-
Notifications
You must be signed in to change notification settings - Fork 708
/
card-epass2003.c
2388 lines (1970 loc) · 60.5 KB
/
card-epass2003.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
/*
* Support for ePass2003 smart cards
*
* Copyright (C) 2008, Weitao Sun <weitao@ftsafe.com>
* Copyright (C) 2011, Xiaoshuo Wu <xiaoshuo@ftsafe.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#ifdef ENABLE_SM /* empty file without SM enabled */
#ifdef ENABLE_OPENSSL /* empty file without openssl */
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/evp.h>
#include <openssl/sha.h>
#include "internal.h"
#include "asn1.h"
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/evp.h>
#include <openssl/sha.h>
#include "internal.h"
#include "asn1.h"
#include "cardctl.h"
static struct sc_atr_table epass2003_atrs[] = {
/* This is a FIPS certified card using SCP01 security messaging. */
{"3B:9F:95:81:31:FE:9F:00:66:46:53:05:10:00:11:71:df:00:00:00:6a:82:5e",
"FF:FF:FF:FF:FF:00:FF:FF:FF:FF:FF:FF:00:00:00:ff:00:ff:ff:00:00:00:00",
"FTCOS/ePass2003", SC_CARD_TYPE_ENTERSAFE_FTCOS_EPASS2003, 0, NULL },
{NULL, NULL, NULL, 0, 0, NULL}
};
static struct sc_card_operations *iso_ops = NULL;
static struct sc_card_operations epass2003_ops;
static struct sc_card_driver epass2003_drv = {
"epass2003",
"epass2003",
&epass2003_ops,
NULL, 0, NULL
};
#define KEY_TYPE_AES 0x01 /* FIPS mode */
#define KEY_TYPE_DES 0x02 /* Non-FIPS mode */
static unsigned char g_smtype; /* sm cryption algorithm type */
#define KEY_LEN_AES 16
#define KEY_LEN_DES 8
#define KEY_LEN_DES3 24
#define HASH_LEN 24
static unsigned char PIN_ID[2] = { ENTERSAFE_USER_PIN_ID, ENTERSAFE_SO_PIN_ID };
/*0x00:plain; 0x01:scp01 sm*/
#define SM_PLAIN 0x00
#define SM_SCP01 0x01
static unsigned char g_sm; /* if perform sm or not */
static unsigned char g_init_key_enc[16] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
0x0D, 0x0E, 0x0F, 0x10
};
static unsigned char g_init_key_mac[16] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
0x0D, 0x0E, 0x0F, 0x10
};
static unsigned char g_random[8] = {
0xBF, 0xC3, 0x29, 0x11, 0xC7, 0x18, 0xC3, 0x40
};
static unsigned char g_sk_enc[16] = { 0 }; /* encrypt session key */
static unsigned char g_sk_mac[16] = { 0 }; /* mac session key */
static unsigned char g_icv_mac[16] = { 0 }; /* instruction counter vector(for sm) */
#define REVERSE_ORDER4(x) ( \
((unsigned long)x & 0xFF000000)>> 24 | \
((unsigned long)x & 0x00FF0000)>> 8 | \
((unsigned long)x & 0x0000FF00)<< 8 | \
((unsigned long)x & 0x000000FF)<< 24)
static int epass2003_transmit_apdu(struct sc_card *card, struct sc_apdu *apdu);
static int epass2003_select_file(struct sc_card *card, const sc_path_t * in_path, sc_file_t ** file_out);
static int
openssl_enc(const EVP_CIPHER * cipher, const unsigned char *key, const unsigned char *iv,
const unsigned char *input, size_t length, unsigned char *output)
{
int r = SC_ERROR_INTERNAL;
EVP_CIPHER_CTX ctx;
int outl = 0;
int outl_tmp = 0;
unsigned char iv_tmp[EVP_MAX_IV_LENGTH] = { 0 };
