Permalink
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
January 20, 2019 23:10
February 12, 2010 09:21
April 26, 2019 18:22
February 12, 2010 09:21
April 16, 2010 15:54
September 5, 2019 10:05
January 22, 2019 12:00
January 22, 2019 12:00
March 13, 2020 04:16
September 5, 2019 10:05
January 22, 2019 12:00
October 18, 2020 11:32
February 12, 2010 09:21
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
January 20, 2019 22:51
April 16, 2010 15:54
January 20, 2019 22:51
February 12, 2010 09:21
January 22, 2019 12:00
January 22, 2019 12:00
January 20, 2019 22:51
January 20, 2019 22:51
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
January 20, 2019 23:08
January 20, 2019 23:10
January 20, 2019 23:08
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2016 00:20
February 12, 2010 09:21
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 23:00
January 21, 2019 00:47
January 20, 2019 23:00
January 21, 2019 00:47
January 20, 2019 22:51
January 20, 2019 23:05
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
January 22, 2019 12:03
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
October 1, 2019 10:22
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
January 15, 2015 09:40
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 23:01
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 25, 2020 00:03
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 25, 2020 00:03
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 25, 2020 00:03
September 13, 2018 02:08
November 22, 2020 22:38
January 20, 2019 22:51
February 12, 2010 09:21
January 20, 2019 22:51
January 20, 2019 22:51
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
January 25, 2020 00:03
January 20, 2019 22:51
January 25, 2020 00:03
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 25, 2020 00:03
February 12, 2010 09:21
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
February 12, 2010 09:21
January 20, 2019 22:51
January 25, 2020 00:03
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 25, 2020 00:03
February 12, 2010 09:21
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
October 28, 2016 03:33
February 12, 2010 09:21
October 28, 2016 03:33
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
October 28, 2016 03:33
February 12, 2010 09:21
February 12, 2010 09:21
October 18, 2020 11:32
February 12, 2010 09:21
October 28, 2016 03:33
February 12, 2010 09:21
January 20, 2019 22:51
September 5, 2019 10:05
January 25, 2020 00:03
September 5, 2019 10:05
January 25, 2020 00:03
February 12, 2010 09:21
January 20, 2019 22:51
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
February 12, 2010 09:21
January 20, 2019 22:51
January 25, 2020 00:03
January 25, 2020 00:03
January 20, 2019 22:51
January 20, 2019 22:51
January 25, 2020 00:03
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
January 20, 2019 22:51
July 23, 2019 22:25
January 20, 2019 22:51
May 29, 2020 03:14
Newer
100644
1886 lines (1652 sloc)
47 KB
2
/*
3
* Copyright (c) 2010 Markus Friedl. All rights reserved.
5
*
6
* Permission to use, copy, modify, and distribute this software for any
7
* purpose with or without fee is hereby granted, provided that the above
8
* copyright notice and this permission notice appear in all copies.
9
*
10
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
*/
18
28
#include <stdarg.h>
29
#include <stdio.h>
30
32
#include <string.h>
33
#include <dlfcn.h>
34
42
#define CRYPTOKI_COMPAT
43
#include "pkcs11.h"
44
45
#include "log.h"
46
#include "misc.h"
48
#include "ssh-pkcs11.h"
50
#include "xmalloc.h"
51
52
struct pkcs11_slotinfo {
53
CK_TOKEN_INFO token;
54
CK_SESSION_HANDLE session;
55
int logged_in;
56
};
57
58
struct pkcs11_provider {
59
char *name;
60
void *handle;
61
CK_FUNCTION_LIST *function_list;
62
CK_INFO info;
63
CK_ULONG nslots;
64
CK_SLOT_ID *slotlist;
65
struct pkcs11_slotinfo *slotinfo;
66
int valid;
67
int refcount;
68
TAILQ_ENTRY(pkcs11_provider) next;
69
};
70
71
TAILQ_HEAD(, pkcs11_provider) pkcs11_providers;
72
73
struct pkcs11_key {
74
struct pkcs11_provider *provider;
75
CK_ULONG slotidx;
76
char *keyid;
77
int keyid_len;
78
};
79
80
int pkcs11_interactive = 0;
81
94
int
95
pkcs11_init(int interactive)
96
{
97
pkcs11_interactive = interactive;
98
TAILQ_INIT(&pkcs11_providers);
99
return (0);
100
}
101
102
/*
104
* however, there might still be keys referencing this provider,
106
* this is called when a provider gets unregistered.
107
*/
108
static void
109
pkcs11_provider_finalize(struct pkcs11_provider *p)
110
{
111
CK_RV rv;
112
CK_ULONG i;
113
114
debug("pkcs11_provider_finalize: %p refcount %d valid %d",
115
p, p->refcount, p->valid);
116
if (!p->valid)
117
return;
118
for (i = 0; i < p->nslots; i++) {
119
if (p->slotinfo[i].session &&
120
(rv = p->function_list->C_CloseSession(
121
p->slotinfo[i].session)) != CKR_OK)
122
error("C_CloseSession failed: %lu", rv);
123
}
124
if ((rv = p->function_list->C_Finalize(NULL)) != CKR_OK)
125
error("C_Finalize failed: %lu", rv);
126
p->valid = 0;
127
p->function_list = NULL;
128
dlclose(p->handle);
129
}
130
131
/*
132
* remove a reference to the provider.
133
* called when a key gets destroyed or when the provider is unregistered.
134
*/
135
static void
136
pkcs11_provider_unref(struct pkcs11_provider *p)
137
{
138
debug("pkcs11_provider_unref: %p refcount %d", p, p->refcount);
139
if (--p->refcount <= 0) {
140
if (p->valid)
141
error("pkcs11_provider_unref: %p still valid", p);
146
}
147
}
148
149
/* unregister all providers, keys might still point to the providers */
150
void
151
pkcs11_terminate(void)
152
{
153
struct pkcs11_provider *p;
154
155
while ((p = TAILQ_FIRST(&pkcs11_providers)) != NULL) {
156
TAILQ_REMOVE(&pkcs11_providers, p, next);
157
pkcs11_provider_finalize(p);
158
pkcs11_provider_unref(p);
159
}
160
}
161
162
/* lookup provider by name */
163
static struct pkcs11_provider *
164
pkcs11_provider_lookup(char *provider_id)
165
{
166
struct pkcs11_provider *p;
167
168
TAILQ_FOREACH(p, &pkcs11_providers, next) {
169
debug("check %p %s", p, p->name);
170
if (!strcmp(provider_id, p->name))
171
return (p);
172
}
173
return (NULL);
174
}
175
176
/* unregister provider by name */
177
int
178
pkcs11_del_provider(char *provider_id)
179
{
180
struct pkcs11_provider *p;
181
182
if ((p = pkcs11_provider_lookup(provider_id)) != NULL) {
183
TAILQ_REMOVE(&pkcs11_providers, p, next);
184
pkcs11_provider_finalize(p);
185
pkcs11_provider_unref(p);
186
return (0);
187
}
188
return (-1);
189
}
190
198
/* release a wrapped object */
199
static void
200
pkcs11_k11_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad, int idx,
201
long argl, void *argp)
202
{
206
if (k11 == NULL)
207
return;
208
if (k11->provider)
209
pkcs11_provider_unref(k11->provider);
210
free(k11->keyid);
211
free(k11);
212
}
213
214
/* find a single 'obj' for given attributes */
215
static int
216
pkcs11_find(struct pkcs11_provider *p, CK_ULONG slotidx, CK_ATTRIBUTE *attr,
217
CK_ULONG nattr, CK_OBJECT_HANDLE *obj)
218
{
219
CK_FUNCTION_LIST *f;
220
CK_SESSION_HANDLE session;
221
CK_ULONG nfound = 0;
222
CK_RV rv;
223
int ret = -1;
224
225
f = p->function_list;
226
session = p->slotinfo[slotidx].session;
227
if ((rv = f->C_FindObjectsInit(session, attr, nattr)) != CKR_OK) {
228
error("C_FindObjectsInit failed (nattr %lu): %lu", nattr, rv);
229
return (-1);
230
}
231
if ((rv = f->C_FindObjects(session, obj, 1, &nfound)) != CKR_OK ||
232
nfound != 1) {
233
debug("C_FindObjects failed (nfound %lu nattr %lu): %lu",
234
nfound, nattr, rv);
235
} else
236
ret = 0;
237
if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK)
238
error("C_FindObjectsFinal failed: %lu", rv);
239
return (ret);
240
}
241
243
pkcs11_login_slot(struct pkcs11_provider *provider, struct pkcs11_slotinfo *si,
244
CK_USER_TYPE type)
250
error("no pkcs11 (valid) provider found");
251
return (-1);
252
}
253
254
if (!pkcs11_interactive) {
255
error("need pin entry%s",
256
(si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH) ?
