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ADD: added the possibility to choose which block num to attack with "hf mf mifare...
[proxmark3-svn] / armsrc / mifarecmd.c
1 //-----------------------------------------------------------------------------
2 // Merlok - June 2011, 2012
3 // Gerhard de Koning Gans - May 2008
4 // Hagen Fritsch - June 2010
5 // Midnitesnake - Dec 2013
6 // Andy Davies - Apr 2014
7 // Iceman - May 2014
8 //
9 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
10 // at your option, any later version. See the LICENSE.txt file for the text of
11 // the license.
12 //-----------------------------------------------------------------------------
13 // Routines to support ISO 14443 type A.
14 //-----------------------------------------------------------------------------
15
16 #include "mifarecmd.h"
17 #include "apps.h"
18 #include "util.h"
19 #include "crc.h"
20 #include "protocols.h"
21 #include "parity.h"
22
23 //-----------------------------------------------------------------------------
24 // Select, Authenticate, Read a MIFARE tag.
25 // read block
26 //-----------------------------------------------------------------------------
27 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
28 {
29 // params
30 uint8_t blockNo = arg0;
31 uint8_t keyType = arg1;
32 uint64_t ui64Key = 0;
33 ui64Key = bytes_to_num(datain, 6);
34
35 // variables
36 byte_t isOK = 0;
37 byte_t dataoutbuf[16] = {0x00};
38 uint8_t uid[10] = {0x00};
39 uint32_t cuid = 0;
40 struct Crypto1State mpcs = {0, 0};
41 struct Crypto1State *pcs;
42 pcs = &mpcs;
43
44 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
45
46 clear_trace();
47 set_tracing(true);
48
49 LED_A_ON();
50 LED_B_OFF();
51 LED_C_OFF();
52
53 while (true) {
54 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
55 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
56 break;
57 };
58
59 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
60 if (MF_DBGLEVEL >= 1) Dbprintf("Auth error");
61 break;
62 };
63
64 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
65 if (MF_DBGLEVEL >= 1) Dbprintf("Read block error");
66 break;
67 };
68
69 if(mifare_classic_halt(pcs, cuid)) {
70 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
71 break;
72 };
73
74 isOK = 1;
75 break;
76 }
77
78 // ----------------------------- crypto1 destroy
79 crypto1_destroy(pcs);
80
81 if (MF_DBGLEVEL >= 2) DbpString("READ BLOCK FINISHED");
82
83 LED_B_ON();
84 cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
85 LED_B_OFF();
86
87 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
88 LEDsoff();
89 }
90
91 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
92
93 bool turnOffField = (arg0 == 1);
94
95 LED_A_ON(); LED_B_OFF(); LED_C_OFF();
96
97 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
98
99 clear_trace();
100 set_tracing(true);
101
102 if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
103 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
104 OnError(0);
105 return;
106 };
107
108 if(!mifare_ultra_auth(keybytes)){
109 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
110 OnError(1);
111 return;
112 }
113
114 if (turnOffField) {
115 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
116 LEDsoff();
117 }
118 cmd_send(CMD_ACK,1,0,0,0,0);
119 }
120
121 // Arg0 = BlockNo,
122 // Arg1 = UsePwd bool
123 // datain = PWD bytes,
124 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
125 {
126 uint8_t blockNo = arg0;
127 byte_t dataout[16] = {0x00};
128 bool useKey = (arg1 == 1); //UL_C
129 bool usePwd = (arg1 == 2); //UL_EV1/NTAG
130
131 LEDsoff();
132 LED_A_ON();
133 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
134
135 clear_trace();
136 set_tracing(true);
137
138 int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);
139 if(!len) {
140 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
141 OnError(1);
142 return;
143 }
144
145 // UL-C authentication
146 if ( useKey ) {
147 uint8_t key[16] = {0x00};
148 memcpy(key, datain, sizeof(key) );
149
150 if ( !mifare_ultra_auth(key) ) {
151 OnError(1);
152 return;
153 }
154 }
155
156 // UL-EV1 / NTAG authentication
157 if ( usePwd ) {
158 uint8_t pwd[4] = {0x00};
159 memcpy(pwd, datain, 4);
160 uint8_t pack[4] = {0,0,0,0};
161 if (!mifare_ul_ev1_auth(pwd, pack)) {
162 OnError(1);
163 return;
164 }
165 }
166
167 if( mifare_ultra_readblock(blockNo, dataout) ) {
168 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
169 OnError(2);
170 return;
171 }
172
173 if( mifare_ultra_halt() ) {
174 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
175 OnError(3);
176 return;
177 }
178
179 cmd_send(CMD_ACK,1,0,0,dataout,16);
180 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
181 LEDsoff();
182 }
183
184 //-----------------------------------------------------------------------------
185 // Select, Authenticate, Read a MIFARE tag.