memcpy(iv_tmp, iv, EVP_MAX_IV_LENGTH);
EVP_CIPHER_CTX_init(&ctx);
EVP_EncryptInit_ex(&ctx, cipher, NULL, key, iv_tmp);
EVP_CIPHER_CTX_set_padding(&ctx, 0);
if (!EVP_EncryptUpdate(&ctx, output, &outl, input, length))
goto out;
if (!EVP_EncryptFinal_ex(&ctx, output + outl, &outl_tmp))
goto out;
if (!EVP_CIPHER_CTX_cleanup(&ctx))
goto out;
r = SC_SUCCESS;
out:
return r;
}
static int
openssl_dec(const EVP_CIPHER * cipher, const unsigned char *key, const unsigned char *iv,
const unsigned char *input, size_t length, unsigned char *output)
{
int r = SC_ERROR_INTERNAL;
EVP_CIPHER_CTX ctx;
int outl = 0;
int outl_tmp = 0;
unsigned char iv_tmp[EVP_MAX_IV_LENGTH] = { 0 };
memcpy(iv_tmp, iv, EVP_MAX_IV_LENGTH);
EVP_CIPHER_CTX_init(&ctx);
EVP_DecryptInit_ex(&ctx, cipher, NULL, key, iv_tmp);
EVP_CIPHER_CTX_set_padding(&ctx, 0);
if (!EVP_DecryptUpdate(&ctx, output, &outl, input, length))
goto out;
if (!EVP_DecryptFinal_ex(&ctx, output + outl, &outl_tmp))
goto out;
if (!EVP_CIPHER_CTX_cleanup(&ctx))
goto out;
r = SC_SUCCESS;
out:
return r;
}
static int
aes128_encrypt_ecb(const unsigned char *key, int keysize,
const unsigned char *input, size_t length, unsigned char *output)
{
unsigned char iv[EVP_MAX_IV_LENGTH] = { 0 };
return openssl_enc(EVP_aes_128_ecb(), key, iv, input, length, output);
}
static int
aes128_encrypt_cbc(const unsigned char *key, int keysize, unsigned char iv[16],
const unsigned char *input, size_t length, unsigned char *output)
{
return openssl_enc(EVP_aes_128_cbc(), key, iv, input, length, output);
}
static int
aes128_decrypt_cbc(const unsigned char *key, int keysize, unsigned char iv[16],
const unsigned char *input, size_t length, unsigned char *output)
{
return openssl_dec(EVP_aes_128_cbc(), key, iv, input, length, output);
}
static int
des3_encrypt_ecb(const unsigned char *key, int keysize,
const unsigned char *input, int length, unsigned char *output)
{
unsigned char iv[EVP_MAX_IV_LENGTH] = { 0 };
unsigned char bKey[24] = { 0 };
if (keysize == 16) {
memcpy(&bKey[0], key, 16);
memcpy(&bKey[16], key, 8);
}
else {
memcpy(&bKey[0], key, 24);
}
return openssl_enc(EVP_des_ede3(), bKey, iv, input, length, output);
}
static int
des3_encrypt_cbc(const unsigned char *key, int keysize, unsigned char iv[8],
const unsigned char *input, size_t length, unsigned char *output)
{
unsigned char bKey[24] = { 0 };
if (keysize == 16) {
memcpy(&bKey[0], key, 16);
memcpy(&bKey[16], key, 8);
}
else {
memcpy(&bKey[0], key, 24);
}
return openssl_enc(EVP_des_ede3_cbc(), bKey, iv, input, length, output);
}
static int
des3_decrypt_cbc(const unsigned char *key, int keysize, unsigned char iv[8],
const unsigned char *input, size_t length, unsigned char *output)
{
unsigned char bKey[24] = { 0 };
if (keysize == 16) {
memcpy(&bKey[0], key, 16);
memcpy(&bKey[16], key, 8);
}
else {
memcpy(&bKey[0], key, 24);
}
return openssl_dec(EVP_des_ede3_cbc(), bKey, iv, input, length, output);
}
static int
des_encrypt_cbc(const unsigned char *key, int keysize, unsigned char iv[8],
