mirror of
https://github.com/classilla/tenfourfox.git
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1273 lines
34 KiB
C
1273 lines
34 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* The following code handles the storage of PKCS 11 modules used by the
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* NSS. For the rest of NSS, only one kind of database handle exists:
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*
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* SFTKDBHandle
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*
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* There is one SFTKDBHandle for the each key database and one for each cert
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* database. These databases are opened as associated pairs, one pair per
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* slot. SFTKDBHandles are reference counted objects.
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*
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* Each SFTKDBHandle points to a low level database handle (SDB). This handle
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* represents the underlying physical database. These objects are not
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* reference counted, an are 'owned' by their respective SFTKDBHandles.
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*
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*
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*/
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#include "sftkdb.h"
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#include "sftkdbti.h"
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#include "pkcs11t.h"
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#include "pkcs11i.h"
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#include "sdb.h"
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#include "prprf.h"
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#include "secasn1.h"
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#include "pratom.h"
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#include "blapi.h"
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#include "secoid.h"
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#include "lowpbe.h"
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#include "secdert.h"
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#include "prsystem.h"
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#include "lgglue.h"
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#include "secerr.h"
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#include "softoken.h"
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/******************************************************************
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*
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* Key DB password handling functions
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*
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* These functions manage the key db password (set, reset, initialize, use).
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*
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* The key is managed on 'this side' of the database. All private data is
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* encrypted before it is sent to the database itself. Besides PBE's, the
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* database management code can also mix in various fixed keys so the data
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* in the database is no longer considered 'plain text'.
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*/
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/* take string password and turn it into a key. The key is dependent
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* on a global salt entry acquired from the database. This salted
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* value will be based to a pkcs5 pbe function before it is used
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* in an actual encryption */
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static SECStatus
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sftkdb_passwordToKey(SFTKDBHandle *keydb, SECItem *salt,
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const char *pw, SECItem *key)
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{
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SHA1Context *cx = NULL;
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SECStatus rv = SECFailure;
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key->data = PORT_Alloc(SHA1_LENGTH);
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if (key->data == NULL) {
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goto loser;
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}
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key->len = SHA1_LENGTH;
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cx = SHA1_NewContext();
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if ( cx == NULL) {
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goto loser;
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}
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SHA1_Begin(cx);
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if (salt && salt->data ) {
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SHA1_Update(cx, salt->data, salt->len);
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}
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SHA1_Update(cx, (unsigned char *)pw, PORT_Strlen(pw));
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SHA1_End(cx, key->data, &key->len, key->len);
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rv = SECSuccess;
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loser:
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if (cx) {
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SHA1_DestroyContext(cx, PR_TRUE);
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}
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if (rv != SECSuccess) {
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if (key->data != NULL) {
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PORT_ZFree(key->data,key->len);
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}
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key->data = NULL;
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}
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return rv;
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}
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/*
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* Cipher text stored in the database contains 3 elements:
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* 1) an identifier describing the encryption algorithm.
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* 2) an entry specific salt value.
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* 3) the encrypted value.
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*
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* The following data structure represents the encrypted data in a decoded
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* (but still encrypted) form.
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*/
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typedef struct sftkCipherValueStr sftkCipherValue;
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struct sftkCipherValueStr {
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PLArenaPool *arena;
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SECOidTag alg;
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NSSPKCS5PBEParameter *param;
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SECItem salt;
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SECItem value;
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};
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#define SFTK_CIPHERTEXT_VERSION 3
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struct SFTKDBEncryptedDataInfoStr {
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SECAlgorithmID algorithm;
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SECItem encryptedData;
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};
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typedef struct SFTKDBEncryptedDataInfoStr SFTKDBEncryptedDataInfo;
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SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
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const SEC_ASN1Template sftkdb_EncryptedDataInfoTemplate[] = {
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{ SEC_ASN1_SEQUENCE,
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0, NULL, sizeof(SFTKDBEncryptedDataInfo) },
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{ SEC_ASN1_INLINE | SEC_ASN1_XTRN ,
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offsetof(SFTKDBEncryptedDataInfo,algorithm),
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SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
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{ SEC_ASN1_OCTET_STRING,
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offsetof(SFTKDBEncryptedDataInfo,encryptedData) },
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{ 0 }
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};
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/*
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* This parses the cipherText into cipher value. NOTE: cipherValue will point
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* to data in cipherText, if cipherText is freed, cipherValue will be invalid.
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*/
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static SECStatus
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sftkdb_decodeCipherText(SECItem *cipherText, sftkCipherValue *cipherValue)
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{
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PLArenaPool *arena = NULL;
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SFTKDBEncryptedDataInfo edi;
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SECStatus rv;
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arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
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if (arena == NULL) {
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return SECFailure;
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}
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cipherValue->arena = NULL;
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cipherValue->param = NULL;
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rv = SEC_QuickDERDecodeItem(arena, &edi, sftkdb_EncryptedDataInfoTemplate,
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cipherText);
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if (rv != SECSuccess) {
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goto loser;
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}
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cipherValue->alg = SECOID_GetAlgorithmTag(&edi.algorithm);
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cipherValue->param = nsspkcs5_AlgidToParam(&edi.algorithm);
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if (cipherValue->param == NULL) {
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goto loser;
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}
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cipherValue->value = edi.encryptedData;
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cipherValue->arena = arena;
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return SECSuccess;
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loser:
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if (cipherValue->param) {
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nsspkcs5_DestroyPBEParameter(cipherValue->param);
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cipherValue->param = NULL;
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}
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if (arena) {
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PORT_FreeArena(arena,PR_FALSE);
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}
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return SECFailure;
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}
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/*
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* unlike decode, Encode actually allocates a SECItem the caller must free
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* The caller can pass an optional arena to to indicate where to place
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* the resultant cipherText.