186 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
187 //-----------------------------------------------------------------------------
188 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
189 {
190 // params
191 uint8_t sectorNo = arg0;
192 uint8_t keyType = arg1;
193 uint64_t ui64Key = 0;
194 ui64Key = bytes_to_num(datain, 6);
195
196 // variables
197 byte_t isOK = 0;
198 byte_t dataoutbuf[16 * 16];
199 uint8_t uid[10] = {0x00};
200 uint32_t cuid = 0;
201 struct Crypto1State mpcs = {0, 0};
202 struct Crypto1State *pcs;
203 pcs = &mpcs;
204
205 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
206
207 clear_trace();
208 set_tracing(true);
209
210 LED_A_ON();
211 LED_B_OFF();
212 LED_C_OFF();
213
214 isOK = 1;
215 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
216 isOK = 0;
217 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
218 }
219
220
221 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
222 isOK = 0;
223 if (MF_DBGLEVEL >= 1) Dbprintf("Auth error");
224 }
225
226 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
227 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
228 isOK = 0;
229 if (MF_DBGLEVEL >= 1) Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
230 break;
231 }
232 }
233
234 if(mifare_classic_halt(pcs, cuid)) {
235 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
236 }
237
238 // ----------------------------- crypto1 destroy
239 crypto1_destroy(pcs);
240
241 if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
242
243 LED_B_ON();
244 cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
245 LED_B_OFF();
246
247 // Thats it...
248 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
249 LEDsoff();
250 }
251
252 // arg0 = blockNo (start)
253 // arg1 = Pages (number of blocks)
254 // arg2 = useKey
255 // datain = KEY bytes
256 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
257 {
258 LEDsoff();
259 LED_A_ON();
260 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
261
262 // free eventually allocated BigBuf memory
263 BigBuf_free();
264 clear_trace();
265 set_tracing(true);
266
267 // params
268 uint8_t blockNo = arg0;
269 uint16_t blocks = arg1;
270 bool useKey = (arg2 == 1); //UL_C
271 bool usePwd = (arg2 == 2); //UL_EV1/NTAG
272 uint32_t countblocks = 0;
273 uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
274 if (dataout == NULL){
275 Dbprintf("out of memory");
276 OnError(1);
277 return;
278 }
279
280 int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);
281 if (!len) {
282 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
283 OnError(1);
284 return;
285 }
286
287 // UL-C authentication
288 if ( useKey ) {
289 uint8_t key[16] = {0x00};
290 memcpy(key, datain, sizeof(key) );
291
292 if ( !mifare_ultra_auth(key) ) {
293 OnError(1);
294 return;
295 }
296 }
297
298 // UL-EV1 / NTAG authentication
299 if (usePwd) {
300 uint8_t pwd[4] = {0x00};
301 memcpy(pwd, datain, sizeof(pwd));
302 uint8_t pack[4] = {0,0,0,0};
303
304 if (!mifare_ul_ev1_auth(pwd, pack)){
305 OnError(1);
306 return;
307 }
308 }
309
310 for (int i = 0; i < blocks; i++){
311 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
312 Dbprintf("Data exceeds buffer!!");
313 break;
314 }
315
316 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
317
318 if (len) {
319 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
320 // if no blocks read - error out
321 if (i==0){
322 OnError(2);
323 return;
324 } else {
325 //stop at last successful read block and return what we got
326 break;
327 }
328 } else {
329 countblocks++;
330 }
331 }
332
333 len = mifare_ultra_halt();
334 if (len) {
335 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
336 OnError(3);
337 return;
338 }
339
340 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
341
342 countblocks *= 4;
343
344 cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
345 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
346 LEDsoff();
347 BigBuf_free();
348 }
349
350 //-----------------------------------------------------------------------------
351 // Select, Authenticate, Write a MIFARE tag.