const unsigned char *input, size_t length, unsigned char *output)
{
return openssl_enc(EVP_des_cbc(), key, iv, input, length, output);
}
static int
des_decrypt_cbc(const unsigned char *key, int keysize, unsigned char iv[8],
const unsigned char *input, size_t length, unsigned char *output)
{
return openssl_dec(EVP_des_cbc(), key, iv, input, length, output);
}
static int
openssl_dig(const EVP_MD * digest, const unsigned char *input, size_t length,
unsigned char *output)
{
EVP_MD_CTX ctx;
unsigned outl = 0;
EVP_MD_CTX_init(&ctx);
EVP_DigestInit_ex(&ctx, digest, NULL);
if (!EVP_DigestUpdate(&ctx, input, length))
return SC_ERROR_INTERNAL;
if (!EVP_DigestFinal_ex(&ctx, output, &outl))
return SC_ERROR_INTERNAL;
if (!EVP_MD_CTX_cleanup(&ctx))
return SC_ERROR_INTERNAL;
return SC_SUCCESS;
}
static int
sha1_digest(const unsigned char *input, size_t length, unsigned char *output)
{
return openssl_dig(EVP_sha1(), input, length, output);
}
static int
gen_init_key(struct sc_card *card, unsigned char *key_enc, unsigned char *key_mac,
unsigned char *result, unsigned char key_type)
{
int r;
struct sc_apdu apdu;
unsigned char data[256] = { 0 };
unsigned char tmp_sm;
unsigned long blocksize = 0;
unsigned char cryptogram[256] = { 0 }; /* host cryptogram */
unsigned char iv[16] = { 0 };
LOG_FUNC_CALLED(card->ctx);
sc_format_apdu(card, &apdu, SC_APDU_CASE_4_SHORT, 0x50, 0x00, 0x00);
apdu.cla = 0x80;
apdu.lc = apdu.datalen = sizeof(g_random);
apdu.data = g_random; /* host random */
apdu.le = apdu.resplen = 28;
apdu.resp = result; /* card random is result[12~19] */
tmp_sm = g_sm;
g_sm = SM_PLAIN;
r = epass2003_transmit_apdu(card, &apdu);
g_sm = tmp_sm;
LOG_TEST_RET(card->ctx, r, "APDU gen_init_key failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "gen_init_key failed");
/* Step 1 - Generate Derivation data */
memcpy(data, &result[16], 4);
memcpy(&data[4], g_random, 4);
memcpy(&data[8], &result[12], 4);
memcpy(&data[12], &g_random[4], 4);
/* Step 2,3 - Create S-ENC/S-MAC Session Key */
if (KEY_TYPE_AES == key_type) {
aes128_encrypt_ecb(key_enc, 16, data, 16, g_sk_enc);
aes128_encrypt_ecb(key_mac, 16, data, 16, g_sk_mac);
}
else {
des3_encrypt_ecb(key_enc, 16, data, 16, g_sk_enc);
des3_encrypt_ecb(key_mac, 16, data, 16, g_sk_mac);
}
memcpy(data, g_random, 8);
memcpy(&data[8], &result[12], 8);
data[16] = 0x80;
blocksize = (key_type == KEY_TYPE_AES ? 16 : 8);
memset(&data[17], 0x00, blocksize - 1);
/* calculate host cryptogram */
if (KEY_TYPE_AES == key_type)
aes128_encrypt_cbc(g_sk_enc, 16, iv, data, 16 + blocksize, cryptogram);
else
des3_encrypt_cbc(g_sk_enc, 16, iv, data, 16 + blocksize, cryptogram);
/* verify card cryptogram */
if (0 != memcmp(&cryptogram[16], &result[20], 8))
LOG_FUNC_RETURN(card->ctx, SC_ERROR_CARD_CMD_FAILED);
LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}
static int
verify_init_key(struct sc_card *card, unsigned char *ran_key, unsigned char key_type)
{
int r;
struct sc_apdu apdu;
unsigned long blocksize = (key_type == KEY_TYPE_AES ? 16 : 8);