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*/
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static SECStatus
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sftkdb_encodeCipherText(PLArenaPool *arena, sftkCipherValue *cipherValue,
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SECItem **cipherText)
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{
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SFTKDBEncryptedDataInfo edi;
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SECAlgorithmID *algid;
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SECStatus rv;
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PLArenaPool *localArena = NULL;
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localArena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
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if (localArena == NULL) {
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return SECFailure;
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}
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algid = nsspkcs5_CreateAlgorithmID(localArena, cipherValue->alg,
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cipherValue->param);
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if (algid == NULL) {
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rv = SECFailure;
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goto loser;
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}
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rv = SECOID_CopyAlgorithmID(localArena, &edi.algorithm, algid);
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SECOID_DestroyAlgorithmID(algid, PR_TRUE);
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if (rv != SECSuccess) {
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goto loser;
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}
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edi.encryptedData = cipherValue->value;
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*cipherText = SEC_ASN1EncodeItem(arena, NULL, &edi,
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sftkdb_EncryptedDataInfoTemplate);
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if (*cipherText == NULL) {
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rv = SECFailure;
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}
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loser:
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if (localArena) {
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PORT_FreeArena(localArena,PR_FALSE);
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}
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return rv;
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}
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/*
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* Use our key to decode a cipherText block from the database.
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*
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* plain text is allocated by nsspkcs5_CipherData and must be freed
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* with SECITEM_FreeItem by the caller.
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*/
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SECStatus
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sftkdb_DecryptAttribute(SECItem *passKey, SECItem *cipherText, SECItem **plain)
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{
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SECStatus rv;
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sftkCipherValue cipherValue;
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/* First get the cipher type */
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rv = sftkdb_decodeCipherText(cipherText, &cipherValue);
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if (rv != SECSuccess) {
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goto loser;
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}
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*plain = nsspkcs5_CipherData(cipherValue.param, passKey, &cipherValue.value,
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PR_FALSE, NULL);
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if (*plain == NULL) {
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rv = SECFailure;
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goto loser;
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}
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loser:
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if (cipherValue.param) {
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nsspkcs5_DestroyPBEParameter(cipherValue.param);
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}
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if (cipherValue.arena) {
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PORT_FreeArena(cipherValue.arena,PR_FALSE);
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}
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return rv;
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}
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/*
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* encrypt a block. This function returned the encrypted ciphertext which
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* the caller must free. If the caller provides an arena, cipherText will
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* be allocated out of that arena. This also generated the per entry
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* salt automatically.
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*/
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SECStatus
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sftkdb_EncryptAttribute(PLArenaPool *arena, SECItem *passKey,
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SECItem *plainText, SECItem **cipherText)
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{
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SECStatus rv;
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sftkCipherValue cipherValue;
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SECItem *cipher = NULL;
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NSSPKCS5PBEParameter *param = NULL;
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unsigned char saltData[HASH_LENGTH_MAX];
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cipherValue.alg = SEC_OID_PKCS12_PBE_WITH_SHA1_AND_TRIPLE_DES_CBC;
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cipherValue.salt.len = SHA1_LENGTH;
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cipherValue.salt.data = saltData;
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RNG_GenerateGlobalRandomBytes(saltData,cipherValue.salt.len);
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param = nsspkcs5_NewParam(cipherValue.alg, &cipherValue.salt, 1);
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if (param == NULL) {
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rv = SECFailure;
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goto loser;
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}
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cipher = nsspkcs5_CipherData(param, passKey, plainText, PR_TRUE, NULL);
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if (cipher == NULL) {
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rv = SECFailure;
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goto loser;
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}
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cipherValue.value = *cipher;
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cipherValue.param = param;
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rv = sftkdb_encodeCipherText(arena, &cipherValue, cipherText);
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if (rv != SECSuccess) {
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goto loser;
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}
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loser:
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if (cipher) {
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SECITEM_FreeItem(cipher, PR_TRUE);
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}
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if (param) {
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nsspkcs5_DestroyPBEParameter(param);
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}
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return rv;
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}
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/*
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* use the password and the pbe parameters to generate an HMAC for the
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* given plain text data. This is used by sftkdb_VerifyAttribute and
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* sftkdb_SignAttribute. Signature is returned in signData. The caller
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* must preallocate the space in the secitem.
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*/
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static SECStatus
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sftkdb_pbehash(SECOidTag sigOid, SECItem *passKey,
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NSSPKCS5PBEParameter *param,
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CK_OBJECT_HANDLE objectID, CK_ATTRIBUTE_TYPE attrType,
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SECItem *plainText, SECItem *signData)
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{
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SECStatus rv = SECFailure;
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SECItem *key = NULL;
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HMACContext *hashCx = NULL;
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HASH_HashType hashType = HASH_AlgNULL;
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const SECHashObject *hashObj;
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unsigned char addressData[SDB_ULONG_SIZE];
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hashType = HASH_FromHMACOid(param->encAlg);
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if (hashType == HASH_AlgNULL) {
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PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
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return SECFailure;
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}
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|
|
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hashObj = HASH_GetRawHashObject(hashType);
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if (hashObj == NULL) {
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goto loser;
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|
}
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key = nsspkcs5_ComputeKeyAndIV(param, passKey, NULL, PR_FALSE);
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if (!key) {
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goto loser;
|
|
}
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|
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hashCx = HMAC_Create(hashObj, key->data, key->len, PR_TRUE);
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if (!hashCx) {
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goto loser;
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}
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HMAC_Begin(hashCx);
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/* Tie this value to a particular object. This is most important for
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* the trust attributes, where and attacker could copy a value for
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* 'validCA' from another cert in the database */
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sftk_ULong2SDBULong(addressData, objectID);
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HMAC_Update(hashCx, addressData, SDB_ULONG_SIZE);
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sftk_ULong2SDBULong(addressData, attrType);
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HMAC_Update(hashCx, addressData, SDB_ULONG_SIZE);
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|
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HMAC_Update(hashCx, plainText->data, plainText->len);
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rv = HMAC_Finish(hashCx, signData->data, &signData->len, signData->len);
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loser:
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if (hashCx) {
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HMAC_Destroy(hashCx, PR_TRUE);
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}
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if (key) {
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SECITEM_FreeItem(key,PR_TRUE);
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}
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return rv;
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}
|
|
|
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/*
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* Use our key to verify a signText block from the database matches
|
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* the plainText from the database. The signText is a PKCS 5 v2 pbe.