352 // read block
353 //-----------------------------------------------------------------------------
354 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
355 {
356 // params
357 uint8_t blockNo = arg0;
358 uint8_t keyType = arg1;
359 uint64_t ui64Key = 0;
360 byte_t blockdata[16] = {0x00};
361
362 ui64Key = bytes_to_num(datain, 6);
363 memcpy(blockdata, datain + 10, 16);
364
365 // variables
366 byte_t isOK = 0;
367 uint8_t uid[10] = {0x00};
368 uint32_t cuid = 0;
369 struct Crypto1State mpcs = {0, 0};
370 struct Crypto1State *pcs;
371 pcs = &mpcs;
372
373 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
374
375 clear_trace();
376 set_tracing(true);
377
378 LED_A_ON();
379 LED_B_OFF();
380 LED_C_OFF();
381
382 while (true) {
383 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
384 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
385 break;
386 };
387
388 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
389 if (MF_DBGLEVEL >= 1) Dbprintf("Auth error");
390 break;
391 };
392
393 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
394 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
395 break;
396 };
397
398 if(mifare_classic_halt(pcs, cuid)) {
399 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
400 break;
401 };
402
403 isOK = 1;
404 break;
405 }
406
407 // ----------------------------- crypto1 destroy
408 crypto1_destroy(pcs);
409
410 if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
411
412 LED_B_ON();
413 cmd_send(CMD_ACK,isOK,0,0,0,0);
414 LED_B_OFF();
415
416
417 // Thats it...
418 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
419 LEDsoff();
420 }
421
422 /* // Command not needed but left for future testing
423 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
424 {
425 uint8_t blockNo = arg0;
426 byte_t blockdata[16] = {0x00};
427
428 memcpy(blockdata, datain, 16);
429
430 uint8_t uid[10] = {0x00};
431
432 LED_A_ON(); LED_B_OFF(); LED_C_OFF();
433
434 clear_trace();
435 set_tracing(true);
436 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
437
438 if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {
439 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
440 OnError(0);
441 return;
442 };
443
444 if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
445 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
446 OnError(0);
447 return; };
448
449 if(mifare_ultra_halt()) {
450 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
451 OnError(0);
452 return;
453 };
454
455 if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
456
457 cmd_send(CMD_ACK,1,0,0,0,0);
458 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
459 LEDsoff();
460 }
461 */
462
463 // Arg0 : Block to write to.
464 // Arg1 : 0 = use no authentication.
465 // 1 = use 0x1A authentication.
466 // 2 = use 0x1B authentication.
467 // datain : 4 first bytes is data to be written.
468 // : 4/16 next bytes is authentication key.
469 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
470 {
471 uint8_t blockNo = arg0;
472 bool useKey = (arg1 == 1); //UL_C
473 bool usePwd = (arg1 == 2); //UL_EV1/NTAG
474 byte_t blockdata[4] = {0x00};
475
476 memcpy(blockdata, datain,4);
477
478 LEDsoff();
479 LED_A_ON();
480 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
481
482 clear_trace();
483 set_tracing(true);
484
485 if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
486 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
487 OnError(0);
488 return;
489 };
490
491 // UL-C authentication
492 if ( useKey ) {
493 uint8_t key[16] = {0x00};
494 memcpy(key, datain+4, sizeof(key) );
495
496 if ( !mifare_ultra_auth(key) ) {
497 OnError(1);
498 return;
499 }
500 }
501
502 // UL-EV1 / NTAG authentication
503 if (usePwd) {
504 uint8_t pwd[4] = {0x00};
505 memcpy(pwd, datain+4, 4);
506 uint8_t pack[4] = {0,0,0,0};
507 if (!mifare_ul_ev1_auth(pwd, pack)) {
508 OnError(1);
509 return;
510 }
511 }
512
513 if(mifare_ultra_writeblock(blockNo, blockdata)) {
514 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
515 OnError(0);
516 return;
517 };
518
519 if(mifare_ultra_halt()) {
520 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
