-
Notifications
You must be signed in to change notification settings - Fork 1.1k
/
processing_asymm.c
1112 lines (987 loc) · 29.1 KB
/
processing_asymm.c
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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (c) 2018-2020, Linaro Limited
*/
#include <assert.h>
#include <compiler.h>
#include <mbedtls/nist_kw.h>
#include <tee_api_defines.h>
#include <tee_internal_api.h>
#include <tee_internal_api_extensions.h>
#include "attributes.h"
#include "pkcs11_helpers.h"
#include "pkcs11_token.h"
#include "processing.h"
#include "serializer.h"
bool processing_is_tee_asymm(uint32_t proc_id)
{
switch (proc_id) {
/* RSA flavors */
case PKCS11_CKM_RSA_AES_KEY_WRAP:
case PKCS11_CKM_RSA_PKCS:
case PKCS11_CKM_RSA_PKCS_OAEP:
case PKCS11_CKM_RSA_PKCS_PSS:
case PKCS11_CKM_MD5_RSA_PKCS:
case PKCS11_CKM_SHA1_RSA_PKCS:
case PKCS11_CKM_SHA224_RSA_PKCS:
case PKCS11_CKM_SHA256_RSA_PKCS:
case PKCS11_CKM_SHA384_RSA_PKCS:
case PKCS11_CKM_SHA512_RSA_PKCS:
case PKCS11_CKM_SHA1_RSA_PKCS_PSS:
case PKCS11_CKM_SHA224_RSA_PKCS_PSS:
case PKCS11_CKM_SHA256_RSA_PKCS_PSS:
case PKCS11_CKM_SHA384_RSA_PKCS_PSS:
case PKCS11_CKM_SHA512_RSA_PKCS_PSS:
/* EC flavors */
case PKCS11_CKM_EDDSA:
case PKCS11_CKM_ECDSA:
case PKCS11_CKM_ECDH1_DERIVE:
case PKCS11_CKM_ECDSA_SHA1:
case PKCS11_CKM_ECDSA_SHA224:
case PKCS11_CKM_ECDSA_SHA256:
case PKCS11_CKM_ECDSA_SHA384:
case PKCS11_CKM_ECDSA_SHA512:
return true;
default:
return false;
}
}
static enum pkcs11_rc
pkcs2tee_algorithm(uint32_t *tee_id, uint32_t *tee_hash_id,
enum processing_func function __unused,
struct pkcs11_attribute_head *proc_params,
struct pkcs11_object *obj)
{
static const struct {
enum pkcs11_mechanism_id mech_id;
uint32_t tee_id;
uint32_t tee_hash_id;
} pkcs2tee_algo[] = {
/* RSA flavors */
{ PKCS11_CKM_RSA_AES_KEY_WRAP, 1, 0 },
{ PKCS11_CKM_RSA_PKCS, TEE_ALG_RSAES_PKCS1_V1_5, 0 },
{ PKCS11_CKM_RSA_PKCS_OAEP, 1, 0 },
{ PKCS11_CKM_RSA_PKCS_PSS, 1, 0 },
{ PKCS11_CKM_MD5_RSA_PKCS, TEE_ALG_RSASSA_PKCS1_V1_5_MD5,
TEE_ALG_MD5 },
{ PKCS11_CKM_SHA1_RSA_PKCS, TEE_ALG_RSASSA_PKCS1_V1_5_SHA1,
TEE_ALG_SHA1 },
{ PKCS11_CKM_SHA224_RSA_PKCS, TEE_ALG_RSASSA_PKCS1_V1_5_SHA224,
TEE_ALG_SHA224 },
{ PKCS11_CKM_SHA256_RSA_PKCS, TEE_ALG_RSASSA_PKCS1_V1_5_SHA256,
TEE_ALG_SHA256 },
{ PKCS11_CKM_SHA384_RSA_PKCS, TEE_ALG_RSASSA_PKCS1_V1_5_SHA384,
TEE_ALG_SHA384 },
{ PKCS11_CKM_SHA512_RSA_PKCS, TEE_ALG_RSASSA_PKCS1_V1_5_SHA512,
TEE_ALG_SHA512 },
{ PKCS11_CKM_SHA1_RSA_PKCS_PSS,
TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA1, TEE_ALG_SHA1 },
{ PKCS11_CKM_SHA224_RSA_PKCS_PSS,
TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA224, TEE_ALG_SHA224 },
{ PKCS11_CKM_SHA256_RSA_PKCS_PSS,
TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA256, TEE_ALG_SHA256 },
{ PKCS11_CKM_SHA384_RSA_PKCS_PSS,
TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA384, TEE_ALG_SHA384 },
{ PKCS11_CKM_SHA512_RSA_PKCS_PSS,
TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA512, TEE_ALG_SHA512 },
/* EC flavors (Must find key size from the object) */
{ PKCS11_CKM_ECDSA, 1, 0 },
{ PKCS11_CKM_ECDSA_SHA1, 1, TEE_ALG_SHA1 },