257
" on reader keypad" : "");
258
return (-1);
259
}
260
if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH)
261
verbose("Deferring PIN entry to reader keypad.");
262
else {
263
snprintf(prompt, sizeof(prompt), "Enter PIN for '%s': ",
264
si->token.label);
265
if ((pin = read_passphrase(prompt, RP_ALLOW_EOF)) == NULL) {
271
(pin != NULL) ? strlen(pin) : 0);
272
if (pin != NULL)
273
freezero(pin, strlen(pin));
274
275
switch (rv) {
276
case CKR_OK:
277
case CKR_USER_ALREADY_LOGGED_IN:
278
/* success */
279
break;
280
case CKR_PIN_LEN_RANGE:
281
error("PKCS#11 login failed: PIN length out of range");
282
return -1;
283
case CKR_PIN_INCORRECT:
284
error("PKCS#11 login failed: PIN incorrect");
285
return -1;
286
case CKR_PIN_LOCKED:
287
error("PKCS#11 login failed: PIN locked");
288
return -1;
289
default:
290
error("PKCS#11 login failed: error %lu", rv);
291
return -1;
297
static int
298
pkcs11_login(struct pkcs11_key *k11, CK_USER_TYPE type)
299
{
300
if (k11 == NULL || k11->provider == NULL || !k11->provider->valid) {
301
error("no pkcs11 (valid) provider found");
302
return (-1);
303
}
304
305
return pkcs11_login_slot(k11->provider,
306
&k11->provider->slotinfo[k11->slotidx], type);
307
}
308
309
310
static int
311
pkcs11_check_obj_bool_attrib(struct pkcs11_key *k11, CK_OBJECT_HANDLE obj,
312
CK_ATTRIBUTE_TYPE type, int *val)
313
{
314
struct pkcs11_slotinfo *si;
315
CK_FUNCTION_LIST *f;
316
CK_BBOOL flag = 0;
317
CK_ATTRIBUTE attr;
318
CK_RV rv;
319
320
*val = 0;
321
322
if (!k11->provider || !k11->provider->valid) {
323
error("no pkcs11 (valid) provider found");
324
return (-1);
325
}
326
327
f = k11->provider->function_list;
328
si = &k11->provider->slotinfo[k11->slotidx];
329
330
attr.type = type;
331
attr.pValue = &flag;
332
attr.ulValueLen = sizeof(flag);
333
334
rv = f->C_GetAttributeValue(si->session, obj, &attr, 1);
335
if (rv != CKR_OK) {
336
error("C_GetAttributeValue failed: %lu", rv);
337
return (-1);
338
}
339
*val = flag != 0;
340
debug_f("provider %p slot %lu object %lu: attrib %lu = %d",
341
k11->provider, k11->slotidx, obj, type, *val);
345
static int
347
{
348
struct pkcs11_slotinfo *si;
349
CK_FUNCTION_LIST *f;
350
CK_OBJECT_HANDLE obj;
351
CK_RV rv;
352
CK_OBJECT_CLASS private_key_class;
353
CK_BBOOL true_val;
354
CK_MECHANISM mech;
355
CK_ATTRIBUTE key_filter[3];
359
if (!k11->provider || !k11->provider->valid) {
361
return (-1);
362
}
364
f = k11->provider->function_list;
365
si = &k11->provider->slotinfo[k11->slotidx];
367
if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) {
370
return (-1);
371
}
373
}
374
375
memset(&key_filter, 0, sizeof(key_filter));
376
private_key_class = CKO_PRIVATE_KEY;
377
key_filter[0].type = CKA_CLASS;
378
key_filter[0].pValue = &private_key_class;
379
key_filter[0].ulValueLen = sizeof(private_key_class);
380
381
key_filter[1].type = CKA_ID;
382
key_filter[1].pValue = k11->keyid;
383
key_filter[1].ulValueLen = k11->keyid_len;
384
385
true_val = CK_TRUE;
386
key_filter[2].type = CKA_SIGN;
387
key_filter[2].pValue = &true_val;
388
key_filter[2].ulValueLen = sizeof(true_val);
389
390
/* try to find object w/CKA_SIGN first, retry w/o */
391
if (pkcs11_find(k11->provider, k11->slotidx, key_filter, 3, &obj) < 0 &&
392
pkcs11_find(k11->provider, k11->slotidx, key_filter, 2, &obj) < 0) {
393
error("cannot find private key");
394
return (-1);
395
}
396
397
memset(&mech, 0, sizeof(mech));
398
mech.mechanism = mech_type;
399
mech.pParameter = NULL_PTR;
400
mech.ulParameterLen = 0;
401
402
if ((rv = f->C_SignInit(si->session, &mech, obj)) != CKR_OK) {
403
error("C_SignInit failed: %lu", rv);
407
pkcs11_check_obj_bool_attrib(k11, obj, CKA_ALWAYS_AUTHENTICATE,
408
&always_auth); /* ignore errors here */
409
if (always_auth && !did_login) {
411
if (pkcs11_login(k11, CKU_CONTEXT_SPECIFIC) < 0) {
412
error("login failed for always-auth key");
413
return (-1);
414
}
415
}
416
417
return (0);
418
}
419
420
/* openssl callback doing the actual signing operation */
421
static int
422
pkcs11_rsa_private_encrypt(int flen, const u_char *from, u_char *to, RSA *rsa,
423
int padding)
424
{
425
struct pkcs11_key *k11;
426
struct pkcs11_slotinfo *si;
427
CK_FUNCTION_LIST *f;
428
CK_ULONG tlen = 0;
429
CK_RV rv;
430
int rval = -1;
431
434
return (-1);
435
}
436
437
if (pkcs11_get_key(k11, CKM_RSA_PKCS) == -1) {
438
error("pkcs11_get_key failed");
439
return (-1);
440
}
441
442
f = k11->provider->function_list;
443
si = &k11->provider->slotinfo[k11->slotidx];
444
tlen = RSA_size(rsa);
445
446
/* XXX handle CKR_BUFFER_TOO_SMALL */
447
rv = f->C_Sign(si->session, (CK_BYTE *)from, flen, to, &tlen);
448
if (rv == CKR_OK)
449
rval = tlen;
450
else
451
error("C_Sign failed: %lu", rv);
452
453
return (rval);
454
}
455
456
static int
457
pkcs11_rsa_private_decrypt(int flen, const u_char *from, u_char *to, RSA *rsa,
458
int padding)
459
{
460
return (-1);
461
}
462
463
static int
464
pkcs11_rsa_start_wrapper(void)
465
{
466
if (rsa_method != NULL)
467
return (0);
468
rsa_method = RSA_meth_dup(RSA_get_default_method());
469
if (rsa_method == NULL)
470
return (-1);
471
rsa_idx = RSA_get_ex_new_index(0, "ssh-pkcs11-rsa",
472
NULL, NULL, pkcs11_k11_free);
473
if (rsa_idx == -1)
474
return (-1);
475
if (!RSA_meth_set1_name(rsa_method, "pkcs11") ||
476
!RSA_meth_set_priv_enc(rsa_method, pkcs11_rsa_private_encrypt) ||
484
/* redirect private key operations for rsa key to pkcs11 token */
485
static int
486
pkcs11_rsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
487
CK_ATTRIBUTE *keyid_attrib, RSA *rsa)
488
{
489
struct pkcs11_key *k11;