521 OnError(0);
522 return;
523 };
524
525 if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
526
527 cmd_send(CMD_ACK,1,0,0,0,0);
528 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
529 LEDsoff();
530 }
531
532 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
533
534 uint8_t pwd[16] = {0x00};
535 byte_t blockdata[4] = {0x00};
536
537 memcpy(pwd, datain, 16);
538
539 LED_A_ON(); LED_B_OFF(); LED_C_OFF();
540 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
541
542 clear_trace();
543 set_tracing(true);
544
545 if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
546 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
547 OnError(0);
548 return;
549 };
550
551 blockdata[0] = pwd[7];
552 blockdata[1] = pwd[6];
553 blockdata[2] = pwd[5];
554 blockdata[3] = pwd[4];
555 if(mifare_ultra_writeblock( 44, blockdata)) {
556 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
557 OnError(44);
558 return;
559 };
560
561 blockdata[0] = pwd[3];
562 blockdata[1] = pwd[2];
563 blockdata[2] = pwd[1];
564 blockdata[3] = pwd[0];
565 if(mifare_ultra_writeblock( 45, blockdata)) {
566 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
567 OnError(45);
568 return;
569 };
570
571 blockdata[0] = pwd[15];
572 blockdata[1] = pwd[14];
573 blockdata[2] = pwd[13];
574 blockdata[3] = pwd[12];
575 if(mifare_ultra_writeblock( 46, blockdata)) {
576 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
577 OnError(46);
578 return;
579 };
580
581 blockdata[0] = pwd[11];
582 blockdata[1] = pwd[10];
583 blockdata[2] = pwd[9];
584 blockdata[3] = pwd[8];
585 if(mifare_ultra_writeblock( 47, blockdata)) {
586 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
587 OnError(47);
588 return;
589 };
590
591 if(mifare_ultra_halt()) {
592 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
593 OnError(0);
594 return;
595 };
596
597 cmd_send(CMD_ACK,1,0,0,0,0);
598 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
599 LEDsoff();
600 }
601
602 // Return 1 if the nonce is invalid else return 0
603 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
604 return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
605 (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
606 (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
607 }
608
609
610 //-----------------------------------------------------------------------------
611 // acquire encrypted nonces in order to perform the attack described in
612 // Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
613 // Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
614 // Computer and Communications Security, 2015
615 //-----------------------------------------------------------------------------
616 void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain)
617 {
618 uint64_t ui64Key = 0;
619 uint8_t uid[10] = {0x00};
620 uint32_t cuid = 0;
621 uint8_t cascade_levels = 0;
622 struct Crypto1State mpcs = {0, 0};
623 struct Crypto1State *pcs;
624 pcs = &mpcs;
625 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
626 int16_t isOK = 0;
627 uint8_t par_enc[1] = {0x00};
628 uint8_t nt_par_enc = 0;
629 uint8_t buf[USB_CMD_DATA_SIZE] = {0x00};
630 uint32_t timeout = 0;
631
632 uint8_t blockNo = arg0 & 0xff;
633 uint8_t keyType = (arg0 >> 8) & 0xff;
634 uint8_t targetBlockNo = arg1 & 0xff;
635 uint8_t targetKeyType = (arg1 >> 8) & 0xff;
636 ui64Key = bytes_to_num(datain, 6);
637 bool initialize = flags & 0x0001;
638 bool slow = flags & 0x0002;
639 bool field_off = flags & 0x0004;
640
641 #define AUTHENTICATION_TIMEOUT 848 // card times out 1ms after wrong authentication (according to NXP documentation)
642 #define PRE_AUTHENTICATION_LEADTIME 400 // some (non standard) cards need a pause after select before they are ready for first authentication
643
644 LED_A_ON();
645 LED_C_OFF();
646
647 if (initialize) {
648 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
649 clear_trace();
650 set_tracing(true);
651 }
652
653 LED_C_ON();
654
655 uint16_t num_nonces = 0;
656 bool have_uid = false;
657 for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {
658
659 // Test if the action was cancelled
