NSS_ENABLE_ECC
case NSSLOWKEYECKey:
namekey.data = pubkey->u.ec.publicValue.data;
namekey.size = pubkey->u.ec.publicValue.len;
break;
#endif /* NSS_ENABLE_ECC */
default:
/* XXX We don't do Fortezza or DH yet. */
return PR_FALSE;
}
if (handle->version != 3) {
unsigned char buf[SHA1_LENGTH];
SHA1_HashBuf(buf,namekey.data,namekey.size);
/* NOTE: don't use pubkey after this! it's now thrashed */
PORT_Memcpy(namekey.data,buf,sizeof(buf));
namekey.size = sizeof(buf);
}
status = keydb_Get(handle, &namekey, &dummy, 0);
/* some databases have the key stored as a signed value */
if (status) {
unsigned char *buf = (unsigned char *)PORT_Alloc(namekey.size+1);
if (buf) {
PORT_Memcpy(&buf[1], namekey.data, namekey.size);
buf[0] = 0;
namekey.data = buf;
namekey.size ++;
status = keydb_Get(handle, &namekey, &dummy, 0);
PORT_Free(buf);
}
}
nsslowkey_DestroyPublicKey(pubkey);
if ( status ) {
return PR_FALSE;
}
return PR_TRUE;
}
/*
* check to see if the user has a password
*/
SECStatus
nsslowkey_HasKeyDBPassword(NSSLOWKEYDBHandle *handle)
{
DBT checkkey, checkdata;
int ret;
if (handle == NULL) {
return(SECFailure);
}
checkkey.data = KEYDB_PW_CHECK_STRING;
checkkey.size = KEYDB_PW_CHECK_LEN;
ret = keydb_Get(handle, &checkkey, &checkdata, 0 );
if ( ret ) {
/* see if this was an updated DB first */
checkkey.data = KEYDB_FAKE_PW_CHECK_STRING;
checkkey.size = KEYDB_FAKE_PW_CHECK_LEN;
ret = keydb_Get(handle, &checkkey, &checkdata, 0 );
if ( ret ) {
return(SECFailure);
}
}
return(SECSuccess);
}
/*
* Set up the password checker in the key database.
* This is done by encrypting a known plaintext with the user's key.
*/
SECStatus
nsslowkey_SetKeyDBPassword(NSSLOWKEYDBHandle *handle, SECItem *pwitem)
{
return nsslowkey_SetKeyDBPasswordAlg(handle, pwitem,
nsslowkey_GetDefaultKeyDBAlg());
}
static SECStatus
HashPassword(unsigned char *hashresult, char *pw, SECItem *salt)
{
SHA1Context *cx;
unsigned int outlen;
cx = SHA1_NewContext();
if ( cx == NULL ) {
return(SECFailure);
}
SHA1_Begin(cx);
if ( ( salt != NULL ) && ( salt->data != NULL ) ) {
SHA1_Update(cx, salt->data, salt->len);
}
SHA1_Update(cx, (unsigned char *)pw, PORT_Strlen(pw));
SHA1_End(cx, hashresult, &outlen, SHA1_LENGTH);
SHA1_DestroyContext(cx, PR_TRUE);
return(SECSuccess);
}
SECItem *
nsslowkey_HashPassword(char *pw, SECItem *salt)
{
SECItem *pwitem;
SECStatus rv;
pwitem = (SECItem *)PORT_ZAlloc(sizeof(SECItem));
if ( pwitem == NULL ) {
return(NULL);
}
pwitem->len = SHA1_LENGTH;
pwitem->data = (unsigned char *)PORT_ZAlloc(SHA1_LENGTH);
if ( pwitem->data == NULL ) {
PORT_Free(pwitem);
return(NULL);
}
if ( pw ) {
rv = HashPassword(pwitem->data, pw, salt);
if ( rv != SECSuccess ) {
SECITEM_ZfreeItem(pwitem, PR_TRUE);
return(NULL);
}
}
return(pwitem);
}
/* Derive the actual password value for the database from a pw string */
SECItem *
nsslowkey_DeriveKeyDBPassword(NSSLOWKEYDBHandle *keydb, char *pw)
{
PORT_Assert(keydb != NULL);
PORT_Assert(pw != NULL);
if (keydb == NULL || pw == NULL) return(NULL);
return nsslowkey_HashPassword(pw, keydb->global_salt);
}
#if 0
/* Appears obsolete - TNH */
/* get the algorithm with which a private key
* is encrypted.
*/
SECOidTag
seckey_get_private_key_algorithm(NSSLOWKEYDBHandle *keydb, DBT *index)
{
NSSLOWKEYDBKey *dbkey = NULL;
SECOidTag algorithm = SEC_OID_UNKNOWN;
NSSLOWKEYEncryptedPrivateKeyInfo *epki = NULL;
PLArenaPool *poolp = NULL;
SECStatus rv;
poolp = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if(poolp == NULL)
return (SECOidTag)SECFailure; /* TNH - this is bad */
dbkey = get_dbkey(keydb, index);
if(dbkey == NULL)
return (SECOidTag)SECFailure;
epki = (NSSLOWKEYEncryptedPrivateKeyInfo *)PORT_ArenaZAlloc(poolp,
sizeof(NSSLOWKEYEncryptedPrivateKeyInfo));
if(epki == NULL)
goto loser;
rv = SEC_ASN1DecodeItem(poolp, epki,
nsslowkey_EncryptedPrivateKeyInfoTemplate, &dbkey->derPK);
if(rv == SECFailure)
goto loser;
algorithm = SECOID_GetAlgorithmTag(&epki->algorithm);
/* let success fall through */
loser:
if(poolp != NULL)
PORT_FreeArena(poolp, PR_TRUE);\
if(dbkey != NULL)
sec_destroy_dbkey(dbkey);
return algorithm;
}
#endif
/*
* Derive an RC4 key from a password key and a salt. This
* was the method to used to encrypt keys in the version 2?