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* plainText is the plainText of the attribute.
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*/
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SECStatus
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sftkdb_VerifyAttribute(SECItem *passKey, CK_OBJECT_HANDLE objectID,
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CK_ATTRIBUTE_TYPE attrType,
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SECItem *plainText, SECItem *signText)
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|
{
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|
SECStatus rv;
|
|
sftkCipherValue signValue;
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SECItem signature;
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unsigned char signData[HASH_LENGTH_MAX];
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|
|
|
|
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/* First get the cipher type */
|
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rv = sftkdb_decodeCipherText(signText, &signValue);
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if (rv != SECSuccess) {
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goto loser;
|
|
}
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signature.data = signData;
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signature.len = sizeof(signData);
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|
|
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rv = sftkdb_pbehash(signValue.alg, passKey, signValue.param,
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objectID, attrType, plainText, &signature);
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|
if (rv != SECSuccess) {
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goto loser;
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|
}
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|
if (SECITEM_CompareItem(&signValue.value,&signature) != 0) {
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PORT_SetError(SEC_ERROR_BAD_SIGNATURE);
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rv = SECFailure;
|
|
}
|
|
|
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loser:
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|
if (signValue.param) {
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|
nsspkcs5_DestroyPBEParameter(signValue.param);
|
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}
|
|
if (signValue.arena) {
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PORT_FreeArena(signValue.arena,PR_FALSE);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* Use our key to create a signText block the plain text of an
|
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* attribute. The signText is a PKCS 5 v2 pbe.
|
|
*/
|
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SECStatus
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sftkdb_SignAttribute(PLArenaPool *arena, SECItem *passKey,
|
|
CK_OBJECT_HANDLE objectID, CK_ATTRIBUTE_TYPE attrType,
|
|
SECItem *plainText, SECItem **signature)
|
|
{
|
|
SECStatus rv;
|
|
sftkCipherValue signValue;
|
|
NSSPKCS5PBEParameter *param = NULL;
|
|
unsigned char saltData[HASH_LENGTH_MAX];
|
|
unsigned char signData[HASH_LENGTH_MAX];
|
|
SECOidTag hmacAlg = SEC_OID_HMAC_SHA256; /* hash for authentication */
|
|
SECOidTag prfAlg = SEC_OID_HMAC_SHA256; /* hash for pb key generation */
|
|
HASH_HashType prfType;
|
|
unsigned int hmacLength;
|
|
unsigned int prfLength;
|
|
|
|
/* this code allows us to fetch the lengths and hashes on the fly
|
|
* by simply changing the OID above */
|
|
prfType = HASH_FromHMACOid(prfAlg);
|
|
PORT_Assert(prfType != HASH_AlgNULL);
|
|
prfLength = HASH_GetRawHashObject(prfType)->length;
|
|
PORT_Assert(prfLength <= HASH_LENGTH_MAX);
|
|
|
|
hmacLength = HASH_GetRawHashObject(HASH_FromHMACOid(hmacAlg))->length;
|
|
PORT_Assert(hmacLength <= HASH_LENGTH_MAX);
|
|
|
|
/* initialize our CipherValue structure */
|
|
signValue.alg = SEC_OID_PKCS5_PBMAC1;
|
|
signValue.salt.len = prfLength;
|
|
signValue.salt.data = saltData;
|
|
signValue.value.data = signData;
|
|
signValue.value.len = hmacLength;
|
|
RNG_GenerateGlobalRandomBytes(saltData,prfLength);
|
|
|
|
/* initialize our pkcs5 parameter */
|
|
param = nsspkcs5_NewParam(signValue.alg, &signValue.salt, 1);
|
|
if (param == NULL) {
|
|
rv = SECFailure;
|
|
goto loser;
|
|
}
|
|
param->keyID = pbeBitGenIntegrityKey;
|
|
/* set the PKCS 5 v2 parameters, not extractable from the
|
|
* data passed into nsspkcs5_NewParam */
|
|
param->encAlg = hmacAlg;
|
|
param->hashType = prfType;
|
|
param->keyLen = hmacLength;
|
|
rv = SECOID_SetAlgorithmID(param->poolp, ¶m->prfAlg, prfAlg, NULL);
|
|
if (rv != SECSuccess) {
|
|
goto loser;
|
|
}
|
|
|
|
|
|
/* calculate the mac */
|
|
rv = sftkdb_pbehash(signValue.alg, passKey, param, objectID, attrType,
|
|
plainText, &signValue.value);
|
|
if (rv != SECSuccess) {
|
|
goto loser;
|
|
}
|
|
signValue.param = param;
|
|
|
|
/* write it out */
|
|
rv = sftkdb_encodeCipherText(arena, &signValue, signature);
|
|
if (rv != SECSuccess) {
|
|
goto loser;
|
|
}
|
|
|
|
loser:
|
|
if (param) {
|
|
nsspkcs5_DestroyPBEParameter(param);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* safely swith the passed in key for the one caches in the keydb handle
|
|
*
|
|
* A key attached to the handle tells us the the token is logged in.
|
|
* We can used the key attached to the handle in sftkdb_EncryptAttribute
|
|
* and sftkdb_DecryptAttribute calls.