660 if(BUTTON_PRESS()) {
661 isOK = 2;
662 field_off = true;
663 break;
664 }
665
666 if (!have_uid) { // need a full select cycle to get the uid first
667 iso14a_card_select_t card_info;
668 if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0)) {
669 if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Can't select card (ALL)");
670 continue;
671 }
672 switch (card_info.uidlen) {
673 case 4 : cascade_levels = 1; break;
674 case 7 : cascade_levels = 2; break;
675 case 10: cascade_levels = 3; break;
676 default: break;
677 }
678 have_uid = true;
679 } else { // no need for anticollision. We can directly select the card
680 if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels)) {
681 if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Can't select card (UID)");
682 continue;
683 }
684 }
685
686 if (slow) {
687 timeout = GetCountSspClk() + PRE_AUTHENTICATION_LEADTIME;
688 while(GetCountSspClk() < timeout);
689 }
690
691 uint32_t nt1;
692 if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL)) {
693 if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Auth1 error");
694 continue;
695 }
696
697 // nested authentication
698 uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);
699 if (len != 4) {
700 if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Auth2 error len=%d", len);
701 continue;
702 }
703
704 // send a dummy byte as reader response in order to trigger the cards authentication timeout
705 uint8_t dummy_answer = 0;
706 ReaderTransmit(&dummy_answer, 1, NULL);
707 timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
708
709 num_nonces++;
710 if (num_nonces % 2) {
711 memcpy(buf+i, receivedAnswer, 4);
712 nt_par_enc = par_enc[0] & 0xf0;
713 } else {
714 nt_par_enc |= par_enc[0] >> 4;
715 memcpy(buf+i+4, receivedAnswer, 4);
716 memcpy(buf+i+8, &nt_par_enc, 1);
717 i += 9;
718 }
719
720 // wait for the card to become ready again
721 while(GetCountSspClk() < timeout);
722
723 }
724
725 LED_C_OFF();
726
727 crypto1_destroy(pcs);
728
729 LED_B_ON();
730 cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
731 LED_B_OFF();
732
733 if (MF_DBGLEVEL >= 3) DbpString("AcquireEncryptedNonces finished");
734
735 if (field_off) {
736 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
737 LEDsoff();
738 }
739 }
740
741
742 //-----------------------------------------------------------------------------
743 // MIFARE nested authentication.
744 //
745 //-----------------------------------------------------------------------------
746 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
747 {
748 // params
749 uint8_t blockNo = arg0 & 0xff;
750 uint8_t keyType = (arg0 >> 8) & 0xff;
751 uint8_t targetBlockNo = arg1 & 0xff;
752 uint8_t targetKeyType = (arg1 >> 8) & 0xff;
753 uint64_t ui64Key = 0;
754
755 ui64Key = bytes_to_num(datain, 6);
756
757 // variables
758 uint16_t rtr, i, j, len;
759 uint16_t davg = 0;
760 static uint16_t dmin, dmax;
761 uint8_t uid[10] = {0x00};
762 uint32_t cuid = 0, nt1, nt2, nttmp, nttest, ks1;
763 uint8_t par[1] = {0x00};
764 uint32_t target_nt[2] = {0x00}, target_ks[2] = {0x00};
765
766 uint8_t par_array[4] = {0x00};
767 uint16_t ncount = 0;
768 struct Crypto1State mpcs = {0, 0};
769 struct Crypto1State *pcs;
770 pcs = &mpcs;
771 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
772
773 uint32_t auth1_time, auth2_time;
774 static uint16_t delta_time;
775
776 LED_A_ON();
777 LED_C_OFF();
778 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
779
780 // free eventually allocated BigBuf memory
781 BigBuf_free();
782
783 if (calibrate) clear_trace();
784 set_tracing(true);
785
786 // statistics on nonce distance
787 int16_t isOK = 0;
788 #define NESTED_MAX_TRIES 12
789 uint16_t unsuccessfull_tries = 0;
790 if (calibrate) { // for first call only. Otherwise reuse previous calibration
791 LED_B_ON();
792 WDT_HIT();
793
794 davg = dmax = 0;
795 dmin = 2000;
796 delta_time = 0;
797
798 for (rtr = 0; rtr < 17; rtr++) {
799
800 // Test if the action was cancelled
801 if(BUTTON_PRESS()) {
802 isOK = -2;
803 break;
804 }
805
806 // prepare next select. No need to power down the card.