unsigned char data[256] = { 0 };
unsigned char cryptogram[256] = { 0 }; /* host cryptogram */
unsigned char iv[16] = { 0 };
unsigned char mac[256] = { 0 };
unsigned long i;
unsigned char tmp_sm;
LOG_FUNC_CALLED(card->ctx);
memcpy(data, ran_key, 8);
memcpy(&data[8], g_random, 8);
data[16] = 0x80;
memset(&data[17], 0x00, blocksize - 1);
memset(iv, 0, 16);
/* calculate host cryptogram */
if (KEY_TYPE_AES == key_type) {
aes128_encrypt_cbc(g_sk_enc, 16, iv, data, 16 + blocksize,
cryptogram);
} else {
des3_encrypt_cbc(g_sk_enc, 16, iv, data, 16 + blocksize,
cryptogram);
}
memset(data, 0, sizeof(data));
memcpy(data, "\x84\x82\x03\x00\x10", 5);
memcpy(&data[5], &cryptogram[16], 8);
memcpy(&data[13], "\x80\x00\x00", 3);
/* calculate mac icv */
memset(iv, 0x00, 16);
if (KEY_TYPE_AES == key_type) {
aes128_encrypt_cbc(g_sk_mac, 16, iv, data, 16, mac);
i = 0;
} else {
des3_encrypt_cbc(g_sk_mac, 16, iv, data, 16, mac);
i = 8;
}
/* save mac icv */
memset(g_icv_mac, 0x00, 16);
memcpy(g_icv_mac, &mac[i], 8);
/* verify host cryptogram */
memcpy(data, &cryptogram[16], 8);
memcpy(&data[8], &mac[i], 8);
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0x82, 0x03, 0x00);
apdu.cla = 0x84;
apdu.lc = apdu.datalen = 16;
apdu.data = data;
tmp_sm = g_sm;
g_sm = SM_PLAIN;
r = epass2003_transmit_apdu(card, &apdu);
g_sm = tmp_sm;
LOG_TEST_RET(card->ctx, r,
"APDU verify_init_key failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r,
"verify_init_key failed");
return r;
}
static int
mutual_auth(struct sc_card *card, unsigned char *key_enc,
unsigned char *key_mac)
{
struct sc_context *ctx = card->ctx;
int r;
unsigned char result[256] = { 0 };
unsigned char ran_key[8] = { 0 };
LOG_FUNC_CALLED(ctx);
r = gen_init_key(card, key_enc, key_mac, result, g_smtype);
LOG_TEST_RET(ctx, r, "gen_init_key failed");
memcpy(ran_key, &result[12], 8);
r = verify_init_key(card, ran_key, g_smtype);
LOG_TEST_RET(ctx, r, "verify_init_key failed");
LOG_FUNC_RETURN(ctx, r);
}
int
epass2003_refresh(struct sc_card *card)
{
int r = SC_SUCCESS;
if (g_sm) {
r = mutual_auth(card, g_init_key_enc, g_init_key_mac);
LOG_TEST_RET(card->ctx, r, "mutual_auth failed");
}
return r;
}
/* Data(TLV)=0x87|L|0x01+Cipher */
static int
construct_data_tlv(struct sc_apdu *apdu, unsigned char *apdu_buf,
unsigned char *data_tlv, size_t * data_tlv_len, const unsigned char key_type)
{
size_t block_size = (KEY_TYPE_AES == key_type ? 16 : 8);
unsigned char pad[4096] = { 0 };
size_t pad_len;
size_t tlv_more; /* increased tlv length */
unsigned char iv[16] = { 0 };
/* padding */
apdu_buf[block_size] = 0x87;
memcpy(pad, apdu->data, apdu->lc);
pad[apdu->lc] = 0x80;
if ((apdu->lc + 1) % block_size)
pad_len = ((apdu->lc + 1) / block_size + 1) * block_size;
else
pad_len = apdu->lc + 1;
/* encode Lc' */
if (pad_len > 0x7E) {
/* Lc' > 0x7E, use extended APDU */
apdu_buf[block_size + 1] = 0x82;
apdu_buf[block_size + 2] = (unsigned char)((pad_len + 1) / 0x100);
apdu_buf[block_size + 3] = (unsigned char)((pad_len + 1) % 0x100);