* database
*/
SECItem *
seckey_create_rc4_key(SECItem *pwitem, SECItem *salt)
{
MD5Context *md5 = NULL;
unsigned int part;
SECStatus rv = SECFailure;
SECItem *key = NULL;
key = (SECItem *)PORT_ZAlloc(sizeof(SECItem));
if(key != NULL)
{
key->data = (unsigned char *)PORT_ZAlloc(sizeof(unsigned char) *
MD5_LENGTH);
key->len = MD5_LENGTH;
if(key->data != NULL)
{
md5 = MD5_NewContext();
if ( md5 != NULL )
{
MD5_Begin(md5);
MD5_Update(md5, salt->data, salt->len);
MD5_Update(md5, pwitem->data, pwitem->len);
MD5_End(md5, key->data, &part, MD5_LENGTH);
MD5_DestroyContext(md5, PR_TRUE);
rv = SECSuccess;
}
}
if(rv != SECSuccess)
{
SECITEM_FreeItem(key, PR_TRUE);
key = NULL;
}
}
return key;
}
SECItem *
seckey_create_rc4_salt(void)
{
SECItem *salt = NULL;
SECStatus rv = SECFailure;
salt = (SECItem *)PORT_ZAlloc(sizeof(SECItem));
if(salt == NULL)
return NULL;
salt->data = (unsigned char *)PORT_ZAlloc(sizeof(unsigned char) *
SALT_LENGTH);
if(salt->data != NULL)
{
salt->len = SALT_LENGTH;
RNG_GenerateGlobalRandomBytes(salt->data, salt->len);
rv = SECSuccess;
}
if(rv == SECFailure)
{
SECITEM_FreeItem(salt, PR_TRUE);
salt = NULL;
}
return salt;
}
SECItem *
seckey_rc4_decode(SECItem *key, SECItem *src)
{
SECItem *dest = NULL;
RC4Context *ctxt = NULL;
SECStatus rv = SECFailure;
if((key == NULL) || (src == NULL))
return NULL;
dest = (SECItem *)PORT_ZAlloc(sizeof(SECItem));
if(dest == NULL)
return NULL;
dest->data = (unsigned char *)PORT_ZAlloc(sizeof(unsigned char) *
(src->len + 64)); /* TNH - padding? */
if(dest->data != NULL)
{
ctxt = RC4_CreateContext(key->data, key->len);
if(ctxt != NULL)
{
rv = RC4_Decrypt(ctxt, dest->data, &dest->len,
src->len + 64, src->data, src->len);
RC4_DestroyContext(ctxt, PR_TRUE);
}
}
if(rv == SECFailure)
if(dest != NULL)
{
SECITEM_FreeItem(dest, PR_TRUE);
dest = NULL;
}
return dest;
}
#ifdef EC_DEBUG
#define SEC_PRINT(str1, str2, num, sitem) \
printf("pkcs11c.c:%s:%s (keytype=%d) [len=%d]\n", \
str1, str2, num, sitem->len); \
for (i = 0; i < sitem->len; i++) { \
printf("%02x:", sitem->data[i]); \
} \
printf("\n")
#else
#define SEC_PRINT(a, b, c, d)
#endif /* EC_DEBUG */
/* TNH - keydb is unused */
/* TNH - the pwitem should be the derived key for RC4 */
NSSLOWKEYEncryptedPrivateKeyInfo *
seckey_encrypt_private_key(
NSSLOWKEYPrivateKey *pk, SECItem *pwitem, NSSLOWKEYDBHandle *keydb,
SECOidTag algorithm, SECItem **salt)
{
NSSLOWKEYEncryptedPrivateKeyInfo *epki = NULL;
NSSLOWKEYPrivateKeyInfo *pki = NULL;
SECStatus rv = SECFailure;
PLArenaPool *temparena = NULL, *permarena = NULL;
SECItem *der_item = NULL;
NSSPKCS5PBEParameter *param = NULL;
SECItem *dummy = NULL, *dest = NULL;
SECAlgorithmID *algid;
#ifdef NSS_ENABLE_ECC
SECItem *fordebug = NULL;
int savelen;
int i;
#endif
*salt = NULL;
permarena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if(permarena == NULL)
return NULL;
temparena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if(temparena == NULL)
goto loser;
/* allocate structures */
epki = (NSSLOWKEYEncryptedPrivateKeyInfo *)PORT_ArenaZAlloc(permarena,
sizeof(NSSLOWKEYEncryptedPrivateKeyInfo));
pki = (NSSLOWKEYPrivateKeyInfo *)PORT_ArenaZAlloc(temparena,
sizeof(NSSLOWKEYPrivateKeyInfo));
der_item = (SECItem *)PORT_ArenaZAlloc(temparena, sizeof(SECItem));
if((epki == NULL) || (pki == NULL) || (der_item == NULL))
goto loser;
epki->arena = permarena;
/* setup private key info */
dummy = SEC_ASN1EncodeInteger(temparena, &(pki->version),
NSSLOWKEY_PRIVATE_KEY_INFO_VERSION);
if(dummy == NULL)
goto loser;
/* Encode the key, and set the algorithm (with params) */
switch (pk->keyType) {
case NSSLOWKEYRSAKey:
prepare_low_rsa_priv_key_for_asn1(pk);
dummy = SEC_ASN1EncodeItem(temparena, &(pki->privateKey), pk,
nsslowkey_RSAPrivateKeyTemplate);
if (dummy == NULL) {
rv = SECFailure;
goto loser;
}
rv = SECOID_SetAlgorithmID(temparena, &(pki->algorithm),
SEC_OID_PKCS1_RSA_ENCRYPTION, 0);
if (rv == SECFailure) {
goto loser;
}
break;
case NSSLOWKEYDSAKey:
prepare_low_dsa_priv_key_for_asn1(pk);
dummy = SEC_ASN1EncodeItem(temparena, &(pki->privateKey), pk,
nsslowkey_DSAPrivateKeyTemplate);
if (dummy == NULL) {
rv = SECFailure;
goto loser;
}
prepare_low_pqg_params_for_asn1(&pk->u.dsa.params);
dummy = SEC_ASN1EncodeItem(temparena, NULL, &pk->u.dsa.params,
nsslowkey_PQGParamsTemplate);
if (dummy == NULL) {
rv = SECFailure;
goto loser;
}
rv = SECOID_SetAlgorithmID(temparena, &(pki->algorithm),
SEC_OID_ANSIX9_DSA_SIGNATURE, dummy);
if (rv == SECFailure) {
goto loser;
}
break;
case NSSLOWKEYDHKey:
prepare_low_dh_priv_key_for_asn1(pk);
dummy = SEC_ASN1EncodeItem(temparena, &(pki->privateKey), pk,
nsslowkey_DHPrivateKeyTemplate);
if (dummy == NULL) {
rv = SECFailure;
goto loser;
}
rv = SECOID_SetAlgorithmID(temparena, &(pki->algorithm),
SEC_OID_X942_DIFFIE_HELMAN_KEY, dummy);
if (rv == SECFailure) {
goto loser;
}
break;
#ifdef NSS_ENABLE_ECC
case NSSLOWKEYECKey:
prepare_low_ec_priv_key_for_asn1(pk);
/* Public value is encoded as a bit string so adjust length
* to be in bits before ASN encoding and readjust
* immediately after.