807 if(mifare_classic_halt(pcs, cuid)) {
808 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Halt error");
809 rtr--;
810 continue;
811 }
812
813 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
814 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Can't select card");
815 rtr--;
816 continue;
817 };
818
819 auth1_time = 0;
820 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
821 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth1 error");
822 rtr--;
823 continue;
824 };
825
826 if (delta_time) {
827 auth2_time = auth1_time + delta_time;
828 } else {
829 auth2_time = 0;
830 }
831 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
832 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth2 error");
833 rtr--;
834 continue;
835 };
836
837 nttmp = prng_successor(nt1, 100); //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
838 for (i = 101; i < 1200; i++) {
839 nttmp = prng_successor(nttmp, 1);
840 if (nttmp == nt2) break;
841 }
842
843 if (i != 1200) {
844 if (rtr != 0) {
845 davg += i;
846 dmin = MIN(dmin, i);
847 dmax = MAX(dmax, i);
848 }
849 else {
850 delta_time = auth2_time - auth1_time + 32; // allow some slack for proper timing
851 }
852 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
853 } else {
854 unsuccessfull_tries++;
855 if (unsuccessfull_tries > NESTED_MAX_TRIES) { // card isn't vulnerable to nested attack (random numbers are not predictable)
856 isOK = -3;
857 }
858 }
859 }
860
861 davg = (davg + (rtr - 1)/2) / (rtr - 1);
862
863 if (MF_DBGLEVEL >= 3) Dbprintf("rtr=%d isOK=%d min=%d max=%d avg=%d, delta_time=%d", rtr, isOK, dmin, dmax, davg, delta_time);
864
865 dmin = davg - 2;
866 dmax = davg + 2;
867
868 LED_B_OFF();
869 }
870 // -------------------------------------------------------------------------------------------------
871
872 LED_C_ON();
873
874 // get crypted nonces for target sector
875 for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
876
877 target_nt[i] = 0;
878 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
879
880 // prepare next select. No need to power down the card.
881 if(mifare_classic_halt(pcs, cuid)) {
882 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Halt error");
883 continue;
884 }
885
886 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
887 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Can't select card");
888 continue;
889 };
890
891 auth1_time = 0;
892 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
893 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth1 error");
894 continue;
895 };
896
897 // nested authentication
898 auth2_time = auth1_time + delta_time;
899 len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
900 if (len != 4) {
901 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth2 error len=%d", len);
902 continue;
903 };
904
905 nt2 = bytes_to_num(receivedAnswer, 4);
906 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
907
908 // Parity validity check
909 for (j = 0; j < 4; j++) {
910 par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
911 }
912
913 ncount = 0;
914 nttest = prng_successor(nt1, dmin - 1);
915 for (j = dmin; j < dmax + 1; j++) {
916 nttest = prng_successor(nttest, 1);
917 ks1 = nt2 ^ nttest;
918
919 if (valid_nonce(nttest, nt2, ks1, par_array)){
920 if (ncount > 0) { // we are only interested in disambiguous nonces, try again
921 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
922 target_nt[i] = 0;
923 break;
924 }
925 target_nt[i] = nttest;
926 target_ks[i] = ks1;
927 ncount++;
928 if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
929 target_nt[i] = 0;
930 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
931 break;
932 }
933 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
934 }
935 }
936 if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
937 }
938 }
939
940 LED_C_OFF();
941
942 // ----------------------------- crypto1 destroy
943 crypto1_destroy(pcs);
944
945 byte_t buf[4 + 4 * 4];
946 memcpy(buf, &cuid, 4);
947 memcpy(buf+4, &target_nt[0], 4);
948 memcpy(buf+8, &target_ks[0], 4);
949 memcpy(buf+12, &target_nt[1], 4);
950 memcpy(buf+16, &target_ks[1], 4);
951
952 LED_B_ON();
953 cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
954 LED_B_OFF();
955
956 if (MF_DBGLEVEL >= 3) DbpString("NESTED FINISHED");
957
958 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
959 LEDsoff();
960 set_tracing(FALSE);
961 }
962
963 //-----------------------------------------------------------------------------
964 // MIFARE check keys. key count up to 85.