|
|
*/
|
|
static void
|
|
sftkdb_switchKeys(SFTKDBHandle *keydb, SECItem *passKey)
|
|
{
|
|
unsigned char *data;
|
|
int len;
|
|
|
|
if (keydb->passwordLock == NULL) {
|
|
PORT_Assert(keydb->type != SFTK_KEYDB_TYPE);
|
|
return;
|
|
}
|
|
|
|
/* an atomic pointer set would be nice */
|
|
SKIP_AFTER_FORK(PZ_Lock(keydb->passwordLock));
|
|
data = keydb->passwordKey.data;
|
|
len = keydb->passwordKey.len;
|
|
keydb->passwordKey.data = passKey->data;
|
|
keydb->passwordKey.len = passKey->len;
|
|
passKey->data = data;
|
|
passKey->len = len;
|
|
SKIP_AFTER_FORK(PZ_Unlock(keydb->passwordLock));
|
|
}
|
|
|
|
/*
|
|
* returns true if we are in a middle of a merge style update.
|
|
*/
|
|
PRBool
|
|
sftkdb_InUpdateMerge(SFTKDBHandle *keydb)
|
|
{
|
|
return keydb->updateID ? PR_TRUE : PR_FALSE;
|
|
}
|
|
|
|
/*
|
|
* returns true if we are looking for the password for the user's old source
|
|
* database as part of a merge style update.
|
|
*/
|
|
PRBool
|
|
sftkdb_NeedUpdateDBPassword(SFTKDBHandle *keydb)
|
|
{
|
|
if (!sftkdb_InUpdateMerge(keydb)) {
|
|
return PR_FALSE;
|
|
}
|
|
if (keydb->updateDBIsInit && !keydb->updatePasswordKey) {
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/*
|
|
* fetch an update password key from a handle.
|
|
*/
|
|
SECItem *
|
|
sftkdb_GetUpdatePasswordKey(SFTKDBHandle *handle)
|
|
{
|
|
SECItem *key = NULL;
|
|
|
|
/* if we're a cert db, fetch it from our peer key db */
|
|
if (handle->type == SFTK_CERTDB_TYPE) {
|
|
handle = handle->peerDB;
|
|
}
|
|
|
|
/* don't have one */
|
|
if (!handle) {
|
|
return NULL;
|
|
}
|
|
|
|
PZ_Lock(handle->passwordLock);
|
|
if (handle->updatePasswordKey) {
|
|
key = SECITEM_DupItem(handle->updatePasswordKey);
|
|
}
|
|
PZ_Unlock(handle->passwordLock);
|
|
|
|
return key;
|
|
}
|
|
|
|
/*
|
|
* free the update password key from a handle.
|
|
*/
|
|
void
|
|
sftkdb_FreeUpdatePasswordKey(SFTKDBHandle *handle)
|
|
{
|
|
SECItem *key = NULL;
|
|
|
|
/* don't have one */
|
|
if (!handle) {
|
|
return;
|
|
}
|
|
|
|
/* if we're a cert db, we don't have one */
|
|
if (handle->type == SFTK_CERTDB_TYPE) {
|
|
return;
|
|
}
|
|
|
|
PZ_Lock(handle->passwordLock);
|
|
if (handle->updatePasswordKey) {
|
|
key = handle->updatePasswordKey;
|
|
handle->updatePasswordKey = NULL;
|
|
}
|
|
PZ_Unlock(handle->passwordLock);
|
|
|
|
if (key) {
|
|
SECITEM_ZfreeItem(key, PR_TRUE);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* what password db we use depends heavily on the update state machine
|
|
*
|
|
* 1) no update db, return the normal database.
|
|
* 2) update db and no merge return the update db.
|
|
* 3) update db and in merge:
|
|
* return the update db if we need the update db's password,
|
|
* otherwise return our normal datbase.
|
|
*/
|
|
static SDB *
|
|
sftk_getPWSDB(SFTKDBHandle *keydb)
|
|
{
|
|
if (!keydb->update) {
|
|
return keydb->db;
|
|
}
|
|
if (!sftkdb_InUpdateMerge(keydb)) {
|
|
return keydb->update;
|
|
}
|
|
if (sftkdb_NeedUpdateDBPassword(keydb)) {
|
|
return keydb->update;
|
|
}
|
|
return keydb->db;
|
|
}
|
|
|
|
/*
|
|
* return success if we have a valid password entry.
|
|
* This is will show up outside of PKCS #11 as CKF_USER_PIN_INIT
|
|
* in the token flags.
|
|
*/
|
|
SECStatus
|
|
sftkdb_HasPasswordSet(SFTKDBHandle *keydb)
|
|
{
|
|
SECItem salt, value;
|
|
unsigned char saltData[SDB_MAX_META_DATA_LEN];
|
|
unsigned char valueData[SDB_MAX_META_DATA_LEN];
|
|
CK_RV crv;
|
|
SDB *db;
|
|
|
|
if (keydb == NULL) {
|
|
return SECFailure;
|
|
}
|
|
|
|
db = sftk_getPWSDB(keydb);
|
|
if (db == NULL) {
|
|
return SECFailure;
|
|
}
|
|
|
|
salt.data = saltData;
|
|
salt.len = sizeof(saltData);
|
|
value.data = valueData;
|
|
value.len = sizeof(valueData);
|
|
crv = (*db->sdb_GetMetaData)(db, "password", &salt, &value);
|
|
|
|
/* If no password is set, we can update right away */
|
|
if (((keydb->db->sdb_flags & SDB_RDONLY) == 0) && keydb->update
|
|
&& crv != CKR_OK) {
|
|
/* update the peer certdb if it exists */
|
|
if (keydb->peerDB) {
|
|
sftkdb_Update(keydb->peerDB, NULL);
|
|
}
|
|
sftkdb_Update(keydb, NULL);
|
|
}
|
|
return (crv == CKR_OK) ? SECSuccess : SECFailure;
|
|
}
|
|
|
|
#define SFTK_PW_CHECK_STRING "password-check"
|
|
#define SFTK_PW_CHECK_LEN 14
|
|
|
|
/*
|
|
* check if the supplied password is valid
|
|
*/
|
|
SECStatus
|
|
sftkdb_CheckPassword(SFTKDBHandle *keydb, const char *pw, PRBool *tokenRemoved)
|
|
{
|
|
SECStatus rv;
|
|
SECItem salt, value;
|
|
unsigned char saltData[SDB_MAX_META_DATA_LEN];
|
|
unsigned char valueData[SDB_MAX_META_DATA_LEN];
|
|
SECItem key;
|
|
SECItem *result = NULL;
|
|
SDB *db;
|
|
CK_RV crv;
|
|
|
|
if (keydb == NULL) {
|
|
return SECFailure;
|
|
}
|
|
|
|
db = sftk_getPWSDB(keydb);
|
|
if (db == NULL) {
|
|
return SECFailure;
|
|
}
|
|
|
|
key.data = NULL;
|
|
key.len = 0;
|
|
|
|
if (pw == NULL) pw="";
|
|
|
|