*
* Since the SECG specification recommends not including the
* parameters as part of ECPrivateKey, we zero out the curveOID
* length before encoding and restore it later.
*/
pk->u.ec.publicValue.len <<= 3;
savelen = pk->u.ec.ecParams.curveOID.len;
pk->u.ec.ecParams.curveOID.len = 0;
dummy = SEC_ASN1EncodeItem(temparena, &(pki->privateKey), pk,
nsslowkey_ECPrivateKeyTemplate);
pk->u.ec.ecParams.curveOID.len = savelen;
pk->u.ec.publicValue.len >>= 3;
if (dummy == NULL) {
rv = SECFailure;
goto loser;
}
dummy = &pk->u.ec.ecParams.DEREncoding;
/* At this point dummy should contain the encoded params */
rv = SECOID_SetAlgorithmID(temparena, &(pki->algorithm),
SEC_OID_ANSIX962_EC_PUBLIC_KEY, dummy);
if (rv == SECFailure) {
goto loser;
}
fordebug = &(pki->privateKey);
SEC_PRINT("seckey_encrypt_private_key()", "PrivateKey",
pk->keyType, fordebug);
break;
#endif /* NSS_ENABLE_ECC */
default:
/* We don't support DH or Fortezza private keys yet */
PORT_Assert(PR_FALSE);
break;
}
/* setup encrypted private key info */
dummy = SEC_ASN1EncodeItem(temparena, der_item, pki,
nsslowkey_PrivateKeyInfoTemplate);
SEC_PRINT("seckey_encrypt_private_key()", "PrivateKeyInfo",
pk->keyType, der_item);
if(dummy == NULL) {
rv = SECFailure;
goto loser;
}
rv = SECFailure; /* assume failure */
*salt = seckey_create_rc4_salt();
if (*salt == NULL) {
goto loser;
}
param = nsspkcs5_NewParam(algorithm,*salt,1);
if (param == NULL) {
goto loser;
}
dest = nsspkcs5_CipherData(param, pwitem, der_item, PR_TRUE, NULL);
if (dest == NULL) {
goto loser;
}
rv = SECITEM_CopyItem(permarena, &epki->encryptedData, dest);
if (rv != SECSuccess) {
goto loser;
}
algid = nsspkcs5_CreateAlgorithmID(permarena, algorithm, param);
if (algid == NULL) {
rv = SECFailure;
goto loser;
}
rv = SECOID_CopyAlgorithmID(permarena, &epki->algorithm, algid);
SECOID_DestroyAlgorithmID(algid, PR_TRUE);
loser:
if(dest != NULL)
SECITEM_FreeItem(dest, PR_TRUE);
if(param != NULL)
nsspkcs5_DestroyPBEParameter(param);
/* let success fall through */
if(rv == SECFailure)
{
PORT_FreeArena(permarena, PR_TRUE);
epki = NULL;
if(*salt != NULL)
SECITEM_FreeItem(*salt, PR_TRUE);
}
if(temparena != NULL)
PORT_FreeArena(temparena, PR_TRUE);
return epki;
}
static SECStatus
seckey_put_private_key(NSSLOWKEYDBHandle *keydb, DBT *index, SECItem *pwitem,
NSSLOWKEYPrivateKey *pk, char *nickname, PRBool update,
SECOidTag algorithm)
{
NSSLOWKEYDBKey *dbkey = NULL;
NSSLOWKEYEncryptedPrivateKeyInfo *epki = NULL;
PLArenaPool *temparena = NULL, *permarena = NULL;
SECItem *dummy = NULL;
SECItem *salt = NULL;
SECStatus rv = SECFailure;
if((keydb == NULL) || (index == NULL) || (pwitem == NULL) ||
(pk == NULL))
return SECFailure;
permarena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if(permarena == NULL)
return SECFailure;
dbkey = (NSSLOWKEYDBKey *)PORT_ArenaZAlloc(permarena, sizeof(NSSLOWKEYDBKey));
if(dbkey == NULL)
goto loser;
dbkey->arena = permarena;
dbkey->nickname = nickname;
/* TNH - for RC4, the salt should be created here */
epki = seckey_encrypt_private_key(pk, pwitem, keydb, algorithm, &salt);
if(epki == NULL)
goto loser;
temparena = epki->arena;
if(salt != NULL)
{
rv = SECITEM_CopyItem(permarena, &(dbkey->salt), salt);
SECITEM_ZfreeItem(salt, PR_TRUE);
}
dummy = SEC_ASN1EncodeItem(permarena, &(dbkey->derPK), epki,
nsslowkey_EncryptedPrivateKeyInfoTemplate);
if(dummy == NULL)
rv = SECFailure;
else
rv = put_dbkey(keydb, index, dbkey, update);
/* let success fall through */
loser:
if(rv != SECSuccess)
if(permarena != NULL)
PORT_FreeArena(permarena, PR_TRUE);
if(temparena != NULL)
PORT_FreeArena(temparena, PR_TRUE);
return rv;
}
/*
* Store a key in the database, indexed by its public key modulus.