{ PKCS11_CKM_ECDSA_SHA224, 1, TEE_ALG_SHA224 },
{ PKCS11_CKM_ECDSA_SHA256, 1, TEE_ALG_SHA256 },
{ PKCS11_CKM_ECDSA_SHA384, 1, TEE_ALG_SHA384 },
{ PKCS11_CKM_ECDSA_SHA512, 1, TEE_ALG_SHA512 },
{ PKCS11_CKM_ECDH1_DERIVE, 1, 0 },
{ PKCS11_CKM_EDDSA, TEE_ALG_ED25519, 0 },
};
size_t n = 0;
enum pkcs11_rc rc = PKCS11_CKR_GENERAL_ERROR;
for (n = 0; n < ARRAY_SIZE(pkcs2tee_algo); n++) {
if (pkcs2tee_algo[n].mech_id == proc_params->id) {
*tee_id = pkcs2tee_algo[n].tee_id;
*tee_hash_id = pkcs2tee_algo[n].tee_hash_id;
break;
}
}
if (n == ARRAY_SIZE(pkcs2tee_algo))
return PKCS11_RV_NOT_IMPLEMENTED;
switch (proc_params->id) {
case PKCS11_CKM_RSA_PKCS_PSS:
case PKCS11_CKM_SHA1_RSA_PKCS_PSS:
case PKCS11_CKM_SHA224_RSA_PKCS_PSS:
case PKCS11_CKM_SHA256_RSA_PKCS_PSS:
case PKCS11_CKM_SHA384_RSA_PKCS_PSS:
case PKCS11_CKM_SHA512_RSA_PKCS_PSS:
rc = pkcs2tee_algo_rsa_pss(tee_id, proc_params);
break;
case PKCS11_CKM_RSA_PKCS_OAEP:
rc = pkcs2tee_algo_rsa_oaep(tee_id, tee_hash_id, proc_params);
break;
case PKCS11_CKM_RSA_AES_KEY_WRAP:
rc = pkcs2tee_algo_rsa_aes_wrap(tee_id, tee_hash_id,
proc_params);
break;
case PKCS11_CKM_ECDSA:
case PKCS11_CKM_ECDSA_SHA1:
case PKCS11_CKM_ECDSA_SHA224:
case PKCS11_CKM_ECDSA_SHA256:
case PKCS11_CKM_ECDSA_SHA384:
case PKCS11_CKM_ECDSA_SHA512:
rc = pkcs2tee_algo_ecdsa(tee_id, proc_params, obj);
break;
case PKCS11_CKM_ECDH1_DERIVE:
rc = pkcs2tee_algo_ecdh(tee_id, proc_params, obj);
break;
default:
rc = PKCS11_CKR_OK;
break;
}
/*
* PKCS#11 uses single mechanism CKM_RSA_PKCS for both ciphering and
* authentication whereas GPD TEE expects TEE_ALG_RSAES_PKCS1_V1_5 for
* ciphering and TEE_ALG_RSASSA_PKCS1_V1_5 for authentication.
*/
if (*tee_id == TEE_ALG_RSAES_PKCS1_V1_5 &&
(function == PKCS11_FUNCTION_SIGN ||
function == PKCS11_FUNCTION_VERIFY))
*tee_id = TEE_ALG_RSASSA_PKCS1_V1_5;
return rc;
}
static enum pkcs11_rc pkcs2tee_key_type(uint32_t *tee_type,
struct pkcs11_object *obj,
enum processing_func function)
{
enum pkcs11_class_id class = get_class(obj->attributes);
enum pkcs11_key_type type = get_key_type(obj->attributes);
switch (class) {
case PKCS11_CKO_PUBLIC_KEY:
case PKCS11_CKO_PRIVATE_KEY:
break;
default:
TEE_Panic(class);
break;
}
switch (type) {
case PKCS11_CKK_EC:
if (class == PKCS11_CKO_PRIVATE_KEY) {
if (function == PKCS11_FUNCTION_DERIVE)
*tee_type = TEE_TYPE_ECDH_KEYPAIR;
else
*tee_type = TEE_TYPE_ECDSA_KEYPAIR;
} else {
if (function == PKCS11_FUNCTION_DERIVE)
*tee_type = TEE_TYPE_ECDH_PUBLIC_KEY;
else
*tee_type = TEE_TYPE_ECDSA_PUBLIC_KEY;
}
break;
case PKCS11_CKK_RSA:
if (class == PKCS11_CKO_PRIVATE_KEY)
*tee_type = TEE_TYPE_RSA_KEYPAIR;
else
*tee_type = TEE_TYPE_RSA_PUBLIC_KEY;
break;
case PKCS11_CKK_EC_EDWARDS:
if (class == PKCS11_CKO_PRIVATE_KEY)
*tee_type = TEE_TYPE_ED25519_KEYPAIR;
else
*tee_type = TEE_TYPE_ED25519_PUBLIC_KEY;
break;
default:
TEE_Panic(type);
break;
}
return PKCS11_CKR_OK;
}
static enum pkcs11_rc
allocate_tee_operation(struct pkcs11_session *session,
enum processing_func function,
struct pkcs11_attribute_head *params,
struct pkcs11_object *obj)
{
uint32_t size = (uint32_t)get_object_key_bit_size(obj);
uint32_t algo = 0;
uint32_t hash_algo = 0;