493
494
k11 = xcalloc(1, sizeof(*k11));
495
k11->provider = provider;
496
provider->refcount++; /* provider referenced by RSA key */
497
k11->slotidx = slotidx;
498
/* identify key object on smartcard */
499
k11->keyid_len = keyid_attrib->ulValueLen;
500
if (k11->keyid_len > 0) {
501
k11->keyid = xmalloc(k11->keyid_len);
502
memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
503
}
507
return (0);
508
}
509
511
/* openssl callback doing the actual signing operation */
512
static ECDSA_SIG *
513
ecdsa_do_sign(const unsigned char *dgst, int dgst_len, const BIGNUM *inv,
514
const BIGNUM *rp, EC_KEY *ec)
515
{
516
struct pkcs11_key *k11;
517
struct pkcs11_slotinfo *si;
518
CK_FUNCTION_LIST *f;
519
CK_ULONG siglen = 0, bnlen;
520
CK_RV rv;
521
ECDSA_SIG *ret = NULL;
522
u_char *sig;
526
ossl_error("EC_KEY_get_key_method_data failed for ec");
527
return (NULL);
528
}
529
530
if (pkcs11_get_key(k11, CKM_ECDSA) == -1) {
531
error("pkcs11_get_key failed");
532
return (NULL);
533
}
534
535
f = k11->provider->function_list;
536
si = &k11->provider->slotinfo[k11->slotidx];
537
538
siglen = ECDSA_size(ec);
539
sig = xmalloc(siglen);
540
541
/* XXX handle CKR_BUFFER_TOO_SMALL */
542
rv = f->C_Sign(si->session, (CK_BYTE *)dgst, dgst_len, sig, &siglen);
543
if (rv != CKR_OK) {
544
error("C_Sign failed: %lu", rv);
545
goto done;
546
}
547
if (siglen < 64 || siglen > 132 || siglen % 2) {
548
ossl_error("d2i_ECDSA_SIG failed");
549
goto done;
550
}
551
bnlen = siglen/2;
552
if ((ret = ECDSA_SIG_new()) == NULL) {
553
error("ECDSA_SIG_new failed");
554
goto done;
555
}
556
if ((r = BN_bin2bn(sig, bnlen, NULL)) == NULL ||
557
(s = BN_bin2bn(sig+bnlen, bnlen, NULL)) == NULL) {
558
ossl_error("d2i_ECDSA_SIG failed");
559
ECDSA_SIG_free(ret);
560
ret = NULL;
561
goto done;
565
ECDSA_SIG_free(ret);
566
ret = NULL;
567
goto done;
568
}
569
r = s = NULL; /* now owned by ret */
570
/* success */
574
free(sig);
575
576
return (ret);
577
}
578
579
static int
580
pkcs11_ecdsa_start_wrapper(void)
581
{
582
int (*orig_sign)(int, const unsigned char *, int, unsigned char *,
583
unsigned int *, const BIGNUM *, const BIGNUM *, EC_KEY *) = NULL;
584
585
if (ec_key_method != NULL)
586
return (0);
587
ec_key_idx = EC_KEY_get_ex_new_index(0, "ssh-pkcs11-ecdsa",
588
NULL, NULL, pkcs11_k11_free);
589
if (ec_key_idx == -1)
590
return (-1);
591
ec_key_method = EC_KEY_METHOD_new(EC_KEY_OpenSSL());
592
if (ec_key_method == NULL)
593
return (-1);
594
EC_KEY_METHOD_get_sign(ec_key_method, &orig_sign, NULL, NULL);
595
EC_KEY_METHOD_set_sign(ec_key_method, orig_sign, NULL, ecdsa_do_sign);
596
return (0);
597
}
598
599
static int
600
pkcs11_ecdsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
601
CK_ATTRIBUTE *keyid_attrib, EC_KEY *ec)
602
{
603
struct pkcs11_key *k11;
604
605
if (pkcs11_ecdsa_start_wrapper() == -1)
606
return (-1);
607
608
k11 = xcalloc(1, sizeof(*k11));
609
k11->provider = provider;
610
provider->refcount++; /* provider referenced by ECDSA key */
611
k11->slotidx = slotidx;
612
/* identify key object on smartcard */
613
k11->keyid_len = keyid_attrib->ulValueLen;
614
k11->keyid = xmalloc(k11->keyid_len);
615
memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
616
624
/* remove trailing spaces */
625
static void
627
{
628
size_t i;
629
630
if (!len)
631
return;
632
for (i = len - 1; i > 0; i--)
633
if (i == len - 1 || buf[i] == ' ')
634
buf[i] = '\0';
635
else
636
break;
637
}
638
639
/*
640
* open a pkcs11 session and login if required.
641
* if pin == NULL we delay login until key use
642
*/
643
static int
644
pkcs11_open_session(struct pkcs11_provider *p, CK_ULONG slotidx, char *pin,
645
CK_ULONG user)
646
{
648
CK_FUNCTION_LIST *f;
650
CK_SESSION_HANDLE session;
652
653
f = p->function_list;
654
si = &p->slotinfo[slotidx];
655
656
login_required = si->token.flags & CKF_LOGIN_REQUIRED;
657
658
/* fail early before opening session */
661
error("pin required");
663
}
664
if ((rv = f->C_OpenSession(p->slotlist[slotidx], CKF_RW_SESSION|
666
error("C_OpenSession failed: %lu", rv);
667
return (-1);
668
}
669
if (login_required && pin != NULL && strlen(pin) != 0) {
670
rv = f->C_Login(session, user, (u_char *)pin, strlen(pin));
672
error("C_Login failed: %lu", rv);
673
ret = (rv == CKR_PIN_LOCKED) ?
674
-SSH_PKCS11_ERR_PIN_LOCKED :
675
-SSH_PKCS11_ERR_LOGIN_FAIL;
676
if ((rv = f->C_CloseSession(session)) != CKR_OK)
677
error("C_CloseSession failed: %lu", rv);
679
}
681
}
683
return (0);
684
}
685
686
static int
687
pkcs11_key_included(struct sshkey ***keysp, int *nkeys, struct sshkey *key)
698
static struct sshkey *
699
pkcs11_fetch_ecdsa_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx,
700
CK_OBJECT_HANDLE *obj)
701
{
702
CK_ATTRIBUTE key_attr[3];
703
CK_SESSION_HANDLE session;
704
CK_FUNCTION_LIST *f = NULL;
705
CK_RV rv;
707
EC_KEY *ec = NULL;
708
EC_GROUP *group = NULL;
709
struct sshkey *key = NULL;
710
const unsigned char *attrp = NULL;
711
int i;
712
int nid;
713
714
memset(&key_attr, 0, sizeof(key_attr));
715
key_attr[0].type = CKA_ID;
716
key_attr[1].type = CKA_EC_POINT;
717
key_attr[2].type = CKA_EC_PARAMS;
718
719
session = p->slotinfo[slotidx].session;
720
f = p->function_list;
721
722
/* figure out size of the attributes */
723
rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
724
if (rv != CKR_OK) {
725
error("C_GetAttributeValue failed: %lu", rv);
726
return (NULL);
727
}
728
729
/*
730
* Allow CKA_ID (always first attribute) to be empty, but
731
* ensure that none of the others are zero length.
732
* XXX assumes CKA_ID is always first.