/* get the entry from the database */
|
|
salt.data = saltData;
|
|
salt.len = sizeof(saltData);
|
|
value.data = valueData;
|
|
value.len = sizeof(valueData);
|
|
crv = (*db->sdb_GetMetaData)(db, "password", &salt, &value);
|
|
if (crv != CKR_OK) {
|
|
rv = SECFailure;
|
|
goto done;
|
|
}
|
|
|
|
/* get our intermediate key based on the entry salt value */
|
|
rv = sftkdb_passwordToKey(keydb, &salt, pw, &key);
|
|
if (rv != SECSuccess) {
|
|
goto done;
|
|
}
|
|
|
|
/* decrypt the entry value */
|
|
rv = sftkdb_DecryptAttribute(&key, &value, &result);
|
|
if (rv != SECSuccess) {
|
|
goto done;
|
|
}
|
|
|
|
/* if it's what we expect, update our key in the database handle and
|
|
* return Success */
|
|
if ((result->len == SFTK_PW_CHECK_LEN) &&
|
|
PORT_Memcmp(result->data, SFTK_PW_CHECK_STRING, SFTK_PW_CHECK_LEN) == 0){
|
|
/*
|
|
* We have a password, now lets handle any potential update cases..
|
|
*
|
|
* First, the normal case: no update. In this case we only need the
|
|
* the password for our only DB, which we now have, we switch
|
|
* the keys and fall through.
|
|
* Second regular (non-merge) update: The target DB does not yet have
|
|
* a password initialized, we now have the password for the source DB,
|
|
* so we can switch the keys and simply update the target database.
|
|
* Merge update case: This one is trickier.
|
|
* 1) If we need the source DB password, then we just got it here.
|
|
* We need to save that password,
|
|
* then we need to check to see if we need or have the target
|
|
* database password.
|
|
* If we have it (it's the same as the source), or don't need
|
|
* it (it's not set or is ""), we can start the update now.
|
|
* If we don't have it, we need the application to get it from
|
|
* the user. Clear our sessions out to simulate a token
|
|
* removal. C_GetTokenInfo will change the token description
|
|
* and the token will still appear to be logged out.
|
|
* 2) If we already have the source DB password, this password is
|
|
* for the target database. We can now move forward with the
|
|
* update, as we now have both required passwords.
|
|
*
|
|
*/
|
|
PZ_Lock(keydb->passwordLock);
|
|
if (sftkdb_NeedUpdateDBPassword(keydb)) {
|
|
/* Squirrel this special key away.
|
|
* This has the side effect of turning sftkdb_NeedLegacyPW off,
|
|
* as well as changing which database is returned from
|
|
* SFTK_GET_PW_DB (thus effecting both sftkdb_CheckPassword()
|
|
* and sftkdb_HasPasswordSet()) */
|
|
keydb->updatePasswordKey = SECITEM_DupItem(&key);
|
|
PZ_Unlock(keydb->passwordLock);
|
|
if (keydb->updatePasswordKey == NULL) {
|
|
/* PORT_Error set by SECITEM_DupItem */
|
|
rv = SECFailure;
|
|
goto done;
|
|
}
|
|
|
|
/* Simulate a token removal -- we need to do this any
|
|
* any case at this point so the token name is correct. */
|
|
*tokenRemoved = PR_TRUE;
|
|
|
|
/*
|
|
* OK, we got the update DB password, see if we need a password
|
|
* for the target...
|
|
*/
|
|
if (sftkdb_HasPasswordSet(keydb) == SECSuccess) {
|
|
/* We have a password, do we know what the password is?
|
|
* check 1) for the password the user supplied for the
|
|
* update DB,
|
|
* and 2) for the null password.
|
|
*
|
|
* RECURSION NOTE: we are calling ourselves here. This means
|
|
* any updates, switchKeys, etc will have been completed
|
|
* if these functions return successfully, in those cases
|
|
* just exit returning Success. We don't recurse infinitely
|
|
* because we are making this call from a NeedUpdateDBPassword
|
|
* block and we've already set that update password at this
|
|
* point. */
|
|
rv = sftkdb_CheckPassword(keydb, pw, tokenRemoved);
|
|
if (rv == SECSuccess) {
|
|
/* source and target databases have the same password, we
|
|
* are good to go */
|
|
goto done;
|
|
}
|
|
sftkdb_CheckPassword(keydb, "", tokenRemoved);
|
|
|
|
/*
|
|
* Important 'NULL' code here. At this point either we
|
|
* succeeded in logging in with "" or we didn't.
|
|
*
|
|
* If we did succeed at login, our machine state will be set
|
|
* to logged in appropriately. The application will find that
|
|
* it's logged in as soon as it opens a new session. We have
|
|
* also completed the update. Life is good.
|
|
*
|
|
* If we did not succeed, well the user still successfully
|
|
* logged into the update database, since we faked the token
|
|
* removal it's just like the user logged into his smart card
|
|
* then removed it. the actual login work, so we report that
|
|
* success back to the user, but we won't actually be
|
|
* logged in. The application will find this out when it
|
|
* checks it's login state, thus triggering another password
|
|
* prompt so we can get the real target DB password.
|
|
*
|
|
* summary, we exit from here with SECSuccess no matter what.
|
|
*/
|
|
rv = SECSuccess;
|
|
goto done;
|
|
} else {
|
|
/* there is no password, just fall through to update.