uint32_t mode = 0;
uint32_t hash_mode = 0;
TEE_Result res = TEE_ERROR_GENERIC;
struct active_processing *processing = session->processing;
assert(processing->tee_op_handle == TEE_HANDLE_NULL);
assert(processing->tee_hash_op_handle == TEE_HANDLE_NULL);
if (pkcs2tee_algorithm(&algo, &hash_algo, function, params, obj))
return PKCS11_CKR_FUNCTION_FAILED;
pkcs2tee_mode(&mode, function);
if (hash_algo) {
pkcs2tee_mode(&hash_mode, PKCS11_FUNCTION_DIGEST);
res = TEE_AllocateOperation(&processing->tee_hash_op_handle,
hash_algo, hash_mode, 0);
if (res) {
EMSG("TEE_AllocateOp. failed %#"PRIx32" %#"PRIx32,
hash_algo, hash_mode);
if (res == TEE_ERROR_NOT_SUPPORTED)
return PKCS11_CKR_MECHANISM_INVALID;
return tee2pkcs_error(res);
}
processing->tee_hash_algo = hash_algo;
}
res = TEE_AllocateOperation(&processing->tee_op_handle,
algo, mode, size);
if (res)
EMSG("TEE_AllocateOp. failed %#"PRIx32" %#"PRIx32" %#"PRIx32,
algo, mode, size);
if (res == TEE_ERROR_NOT_SUPPORTED)
return PKCS11_CKR_MECHANISM_INVALID;
if (res != TEE_SUCCESS &&
processing->tee_hash_op_handle != TEE_HANDLE_NULL) {
TEE_FreeOperation(session->processing->tee_hash_op_handle);
processing->tee_hash_op_handle = TEE_HANDLE_NULL;
processing->tee_hash_algo = 0;
}
return tee2pkcs_error(res);
}
static enum pkcs11_rc load_tee_key(struct pkcs11_session *session,
struct pkcs11_object *obj,
enum processing_func function)
{
TEE_Attribute *tee_attrs = NULL;
size_t tee_attrs_count = 0;
size_t object_size = 0;
enum pkcs11_rc rc = PKCS11_CKR_GENERAL_ERROR;
TEE_Result res = TEE_ERROR_GENERIC;
enum pkcs11_class_id __maybe_unused class = get_class(obj->attributes);
enum pkcs11_key_type type = get_key_type(obj->attributes);
assert(class == PKCS11_CKO_PUBLIC_KEY ||
class == PKCS11_CKO_PRIVATE_KEY);
if (obj->key_handle != TEE_HANDLE_NULL) {
switch (type) {
case PKCS11_CKK_RSA:
/* RSA loaded keys can be reused */
assert((obj->key_type == TEE_TYPE_RSA_PUBLIC_KEY &&
class == PKCS11_CKO_PUBLIC_KEY) ||
(obj->key_type == TEE_TYPE_RSA_KEYPAIR &&
class == PKCS11_CKO_PRIVATE_KEY));
goto key_ready;
case PKCS11_CKK_EC:
/* Reuse EC TEE key only if already DSA or DH */
switch (obj->key_type) {
case TEE_TYPE_ECDSA_PUBLIC_KEY:
case TEE_TYPE_ECDSA_KEYPAIR:
if (function != PKCS11_FUNCTION_DERIVE)
goto key_ready;
break;
case TEE_TYPE_ECDH_PUBLIC_KEY:
case TEE_TYPE_ECDH_KEYPAIR:
if (function == PKCS11_FUNCTION_DERIVE)
goto key_ready;
break;
default:
assert(0);
break;
}
break;
default:
assert(0);
break;
}
TEE_CloseObject(obj->key_handle);
obj->key_handle = TEE_HANDLE_NULL;
}
rc = pkcs2tee_key_type(&obj->key_type, obj, function);
if (rc)
return rc;
object_size = get_object_key_bit_size(obj);
if (!object_size)
return PKCS11_CKR_GENERAL_ERROR;
switch (type) {
case PKCS11_CKK_RSA:
rc = load_tee_rsa_key_attrs(&tee_attrs, &tee_attrs_count, obj);
break;
case PKCS11_CKK_EC:
rc = load_tee_ec_key_attrs(&tee_attrs, &tee_attrs_count, obj);
break;
case PKCS11_CKK_EC_EDWARDS:
rc = load_tee_eddsa_key_attrs(&tee_attrs, &tee_attrs_count,
obj);
break;
default:
break;
}
if (rc)
return rc;
res = TEE_AllocateTransientObject(obj->key_type, object_size,
&obj->key_handle);