733
*/
734
if (key_attr[1].ulValueLen == 0 ||
735
key_attr[2].ulValueLen == 0) {
736
error("invalid attribute length");
737
return (NULL);
738
}
739
740
/* allocate buffers for attributes */
741
for (i = 0; i < 3; i++)
742
if (key_attr[i].ulValueLen > 0)
743
key_attr[i].pValue = xcalloc(1, key_attr[i].ulValueLen);
744
745
/* retrieve ID, public point and curve parameters of EC key */
746
rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
747
if (rv != CKR_OK) {
748
error("C_GetAttributeValue failed: %lu", rv);
749
goto fail;
750
}
751
752
ec = EC_KEY_new();
753
if (ec == NULL) {
754
error("EC_KEY_new failed");
755
goto fail;
756
}
757
758
attrp = key_attr[2].pValue;
759
group = d2i_ECPKParameters(NULL, &attrp, key_attr[2].ulValueLen);
760
if (group == NULL) {
761
ossl_error("d2i_ECPKParameters failed");
762
goto fail;
763
}
764
765
if (EC_KEY_set_group(ec, group) == 0) {
766
ossl_error("EC_KEY_set_group failed");
767
goto fail;
768
}
769
770
if (key_attr[1].ulValueLen <= 2) {
771
error("CKA_EC_POINT too small");
772
goto fail;
773
}
774
775
attrp = key_attr[1].pValue;
776
octet = d2i_ASN1_OCTET_STRING(NULL, &attrp, key_attr[1].ulValueLen);
777
if (octet == NULL) {
778
ossl_error("d2i_ASN1_OCTET_STRING failed");
779
goto fail;
780
}
781
attrp = octet->data;
782
if (o2i_ECPublicKey(&ec, &attrp, octet->length) == NULL) {
783
ossl_error("o2i_ECPublicKey failed");
784
goto fail;
785
}
786
787
nid = sshkey_ecdsa_key_to_nid(ec);
788
if (nid < 0) {
789
error("couldn't get curve nid");
790
goto fail;
791
}
792
793
if (pkcs11_ecdsa_wrap(p, slotidx, &key_attr[0], ec))
794
goto fail;
795
796
key = sshkey_new(KEY_UNSPEC);
797
if (key == NULL) {
798
error("sshkey_new failed");
799
goto fail;
800
}
801
802
key->ecdsa = ec;
803
key->ecdsa_nid = nid;
804
key->type = KEY_ECDSA;
805
key->flags |= SSHKEY_FLAG_EXT;
806
ec = NULL; /* now owned by key */
807
808
fail:
809
for (i = 0; i < 3; i++)
810
free(key_attr[i].pValue);
811
if (ec)
812
EC_KEY_free(ec);
813
if (group)
814
EC_GROUP_free(group);
821
822
static struct sshkey *
823
pkcs11_fetch_rsa_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx,
824
CK_OBJECT_HANDLE *obj)
825
{
826
CK_ATTRIBUTE key_attr[3];
827
CK_SESSION_HANDLE session;
828
CK_FUNCTION_LIST *f = NULL;
829
CK_RV rv;
830
RSA *rsa = NULL;
831
BIGNUM *rsa_n, *rsa_e;
832
struct sshkey *key = NULL;
833
int i;
834
835
memset(&key_attr, 0, sizeof(key_attr));
836
key_attr[0].type = CKA_ID;
837
key_attr[1].type = CKA_MODULUS;
838
key_attr[2].type = CKA_PUBLIC_EXPONENT;
839
840
session = p->slotinfo[slotidx].session;
841
f = p->function_list;
842
843
/* figure out size of the attributes */
844
rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
845
if (rv != CKR_OK) {
846
error("C_GetAttributeValue failed: %lu", rv);
847
return (NULL);
848
}
849
850
/*
851
* Allow CKA_ID (always first attribute) to be empty, but
852
* ensure that none of the others are zero length.
853
* XXX assumes CKA_ID is always first.
854
*/
855
if (key_attr[1].ulValueLen == 0 ||
856
key_attr[2].ulValueLen == 0) {
857
error("invalid attribute length");
858
return (NULL);
859
}
860
861
/* allocate buffers for attributes */
862
for (i = 0; i < 3; i++)
863
if (key_attr[i].ulValueLen > 0)
864
key_attr[i].pValue = xcalloc(1, key_attr[i].ulValueLen);
865
866
/* retrieve ID, modulus and public exponent of RSA key */
867
rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
868
if (rv != CKR_OK) {
869
error("C_GetAttributeValue failed: %lu", rv);
870
goto fail;
871
}
872
873
rsa = RSA_new();
874
if (rsa == NULL) {
875
error("RSA_new failed");
876
goto fail;
877
}
878
879
rsa_n = BN_bin2bn(key_attr[1].pValue, key_attr[1].ulValueLen, NULL);
880
rsa_e = BN_bin2bn(key_attr[2].pValue, key_attr[2].ulValueLen, NULL);
881
if (rsa_n == NULL || rsa_e == NULL) {
882
error("BN_bin2bn failed");
883
goto fail;
884
}
885
if (!RSA_set0_key(rsa, rsa_n, rsa_e, NULL))
887
rsa_n = rsa_e = NULL; /* transferred */
888
889
if (pkcs11_rsa_wrap(p, slotidx, &key_attr[0], rsa))
890
goto fail;
891
892
key = sshkey_new(KEY_UNSPEC);
893
if (key == NULL) {
894
error("sshkey_new failed");
895
goto fail;
896
}
897
898
key->rsa = rsa;
899
key->type = KEY_RSA;
900
key->flags |= SSHKEY_FLAG_EXT;
901
rsa = NULL; /* now owned by key */
902
903
fail:
904
for (i = 0; i < 3; i++)
905
free(key_attr[i].pValue);
906
RSA_free(rsa);
907
908
return (key);
909
}
910
914
{
915
CK_ATTRIBUTE cert_attr[3];
916
CK_SESSION_HANDLE session;
917
CK_FUNCTION_LIST *f = NULL;
918
CK_RV rv;
919
X509 *x509 = NULL;
931
const u_char *cp;
932
char *subject = NULL;
933
934
*keyp = NULL;
935
*labelp = NULL;
936
937
memset(&cert_attr, 0, sizeof(cert_attr));
938
cert_attr[0].type = CKA_ID;
939
cert_attr[1].type = CKA_SUBJECT;
940
cert_attr[2].type = CKA_VALUE;
941
942
session = p->slotinfo[slotidx].session;
943
f = p->function_list;
944
945
/* figure out size of the attributes */
946
rv = f->C_GetAttributeValue(session, *obj, cert_attr, 3);
947
if (rv != CKR_OK) {
948
error("C_GetAttributeValue failed: %lu", rv);
950
}
951
952
/*
953
* Allow CKA_ID (always first attribute) to be empty, but
954
* ensure that none of the others are zero length.
955
* XXX assumes CKA_ID is always first.