apdu_buf[block_size + 4] = 0x01;
tlv_more = 5;
}
else {
apdu_buf[block_size + 1] = (unsigned char)pad_len + 1;
apdu_buf[block_size + 2] = 0x01;
tlv_more = 3;
}
memcpy(data_tlv, &apdu_buf[block_size], tlv_more);
/* encrypt Data */
if (KEY_TYPE_AES == key_type)
aes128_encrypt_cbc(g_sk_enc, 16, iv, pad, pad_len, apdu_buf + block_size + tlv_more);
else
des3_encrypt_cbc(g_sk_enc, 16, iv, pad, pad_len, apdu_buf + block_size + tlv_more);
memcpy(data_tlv + tlv_more, apdu_buf + block_size + tlv_more, pad_len);
*data_tlv_len = tlv_more + pad_len;
return 0;
}
/* Le(TLV)=0x97|L|Le */
static int
construct_le_tlv(struct sc_apdu *apdu, unsigned char *apdu_buf, size_t data_tlv_len,
unsigned char *le_tlv, size_t * le_tlv_len, const unsigned char key_type)
{
size_t block_size = (KEY_TYPE_AES == key_type ? 16 : 8);
*(apdu_buf + block_size + data_tlv_len) = 0x97;
if (apdu->le > 0x7F) {
/* Le' > 0x7E, use extended APDU */
*(apdu_buf + block_size + data_tlv_len + 1) = 2;
*(apdu_buf + block_size + data_tlv_len + 2) = (unsigned char)(apdu->le / 0x100);
*(apdu_buf + block_size + data_tlv_len + 3) = (unsigned char)(apdu->le % 0x100);
memcpy(le_tlv, apdu_buf + block_size + data_tlv_len, 4);
*le_tlv_len = 4;
}
else {
*(apdu_buf + block_size + data_tlv_len + 1) = 1;
*(apdu_buf + block_size + data_tlv_len + 2) = (unsigned char)apdu->le;
memcpy(le_tlv, apdu_buf + block_size + data_tlv_len, 3);
*le_tlv_len = 3;
}
return 0;
}
/* MAC(TLV)=0x8e|0x08|MAC */
static int
construct_mac_tlv(unsigned char *apdu_buf, size_t data_tlv_len, size_t le_tlv_len,
unsigned char *mac_tlv, size_t * mac_tlv_len, const unsigned char key_type)
{
size_t block_size = (KEY_TYPE_AES == key_type ? 16 : 8);
unsigned char mac[4096] = { 0 };
size_t mac_len;
unsigned char icv[16] = { 0 };
int i = (KEY_TYPE_AES == key_type ? 15 : 7);
if (0 == data_tlv_len && 0 == le_tlv_len) {
mac_len = block_size;
}
else {
/* padding */
*(apdu_buf + block_size + data_tlv_len + le_tlv_len) = 0x80;
if ((data_tlv_len + le_tlv_len + 1) % block_size)
mac_len = (((data_tlv_len + le_tlv_len + 1) / block_size) +
1) * block_size + block_size;
else
mac_len = data_tlv_len + le_tlv_len + 1 + block_size;
memset((apdu_buf + block_size + data_tlv_len + le_tlv_len + 1),
0, (mac_len - (data_tlv_len + le_tlv_len + 1)));
}
/* increase icv */
for (; i >= 0; i--) {
if (g_icv_mac[i] == 0xff) {
g_icv_mac[i] = 0;
}
else {
g_icv_mac[i]++;
break;
}
}
/* calculate MAC */
memset(icv, 0, sizeof(icv));
memcpy(icv, g_icv_mac, 16);
if (KEY_TYPE_AES == key_type) {
aes128_encrypt_cbc(g_sk_mac, 16, icv, apdu_buf, mac_len, mac);
memcpy(mac_tlv + 2, &mac[mac_len - 16], 8);
}
else {
unsigned char iv[8] = { 0 };
unsigned char tmp[8] = { 0 };
des_encrypt_cbc(g_sk_mac, 8, icv, apdu_buf, mac_len, mac);
des_decrypt_cbc(&g_sk_mac[8], 8, iv, &mac[mac_len - 8], 8, tmp);
memset(iv, 0x00, 8);
des_encrypt_cbc(g_sk_mac, 8, iv, tmp, 8, mac_tlv + 2);
}
*mac_tlv_len = 2 + 8;
return 0;
}
#if 0
static size_t calc_le(size_t le)
{
size_t le_new = 0;
size_t resp_len = 0;