if (res) {
DMSG("TEE_AllocateTransientObject failed, %#"PRIx32, res);
return tee2pkcs_error(res);
}
res = TEE_PopulateTransientObject(obj->key_handle,
tee_attrs, tee_attrs_count);
TEE_Free(tee_attrs);
if (res) {
DMSG("TEE_PopulateTransientObject failed, %#"PRIx32, res);
goto error;
}
key_ready:
res = TEE_SetOperationKey(session->processing->tee_op_handle,
obj->key_handle);
if (res) {
DMSG("TEE_SetOperationKey failed, %#"PRIx32, res);
goto error;
}
return PKCS11_CKR_OK;
error:
TEE_FreeTransientObject(obj->key_handle);
obj->key_handle = TEE_HANDLE_NULL;
return tee2pkcs_error(res);
}
static enum pkcs11_rc
init_tee_operation(struct pkcs11_session *session,
struct pkcs11_attribute_head *proc_params,
struct pkcs11_object *obj)
{
enum pkcs11_rc rc = PKCS11_CKR_OK;
struct active_processing *proc = session->processing;
switch (proc_params->id) {
case PKCS11_CKM_RSA_PKCS_PSS:
case PKCS11_CKM_SHA1_RSA_PKCS_PSS:
case PKCS11_CKM_SHA224_RSA_PKCS_PSS:
case PKCS11_CKM_SHA256_RSA_PKCS_PSS:
case PKCS11_CKM_SHA384_RSA_PKCS_PSS:
case PKCS11_CKM_SHA512_RSA_PKCS_PSS:
rc = pkcs2tee_proc_params_rsa_pss(proc, proc_params);
if (rc)
break;
rc = pkcs2tee_validate_rsa_pss(proc, obj);
break;
case PKCS11_CKM_RSA_PKCS_OAEP:
rc = pkcs2tee_proc_params_rsa_oaep(proc, proc_params);
break;
case PKCS11_CKM_EDDSA:
rc = pkcs2tee_proc_params_eddsa(proc, proc_params);
break;
case PKCS11_CKM_RSA_AES_KEY_WRAP:
rc = pkcs2tee_proc_params_rsa_aes_wrap(proc, proc_params);
break;
default:
break;
}
return rc;
}
enum pkcs11_rc init_asymm_operation(struct pkcs11_session *session,
enum processing_func function,
struct pkcs11_attribute_head *proc_params,
struct pkcs11_object *obj)
{
enum pkcs11_rc rc = PKCS11_CKR_GENERAL_ERROR;
assert(processing_is_tee_asymm(proc_params->id));
rc = allocate_tee_operation(session, function, proc_params, obj);
if (rc)
return rc;
rc = load_tee_key(session, obj, function);
if (rc)
return rc;
rc = init_tee_operation(session, proc_params, obj);
if (!rc)
session->processing->mecha_type = proc_params->id;
return rc;
}
/*
* step_sym_step - step (update/oneshot/final) on a symmetric crypto operation
*
* @session - current session
* @function - processing function (encrypt, decrypt, sign, ...)
* @step - step ID in the processing (oneshot, update, final)
* @ptypes - invocation parameter types
* @params - invocation parameter references
*/
enum pkcs11_rc step_asymm_operation(struct pkcs11_session *session,
enum processing_func function,
enum processing_step step,
uint32_t ptypes, TEE_Param *params)
{
enum pkcs11_rc rc = PKCS11_CKR_GENERAL_ERROR;
TEE_Result res = TEE_ERROR_GENERIC;
void *in_buf = NULL;
void *in2_buf = NULL;
void *out_buf = NULL;
void *hash_buf = NULL;
uint32_t in_size = 0;
uint32_t in2_size = 0;
size_t out_size = 0;
size_t hash_size = 0;
TEE_Attribute *tee_attrs = NULL;
size_t tee_attrs_count = 0;
bool output_data = false;
struct active_processing *proc = session->processing;
struct rsa_aes_key_wrap_processing_ctx *rsa_aes_ctx = NULL;
struct rsa_oaep_processing_ctx *rsa_oaep_ctx = NULL;
struct rsa_pss_processing_ctx *rsa_pss_ctx = NULL;
struct eddsa_processing_ctx *eddsa_ctx = NULL;