* Note that the nickname is optional. It was only used by keyutil.
*/
SECStatus
nsslowkey_StoreKeyByPublicKeyAlg(NSSLOWKEYDBHandle *handle,
NSSLOWKEYPrivateKey *privkey,
SECItem *pubKeyData,
char *nickname,
SECItem *pwitem,
SECOidTag algorithm,
PRBool update)
{
DBT namekey;
SECStatus rv;
if (handle == NULL) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
return(SECFailure);
}
/* set up db key and data */
namekey.data = pubKeyData->data;
namekey.size = pubKeyData->len;
/* encrypt the private key */
rv = seckey_put_private_key(handle, &namekey, pwitem, privkey, nickname,
update, algorithm);
return(rv);
}
NSSLOWKEYPrivateKey *
seckey_decrypt_private_key(NSSLOWKEYEncryptedPrivateKeyInfo *epki,
SECItem *pwitem)
{
NSSLOWKEYPrivateKey *pk = NULL;
NSSLOWKEYPrivateKeyInfo *pki = NULL;
SECStatus rv = SECFailure;
SECOidTag algorithm;
PLArenaPool *temparena = NULL, *permarena = NULL;
SECItem *salt = NULL, *dest = NULL, *key = NULL;
NSSPKCS5PBEParameter *param;
#ifdef NSS_ENABLE_ECC
ECPrivateKey *ecpriv;
SECItem *fordebug = NULL;
int i;
#endif
if((epki == NULL) || (pwitem == NULL))
goto loser;
temparena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
permarena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
if((temparena == NULL) || (permarena == NULL))
goto loser;
/* allocate temporary items */
pki = (NSSLOWKEYPrivateKeyInfo *)PORT_ArenaZAlloc(temparena,
sizeof(NSSLOWKEYPrivateKeyInfo));
/* allocate permanent arena items */
pk = (NSSLOWKEYPrivateKey *)PORT_ArenaZAlloc(permarena,
sizeof(NSSLOWKEYPrivateKey));
if((pk == NULL) || (pki == NULL))
goto loser;
pk->arena = permarena;
algorithm = SECOID_GetAlgorithmTag(&(epki->algorithm));
switch(algorithm)
{
case SEC_OID_RC4:
salt = SECITEM_DupItem(&epki->algorithm.parameters);
if(salt != NULL)
{
key = seckey_create_rc4_key(pwitem, salt);
if(key != NULL)
{
dest = seckey_rc4_decode(key, &epki->encryptedData);
}
}
if(salt != NULL)
SECITEM_ZfreeItem(salt, PR_TRUE);
if(key != NULL)
SECITEM_ZfreeItem(key, PR_TRUE);
break;
default:
/* we depend on the fact that if this key was encoded with
* DES, that the pw was also encoded with DES, so we don't have
* to do the update here, the password code will handle it. */
param = nsspkcs5_AlgidToParam(&epki->algorithm);
if (param == NULL) {
break;
}
dest = nsspkcs5_CipherData(param, pwitem, &epki->encryptedData,
PR_FALSE, NULL);
nsspkcs5_DestroyPBEParameter(param);
break;
}
if(dest != NULL)
{
SECItem newPrivateKey;
SECItem newAlgParms;
SEC_PRINT("seckey_decrypt_private_key()", "PrivateKeyInfo", -1,
dest);
rv = SEC_QuickDERDecodeItem(temparena, pki,
nsslowkey_PrivateKeyInfoTemplate, dest);
if(rv == SECSuccess)
{
switch(SECOID_GetAlgorithmTag(&pki->algorithm)) {
case SEC_OID_X500_RSA_ENCRYPTION:
case SEC_OID_PKCS1_RSA_ENCRYPTION:
pk->keyType = NSSLOWKEYRSAKey;
prepare_low_rsa_priv_key_for_asn1(pk);
if (SECSuccess != SECITEM_CopyItem(permarena, &newPrivateKey,
&pki->privateKey) ) break;
rv = SEC_QuickDERDecodeItem(permarena, pk,
nsslowkey_RSAPrivateKeyTemplate,
&newPrivateKey);
break;
case SEC_OID_ANSIX9_DSA_SIGNATURE:
pk->keyType = NSSLOWKEYDSAKey;
prepare_low_dsa_priv_key_for_asn1(pk);
if (SECSuccess != SECITEM_CopyItem(permarena, &newPrivateKey,
&pki->privateKey) ) break;
rv = SEC_QuickDERDecodeItem(permarena, pk,
nsslowkey_DSAPrivateKeyTemplate,
&newPrivateKey);
if (rv != SECSuccess)
goto loser;
prepare_low_pqg_params_for_asn1(&pk->u.dsa.params);
if (SECSuccess != SECITEM_CopyItem(permarena, &newAlgParms,
&pki->algorithm.parameters) ) break;
rv = SEC_QuickDERDecodeItem(permarena, &pk->u.dsa.params,
nsslowkey_PQGParamsTemplate,
&newAlgParms);
break;
case SEC_OID_X942_DIFFIE_HELMAN_KEY:
pk->keyType = NSSLOWKEYDHKey;
prepare_low_dh_priv_key_for_asn1(pk);
if (SECSuccess != SECITEM_CopyItem(permarena, &newPrivateKey,
&pki->privateKey) ) break;
rv = SEC_QuickDERDecodeItem(permarena, pk,
nsslowkey_DHPrivateKeyTemplate,
&newPrivateKey);
break;
#ifdef NSS_ENABLE_ECC
case SEC_OID_ANSIX962_EC_PUBLIC_KEY:
pk->keyType = NSSLOWKEYECKey;
prepare_low_ec_priv_key_for_asn1(pk);
fordebug = &pki->privateKey;
SEC_PRINT("seckey_decrypt_private_key()", "PrivateKey",
pk->keyType, fordebug);
if (SECSuccess != SECITEM_CopyItem(permarena, &newPrivateKey,
&pki->privateKey) ) break;
rv = SEC_QuickDERDecodeItem(permarena, pk,
nsslowkey_ECPrivateKeyTemplate,
&newPrivateKey);
if (rv != SECSuccess)
goto loser;
prepare_low_ecparams_for_asn1(&pk->u.ec.ecParams);
rv = SECITEM_CopyItem(permarena,
&pk->u.ec.ecParams.DEREncoding,
&pki->algorithm.parameters);
if (rv != SECSuccess)
goto loser;
/* Fill out the rest of EC params */
rv = EC_FillParams(permarena, &pk->u.ec.ecParams.DEREncoding,
&pk->u.ec.ecParams);
/*
* NOTE: Encoding of the publicValue is optional
* so we need to be able to regenerate the publicValue
* from the base point and the private key.