size_t sw_len = 4; /* T 1 L 1 V 2 */
size_t mac_len = 10; /* T 1 L 1 V 8 */
size_t mod = 16;
/* padding first */
resp_len = 1 + ((le + (mod - 1)) / mod) * mod;
if (0x7f < resp_len) {
resp_len += 0;
} else if (0x7f <= resp_len && resp_len < 0xff) {
resp_len += 1;
} else if (0xff <= resp_len) {
resp_len += 2;
}
resp_len += 2; /* +T+L */
le_new = resp_len + sw_len + mac_len;
return le_new;
}
#endif
/* According to GlobalPlatform Card Specification's SCP01
* encode APDU from
* CLA INS P1 P2 [Lc] Data [Le]
* to
* CLA INS P1 P2 Lc' Data' [Le]
* where
* Data'=Data(TLV)+Le(TLV)+MAC(TLV) */
static int
encode_apdu(struct sc_apdu *plain, struct sc_apdu *sm,
unsigned char *apdu_buf, size_t * apdu_buf_len)
{
size_t block_size = (KEY_TYPE_DES == g_smtype ? 16 : 8);
unsigned char dataTLV[4096] = { 0 };
size_t data_tlv_len = 0;
unsigned char le_tlv[256] = { 0 };
size_t le_tlv_len = 0;
size_t mac_tlv_len = 10;
size_t tmp_lc = 0;
size_t tmp_le = 0;
unsigned char mac_tlv[256] = { 0 };
mac_tlv[0] = 0x8E;
mac_tlv[1] = 8;
/* size_t plain_le = 0; */
sm->cse = SC_APDU_CASE_4_SHORT;
apdu_buf[0] = (unsigned char)plain->cla;
apdu_buf[1] = (unsigned char)plain->ins;
apdu_buf[2] = (unsigned char)plain->p1;
apdu_buf[3] = (unsigned char)plain->p2;
/* plain_le = plain->le; */
/* padding */
apdu_buf[4] = 0x80;
memset(&apdu_buf[5], 0x00, block_size - 5);
/* Data -> Data' */
if (plain->lc != 0)
if (0 != construct_data_tlv(plain, apdu_buf, dataTLV, &data_tlv_len, g_smtype))
return -1;
if (plain->le != 0 || (plain->le == 0 && plain->resplen != 0))
if (0 != construct_le_tlv(plain, apdu_buf, data_tlv_len, le_tlv,
&le_tlv_len, g_smtype))
return -1;
if (0 != construct_mac_tlv(apdu_buf, data_tlv_len, le_tlv_len, mac_tlv, &mac_tlv_len, g_smtype))
return -1;
memset(apdu_buf + 4, 0, *apdu_buf_len - 4);
sm->lc = sm->datalen = data_tlv_len + le_tlv_len + mac_tlv_len;
if (sm->lc > 0xFF) {
sm->cse = SC_APDU_CASE_4_EXT;
apdu_buf[4] = (unsigned char)((sm->lc) / 0x10000);
apdu_buf[5] = (unsigned char)(((sm->lc) / 0x100) % 0x100);
apdu_buf[6] = (unsigned char)((sm->lc) % 0x100);
tmp_lc = 3;
}
else {
apdu_buf[4] = (unsigned char)sm->lc;
tmp_lc = 1;
}
memcpy(apdu_buf + 4 + tmp_lc, dataTLV, data_tlv_len);
memcpy(apdu_buf + 4 + tmp_lc + data_tlv_len, le_tlv, le_tlv_len);
memcpy(apdu_buf + 4 + tmp_lc + data_tlv_len + le_tlv_len, mac_tlv, mac_tlv_len);
memcpy((unsigned char *)sm->data, apdu_buf + 4 + tmp_lc, sm->datalen);
*apdu_buf_len = 0;
if (4 == le_tlv_len) {
sm->cse = SC_APDU_CASE_4_EXT;
*(apdu_buf + 4 + tmp_lc + sm->lc) = (unsigned char)(plain->le / 0x100);
*(apdu_buf + 4 + tmp_lc + sm->lc + 1) = (unsigned char)(plain->le % 0x100);
tmp_le = 2;
}
else if (3 == le_tlv_len) {
*(apdu_buf + 4 + tmp_lc + sm->lc) = (unsigned char)plain->le;
tmp_le = 1;
}
*apdu_buf_len += 4 + tmp_lc + data_tlv_len + le_tlv_len + mac_tlv_len + tmp_le;
/* sm->le = calc_le(plain_le); */
return 0;
}
static int
epass2003_sm_wrap_apdu(struct sc_card *card, struct sc_apdu *plain, struct sc_apdu *sm)
{