size_t sz = 0;
if (TEE_PARAM_TYPE_GET(ptypes, 1) == TEE_PARAM_TYPE_MEMREF_INPUT) {
in_buf = params[1].memref.buffer;
in_size = params[1].memref.size;
if (in_size && !in_buf)
return PKCS11_CKR_ARGUMENTS_BAD;
}
if (TEE_PARAM_TYPE_GET(ptypes, 2) == TEE_PARAM_TYPE_MEMREF_INPUT) {
in2_buf = params[2].memref.buffer;
in2_size = params[2].memref.size;
if (in2_size && !in2_buf)
return PKCS11_CKR_ARGUMENTS_BAD;
}
if (TEE_PARAM_TYPE_GET(ptypes, 2) == TEE_PARAM_TYPE_MEMREF_OUTPUT) {
out_buf = params[2].memref.buffer;
out_size = params[2].memref.size;
if (out_size && !out_buf)
return PKCS11_CKR_ARGUMENTS_BAD;
}
if (TEE_PARAM_TYPE_GET(ptypes, 3) != TEE_PARAM_TYPE_NONE)
return PKCS11_CKR_ARGUMENTS_BAD;
switch (step) {
case PKCS11_FUNC_STEP_ONESHOT:
case PKCS11_FUNC_STEP_UPDATE:
case PKCS11_FUNC_STEP_FINAL:
break;
default:
return PKCS11_CKR_GENERAL_ERROR;
}
/* TEE attribute(s) required by the operation */
switch (proc->mecha_type) {
case PKCS11_CKM_RSA_PKCS_PSS:
case PKCS11_CKM_SHA1_RSA_PKCS_PSS:
case PKCS11_CKM_SHA224_RSA_PKCS_PSS:
case PKCS11_CKM_SHA256_RSA_PKCS_PSS:
case PKCS11_CKM_SHA384_RSA_PKCS_PSS:
case PKCS11_CKM_SHA512_RSA_PKCS_PSS:
tee_attrs = TEE_Malloc(sizeof(TEE_Attribute),
TEE_USER_MEM_HINT_NO_FILL_ZERO);
if (!tee_attrs) {
rc = PKCS11_CKR_DEVICE_MEMORY;
goto out;
}
rsa_pss_ctx = proc->extra_ctx;
TEE_InitValueAttribute(&tee_attrs[tee_attrs_count],
TEE_ATTR_RSA_PSS_SALT_LENGTH,
rsa_pss_ctx->salt_len, 0);
tee_attrs_count++;
break;
case PKCS11_CKM_EDDSA:
eddsa_ctx = proc->extra_ctx;
tee_attrs = TEE_Malloc(2 * sizeof(TEE_Attribute),
TEE_USER_MEM_HINT_NO_FILL_ZERO);
if (!tee_attrs) {
rc = PKCS11_CKR_DEVICE_MEMORY;
goto out;
}
if (eddsa_ctx->flag) {
TEE_InitValueAttribute(&tee_attrs[tee_attrs_count],
TEE_ATTR_EDDSA_PREHASH, 0, 0);
tee_attrs_count++;
}
if (eddsa_ctx->ctx_len > 0) {
TEE_InitRefAttribute(&tee_attrs[tee_attrs_count],
TEE_ATTR_EDDSA_CTX, eddsa_ctx->ctx,
eddsa_ctx->ctx_len);
tee_attrs_count++;
}
break;
case PKCS11_CKM_RSA_PKCS_OAEP:
rsa_oaep_ctx = proc->extra_ctx;
if (!rsa_oaep_ctx->source_data_len)
break;
tee_attrs = TEE_Malloc(sizeof(TEE_Attribute),
TEE_USER_MEM_HINT_NO_FILL_ZERO);
if (!tee_attrs) {
rc = PKCS11_CKR_DEVICE_MEMORY;
goto out;
}
TEE_InitRefAttribute(&tee_attrs[tee_attrs_count],
TEE_ATTR_RSA_OAEP_LABEL,
rsa_oaep_ctx->source_data,
rsa_oaep_ctx->source_data_len);
tee_attrs_count++;
break;
case PKCS11_CKM_RSA_AES_KEY_WRAP:
rsa_aes_ctx = proc->extra_ctx;
if (!rsa_aes_ctx->source_data_len)
break;
tee_attrs = TEE_Malloc(sizeof(TEE_Attribute),
TEE_USER_MEM_HINT_NO_FILL_ZERO);
if (!tee_attrs) {
rc = PKCS11_CKR_DEVICE_MEMORY;
goto out;
}
TEE_InitRefAttribute(&tee_attrs[tee_attrs_count],
TEE_ATTR_RSA_OAEP_LABEL,
rsa_aes_ctx->source_data,
rsa_aes_ctx->source_data_len);
tee_attrs_count++;
break;
default:
break;
}
/*
* Handle multi stage update step for mechas needing hash
* calculation
*/
if (step == PKCS11_FUNC_STEP_UPDATE) {
switch (proc->mecha_type) {
case PKCS11_CKM_ECDSA_SHA1:
case PKCS11_CKM_ECDSA_SHA224:
case PKCS11_CKM_ECDSA_SHA256:
case PKCS11_CKM_ECDSA_SHA384:
case PKCS11_CKM_ECDSA_SHA512:
case PKCS11_CKM_MD5_RSA_PKCS:
case PKCS11_CKM_SHA1_RSA_PKCS:
case PKCS11_CKM_SHA224_RSA_PKCS:
case PKCS11_CKM_SHA256_RSA_PKCS:
case PKCS11_CKM_SHA384_RSA_PKCS:
case PKCS11_CKM_SHA512_RSA_PKCS:
case PKCS11_CKM_SHA1_RSA_PKCS_PSS:
case PKCS11_CKM_SHA224_RSA_PKCS_PSS:
case PKCS11_CKM_SHA256_RSA_PKCS_PSS:
case PKCS11_CKM_SHA384_RSA_PKCS_PSS:
case PKCS11_CKM_SHA512_RSA_PKCS_PSS:
assert(proc->tee_hash_op_handle != TEE_HANDLE_NULL);
TEE_DigestUpdate(proc->tee_hash_op_handle, in_buf,
in_size);
rc = PKCS11_CKR_OK;
break;
default:
/*
* Other mechanism do not expect multi stage
* operation
*/
rc = PKCS11_CKR_GENERAL_ERROR;
break;
}
goto out;
}
/*
* Handle multi stage one shot and final steps for mechas needing hash
* calculation
*/
switch (proc->mecha_type) {
case PKCS11_CKM_ECDSA_SHA1:
case PKCS11_CKM_ECDSA_SHA224:
case PKCS11_CKM_ECDSA_SHA256:
case PKCS11_CKM_ECDSA_SHA384:
case PKCS11_CKM_ECDSA_SHA512:
case PKCS11_CKM_MD5_RSA_PKCS:
case PKCS11_CKM_SHA1_RSA_PKCS:
case PKCS11_CKM_SHA224_RSA_PKCS:
case PKCS11_CKM_SHA256_RSA_PKCS:
case PKCS11_CKM_SHA384_RSA_PKCS:
case PKCS11_CKM_SHA512_RSA_PKCS:
case PKCS11_CKM_SHA1_RSA_PKCS_PSS:
case PKCS11_CKM_SHA224_RSA_PKCS_PSS:
case PKCS11_CKM_SHA256_RSA_PKCS_PSS:
case PKCS11_CKM_SHA384_RSA_PKCS_PSS:
case PKCS11_CKM_SHA512_RSA_PKCS_PSS:
assert(proc->tee_hash_op_handle != TEE_HANDLE_NULL);
hash_size = TEE_ALG_GET_DIGEST_SIZE(proc->tee_hash_algo);
hash_buf = TEE_Malloc(hash_size, 0);
if (!hash_buf)
return PKCS11_CKR_DEVICE_MEMORY;
res = TEE_DigestDoFinal(proc->tee_hash_op_handle,
in_buf, in_size, hash_buf,
&hash_size);
rc = tee2pkcs_error(res);
if (rc != PKCS11_CKR_OK)
goto out;
break;
default:
break;
}
/*
* Finalize either provided hash or calculated hash with signing
* operation
*/
/* First determine amount of bytes for signing operation */
switch (proc->mecha_type) {
case PKCS11_CKM_ECDSA:
sz = ecdsa_get_input_max_byte_size(proc->tee_op_handle);
if (!in_size || !sz) {
rc = PKCS11_CKR_FUNCTION_FAILED;
goto out;
}
/*
* Note 3) Input the entire raw digest. Internally, this will
* be truncated to the appropriate number of bits.
*/
if (in_size > sz)
in_size = sz;
if (function == PKCS11_FUNCTION_VERIFY && in2_size != 2 * sz) {
rc = PKCS11_CKR_SIGNATURE_LEN_RANGE;
goto out;
}
break;
case PKCS11_CKM_ECDSA_SHA1:
case PKCS11_CKM_ECDSA_SHA224:
case PKCS11_CKM_ECDSA_SHA256:
case PKCS11_CKM_ECDSA_SHA384:
case PKCS11_CKM_ECDSA_SHA512:
/* Get key size in bytes */
sz = ecdsa_get_input_max_byte_size(proc->tee_op_handle);
if (!sz) {
rc = PKCS11_CKR_FUNCTION_FAILED;
goto out;
}
if (function == PKCS11_FUNCTION_VERIFY &&
in2_size != 2 * sz) {
rc = PKCS11_CKR_SIGNATURE_LEN_RANGE;
goto out;
}
break;
case PKCS11_CKM_RSA_PKCS:
case PKCS11_CKM_MD5_RSA_PKCS:
case PKCS11_CKM_SHA1_RSA_PKCS:
case PKCS11_CKM_SHA224_RSA_PKCS:
case PKCS11_CKM_SHA256_RSA_PKCS:
case PKCS11_CKM_SHA384_RSA_PKCS:
case PKCS11_CKM_SHA512_RSA_PKCS:
case PKCS11_CKM_RSA_PKCS_PSS:
case PKCS11_CKM_SHA1_RSA_PKCS_PSS:
case PKCS11_CKM_SHA224_RSA_PKCS_PSS:
case PKCS11_CKM_SHA256_RSA_PKCS_PSS:
case PKCS11_CKM_SHA384_RSA_PKCS_PSS:
case PKCS11_CKM_SHA512_RSA_PKCS_PSS:
/* Get key size in bytes */
sz = rsa_get_input_max_byte_size(proc->tee_op_handle);