*
* XXX This part of the code needs more testing.
*/
if (pk->u.ec.publicValue.len == 0) {
rv = EC_NewKeyFromSeed(&pk->u.ec.ecParams,
&ecpriv, pk->u.ec.privateValue.data,
pk->u.ec.privateValue.len);
if (rv == SECSuccess) {
SECITEM_CopyItem(permarena, &pk->u.ec.publicValue,
&(ecpriv->publicValue));
PORT_FreeArena(ecpriv->ecParams.arena, PR_TRUE);
}
} else {
/* If publicValue was filled as part of DER decoding,
* change length in bits to length in bytes.
*/
pk->u.ec.publicValue.len >>= 3;
}
break;
#endif /* NSS_ENABLE_ECC */
default:
rv = SECFailure;
break;
}
}
else if(PORT_GetError() == SEC_ERROR_BAD_DER)
{
PORT_SetError(SEC_ERROR_BAD_PASSWORD);
goto loser;
}
}
/* let success fall through */
loser:
if(temparena != NULL)
PORT_FreeArena(temparena, PR_TRUE);
if(dest != NULL)
SECITEM_ZfreeItem(dest, PR_TRUE);
if(rv != SECSuccess)
{
if(permarena != NULL)
PORT_FreeArena(permarena, PR_TRUE);
pk = NULL;
}
return pk;
}
static NSSLOWKEYPrivateKey *
seckey_decode_encrypted_private_key(NSSLOWKEYDBKey *dbkey, SECItem *pwitem)
{
NSSLOWKEYPrivateKey *pk = NULL;
NSSLOWKEYEncryptedPrivateKeyInfo *epki;
PLArenaPool *temparena = NULL;
SECStatus rv;
SECOidTag algorithm;
if( ( dbkey == NULL ) || ( pwitem == NULL ) ) {
return NULL;
}
temparena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if(temparena == NULL) {
return NULL;
}
epki = (NSSLOWKEYEncryptedPrivateKeyInfo *)
PORT_ArenaZAlloc(temparena, sizeof(NSSLOWKEYEncryptedPrivateKeyInfo));
if(epki == NULL) {
goto loser;
}
rv = SEC_QuickDERDecodeItem(temparena, epki,
nsslowkey_EncryptedPrivateKeyInfoTemplate,
&(dbkey->derPK));
if(rv != SECSuccess) {
goto loser;
}
algorithm = SECOID_GetAlgorithmTag(&(epki->algorithm));
switch(algorithm)
{
case SEC_OID_RC4:
/* TNH - this code should derive the actual RC4 key from salt and
pwitem */
rv = SECITEM_CopyItem(temparena, &(epki->algorithm.parameters),
&(dbkey->salt));
break;
default:
break;
}
pk = seckey_decrypt_private_key(epki, pwitem);
/* let success fall through */
loser:
PORT_FreeArena(temparena, PR_TRUE);
return pk;
}
NSSLOWKEYPrivateKey *
seckey_get_private_key(NSSLOWKEYDBHandle *keydb, DBT *index, char **nickname,
SECItem *pwitem)
{
NSSLOWKEYDBKey *dbkey = NULL;
NSSLOWKEYPrivateKey *pk = NULL;
if( ( keydb == NULL ) || ( index == NULL ) || ( pwitem == NULL ) ) {
return NULL;
}
dbkey = get_dbkey(keydb, index);
if(dbkey == NULL) {
goto loser;
}
if ( nickname ) {
if ( dbkey->nickname && ( dbkey->nickname[0] != 0 ) ) {
*nickname = PORT_Strdup(dbkey->nickname);
} else {
*nickname = NULL;
}
}
pk = seckey_decode_encrypted_private_key(dbkey, pwitem);
/* let success fall through */
loser:
if ( dbkey != NULL ) {
sec_destroy_dbkey(dbkey);
}
return pk;
}
/*
* used by pkcs11 to import keys into it's object format... In the future
* we really need a better way to tie in...
*/
NSSLOWKEYPrivateKey *
nsslowkey_DecryptKey(DBT *key, SECItem *pwitem,
NSSLOWKEYDBHandle *handle) {
return seckey_get_private_key(handle,key,NULL,pwitem);
}
/*
* Find a key in the database, indexed by its public key modulus
* This is used to find keys that have been stored before their
* certificate arrives. Once the certificate arrives the key
* is looked up by the public modulus in the certificate, and the
* re-stored by its nickname.