|
|
* update will write the source DB's password record
|
|
* into the target DB just like it would in a non-merge
|
|
* update case. */
|
|
}
|
|
} else {
|
|
PZ_Unlock(keydb->passwordLock);
|
|
}
|
|
/* load the keys, so the keydb can parse it's key set */
|
|
sftkdb_switchKeys(keydb, &key);
|
|
|
|
/* we need to update, do it now */
|
|
if (((keydb->db->sdb_flags & SDB_RDONLY) == 0) && keydb->update) {
|
|
/* update the peer certdb if it exists */
|
|
if (keydb->peerDB) {
|
|
sftkdb_Update(keydb->peerDB, &key);
|
|
}
|
|
sftkdb_Update(keydb, &key);
|
|
}
|
|
} else {
|
|
rv = SECFailure;
|
|
/*PORT_SetError( bad password); */
|
|
}
|
|
|
|
done:
|
|
if (key.data) {
|
|
PORT_ZFree(key.data,key.len);
|
|
}
|
|
if (result) {
|
|
SECITEM_FreeItem(result,PR_TRUE);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* return Success if the there is a cached password key.
|
|
*/
|
|
SECStatus
|
|
sftkdb_PWCached(SFTKDBHandle *keydb)
|
|
{
|
|
return keydb->passwordKey.data ? SECSuccess : SECFailure;
|
|
}
|
|
|
|
|
|
static CK_RV
|
|
sftk_updateMacs(PLArenaPool *arena, SFTKDBHandle *handle,
|
|
CK_OBJECT_HANDLE id, SECItem *newKey)
|
|
{
|
|
CK_ATTRIBUTE authAttrs[] = {
|
|
{CKA_MODULUS, NULL, 0},
|
|
{CKA_PUBLIC_EXPONENT, NULL, 0},
|
|
{CKA_CERT_SHA1_HASH, NULL, 0},
|
|
{CKA_CERT_MD5_HASH, NULL, 0},
|
|
{CKA_TRUST_SERVER_AUTH, NULL, 0},
|
|
{CKA_TRUST_CLIENT_AUTH, NULL, 0},
|
|
{CKA_TRUST_EMAIL_PROTECTION, NULL, 0},
|
|
{CKA_TRUST_CODE_SIGNING, NULL, 0},
|
|
{CKA_TRUST_STEP_UP_APPROVED, NULL, 0},
|
|
{CKA_NSS_OVERRIDE_EXTENSIONS, NULL, 0},
|
|
};
|
|
CK_ULONG authAttrCount = sizeof(authAttrs)/sizeof(CK_ATTRIBUTE);
|
|
unsigned int i, count;
|
|
SFTKDBHandle *keyHandle = handle;
|
|
SDB *keyTarget = NULL;
|
|
|
|
id &= SFTK_OBJ_ID_MASK;
|
|
|
|
if (handle->type != SFTK_KEYDB_TYPE) {
|
|
keyHandle = handle->peerDB;
|
|
}
|
|
|
|
if (keyHandle == NULL) {
|
|
return CKR_OK;
|
|
}
|
|
|
|
/* old DB's don't have meta data, finished with MACs */
|
|
keyTarget = SFTK_GET_SDB(keyHandle);
|
|
if ((keyTarget->sdb_flags &SDB_HAS_META) == 0) {
|
|
return CKR_OK;
|
|
}
|
|
|
|
/*
|
|
* STEP 1: find the MACed attributes of this object
|
|
*/
|
|
(void)sftkdb_GetAttributeValue(handle, id, authAttrs, authAttrCount);
|
|
count = 0;
|
|
/* allocate space for the attributes */
|
|
for (i=0; i < authAttrCount; i++) {
|
|
if ((authAttrs[i].ulValueLen == -1) || (authAttrs[i].ulValueLen == 0)){
|
|
continue;
|
|
}
|
|
count++;
|
|
authAttrs[i].pValue = PORT_ArenaAlloc(arena,authAttrs[i].ulValueLen);
|
|
if (authAttrs[i].pValue == NULL) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* if count was zero, none were found, finished with MACs */
|
|
if (count == 0) {
|
|
return CKR_OK;
|
|
}
|
|
|
|
(void)sftkdb_GetAttributeValue(handle, id, authAttrs, authAttrCount);
|
|
/* ignore error code, we expect some possible errors */
|
|
|
|
/* GetAttributeValue just verified the old macs, safe to write
|
|
* them out then... */
|
|
for (i=0; i < authAttrCount; i++) {
|
|
SECItem *signText;
|
|
SECItem plainText;
|
|
SECStatus rv;
|
|
|
|
if ((authAttrs[i].ulValueLen == -1) || (authAttrs[i].ulValueLen == 0)){
|
|
continue;
|
|
}
|
|
|
|
plainText.data = authAttrs[i].pValue;
|
|
plainText.len = authAttrs[i].ulValueLen;
|
|
rv = sftkdb_SignAttribute(arena, newKey, id,
|
|
authAttrs[i].type, &plainText, &signText);
|
|
if (rv != SECSuccess) {
|
|
return CKR_GENERAL_ERROR;
|
|
}
|
|
rv = sftkdb_PutAttributeSignature(handle, keyTarget, id,
|
|
authAttrs[i].type, signText);
|
|
if (rv != SECSuccess) {
|
|
return CKR_GENERAL_ERROR;
|
|
}
|
|
}
|
|
|
|
return CKR_OK;
|
|
}
|
|
|
|
static CK_RV
|
|
sftk_updateEncrypted(PLArenaPool *arena, SFTKDBHandle *keydb,
|
|
CK_OBJECT_HANDLE id, SECItem *newKey)
|
|
{
|
|
CK_RV crv = CKR_OK;
|
|
CK_RV crv2;
|
|
CK_ATTRIBUTE *first, *last;
|
|
CK_ATTRIBUTE privAttrs[] = {
|
|
{CKA_VALUE, NULL, 0},
|
|
{CKA_PRIVATE_EXPONENT, NULL, 0},
|
|
{CKA_PRIME_1, NULL, 0},
|
|
{CKA_PRIME_2, NULL, 0},
|
|
{CKA_EXPONENT_1, NULL, 0},
|
|
{CKA_EXPONENT_2, NULL, 0},
|
|
{CKA_COEFFICIENT, NULL, 0} };
|
|
CK_ULONG privAttrCount = sizeof(privAttrs)/sizeof(CK_ATTRIBUTE);
|
|
unsigned int i, count;
|
|
|
|
/*
|
|
* STEP 1. Read the old attributes in the clear.