unsigned char buf[4096] = { 0 }; /* APDU buffer */
size_t buf_len = sizeof(buf);
LOG_FUNC_CALLED(card->ctx);
if (g_sm)
plain->cla |= 0x0C;
sm->cse = plain->cse;
sm->cla = plain->cla;
sm->ins = plain->ins;
sm->p1 = plain->p1;
sm->p2 = plain->p2;
sm->lc = plain->lc;
sm->le = plain->le;
sm->control = plain->control;
sm->flags = plain->flags;
switch (sm->cla & 0x0C) {
case 0x00:
case 0x04:
sm->datalen = plain->datalen;
sm->data = plain->data;
sm->resplen = plain->resplen;
sm->resp = plain->resp;
break;
case 0x0C:
memset(buf, 0, sizeof(buf));
if (0 != encode_apdu(plain, sm, buf, &buf_len))
return SC_ERROR_CARD_CMD_FAILED;
break;
default:
return SC_ERROR_INCORRECT_PARAMETERS;
}
return SC_SUCCESS;
}
/* According to GlobalPlatform Card Specification's SCP01
* decrypt APDU response from
* ResponseData' SW1 SW2
* to
* ResponseData SW1 SW2
* where
* ResponseData'=Data(TLV)+SW12(TLV)+MAC(TLV)
* where
* Data(TLV)=0x87|L|Cipher
* SW12(TLV)=0x99|0x02|SW1+SW2
* MAC(TLV)=0x8e|0x08|MAC */
static int
decrypt_response(unsigned char *in, unsigned char *out, size_t * out_len)
{
size_t in_len;
size_t i;
unsigned char iv[16] = { 0 };
unsigned char plaintext[4096] = { 0 };
/* no cipher */
if (in[0] == 0x99)
return 0;
/* parse cipher length */
if (0x01 == in[2] && 0x82 != in[1]) {
in_len = in[1];
i = 3;
}
else if (0x01 == in[3] && 0x81 == in[1]) {
in_len = in[2];
i = 4;
}
else if (0x01 == in[4] && 0x82 == in[1]) {
in_len = in[2] * 0x100;
in_len += in[3];
i = 5;
}
else {
return -1;
}
/* decrypt */
if (KEY_TYPE_AES == g_smtype)
aes128_decrypt_cbc(g_sk_enc, 16, iv, &in[i], in_len - 1, plaintext);
else
des3_decrypt_cbc(g_sk_enc, 16, iv, &in[i], in_len - 1, plaintext);
/* unpadding */
while (0x80 != plaintext[in_len - 2] && (in_len - 2 > 0))
in_len--;
if (2 == in_len)
return -1;
memcpy(out, plaintext, in_len - 2);
*out_len = in_len - 2;
return 0;
}
static int
epass2003_sm_unwrap_apdu(struct sc_card *card, struct sc_apdu *sm, struct sc_apdu *plain)
{
int r;
size_t len = 0;
LOG_FUNC_CALLED(card->ctx);
r = sc_check_sw(card, sm->sw1, sm->sw2);
if (r == SC_SUCCESS) {
if (g_sm) {
if (0 != decrypt_response(sm->resp, plain->resp, &len))
return SC_ERROR_CARD_CMD_FAILED;
}
else {
memcpy(plain->resp, sm->resp, sm->resplen);
len = sm->resplen;
}
}
plain->resplen = len;
plain->sw1 = sm->sw1;
plain->sw2 = sm->sw2;
sc_log(card->ctx, "unwrapped APDU: resplen %i, SW %02X%02X", plain->resplen, plain->sw1, plain->sw2);
LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}
static int
epass2003_sm_free_wrapped_apdu(struct sc_card *card,
struct sc_apdu *plain, struct sc_apdu **sm_apdu)
{
struct sc_context *ctx = card->ctx;
int rv = SC_SUCCESS;
LOG_FUNC_CALLED(ctx);
if (!sm_apdu)
LOG_FUNC_RETURN(ctx, SC_ERROR_INVALID_ARGUMENTS);
if (!(*sm_apdu))
LOG_FUNC_RETURN(ctx, SC_SUCCESS);
if (plain)
rv = epass2003_sm_unwrap_apdu(card, *sm_apdu, plain);
if ((*sm_apdu)->data)
free((*sm_apdu)->data);
if ((*sm_apdu)->resp)
free((*sm_apdu)->resp);
free(*sm_apdu);
*sm_apdu = NULL;
LOG_FUNC_RETURN(ctx, rv);
}
static int