956
*/
957
if (cert_attr[1].ulValueLen == 0 ||
958
cert_attr[2].ulValueLen == 0) {
959
error("invalid attribute length");
961
}
962
963
/* allocate buffers for attributes */
964
for (i = 0; i < 3; i++)
965
if (cert_attr[i].ulValueLen > 0)
966
cert_attr[i].pValue = xcalloc(1, cert_attr[i].ulValueLen);
967
968
/* retrieve ID, subject and value of certificate */
969
rv = f->C_GetAttributeValue(session, *obj, cert_attr, 3);
970
if (rv != CKR_OK) {
971
error("C_GetAttributeValue failed: %lu", rv);
975
/* Decode DER-encoded cert subject */
976
cp = cert_attr[2].pValue;
977
if ((x509_name = d2i_X509_NAME(NULL, &cp,
978
cert_attr[1].ulValueLen)) == NULL ||
979
(subject = X509_NAME_oneline(x509_name, NULL, 0)) == NULL)
980
subject = xstrdup("invalid subject");
981
X509_NAME_free(x509_name);
992
}
993
994
if (EVP_PKEY_base_id(evp) == EVP_PKEY_RSA) {
995
if (EVP_PKEY_get0_RSA(evp) == NULL) {
996
error("invalid x509; no rsa key");
998
}
999
if ((rsa = RSAPublicKey_dup(EVP_PKEY_get0_RSA(evp))) == NULL) {
1000
error("RSAPublicKey_dup failed");
1006
1007
key = sshkey_new(KEY_UNSPEC);
1008
if (key == NULL) {
1009
error("sshkey_new failed");
1011
}
1012
1013
key->rsa = rsa;
1014
key->type = KEY_RSA;
1015
key->flags |= SSHKEY_FLAG_EXT;
1016
rsa = NULL; /* now owned by key */
1026
}
1027
1028
nid = sshkey_ecdsa_key_to_nid(ec);
1029
if (nid < 0) {
1030
error("couldn't get curve nid");
1036
1037
key = sshkey_new(KEY_UNSPEC);
1038
if (key == NULL) {
1039
error("sshkey_new failed");
1041
}
1042
1043
key->ecdsa = ec;
1044
key->ecdsa_nid = nid;
1045
key->type = KEY_ECDSA;
1046
key->flags |= SSHKEY_FLAG_EXT;
1047
ec = NULL; /* now owned by key */
1054
for (i = 0; i < 3; i++)
1055
free(cert_attr[i].pValue);
1056
X509_free(x509);
1057
RSA_free(rsa);
1061
if (key == NULL) {
1062
free(subject);
1063
return -1;
1064
}
1065
/* success */
1066
*keyp = key;
1067
*labelp = subject;
1068
return 0;
1072
static int
1073
have_rsa_key(const RSA *rsa)
1074
{
1075
const BIGNUM *rsa_n, *rsa_e;
1076
1077
RSA_get0_key(rsa, &rsa_n, &rsa_e, NULL);
1078
return rsa_n != NULL && rsa_e != NULL;
1079
}
1082
static void
1083
note_key(struct pkcs11_provider *p, CK_ULONG slotidx, const char *context,
1084
struct sshkey *key)
1085
{
1086
char *fp;
1087
1088
if ((fp = sshkey_fingerprint(key, SSH_FP_HASH_DEFAULT,
1089
SSH_FP_DEFAULT)) == NULL) {
1090
error_f("sshkey_fingerprint failed");
1091
return;
1092
}
1093
debug2("%s: provider %s slot %lu: %s %s", context, p->name,
1094
(u_long)slotidx, sshkey_type(key), fp);
1095
free(fp);
1096
}
1097
1098
/*
1099
* lookup certificates for token in slot identified by slotidx,
1100
* add 'wrapped' public keys to the 'keysp' array and increment nkeys.
1101
* keysp points to an (possibly empty) array with *nkeys keys.
1102
*/
1106
{
1107
struct sshkey *key = NULL;
1108
CK_OBJECT_CLASS key_class;
1109
CK_ATTRIBUTE key_attr[1];
1110
CK_SESSION_HANDLE session;
1111
CK_FUNCTION_LIST *f = NULL;
1112
CK_RV rv;
1113
CK_OBJECT_HANDLE obj;
1114
CK_ULONG n = 0;
1115
int ret = -1;
1117
1118
memset(&key_attr, 0, sizeof(key_attr));
1119
memset(&obj, 0, sizeof(obj));
1120
1121
key_class = CKO_CERTIFICATE;
1122
key_attr[0].type = CKA_CLASS;
1123
key_attr[0].pValue = &key_class;
1124
key_attr[0].ulValueLen = sizeof(key_class);
1126
session = p->slotinfo[slotidx].session;
1127
f = p->function_list;
1128
1129
rv = f->C_FindObjectsInit(session, key_attr, 1);
1130
if (rv != CKR_OK) {
1131
error("C_FindObjectsInit failed: %lu", rv);
1133
}
1135
while (1) {
1136
CK_CERTIFICATE_TYPE ck_cert_type;
1137
1138
rv = f->C_FindObjects(session, &obj, 1, &n);
1139
if (rv != CKR_OK) {
1140
error("C_FindObjects failed: %lu", rv);
1141
goto fail;
1142
}
1144
break;
1145
1146
memset(&ck_cert_type, 0, sizeof(ck_cert_type));
1147
memset(&key_attr, 0, sizeof(key_attr));
1148
key_attr[0].type = CKA_CERTIFICATE_TYPE;
1149
key_attr[0].pValue = &ck_cert_type;
1150
key_attr[0].ulValueLen = sizeof(ck_cert_type);
1151
1152
rv = f->C_GetAttributeValue(session, obj, key_attr, 1);
1153
if (rv != CKR_OK) {
1154
error("C_GetAttributeValue failed: %lu", rv);
1156
}
1162
if (pkcs11_fetch_x509_pubkey(p, slotidx, &obj,
1163
&key, &label) != 0) {
1164
error("failed to fetch key");
1165
continue;
1166
}
1176
sshkey_free(key);
1177
} else {
1178
/* expand key array and add key */
1179
*keysp = xrecallocarray(*keysp, *nkeys,
1180
*nkeys + 1, sizeof(struct sshkey *));
1181
(*keysp)[*nkeys] = key;
1182
if (labelsp != NULL) {
1183
*labelsp = xrecallocarray(*labelsp, *nkeys,
1184
*nkeys + 1, sizeof(char *));
1185
(*labelsp)[*nkeys] = xstrdup((char *)label);
1186
}
1192
ret = 0;
1193
fail:
1194
rv = f->C_FindObjectsFinal(session);
1195
if (rv != CKR_OK) {
1196
error("C_FindObjectsFinal failed: %lu", rv);
1197
ret = -1;
1198
}
1199
1200
return (ret);
1201
}
1202
1203
/*
1204
* lookup public keys for token in slot identified by slotidx,
1205
* add 'wrapped' public keys to the 'keysp' array and increment nkeys.
1206
* keysp points to an (possibly empty) array with *nkeys keys.