|
|
*/
|
|
|
|
/* Get the attribute sizes.
|
|
* ignore the error code, we will have unknown attributes here */
|
|
crv2 = sftkdb_GetAttributeValue(keydb, id, privAttrs, privAttrCount);
|
|
|
|
/*
|
|
* find the valid block of attributes and fill allocate space for
|
|
* their data */
|
|
first = last = NULL;
|
|
for (i=0; i < privAttrCount; i++) {
|
|
/* find the block of attributes that are appropriate for this
|
|
* objects. There should only be once contiguous block, if not
|
|
* there's an error.
|
|
*
|
|
* find the first and last good entry.
|
|
*/
|
|
if ((privAttrs[i].ulValueLen == -1) || (privAttrs[i].ulValueLen == 0)){
|
|
if (!first) continue;
|
|
if (!last) {
|
|
/* previous entry was last good entry */
|
|
last= &privAttrs[i-1];
|
|
}
|
|
continue;
|
|
}
|
|
if (!first) {
|
|
first = &privAttrs[i];
|
|
}
|
|
if (last) {
|
|
/* OOPS, we've found another good entry beyond the end of the
|
|
* last good entry, we need to fail here. */
|
|
crv = CKR_GENERAL_ERROR;
|
|
break;
|
|
}
|
|
privAttrs[i].pValue = PORT_ArenaAlloc(arena,privAttrs[i].ulValueLen);
|
|
if (privAttrs[i].pValue == NULL) {
|
|
crv = CKR_HOST_MEMORY;
|
|
break;
|
|
}
|
|
}
|
|
if (first == NULL) {
|
|
/* no valid entries found, return error based on crv2 */
|
|
return crv2;
|
|
}
|
|
if (last == NULL) {
|
|
last = &privAttrs[privAttrCount-1];
|
|
}
|
|
if (crv != CKR_OK) {
|
|
return crv;
|
|
}
|
|
/* read the attributes */
|
|
count = (last-first)+1;
|
|
crv = sftkdb_GetAttributeValue(keydb, id, first, count);
|
|
if (crv != CKR_OK) {
|
|
return crv;
|
|
}
|
|
|
|
/*
|
|
* STEP 2: read the encrypt the attributes with the new key.
|
|
*/
|
|
for (i=0; i < count; i++) {
|
|
SECItem plainText;
|
|
SECItem *result;
|
|
SECStatus rv;
|
|
|
|
plainText.data = first[i].pValue;
|
|
plainText.len = first[i].ulValueLen;
|
|
rv = sftkdb_EncryptAttribute(arena, newKey, &plainText, &result);
|
|
if (rv != SECSuccess) {
|
|
return CKR_GENERAL_ERROR;
|
|
}
|
|
first[i].pValue = result->data;
|
|
first[i].ulValueLen = result->len;
|
|
/* clear our sensitive data out */
|
|
PORT_Memset(plainText.data, 0, plainText.len);
|
|
}
|
|
|
|
|
|
/*
|
|
* STEP 3: write the newly encrypted attributes out directly
|
|
*/
|
|
id &= SFTK_OBJ_ID_MASK;
|
|
keydb->newKey = newKey;
|
|
crv = (*keydb->db->sdb_SetAttributeValue)(keydb->db, id, first, count);
|
|
keydb->newKey = NULL;
|
|
|
|
return crv;
|
|
}
|
|
|
|
static CK_RV
|
|
sftk_convertAttributes(SFTKDBHandle *handle,
|
|
CK_OBJECT_HANDLE id, SECItem *newKey)
|
|
{
|
|
CK_RV crv = CKR_OK;
|
|
PLArenaPool *arena = NULL;
|
|
|
|
/* get a new arena to simplify cleanup */
|
|
arena = PORT_NewArena(1024);
|
|
if (!arena) {
|
|
return CKR_HOST_MEMORY;
|
|
}
|
|
|
|
/*
|
|
* first handle the MACS
|
|
*/
|
|
crv = sftk_updateMacs(arena, handle, id, newKey);
|
|
if (crv != CKR_OK) {
|
|
goto loser;
|
|
}
|
|
|
|
if (handle->type == SFTK_KEYDB_TYPE) {
|
|
crv = sftk_updateEncrypted(arena, handle, id, newKey);
|
|
if (crv != CKR_OK) {
|
|
goto loser;
|
|
}
|
|
}
|
|
|
|
/* free up our mess */
|
|
/* NOTE: at this point we know we've cleared out any unencrypted data */
|
|
PORT_FreeArena(arena, PR_FALSE);
|
|
return CKR_OK;
|
|
|
|
loser:
|
|
/* there may be unencrypted data, clear it out down */
|
|
PORT_FreeArena(arena, PR_TRUE);
|
|
return crv;
|
|
}
|
|
|
|
|
|
/*
|
|
* must be called with the old key active.