epass2003_sm_get_wrapped_apdu(struct sc_card *card,
struct sc_apdu *plain, struct sc_apdu **sm_apdu)
{
struct sc_context *ctx = card->ctx;
struct sc_apdu *apdu = NULL;
int rv;
LOG_FUNC_CALLED(ctx);
if (!plain || !sm_apdu)
LOG_FUNC_RETURN(ctx, SC_ERROR_INVALID_ARGUMENTS);
*sm_apdu = NULL;
//construct new SM apdu from original apdu
apdu = calloc(1, sizeof(struct sc_apdu));
if (!apdu)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
apdu->data = calloc (1, SC_MAX_EXT_APDU_BUFFER_SIZE);
if (!apdu->data)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
apdu->resp = calloc (1, SC_MAX_EXT_APDU_BUFFER_SIZE);
if (!apdu->resp)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
apdu->datalen = SC_MAX_EXT_APDU_BUFFER_SIZE;
apdu->resplen = SC_MAX_EXT_APDU_BUFFER_SIZE;
rv = epass2003_sm_wrap_apdu(card, plain, apdu);
if (rv) {
rv = epass2003_sm_free_wrapped_apdu(card, NULL, &apdu);
LOG_FUNC_RETURN(ctx, rv);
}
*sm_apdu = apdu;
LOG_FUNC_RETURN(ctx, rv);
}
static int
epass2003_transmit_apdu(struct sc_card *card, struct sc_apdu *apdu)
{
int r;
LOG_FUNC_CALLED(card->ctx);
r = sc_transmit_apdu(card, apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
return r;
}
static int
get_data(struct sc_card *card, unsigned char type, unsigned char *data, size_t datalen)
{
int r;
struct sc_apdu apdu;
unsigned char resp[SC_MAX_APDU_BUFFER_SIZE] = { 0 };
size_t resplen = SC_MAX_APDU_BUFFER_SIZE;
LOG_FUNC_CALLED(card->ctx);
sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0xca, 0x01, type);
apdu.resp = resp;
apdu.le = 0;
apdu.resplen = resplen;
if (0x86 == type) {
/* No SM temporarily */
unsigned char tmp_sm = g_sm;
g_sm = SM_PLAIN;
r = sc_transmit_apdu(card, &apdu);
g_sm = tmp_sm;
}
else {
r = sc_transmit_apdu(card, &apdu);
}
LOG_TEST_RET(card->ctx, r, "APDU get_data failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "get_data failed");
memcpy(data, resp, datalen);
return r;
}
/* card driver functions */
static int epass2003_match_card(struct sc_card *card)
{
int r;
LOG_FUNC_CALLED(card->ctx);
r = _sc_match_atr(card, epass2003_atrs, &card->type);
if (r < 0)
return 0;
return 1;
}
static int
epass2003_init(struct sc_card *card)
{
unsigned int flags;
unsigned char data[SC_MAX_APDU_BUFFER_SIZE] = { 0 };
size_t datalen = SC_MAX_APDU_BUFFER_SIZE;
LOG_FUNC_CALLED(card->ctx);
card->name = "epass2003";
card->cla = 0x00;
card->drv_data = NULL;
/* VT
card->ctx->use_sm = 1;
*/
g_sm = SM_SCP01;
/* g_sm = SM_PLAIN; */
/* decide FIPS/Non-FIPS mode */
if (SC_SUCCESS != get_data(card, 0x86, data, datalen))
return SC_ERROR_CARD_CMD_FAILED;
if (0x01 == data[2])
g_smtype = KEY_TYPE_AES;
else
g_smtype = KEY_TYPE_DES;
/* mutual authentication */
card->max_recv_size = 0xD8;
card->max_send_size = 0xE8;
card->sm_ctx.ops.open = epass2003_refresh;
card->sm_ctx.ops.get_sm_apdu = epass2003_sm_get_wrapped_apdu;
card->sm_ctx.ops.free_sm_apdu = epass2003_sm_free_wrapped_apdu;
/* FIXME (VT): rather then set/unset 'g_sm', better to implement filter for APDUs to be wrapped */
epass2003_refresh(card);