*/
NSSLOWKEYPrivateKey *
nsslowkey_FindKeyByPublicKey(NSSLOWKEYDBHandle *handle, SECItem *modulus,
SECItem *pwitem)
{
DBT namekey;
NSSLOWKEYPrivateKey *pk = NULL;
if (handle == NULL) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
return NULL;
}
/* set up db key */
namekey.data = modulus->data;
namekey.size = modulus->len;
pk = seckey_get_private_key(handle, &namekey, NULL, pwitem);
/* no need to free dbkey, since its on the stack, and the data it
* points to is owned by the database
*/
return(pk);
}
char *
nsslowkey_FindKeyNicknameByPublicKey(NSSLOWKEYDBHandle *handle,
SECItem *modulus, SECItem *pwitem)
{
DBT namekey;
NSSLOWKEYPrivateKey *pk = NULL;
char *nickname = NULL;
if (handle == NULL) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
return NULL;
}
/* set up db key */
namekey.data = modulus->data;
namekey.size = modulus->len;
pk = seckey_get_private_key(handle, &namekey, &nickname, pwitem);
if (pk) {
nsslowkey_DestroyPrivateKey(pk);
}
/* no need to free dbkey, since its on the stack, and the data it
* points to is owned by the database
*/
return(nickname);
}
/* ===== ENCODING ROUTINES ===== */
static SECStatus
encodePWCheckEntry(PLArenaPool *arena, SECItem *entry, SECOidTag alg,
SECItem *encCheck)
{
SECOidData *oidData;
SECStatus rv;
oidData = SECOID_FindOIDByTag(alg);
if ( oidData == NULL ) {
rv = SECFailure;
goto loser;
}
entry->len = 1 + oidData->oid.len + encCheck->len;
if ( arena ) {
entry->data = (unsigned char *)PORT_ArenaAlloc(arena, entry->len);
} else {
entry->data = (unsigned char *)PORT_Alloc(entry->len);
}
if ( entry->data == NULL ) {
goto loser;
}
/* first length of oid */
entry->data[0] = (unsigned char)oidData->oid.len;
/* next oid itself */
PORT_Memcpy(&entry->data[1], oidData->oid.data, oidData->oid.len);
/* finally the encrypted check string */
PORT_Memcpy(&entry->data[1+oidData->oid.len], encCheck->data,
encCheck->len);
return(SECSuccess);
loser:
return(SECFailure);
}
/*
* Set up the password checker in the key database.
* This is done by encrypting a known plaintext with the user's key.
*/
SECStatus
nsslowkey_SetKeyDBPasswordAlg(NSSLOWKEYDBHandle *handle,
SECItem *pwitem, SECOidTag algorithm)
{
DBT checkkey;
NSSPKCS5PBEParameter *param = NULL;
SECStatus rv = SECFailure;
NSSLOWKEYDBKey *dbkey = NULL;
PLArenaPool *arena;
SECItem *salt = NULL;
SECItem *dest = NULL, test_key;
if (handle == NULL) {
return(SECFailure);
}
arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if ( arena == NULL ) {
rv = SECFailure;
goto loser;
}
dbkey = (NSSLOWKEYDBKey *)PORT_ArenaZAlloc(arena, sizeof(NSSLOWKEYDBKey));
if ( dbkey == NULL ) {
rv = SECFailure;
goto loser;
}
dbkey->arena = arena;
/* encrypt key */
checkkey.data = test_key.data = (unsigned char *)KEYDB_PW_CHECK_STRING;
checkkey.size = test_key.len = KEYDB_PW_CHECK_LEN;
salt = seckey_create_rc4_salt();
if(salt == NULL) {
rv = SECFailure;
goto loser;
}
param = nsspkcs5_NewParam(algorithm, salt, 1);
if (param == NULL) {
rv = SECFailure;
goto loser;
}
dest = nsspkcs5_CipherData(param, pwitem, &test_key, PR_TRUE, NULL);
if (dest == NULL)
{
rv = SECFailure;
goto loser;
}
rv = SECITEM_CopyItem(arena, &dbkey->salt, salt);
if (rv == SECFailure) {
goto loser;
}
rv = encodePWCheckEntry(arena, &dbkey->derPK, algorithm, dest);
if ( rv != SECSuccess ) {
goto loser;
}
rv = put_dbkey(handle, &checkkey, dbkey, PR_TRUE);
/* let success fall through */
loser:
if ( arena != NULL ) {
PORT_FreeArena(arena, PR_TRUE);
}
if ( dest != NULL ) {
SECITEM_ZfreeItem(dest, PR_TRUE);
}
if ( salt != NULL ) {
SECITEM_ZfreeItem(salt, PR_TRUE);
}
if (param != NULL) {
nsspkcs5_DestroyPBEParameter(param);
}
return(rv);
}
static SECStatus
seckey_CheckKeyDB1Password(NSSLOWKEYDBHandle *handle, SECItem *pwitem)
{
SECStatus rv = SECFailure;
keyList keylist;
keyNode *node = NULL;
NSSLOWKEYPrivateKey *privkey = NULL;
/*
* first find a key
*/
/* traverse the database, collecting the keys of all records */
keylist.arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if ( keylist.arena == NULL )
{
PORT_SetError(SEC_ERROR_NO_MEMORY);
return(SECFailure);
}
keylist.head = NULL;
/* TNH - TraverseKeys should not be public, since it exposes
the underlying DBT data type. */
rv = nsslowkey_TraverseKeys(handle, sec_add_key_to_list, (void *)&keylist);
if ( rv != SECSuccess )
goto done;
/* just get the first key from the list */
node = keylist.head;
/* no private keys, accept any password */
if (node == NULL) {
rv = SECSuccess;
goto done;
}
privkey = seckey_get_private_key(handle, &node->key, NULL, pwitem);
if (privkey == NULL) {
rv = SECFailure;
goto done;
}
/* if we can decrypt the private key, then we had the correct password */
rv = SECSuccess;
nsslowkey_DestroyPrivateKey(privkey);
done:
/* free the arena */
if ( keylist.arena ) {
PORT_FreeArena(keylist.arena, PR_FALSE);
}
return(rv);
}
/*
* check to see if the user has typed the right password
*/
SECStatus
nsslowkey_CheckKeyDBPassword(NSSLOWKEYDBHandle *handle, SECItem *pwitem)
{
DBT checkkey;
DBT checkdata;
NSSPKCS5PBEParameter *param = NULL;
SECStatus rv = SECFailure;
NSSLOWKEYDBKey *dbkey = NULL;
SECItem *key = NULL;
SECItem *dest = NULL;
SECOidTag algorithm;
SECItem oid;
SECItem encstring;
PRBool update = PR_FALSE;
int ret;
if (handle == NULL) {
goto loser;
}
checkkey.data = KEYDB_PW_CHECK_STRING;
checkkey.size = KEYDB_PW_CHECK_LEN;
dbkey = get_dbkey(handle, &checkkey);
if ( dbkey == NULL ) {
checkkey.data = KEYDB_FAKE_PW_CHECK_STRING;
checkkey.size = KEYDB_FAKE_PW_CHECK_LEN;
ret = keydb_Get(handle, &checkkey, &checkdata, 0 );
if (ret) {
goto loser;
}
/* if we have the fake PW_CHECK, then try to decode the key
* rather than the pwcheck item.