|
|
*/
|
|
CK_RV
|
|
sftkdb_convertObjects(SFTKDBHandle *handle, CK_ATTRIBUTE *template,
|
|
CK_ULONG count, SECItem *newKey)
|
|
{
|
|
SDBFind *find = NULL;
|
|
CK_ULONG idCount = SFTK_MAX_IDS;
|
|
CK_OBJECT_HANDLE ids[SFTK_MAX_IDS];
|
|
CK_RV crv, crv2;
|
|
unsigned int i;
|
|
|
|
crv = sftkdb_FindObjectsInit(handle, template, count, &find);
|
|
|
|
if (crv != CKR_OK) {
|
|
return crv;
|
|
}
|
|
while ((crv == CKR_OK) && (idCount == SFTK_MAX_IDS)) {
|
|
crv = sftkdb_FindObjects(handle, find, ids, SFTK_MAX_IDS, &idCount);
|
|
for (i=0; (crv == CKR_OK) && (i < idCount); i++) {
|
|
crv = sftk_convertAttributes(handle, ids[i], newKey);
|
|
}
|
|
}
|
|
crv2 = sftkdb_FindObjectsFinal(handle, find);
|
|
if (crv == CKR_OK) crv = crv2;
|
|
|
|
return crv;
|
|
}
|
|
|
|
|
|
/*
|
|
* change the database password.
|
|
*/
|
|
SECStatus
|
|
sftkdb_ChangePassword(SFTKDBHandle *keydb,
|
|
char *oldPin, char *newPin, PRBool *tokenRemoved)
|
|
{
|
|
SECStatus rv = SECSuccess;
|
|
SECItem plainText;
|
|
SECItem newKey;
|
|
SECItem *result = NULL;
|
|
SECItem salt, value;
|
|
SFTKDBHandle *certdb;
|
|
unsigned char saltData[SDB_MAX_META_DATA_LEN];
|
|
unsigned char valueData[SDB_MAX_META_DATA_LEN];
|
|
CK_RV crv;
|
|
SDB *db;
|
|
|
|
if (keydb == NULL) {
|
|
return SECFailure;
|
|
}
|
|
|
|
db = SFTK_GET_SDB(keydb);
|
|
if (db == NULL) {
|
|
return SECFailure;
|
|
}
|
|
|
|
newKey.data = NULL;
|
|
|
|
/* make sure we have a valid old pin */
|
|
crv = (*keydb->db->sdb_Begin)(keydb->db);
|
|
if (crv != CKR_OK) {
|
|
rv = SECFailure;
|
|
goto loser;
|
|
}
|
|
salt.data = saltData;
|
|
salt.len = sizeof(saltData);
|
|
value.data = valueData;
|
|
value.len = sizeof(valueData);
|
|
crv = (*db->sdb_GetMetaData)(db, "password", &salt, &value);
|
|
if (crv == CKR_OK) {
|
|
rv = sftkdb_CheckPassword(keydb, oldPin, tokenRemoved);
|
|
if (rv == SECFailure) {
|
|
goto loser;
|
|
}
|
|
} else {
|
|
salt.len = SHA1_LENGTH;
|
|
RNG_GenerateGlobalRandomBytes(salt.data,salt.len);
|
|
}
|
|
|
|
rv = sftkdb_passwordToKey(keydb, &salt, newPin, &newKey);
|
|
if (rv != SECSuccess) {
|
|
goto loser;
|
|
}
|
|
|
|
|
|
/*
|
|
* convert encrypted entries here.
|
|
*/
|
|
crv = sftkdb_convertObjects(keydb, NULL, 0, &newKey);
|
|
if (crv != CKR_OK) {
|
|
rv = SECFailure;
|
|
goto loser;
|
|
}
|
|
/* fix up certdb macs */
|
|
certdb = keydb->peerDB;
|
|
if (certdb) {
|
|
CK_ATTRIBUTE objectType = { CKA_CLASS, 0, sizeof(CK_OBJECT_CLASS) };
|
|
CK_OBJECT_CLASS myClass = CKO_NETSCAPE_TRUST;
|
|
|
|
objectType.pValue = &myClass;
|
|
crv = sftkdb_convertObjects(certdb, &objectType, 1, &newKey);
|
|
if (crv != CKR_OK) {
|
|
rv = SECFailure;
|
|
goto loser;
|
|
}
|
|
myClass = CKO_PUBLIC_KEY;
|
|
crv = sftkdb_convertObjects(certdb, &objectType, 1, &newKey);
|
|
if (crv != CKR_OK) {
|
|
rv = SECFailure;
|
|
goto loser;
|
|
}
|
|
}
|
|
|
|
|
|
plainText.data = (unsigned char *)SFTK_PW_CHECK_STRING;
|
|
plainText.len = SFTK_PW_CHECK_LEN;
|
|
|
|
rv = sftkdb_EncryptAttribute(NULL, &newKey, &plainText, &result);
|
|
if (rv != SECSuccess) {
|
|
goto loser;
|
|
}
|
|
value.data = result->data;
|
|
value.len = result->len;
|
|
crv = (*keydb->db->sdb_PutMetaData)(keydb->db, "password", &salt, &value);
|
|
if (crv != CKR_OK) {
|
|
rv = SECFailure;
|
|
goto loser;
|
|
}
|
|
crv = (*keydb->db->sdb_Commit)(keydb->db);
|
|
if (crv != CKR_OK) {
|
|
rv = SECFailure;
|
|
goto loser;
|
|
}
|
|
|
|
keydb->newKey = NULL;
|
|
|
|
sftkdb_switchKeys(keydb, &newKey);
|
|
|
|
loser:
|
|
if (newKey.data) {
|
|
PORT_ZFree(newKey.data,newKey.len);
|
|
}
|
|
if (result) {
|
|
SECITEM_FreeItem(result, PR_TRUE);
|
|
}
|
|
if (rv != SECSuccess) {
|
|
(*keydb->db->sdb_Abort)(keydb->db);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* lose our cached password
|
|
*/
|
|
SECStatus
|
|
sftkdb_ClearPassword(SFTKDBHandle *keydb)
|
|
{
|
|
SECItem oldKey;
|
|
oldKey.data = NULL;
|
|
oldKey.len = 0;
|
|
sftkdb_switchKeys(keydb, &oldKey);
|
|
if (oldKey.data) {
|
|
PORT_ZFree(oldKey.data, oldKey.len);
|
|
}
|
|
return SECSuccess;
|
|
}
|
|
|
|
|