1207
*/
1208
static int
1209
pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx,
1215
CK_SESSION_HANDLE session;
1216
CK_FUNCTION_LIST *f = NULL;
1217
CK_RV rv;
1218
CK_OBJECT_HANDLE obj;
1219
CK_ULONG n = 0;
1220
int ret = -1;
1221
1222
memset(&key_attr, 0, sizeof(key_attr));
1223
memset(&obj, 0, sizeof(obj));
1224
1225
key_class = CKO_PUBLIC_KEY;
1226
key_attr[0].type = CKA_CLASS;
1227
key_attr[0].pValue = &key_class;
1228
key_attr[0].ulValueLen = sizeof(key_class);
1229
1230
session = p->slotinfo[slotidx].session;
1231
f = p->function_list;
1232
1233
rv = f->C_FindObjectsInit(session, key_attr, 1);
1234
if (rv != CKR_OK) {
1235
error("C_FindObjectsInit failed: %lu", rv);
1236
goto fail;
1237
}
1238
1239
while (1) {
1240
CK_KEY_TYPE ck_key_type;
1242
1243
rv = f->C_FindObjects(session, &obj, 1, &n);
1244
if (rv != CKR_OK) {
1245
error("C_FindObjects failed: %lu", rv);
1246
goto fail;
1247
}
1248
if (n == 0)
1249
break;
1250
1251
memset(&ck_key_type, 0, sizeof(ck_key_type));
1252
memset(&key_attr, 0, sizeof(key_attr));
1253
key_attr[0].type = CKA_KEY_TYPE;
1254
key_attr[0].pValue = &ck_key_type;
1255
key_attr[0].ulValueLen = sizeof(ck_key_type);
1256
key_attr[1].type = CKA_LABEL;
1257
key_attr[1].pValue = &label;
1258
key_attr[1].ulValueLen = sizeof(label) - 1;
1262
error("C_GetAttributeValue failed: %lu", rv);
1268
switch (ck_key_type) {
1269
case CKK_RSA:
1270
key = pkcs11_fetch_rsa_pubkey(p, slotidx, &obj);
1271
break;
1273
case CKK_ECDSA:
1274
key = pkcs11_fetch_ecdsa_pubkey(p, slotidx, &obj);
1275
break;
1280
error("skipping unsupported key type");
1281
}
1282
1283
if (key == NULL) {
1284
error("failed to fetch key");
1285
continue;
1286
}
1291
} else {
1292
/* expand key array and add key */
1293
*keysp = xrecallocarray(*keysp, *nkeys,
1294
*nkeys + 1, sizeof(struct sshkey *));
1295
(*keysp)[*nkeys] = key;
1296
if (labelsp != NULL) {
1297
*labelsp = xrecallocarray(*labelsp, *nkeys,
1298
*nkeys + 1, sizeof(char *));
1299
(*labelsp)[*nkeys] = xstrdup((char *)label);
1300
}
1304
}
1305
1306
ret = 0;
1307
fail:
1308
rv = f->C_FindObjectsFinal(session);
1309
if (rv != CKR_OK) {
1310
error("C_FindObjectsFinal failed: %lu", rv);
1315
}
1316
1317
#ifdef WITH_PKCS11_KEYGEN
1318
#define FILL_ATTR(attr, idx, typ, val, len) \
1319
{ (attr[idx]).type=(typ); (attr[idx]).pValue=(val); (attr[idx]).ulValueLen=len; idx++; }
1320
1321
static struct sshkey *
1322
pkcs11_rsa_generate_private_key(struct pkcs11_provider *p, CK_ULONG slotidx,
1323
char *label, CK_ULONG bits, CK_BYTE keyid, u_int32_t *err)
1324
{
1325
struct pkcs11_slotinfo *si;
1326
char *plabel = label ? label : "";
1327
int npub = 0, npriv = 0;
1328
CK_RV rv;
1329
CK_FUNCTION_LIST *f;
1330
CK_SESSION_HANDLE session;
1331
CK_BBOOL true_val = CK_TRUE, false_val = CK_FALSE;
1332
CK_OBJECT_HANDLE pubKey, privKey;
1333
CK_ATTRIBUTE tpub[16], tpriv[16];
1334
CK_MECHANISM mech = {
1335
CKM_RSA_PKCS_KEY_PAIR_GEN, NULL_PTR, 0
1336
};
1337
CK_BYTE pubExponent[] = {
1338
0x01, 0x00, 0x01 /* RSA_F4 in bytes */
1339
};
1340
pubkey_filter[0].pValue = &pubkey_class;
1341
cert_filter[0].pValue = &cert_class;
1342
1343
*err = 0;
1344
1345
FILL_ATTR(tpub, npub, CKA_TOKEN, &true_val, sizeof(true_val));
1346
FILL_ATTR(tpub, npub, CKA_LABEL, plabel, strlen(plabel));
1347
FILL_ATTR(tpub, npub, CKA_ENCRYPT, &false_val, sizeof(false_val));
1348
FILL_ATTR(tpub, npub, CKA_VERIFY, &true_val, sizeof(true_val));
1349
FILL_ATTR(tpub, npub, CKA_VERIFY_RECOVER, &false_val,
1350
sizeof(false_val));
1351
FILL_ATTR(tpub, npub, CKA_WRAP, &false_val, sizeof(false_val));
1352
FILL_ATTR(tpub, npub, CKA_DERIVE, &false_val, sizeof(false_val));
1353
FILL_ATTR(tpub, npub, CKA_MODULUS_BITS, &bits, sizeof(bits));
1354
FILL_ATTR(tpub, npub, CKA_PUBLIC_EXPONENT, pubExponent,
1355
sizeof(pubExponent));
1356
FILL_ATTR(tpub, npub, CKA_ID, &keyid, sizeof(keyid));
1357
1358
FILL_ATTR(tpriv, npriv, CKA_TOKEN, &true_val, sizeof(true_val));
1359
FILL_ATTR(tpriv, npriv, CKA_LABEL, plabel, strlen(plabel));
1360
FILL_ATTR(tpriv, npriv, CKA_PRIVATE, &true_val, sizeof(true_val));
1361
FILL_ATTR(tpriv, npriv, CKA_SENSITIVE, &true_val, sizeof(true_val));
1362
FILL_ATTR(tpriv, npriv, CKA_DECRYPT, &false_val, sizeof(false_val));
1363
FILL_ATTR(tpriv, npriv, CKA_SIGN, &true_val, sizeof(true_val));
1364
FILL_ATTR(tpriv, npriv, CKA_SIGN_RECOVER, &false_val,
1365
sizeof(false_val));
1366
FILL_ATTR(tpriv, npriv, CKA_UNWRAP, &false_val, sizeof(false_val));
1367
FILL_ATTR(tpriv, npriv, CKA_DERIVE, &false_val, sizeof(false_val));
1368
FILL_ATTR(tpriv, npriv, CKA_ID, &keyid, sizeof(keyid));
1369
1370
f = p->function_list;
1371
si = &p->slotinfo[slotidx];
1372
session = si->session;
1373
1374
if ((rv = f->C_GenerateKeyPair(session, &mech, tpub, npub, tpriv, npriv,
1375
&pubKey, &privKey)) != CKR_OK) {
1377
*err = rv;
1378
return NULL;
1379
}
1380
1381
return pkcs11_fetch_rsa_pubkey(p, slotidx, &pubKey);
1382
}
1383
1384
static int
1385
pkcs11_decode_hex(const char *hex, unsigned char **dest, size_t *rlen)
1386
{
1387
size_t i, len;
1388
char ptr[3];
1389
1390
if (dest)
1391
*dest = NULL;
1392
if (rlen)
1393
*rlen = 0;
1394
1395
if ((len = strlen(hex)) % 2)
1396
return -1;
1397
len /= 2;
1398
1399
*dest = xmalloc(len);
1400
1401
ptr[2] = '\0';
1402
for (i = 0; i < len; i++) {
1403
ptr[0] = hex[2 * i];
1404
ptr[1] = hex[(2 * i) + 1];
1405
if (!isxdigit(ptr[0]) || !isxdigit(ptr[1]))
1406
return -1;
1407
(*dest)[i] = (unsigned char)strtoul(ptr, NULL, 16);
1408
}
1409
1410
if (rlen)
1411
*rlen = len;
1412
1413
return 0;
1414
}
1415
1416
static struct ec_curve_info {
1417
const char *name;
1418
const char *oid;
1419
const char *oid_encoded;
1420
size_t size;
1421
} ec_curve_infos[] = {
1422
{"prime256v1", "1.2.840.10045.3.1.7", "06082A8648CE3D030107", 256},
1423
{"secp384r1", "1.3.132.0.34", "06052B81040022", 384},
1424
{"secp521r1", "1.3.132.0.35", "06052B81040023", 521},
1426
};
1427
1428
static struct sshkey *
1429
pkcs11_ecdsa_generate_private_key(struct pkcs11_provider *p, CK_ULONG slotidx,
1430
char *label, CK_ULONG bits, CK_BYTE keyid, u_int32_t *err)
1431
{
1432
struct pkcs11_slotinfo *si;
1433
char *plabel = label ? label : "";
1434