*/
rv = seckey_CheckKeyDB1Password(handle,pwitem);
if (rv == SECSuccess) {
/* OK we have enough to complete our conversion */
nsslowkey_UpdateKeyDBPass2(handle,pwitem);
}
return rv;
}
/* build the oid item */
oid.len = dbkey->derPK.data[0];
oid.data = &dbkey->derPK.data[1];
/* make sure entry is the correct length
* since we are probably using a block cipher, the block will be
* padded, so we may get a bit more than the exact size we need.
*/
if ( dbkey->derPK.len < (KEYDB_PW_CHECK_LEN + 1 + oid.len ) ) {
goto loser;
}
/* find the algorithm tag */
algorithm = SECOID_FindOIDTag(&oid);
/* make a secitem of the encrypted check string */
encstring.len = dbkey->derPK.len - ( oid.len + 1 );
encstring.data = &dbkey->derPK.data[oid.len+1];
encstring.type = 0;
switch(algorithm)
{
case SEC_OID_RC4:
key = seckey_create_rc4_key(pwitem, &dbkey->salt);
if(key != NULL) {
dest = seckey_rc4_decode(key, &encstring);
SECITEM_FreeItem(key, PR_TRUE);
}
break;
default:
param = nsspkcs5_NewParam(algorithm, &dbkey->salt, 1);
if (param != NULL) {
/* Decrypt - this function implements a workaround for
* a previous coding error. It will decrypt values using
* DES rather than 3DES, if the initial try at 3DES
* decryption fails. In this case, the update flag is
* set to TRUE. This indication is used later to force
* an update of the database to "real" 3DES encryption.
*/
dest = nsspkcs5_CipherData(param, pwitem,
&encstring, PR_FALSE, &update);
nsspkcs5_DestroyPBEParameter(param);
}
break;
}
if(dest == NULL) {
goto loser;
}
if ((dest->len == KEYDB_PW_CHECK_LEN) &&
(PORT_Memcmp(dest->data,
KEYDB_PW_CHECK_STRING, KEYDB_PW_CHECK_LEN) == 0)) {
rv = SECSuccess;
/* we succeeded */
if ( algorithm == SEC_OID_RC4 ) {
/* partially updated database */
nsslowkey_UpdateKeyDBPass2(handle, pwitem);
}
/* Force an update of the password to remove the incorrect DES
* encryption (see the note above)
*/
if (update &&
(algorithm == SEC_OID_PKCS12_PBE_WITH_SHA1_AND_TRIPLE_DES_CBC)) {
/* data base was encoded with DES not triple des, fix it */
nsslowkey_UpdateKeyDBPass2(handle,pwitem);
}
}
loser:
sec_destroy_dbkey(dbkey);
if(dest != NULL) {
SECITEM_ZfreeItem(dest, PR_TRUE);
}
return(rv);
}
/*
* Change the database password and/or algorithm. This internal
* routine does not check the old password. That must be done by
* the caller.
*/
static SECStatus
ChangeKeyDBPasswordAlg(NSSLOWKEYDBHandle *handle,
SECItem *oldpwitem, SECItem *newpwitem,
SECOidTag new_algorithm)
{
SECStatus rv;
keyList keylist;
keyNode *node = NULL;
NSSLOWKEYPrivateKey *privkey = NULL;
char *nickname;
DBT newkey;
int ret;
/* traverse the database, collecting the keys of all records */
keylist.arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if ( keylist.arena == NULL )
{
PORT_SetError(SEC_ERROR_NO_MEMORY);
return(SECFailure);
}
keylist.head = NULL;
rv = db_BeginTransaction(handle->db);
if (rv != SECSuccess) {
goto loser;
}
/* TNH - TraverseKeys should not be public, since it exposes
the underlying DBT data type. */
rv = nsslowkey_TraverseKeys(handle, sec_add_key_to_list, (void *)&keylist);
if ( rv != SECSuccess )
goto loser;
/* walk the list, re-encrypting each entry */
node = keylist.head;
while ( node != NULL )
{
privkey = seckey_get_private_key(handle, &node->key, &nickname,
oldpwitem);
if (privkey == NULL) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
rv = SECFailure;
goto loser;
}
/* delete the old record */
ret = keydb_Del(handle, &node->key, 0);
if ( ret ) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
rv = SECFailure;
goto loser;
}
/* get the public key, which we use as the database index */
switch (privkey->keyType) {
case NSSLOWKEYRSAKey:
newkey.data = privkey->u.rsa.modulus.data;
newkey.size = privkey->u.rsa.modulus.len;
break;
case NSSLOWKEYDSAKey:
newkey.data = privkey->u.dsa.publicValue.data;
newkey.size = privkey->u.dsa.publicValue.len;
break;
case NSSLOWKEYDHKey:
newkey.data = privkey->u.dh.publicValue.data;
newkey.size = privkey->u.dh.publicValue.len;
break;
#ifdef NSS_ENABLE_ECC
case NSSLOWKEYECKey:
newkey.data = privkey->u.ec.publicValue.data;
newkey.size = privkey->u.ec.publicValue.len;
break;
#endif /* NSS_ENABLE_ECC */
default:
/* should we continue here and loose the key? */
PORT_SetError(SEC_ERROR_BAD_DATABASE);
rv = SECFailure;
goto loser;
}
rv = seckey_put_private_key(handle, &newkey, newpwitem, privkey,
nickname, PR_TRUE, new_algorithm);
if ( rv != SECSuccess )
{
PORT_SetError(SEC_ERROR_BAD_DATABASE);
rv = SECFailure;
goto loser;
}
/* next node */
node = node->next;
}
rv = nsslowkey_SetKeyDBPasswordAlg(handle, newpwitem, new_algorithm);
loser:
db_FinishTransaction(handle->db,rv != SECSuccess);
/* free the arena */
if ( keylist.arena ) {
PORT_FreeArena(keylist.arena, PR_FALSE);
}
return(rv);
}
/*
* Re-encrypt the entire key database with a new password.