965 //
966 //-----------------------------------------------------------------------------
967 void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
968 {
969 // params
970 uint8_t blockNo = arg0 & 0xff;
971 uint8_t keyType = (arg0 >> 8) & 0xff;
972 bool clearTrace = arg1;
973 uint8_t keyCount = arg2;
974 uint64_t ui64Key = 0;
975
976 // variables
977 int i;
978 byte_t isOK = 0;
979 uint8_t uid[10] = {0x00};
980 uint32_t cuid = 0;
981 struct Crypto1State mpcs = {0, 0};
982 struct Crypto1State *pcs;
983 pcs = &mpcs;
984
985 // clear debug level
986 int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
987 MF_DBGLEVEL = MF_DBG_NONE;
988
989 LED_A_ON();
990 LED_B_OFF();
991 LED_C_OFF();
992 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
993
994 if (clearTrace)
995 clear_trace();
996
997 set_tracing(TRUE);
998
999 for (i = 0; i < keyCount; i++) {
1000 if(mifare_classic_halt(pcs, cuid)) {
1001 if (MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Halt error");
1002 }
1003
1004 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1005 if (OLD_MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Can't select card");
1006 break;
1007 };
1008
1009 ui64Key = bytes_to_num(datain + i * 6, 6);
1010 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
1011 continue;
1012 };
1013
1014 isOK = 1;
1015 break;
1016 }
1017
1018 // ----------------------------- crypto1 destroy
1019 crypto1_destroy(pcs);
1020
1021 LED_B_ON();
1022 cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
1023 LED_B_OFF();
1024
1025 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1026 LEDsoff();
1027 set_tracing(FALSE);
1028
1029 // restore debug level
1030 MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1031 }
1032
1033 //-----------------------------------------------------------------------------
1034 // MIFARE commands set debug level
1035 //
1036 //-----------------------------------------------------------------------------
1037 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1038 MF_DBGLEVEL = arg0;
1039 Dbprintf("Debug level: %d", MF_DBGLEVEL);
1040 }
1041
1042 //-----------------------------------------------------------------------------
1043 // Work with emulator memory
1044 //
1045 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1046 // involved in dealing with emulator memory. But if it is called later, it might
1047 // destroy the Emulator Memory.
1048 //-----------------------------------------------------------------------------
1049
1050 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1051 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1052 emlClearMem();
1053 }
1054
1055 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1056 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1057 if (arg2==0) arg2 = 16; // backwards compat... default bytewidth
1058 emlSetMem_xt(datain, arg0, arg1, arg2); // data, block num, blocks count, block byte width
1059 }
1060
1061 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1062 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1063 byte_t buf[USB_CMD_DATA_SIZE] = {0x00};
1064 emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1065
1066 LED_B_ON();
1067 cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1068 LED_B_OFF();
1069 }
1070
1071 //-----------------------------------------------------------------------------
1072 // Load a card into the emulator memory
1073 //
1074 //-----------------------------------------------------------------------------
1075 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1076 uint8_t numSectors = arg0;
1077 uint8_t keyType = arg1;
1078 uint64_t ui64Key = 0;
1079 uint32_t cuid = 0;
1080 struct Crypto1State mpcs = {0, 0};
1081 struct Crypto1State *pcs;
1082 pcs = &mpcs;
1083
1084 // variables
1085 byte_t dataoutbuf[16] = {0x00};
1086 byte_t dataoutbuf2[16] = {0x00};
1087 uint8_t uid[10] = {0x00};
1088
1089 LED_A_ON();
1090 LED_B_OFF();
1091 LED_C_OFF();
1092 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1093
1094 clear_trace();
1095 set_tracing(TRUE);
1096
1097 bool isOK = true;
1098
1099 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1100 isOK = false;
1101 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
1102 }
1103
1104 for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1105 ui64Key = emlGetKey(sectorNo, keyType);
1106 if (sectorNo == 0){
1107 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1108 isOK = false;
1109 if (MF_DBGLEVEL >= 1) Dbprintf("Sector[%2d]. Auth error", sectorNo);
1110 break;
1111 }
1112 } else {
1113 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1114 isOK = false;
1115 if (MF_DBGLEVEL >= 1) Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1116 break;
1117 }
1118 }
1119
1120 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1121 if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1122 isOK = false;
1123 if (MF_DBGLEVEL >= 1) Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1124 break;
1125 }
1126 if (isOK) {
1127 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1128 emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1129 } else { // sector trailer, keep the keys, set only the AC
1130 emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1131 memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1132 emlSetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1133 }
1134 }
1135 }
1136
1137 }
1138
1139 if(mifare_classic_halt(pcs, cuid))
1140 if (MF_DBGLEVEL >= 1)
1141 Dbprintf("Halt error");
1142
1143 // ----------------------------- crypto1 destroy
1144 crypto1_destroy(pcs);
1145
1146 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1147 LEDsoff();
1148
1149 if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1150
1151 set_tracing(FALSE);
1152 }
1153
1154
1155 //-----------------------------------------------------------------------------
1156 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1157 //
1158 // PARAMS - workFlags
1159 // bit 0 - need get UID
1160 // bit 1 - need wupC
1161 // bit 2 - need HALT after sequence
1162 // bit 3 - need turn on FPGA before sequence
1163 // bit 4 - need turn off FPGA
1164 // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1165 // bit 6 - wipe tag.