int i;
1435
size_t ecparams_size;
1436
unsigned char *ecparams = NULL;
1437
int npub = 0, npriv = 0;
1438
CK_RV rv;
1439
CK_FUNCTION_LIST *f;
1440
CK_SESSION_HANDLE session;
1441
CK_BBOOL true_val = CK_TRUE, false_val = CK_FALSE;
1442
CK_OBJECT_HANDLE pubKey, privKey;
1443
CK_MECHANISM mech = {
1444
CKM_EC_KEY_PAIR_GEN, NULL_PTR, 0
1445
};
1446
CK_ATTRIBUTE tpub[16], tpriv[16];
1447
1448
*err = 0;
1449
1450
for (i = 0; ec_curve_infos[i].name; i++) {
1451
if (ec_curve_infos[i].size == bits)
1452
break;
1453
}
1454
if (!ec_curve_infos[i].name) {
1456
return NULL;
1457
}
1458
if (pkcs11_decode_hex(ec_curve_infos[i].oid_encoded, &ecparams,
1459
&ecparams_size) == -1) {
1461
return NULL;
1462
}
1463
1464
FILL_ATTR(tpub, npub, CKA_TOKEN, &true_val, sizeof(true_val));
1465
FILL_ATTR(tpub, npub, CKA_LABEL, plabel, strlen(plabel));
1466
FILL_ATTR(tpub, npub, CKA_ENCRYPT, &false_val, sizeof(false_val));
1467
FILL_ATTR(tpub, npub, CKA_VERIFY, &true_val, sizeof(true_val));
1468
FILL_ATTR(tpub, npub, CKA_VERIFY_RECOVER, &false_val,
1469
sizeof(false_val));
1470
FILL_ATTR(tpub, npub, CKA_WRAP, &false_val, sizeof(false_val));
1471
FILL_ATTR(tpub, npub, CKA_DERIVE, &false_val, sizeof(false_val));
1472
FILL_ATTR(tpub, npub, CKA_EC_PARAMS, ecparams, ecparams_size);
1473
FILL_ATTR(tpub, npub, CKA_ID, &keyid, sizeof(keyid));
1474
1475
FILL_ATTR(tpriv, npriv, CKA_TOKEN, &true_val, sizeof(true_val));
1476
FILL_ATTR(tpriv, npriv, CKA_LABEL, plabel, strlen(plabel));
1477
FILL_ATTR(tpriv, npriv, CKA_PRIVATE, &true_val, sizeof(true_val));
1478
FILL_ATTR(tpriv, npriv, CKA_SENSITIVE, &true_val, sizeof(true_val));
1479
FILL_ATTR(tpriv, npriv, CKA_DECRYPT, &false_val, sizeof(false_val));
1480
FILL_ATTR(tpriv, npriv, CKA_SIGN, &true_val, sizeof(true_val));
1481
FILL_ATTR(tpriv, npriv, CKA_SIGN_RECOVER, &false_val,
1482
sizeof(false_val));
1483
FILL_ATTR(tpriv, npriv, CKA_UNWRAP, &false_val, sizeof(false_val));
1484
FILL_ATTR(tpriv, npriv, CKA_DERIVE, &false_val, sizeof(false_val));
1485
FILL_ATTR(tpriv, npriv, CKA_ID, &keyid, sizeof(keyid));
1486
1487
f = p->function_list;
1488
si = &p->slotinfo[slotidx];
1489
session = si->session;
1490
1491
if ((rv = f->C_GenerateKeyPair(session, &mech, tpub, npub, tpriv, npriv,
1492
&pubKey, &privKey)) != CKR_OK) {
1494
*err = rv;
1495
return NULL;
1496
}
1497
1498
return pkcs11_fetch_ecdsa_pubkey(p, slotidx, &pubKey);
1499
}
1500
#endif /* WITH_PKCS11_KEYGEN */
1501
1502
/*
1503
* register a new provider, fails if provider already exists. if
1504
* keyp is provided, fetch keys.
1505
*/
1506
static int
1507
pkcs11_register_provider(char *provider_id, char *pin,
1508
struct sshkey ***keyp, char ***labelsp,
1510
{
1511
int nkeys, need_finalize = 0;
1513
struct pkcs11_provider *p = NULL;
1514
void *handle = NULL;
1515
CK_RV (*getfunctionlist)(CK_FUNCTION_LIST **);
1516
CK_RV rv;
1517
CK_FUNCTION_LIST *f = NULL;
1518
CK_TOKEN_INFO *token;
1519
CK_ULONG i;
1520
1521
if (providerp == NULL)
1522
goto fail;
1523
*providerp = NULL;
1524
1525
if (keyp != NULL)
1526
*keyp = NULL;
1530
if (pkcs11_provider_lookup(provider_id) != NULL) {
1532
goto fail;
1533
}
1535
if ((handle = dlopen(provider_id, RTLD_NOW)) == NULL) {
1536
error("dlopen %s failed: %s", provider_id, dlerror());
1537
goto fail;
1538
}
1539
if ((getfunctionlist = dlsym(handle, "C_GetFunctionList")) == NULL) {
1540
error("dlsym(C_GetFunctionList) failed: %s", dlerror());
1541
goto fail;
1542
}
1543
p = xcalloc(1, sizeof(*p));
1544
p->name = xstrdup(provider_id);
1545
p->handle = handle;
1546
/* setup the pkcs11 callbacks */
1547
if ((rv = (*getfunctionlist)(&f)) != CKR_OK) {
1548
error("C_GetFunctionList for provider %s failed: %lu",
1549
provider_id, rv);
1550
goto fail;
1551
}
1552
p->function_list = f;
1553
if ((rv = f->C_Initialize(NULL)) != CKR_OK) {
1554
error("C_Initialize for provider %s failed: %lu",
1555
provider_id, rv);
1556
goto fail;
1557
}
1558
need_finalize = 1;
1559
if ((rv = f->C_GetInfo(&p->info)) != CKR_OK) {
1562
goto fail;
1563
}
1564
rmspace(p->info.manufacturerID, sizeof(p->info.manufacturerID));
1565
rmspace(p->info.libraryDescription, sizeof(p->info.libraryDescription));
1567
" libraryDescription <%s> libraryVersion %d.%d",
1569
p->info.manufacturerID,
1570
p->info.cryptokiVersion.major,
1571
p->info.cryptokiVersion.minor,
1572
p->info.libraryDescription,
1573
p->info.libraryVersion.major,
1574
p->info.libraryVersion.minor);
1575
if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) {
1576
error("C_GetSlotList failed: %lu", rv);
1577
goto fail;
1578
}
1579
if (p->nslots == 0) {
1582
goto fail;
1583
}
1584
p->slotlist = xcalloc(p->nslots, sizeof(CK_SLOT_ID));
1585
if ((rv = f->C_GetSlotList(CK_TRUE, p->slotlist, &p->nslots))
1586
!= CKR_OK) {
1587
error("C_GetSlotList for provider %s failed: %lu",
1588
provider_id, rv);
1589
goto fail;
1590
}
1591
p->slotinfo = xcalloc(p->nslots, sizeof(struct pkcs11_slotinfo));
1592
p->valid = 1;
1593
nkeys = 0;
1594
for (i = 0; i < p->nslots; i++) {
1595
token = &p->slotinfo[i].token;
1596
if ((rv = f->C_GetTokenInfo(p->slotlist[i], token))
1597
!= CKR_OK) {
1600
continue;
1601
}
1603
debug2_f("ignoring uninitialised token in "
1604
"provider %s slot %lu", provider_id, (u_long)i);
1607
rmspace(token->label, sizeof(token->label));
1608
rmspace(token->manufacturerID, sizeof(token->manufacturerID));
1609
rmspace(token->model, sizeof(token->model));
1610
rmspace(token->serialNumber, sizeof(token->serialNumber));
1611
debug("provider %s slot %lu: label <%s> manufacturerID <%s> "
1612
"model <%s> serial <%s> flags 0x%lx",
1613
provider_id, (unsigned long)i,
1614
token->label, token->manufacturerID, token->model,
1615
token->serialNumber, token->flags);
1616
/*
1617
* open session, login with pin and retrieve public
1618
* keys (if keyp is provided)
1619
*/
1620
if ((ret = pkcs11_open_session(p, i, pin, user)) != 0 ||
1621
keyp == NULL)
1622
continue;
1623
pkcs11_fetch_keys(p, i, keyp, labelsp, &nkeys);
1624
pkcs11_fetch_certs(p, i, keyp, labelsp, &nkeys);
1625
if (nkeys == 0 && !p->slotinfo[i].logged_in &&
1626
pkcs11_interactive) {
1627
/*
1628
* Some tokens require login before they will
1629
* expose keys.