* NOTE: The really should create a new database rather than doing it
* in place in the original
*/
SECStatus
nsslowkey_ChangeKeyDBPassword(NSSLOWKEYDBHandle *handle,
SECItem *oldpwitem, SECItem *newpwitem)
{
SECStatus rv;
if (handle == NULL) {
PORT_SetError(SEC_ERROR_BAD_DATABASE);
rv = SECFailure;
goto loser;
}
rv = nsslowkey_CheckKeyDBPassword(handle, oldpwitem);
if ( rv != SECSuccess ) {
return(SECFailure); /* return rv? */
}
rv = ChangeKeyDBPasswordAlg(handle, oldpwitem, newpwitem,
nsslowkey_GetDefaultKeyDBAlg());
loser:
return(rv);
}
#define MAX_DB_SIZE 0xffff
/*
* Clear out all the keys in the existing database
*/
SECStatus
nsslowkey_ResetKeyDB(NSSLOWKEYDBHandle *handle)
{
SECStatus rv;
int ret;
int errors = 0;
if ( handle->db == NULL ) {
return(SECSuccess);
}
if (handle->readOnly) {
/* set an error code */
return SECFailure;
}
if (handle->appname == NULL && handle->dbname == NULL) {
return SECFailure;
}
keydb_Close(handle);
if (handle->appname) {
handle->db=
rdbopen(handle->appname, handle->dbname, "key", NO_CREATE, NULL);
} else {
handle->db = dbopen( handle->dbname, NO_CREATE, 0600, DB_HASH, 0 );
}
if (handle->db == NULL) {
/* set an error code */
return SECFailure;
}
rv = makeGlobalVersion(handle);
if ( rv != SECSuccess ) {
errors++;
goto done;
}
if (handle->global_salt) {
rv = StoreKeyDBGlobalSalt(handle);
} else {
rv = makeGlobalSalt(handle);
if ( rv == SECSuccess ) {
handle->global_salt = GetKeyDBGlobalSalt(handle);
}
}
if ( rv != SECSuccess ) {
errors++;
}
done:
/* sync the database */
ret = keydb_Sync(handle, 0);
db_InitComplete(handle->db);
return (errors == 0 ? SECSuccess : SECFailure);
}
static int
keydb_Get(NSSLOWKEYDBHandle *kdb, DBT *key, DBT *data, unsigned int flags)
{
PRStatus prstat;
int ret;
PRLock *kdbLock = kdb->lock;
DB *db = kdb->db;
PORT_Assert(kdbLock != NULL);
PZ_Lock(kdbLock);
ret = (* db->get)(db, key, data, flags);
prstat = PZ_Unlock(kdbLock);
return(ret);
}
static int
keydb_Put(NSSLOWKEYDBHandle *kdb, DBT *key, DBT *data, unsigned int flags)
{
PRStatus prstat;
int ret = 0;
PRLock *kdbLock = kdb->lock;
DB *db = kdb->db;
PORT_Assert(kdbLock != NULL);
PZ_Lock(kdbLock);
ret = (* db->put)(db, key, data, flags);
prstat = PZ_Unlock(kdbLock);
return(ret);
}
static int
keydb_Sync(NSSLOWKEYDBHandle *kdb, unsigned int flags)
{
PRStatus prstat;
int ret;
PRLock *kdbLock = kdb->lock;
DB *db = kdb->db;
PORT_Assert(kdbLock != NULL);
PZ_Lock(kdbLock);
ret = (* db->sync)(db, flags);
prstat = PZ_Unlock(kdbLock);
return(ret);
}
static int
keydb_Del(NSSLOWKEYDBHandle *kdb, DBT *key, unsigned int flags)
{
PRStatus prstat;
int ret;
PRLock *kdbLock = kdb->lock;
DB *db = kdb->db;
PORT_Assert(kdbLock != NULL);
PZ_Lock(kdbLock);
ret = (* db->del)(db, key, flags);
prstat = PZ_Unlock(kdbLock);
return(ret);
}
static int
keydb_Seq(NSSLOWKEYDBHandle *kdb, DBT *key, DBT *data, unsigned int flags)
{
PRStatus prstat;
int ret;
PRLock *kdbLock = kdb->lock;
DB *db = kdb->db;
PORT_Assert(kdbLock != NULL);
PZ_Lock(kdbLock);
ret = (* db->seq)(db, key, data, flags);
prstat = PZ_Unlock(kdbLock);
return(ret);
}
static void
keydb_Close(NSSLOWKEYDBHandle *kdb)
{
PRStatus prstat;
PRLock *kdbLock = kdb->lock;
DB *db = kdb->db;
PORT_Assert(kdbLock != NULL);
PZ_Lock(kdbLock);
(* db->close)(db);
prstat = PZ_Unlock(kdbLock);
return;
}