if (!sz) {
rc = PKCS11_CKR_FUNCTION_FAILED;
goto out;
}
if (function == PKCS11_FUNCTION_VERIFY && in2_size != sz) {
rc = PKCS11_CKR_SIGNATURE_LEN_RANGE;
goto out;
}
break;
default:
break;
}
/* Next perform actual signing operation */
switch (proc->mecha_type) {
case PKCS11_CKM_ECDSA:
case PKCS11_CKM_EDDSA:
case PKCS11_CKM_RSA_PKCS:
case PKCS11_CKM_RSA_PKCS_OAEP:
case PKCS11_CKM_RSA_PKCS_PSS:
/* For operations using provided input data */
switch (function) {
case PKCS11_FUNCTION_ENCRYPT:
res = TEE_AsymmetricEncrypt(proc->tee_op_handle,
tee_attrs, tee_attrs_count,
in_buf, in_size,
out_buf, &out_size);
output_data = true;
rc = tee2pkcs_error(res);
if (rc == PKCS11_CKR_ARGUMENTS_BAD)
rc = PKCS11_CKR_DATA_LEN_RANGE;
break;
case PKCS11_FUNCTION_DECRYPT:
res = TEE_AsymmetricDecrypt(proc->tee_op_handle,
tee_attrs, tee_attrs_count,
in_buf, in_size,
out_buf, &out_size);
output_data = true;
rc = tee2pkcs_error(res);
if (rc == PKCS11_CKR_ARGUMENTS_BAD)
rc = PKCS11_CKR_ENCRYPTED_DATA_LEN_RANGE;
break;
case PKCS11_FUNCTION_SIGN:
res = TEE_AsymmetricSignDigest(proc->tee_op_handle,
tee_attrs,
tee_attrs_count,
in_buf, in_size,
out_buf, &out_size);
output_data = true;
rc = tee2pkcs_error(res);
break;
case PKCS11_FUNCTION_VERIFY:
res = TEE_AsymmetricVerifyDigest(proc->tee_op_handle,
tee_attrs,
tee_attrs_count,
in_buf, in_size,
in2_buf, in2_size);
rc = tee2pkcs_error(res);
break;
default:
TEE_Panic(function);
break;
}
break;
case PKCS11_CKM_ECDSA_SHA1:
case PKCS11_CKM_ECDSA_SHA224:
case PKCS11_CKM_ECDSA_SHA256:
case PKCS11_CKM_ECDSA_SHA384:
case PKCS11_CKM_ECDSA_SHA512:
case PKCS11_CKM_MD5_RSA_PKCS:
case PKCS11_CKM_SHA1_RSA_PKCS:
case PKCS11_CKM_SHA224_RSA_PKCS:
case PKCS11_CKM_SHA256_RSA_PKCS:
case PKCS11_CKM_SHA384_RSA_PKCS:
case PKCS11_CKM_SHA512_RSA_PKCS:
case PKCS11_CKM_SHA1_RSA_PKCS_PSS:
case PKCS11_CKM_SHA224_RSA_PKCS_PSS:
case PKCS11_CKM_SHA256_RSA_PKCS_PSS:
case PKCS11_CKM_SHA384_RSA_PKCS_PSS:
case PKCS11_CKM_SHA512_RSA_PKCS_PSS:
/* For operations having hash operation use calculated hash */
switch (function) {
case PKCS11_FUNCTION_SIGN:
res = TEE_AsymmetricSignDigest(proc->tee_op_handle,
tee_attrs,
tee_attrs_count,
hash_buf, hash_size,
out_buf, &out_size);
output_data = true;
rc = tee2pkcs_error(res);
break;
case PKCS11_FUNCTION_VERIFY:
res = TEE_AsymmetricVerifyDigest(proc->tee_op_handle,
tee_attrs,
tee_attrs_count,
hash_buf, hash_size,
in2_buf, in2_size);
rc = tee2pkcs_error(res);
break;
default:
TEE_Panic(function);
break;
}
break;
default:
TEE_Panic(proc->mecha_type);
break;
}
out:
if (output_data &&
(rc == PKCS11_CKR_OK || rc == PKCS11_CKR_BUFFER_TOO_SMALL)) {
switch (TEE_PARAM_TYPE_GET(ptypes, 2)) {
case TEE_PARAM_TYPE_MEMREF_OUTPUT:
case TEE_PARAM_TYPE_MEMREF_INOUT:
params[2].memref.size = out_size;
break;
default:
rc = PKCS11_CKR_GENERAL_ERROR;
break;
}
}
TEE_Free(hash_buf);
TEE_Free(tee_attrs);
return rc;
}
enum pkcs11_rc do_asymm_derivation(struct pkcs11_session *session,
struct pkcs11_attribute_head *proc_params,
struct obj_attrs **head)
{
enum pkcs11_rc rc = PKCS11_CKR_GENERAL_ERROR;
TEE_ObjectHandle out_handle = TEE_HANDLE_NULL;
TEE_Result res = TEE_ERROR_GENERIC;