1630
*/
1631
if (pkcs11_login_slot(p, &p->slotinfo[i],
1632
CKU_USER) < 0) {
1633
error("login failed");
1636
pkcs11_fetch_keys(p, i, keyp, labelsp, &nkeys);
1637
pkcs11_fetch_certs(p, i, keyp, labelsp, &nkeys);
1639
}
1640
1641
/* now owned by caller */
1642
*providerp = p;
1643
1644
TAILQ_INSERT_TAIL(&pkcs11_providers, p, next);
1645
p->refcount++; /* add to provider list */
1646
1647
return (nkeys);
1648
fail:
1649
if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK)
1652
if (p) {
1657
}
1658
if (handle)
1659
dlclose(handle);
1663
}
1665
/*
1666
* register a new provider and get number of keys hold by the token,
1667
* fails if provider already exists
1668
*/
1669
int
1670
pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp,
1671
char ***labelsp)
1676
nkeys = pkcs11_register_provider(provider_id, pin, keyp, labelsp,
1677
&p, CKU_USER);
1679
/* no keys found or some other error, de-register provider */
1680
if (nkeys <= 0 && p != NULL) {
1681
TAILQ_REMOVE(&pkcs11_providers, p, next);
1682
pkcs11_provider_finalize(p);
1683
pkcs11_provider_unref(p);
1684
}
1685
if (nkeys == 0)
1687
1688
return (nkeys);
1689
}
1690
1691
#ifdef WITH_PKCS11_KEYGEN
1692
struct sshkey *
1693
pkcs11_gakp(char *provider_id, char *pin, unsigned int slotidx, char *label,
1694
unsigned int type, unsigned int bits, unsigned char keyid, u_int32_t *err)
1695
{
1696
struct pkcs11_provider *p = NULL;
1697
struct pkcs11_slotinfo *si;
1698
CK_FUNCTION_LIST *f;
1699
CK_SESSION_HANDLE session;
1700
struct sshkey *k = NULL;
1701
int ret = -1, reset_pin = 0, reset_provider = 0;
1702
CK_RV rv;
1703
1704
*err = 0;
1705
1706
if ((p = pkcs11_provider_lookup(provider_id)) != NULL)
1708
else if ((ret = pkcs11_register_provider(provider_id, pin, NULL, NULL,
1709
&p, CKU_SO)) < 0) {
1711
goto out;
1712
} else
1713
reset_provider = 1;
1714
1715
f = p->function_list;
1716
si = &p->slotinfo[slotidx];
1717
session = si->session;
1718
1719
if ((rv = f->C_SetOperationState(session , pin, strlen(pin),
1720
CK_INVALID_HANDLE, CK_INVALID_HANDLE)) != CKR_OK) {
1722
reset_pin = 0;
1723
} else
1724
reset_pin = 1;
1725
1726
switch (type) {
1727
case KEY_RSA:
1728
if ((k = pkcs11_rsa_generate_private_key(p, slotidx, label,
1729
bits, keyid, err)) == NULL) {
1731
goto out;
1732
}
1733
break;
1734
case KEY_ECDSA:
1735
if ((k = pkcs11_ecdsa_generate_private_key(p, slotidx, label,
1736
bits, keyid, err)) == NULL) {
1738
goto out;
1739
}
1740
break;
1741
default:
1742
*err = SSH_PKCS11_ERR_GENERIC;
1744
goto out;
1745
}
1746
1747
out:
1748
if (reset_pin)
1749
f->C_SetOperationState(session , NULL, 0, CK_INVALID_HANDLE,
1750
CK_INVALID_HANDLE);
1751
1752
if (reset_provider)
1753
pkcs11_del_provider(provider_id);
1754
1755
return (k);
1756
}
1757
1758
struct sshkey *
1759
pkcs11_destroy_keypair(char *provider_id, char *pin, unsigned long slotidx,
1760
unsigned char keyid, u_int32_t *err)
1761
{
1762
struct pkcs11_provider *p = NULL;
1763
struct pkcs11_slotinfo *si;
1764
struct sshkey *k = NULL;
1765
int reset_pin = 0, reset_provider = 0;
1766
CK_ULONG nattrs;
1767
CK_FUNCTION_LIST *f;
1768
CK_SESSION_HANDLE session;
1769
CK_ATTRIBUTE attrs[16];
1770
CK_OBJECT_CLASS key_class;
1771
CK_KEY_TYPE key_type;
1772
CK_OBJECT_HANDLE obj = CK_INVALID_HANDLE;
1773
CK_RV rv;
1774
1775
*err = 0;
1776
1777
if ((p = pkcs11_provider_lookup(provider_id)) != NULL) {
1782
provider_id);
1783
goto out;
1784
} else
1785
reset_provider = 1;
1786
1787
f = p->function_list;
1788
si = &p->slotinfo[slotidx];
1789
session = si->session;
1790
1791
if ((rv = f->C_SetOperationState(session , pin, strlen(pin),
1792
CK_INVALID_HANDLE, CK_INVALID_HANDLE)) != CKR_OK) {
1794
reset_pin = 0;
1795
} else
1796
reset_pin = 1;
1797
1798
/* private key */
1799
nattrs = 0;
1800
key_class = CKO_PRIVATE_KEY;
1801
FILL_ATTR(attrs, nattrs, CKA_CLASS, &key_class, sizeof(key_class));
1802
FILL_ATTR(attrs, nattrs, CKA_ID, &keyid, sizeof(keyid));
1803
1804
if (pkcs11_find(p, slotidx, attrs, nattrs, &obj) == 0 &&
1805
obj != CK_INVALID_HANDLE) {
1806
if ((rv = f->C_DestroyObject(session, obj)) != CKR_OK) {
1809
*err = rv;
1810
goto out;
1811
}
1812
}
1813
1814
/* public key */
1815
nattrs = 0;
1816
key_class = CKO_PUBLIC_KEY;
1817
FILL_ATTR(attrs, nattrs, CKA_CLASS, &key_class, sizeof(key_class));
1818
FILL_ATTR(attrs, nattrs, CKA_ID, &keyid, sizeof(keyid));
1819
1820
if (pkcs11_find(p, slotidx, attrs, nattrs, &obj) == 0 &&
1821
obj != CK_INVALID_HANDLE) {
1822
1823
/* get key type */
1824
nattrs = 0;
1825
FILL_ATTR(attrs, nattrs, CKA_KEY_TYPE, &key_type,
1826
sizeof(key_type));
1827
rv = f->C_GetAttributeValue(session, obj, attrs, nattrs);
1828
if (rv != CKR_OK) {
1831
*err = rv;
1832
key_type = -1;
1833
}
1834
if (key_type == CKK_RSA)
1835
k = pkcs11_fetch_rsa_pubkey(p, slotidx, &obj);
1836
else if (key_type == CKK_ECDSA)
1837
k = pkcs11_fetch_ecdsa_pubkey(p, slotidx, &obj);
1838
1839
if ((rv = f->C_DestroyObject(session, obj)) != CKR_OK) {
1841
*err = rv;
1842
goto out;
1843
}
1844
}
1845
1846
out:
1847
if (reset_pin)
1848
f->C_SetOperationState(session , NULL, 0, CK_INVALID_HANDLE,
1849
CK_INVALID_HANDLE);
1850
1851
if (reset_provider)
1852
pkcs11_del_provider(provider_id);
1853
1854
return (k);
1855
}
1856
#endif /* WITH_PKCS11_KEYGEN */
1858
1859
#include <sys/types.h>
1860
#include <stdarg.h>
1861
#include <stdio.h>
1862
1863
#include "log.h"
1864
#include "sshkey.h"
1865
1869
error("%s: dlopen() not supported", __func__);
1870
return (-1);
1871
}
1872
1873
int
1874
pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp,
1875
char ***labelsp)