1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/crypto/nss/des/string2key.c */
/*
* Copyright (C) 2009 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include "crypto_int.h"
#include "pk11pub.h"
#include "nss_gen.h"
krb5_error_code
mit_des_string_to_key_int(krb5_keyblock *key, const krb5_data *pw,
const krb5_data *salt)
{
PK11SlotInfo *slot = NULL;
PK11SymKey *symKey = NULL;
SECItem pwItem;
SECItem paramsItem;
CK_PBE_PARAMS pbe_params;
CK_MECHANISM_TYPE pbeMech = CKM_NETSCAPE_PBE_SHA1_DES_CBC;
krb5_error_code ret;
SECItem *keyData;
ret = k5_nss_init();
if (ret)
return ret;
slot = PK11_GetBestSlot(pbeMech, NULL);
if (slot == NULL) {
ret = k5_nss_map_last_error();
goto loser;
}
pwItem.data = (unsigned char *)pw->data;
pwItem.len = pw->length;
memset(&pbe_params, 0, sizeof(pbe_params));
pbe_params.pSalt = (unsigned char *)salt->data;
pbe_params.ulSaltLen = salt->length;
pbe_params.ulIteration = 1;
paramsItem.data = (unsigned char *)&pbe_params;
paramsItem.len = sizeof(pbe_params);
symKey = PK11_RawPBEKeyGen(slot, pbeMech, ¶msItem, &pwItem,
PR_FALSE, NULL);
if (symKey == NULL) {
ret = k5_nss_map_last_error();
goto loser;
}
PK11_ExtractKeyValue(symKey);
keyData = PK11_GetKeyData(symKey);
if (!keyData) {
ret = k5_nss_map_last_error();
goto loser;
}
key->length = keyData->len;
memcpy(key->contents, keyData->data, key->length);
ret = 0;
loser:
if (symKey)
PK11_FreeSymKey(symKey);
if (slot)
PK11_FreeSlot(slot);
return ret;
}
|