TEE_Attribute tee_attrs[2] = { };
size_t tee_attrs_count = 0;
uint32_t key_byte_size = 0;
uint32_t key_bit_size = 0;
void *a_ptr = NULL;
size_t a_size = 0;
/* Remove default attribute set at template sanitization */
if (remove_empty_attribute(head, PKCS11_CKA_VALUE))
return PKCS11_CKR_FUNCTION_FAILED;
rc = get_u32_attribute(*head, PKCS11_CKA_VALUE_LEN, &key_bit_size);
if (rc)
return rc;
key_bit_size *= 8;
key_byte_size = (key_bit_size + 7) / 8;
res = TEE_AllocateTransientObject(TEE_TYPE_GENERIC_SECRET,
key_byte_size * 8, &out_handle);
if (res) {
DMSG("TEE_AllocateTransientObject failed, %#"PRIx32, res);
return tee2pkcs_error(res);
}
switch (proc_params->id) {
case PKCS11_CKM_ECDH1_DERIVE:
rc = pkcs2tee_param_ecdh(proc_params, &a_ptr, &a_size);
if (rc)
goto out;
TEE_InitRefAttribute(&tee_attrs[tee_attrs_count],
TEE_ATTR_ECC_PUBLIC_VALUE_X,
a_ptr, a_size / 2);
tee_attrs_count++;
TEE_InitRefAttribute(&tee_attrs[tee_attrs_count],
TEE_ATTR_ECC_PUBLIC_VALUE_Y,
(char *)a_ptr + a_size / 2,
a_size / 2);
tee_attrs_count++;
break;
default:
TEE_Panic(proc_params->id);
break;
}
TEE_DeriveKey(session->processing->tee_op_handle, &tee_attrs[0],
tee_attrs_count, out_handle);
rc = alloc_get_tee_attribute_data(out_handle, TEE_ATTR_SECRET_VALUE,
&a_ptr, &a_size);
if (rc)
goto out;
if (a_size * 8 < key_bit_size)
rc = PKCS11_CKR_KEY_SIZE_RANGE;
else
rc = add_attribute(head, PKCS11_CKA_VALUE, a_ptr,
key_byte_size);
TEE_Free(a_ptr);
out:
release_active_processing(session);
TEE_FreeTransientObject(out_handle);
return rc;
}
static enum pkcs11_rc wrap_rsa_aes_key(struct active_processing *proc,
void *data, uint32_t data_sz,
void *out_buf, uint32_t *out_sz)
{
enum pkcs11_rc rc = PKCS11_CKR_OK;
TEE_Result res = TEE_ERROR_GENERIC;
int mbedtls_rc = 0;
struct rsa_aes_key_wrap_processing_ctx *ctx = proc->extra_ctx;
mbedtls_nist_kw_context kw_ctx = { };
uint8_t aes_key_value[32] = { };
uint32_t aes_key_size = ctx->aes_key_bits / 8;
size_t aes_wrapped_size = *out_sz;
uint32_t expected_size = 0;
size_t target_key_size = 0;
const size_t kw_semiblock_len = 8;
if (ctx->aes_key_bits != 128 &&
ctx->aes_key_bits != 192 &&
ctx->aes_key_bits != 256)
return PKCS11_CKR_ARGUMENTS_BAD;
mbedtls_nist_kw_init(&kw_ctx);
TEE_GenerateRandom(aes_key_value, aes_key_size);
res = TEE_AsymmetricEncrypt(proc->tee_op_handle,
NULL, 0,
aes_key_value, aes_key_size,
out_buf, &aes_wrapped_size);
expected_size = aes_wrapped_size + data_sz + kw_semiblock_len;
if (res) {
if (res == TEE_ERROR_SHORT_BUFFER)
*out_sz = expected_size;
rc = tee2pkcs_error(res);
goto out;
}
if (*out_sz < expected_size) {
rc = PKCS11_CKR_BUFFER_TOO_SMALL;
*out_sz = expected_size;
goto out;
}
mbedtls_rc = mbedtls_nist_kw_setkey(&kw_ctx, MBEDTLS_CIPHER_ID_AES,
aes_key_value, ctx->aes_key_bits,
true);
if (mbedtls_rc) {
if (mbedtls_rc == MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA)
rc = PKCS11_CKR_KEY_SIZE_RANGE;
else
rc = PKCS11_CKR_FUNCTION_FAILED;
goto out;
}
mbedtls_rc = mbedtls_nist_kw_wrap(&kw_ctx, MBEDTLS_KW_MODE_KWP,
data, data_sz,
(uint8_t *)out_buf + aes_wrapped_size,
&target_key_size,
*out_sz - aes_wrapped_size);
if (mbedtls_rc) {