1166 //-----------------------------------------------------------------------------
1167 // magic uid card generation 1 commands
1168 uint8_t wupC1[] = { MIFARE_MAGICWUPC1 };
1169 uint8_t wupC2[] = { MIFARE_MAGICWUPC2 };
1170 uint8_t wipeC[] = { MIFARE_MAGICWIPEC };
1171
1172 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1173
1174 // params
1175 uint8_t workFlags = arg0;
1176 uint8_t blockNo = arg1;
1177
1178 Dbprintf("ICE :: CSetBlocks Flags %02x", workFlags);
1179
1180 // variables
1181 uint8_t uid[10] = {0x00};
1182 uint8_t data[18] = {0x00};
1183 uint32_t cuid = 0;
1184
1185 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1186 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1187
1188 if (workFlags & MAGIC_INIT) {
1189 LED_A_ON();
1190 LED_B_OFF();
1191 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1192 clear_trace();
1193 set_tracing(TRUE);
1194 }
1195
1196 // read UID and return to client
1197 if (workFlags & MAGIC_UID) {
1198 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1199 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1200 OnErrorMagic(MAGIC_UID);
1201 }
1202 }
1203
1204 // wipe tag, fill it with zeros
1205 if (workFlags & MAGIC_WIPE){
1206 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1207 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1208 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1209 OnErrorMagic(MAGIC_WIPE);
1210 }
1211
1212 ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1213 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1214 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wipeC error");
1215 OnErrorMagic(MAGIC_WIPE);
1216 }
1217 }
1218
1219 // write block
1220 if (workFlags & MAGIC_WUPC) {
1221 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1222 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1223 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1224 OnErrorMagic(MAGIC_WUPC);
1225 }
1226
1227 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1228 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1229 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1230 OnErrorMagic(MAGIC_WUPC);
1231 }
1232 }
1233
1234 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1235 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send command error");
1236 OnErrorMagic(4);
1237 }
1238
1239 memcpy(data, datain, 16);
1240 AppendCrc14443a(data, 16);
1241
1242 ReaderTransmit(data, sizeof(data), NULL);
1243 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1244 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send data error");
1245 OnErrorMagic(0);
1246 }
1247
1248 if (workFlags & MAGIC_OFF)
1249 mifare_classic_halt_ex(NULL);
1250
1251 LED_B_ON();
1252 // check if uid is cuid?
1253 cmd_send(CMD_ACK,1,0,0,uid,sizeof(uid));
1254 LED_B_OFF();
1255
1256 if (workFlags & MAGIC_OFF)
1257 OnSuccessMagic();
1258 }
1259
1260 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1261
1262 uint8_t workFlags = arg0;
1263 uint8_t blockNo = arg1;
1264
1265 // variables
1266 uint8_t data[MAX_MIFARE_FRAME_SIZE];
1267 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1268 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1269
1270 memset(data, 0x00, sizeof(data));
1271
1272 if (workFlags & MAGIC_INIT) {
1273 LED_A_ON();
1274 LED_B_OFF();
1275 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1276 clear_trace();
1277 set_tracing(TRUE);
1278 }
1279
1280 if (workFlags & MAGIC_WUPC) {
1281 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1282 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1283 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1284 OnErrorMagic(MAGIC_WUPC);
1285 }
1286
1287 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1288 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1289 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1290 OnErrorMagic(MAGIC_WUPC);
1291 }
1292 }
1293
1294 // read block
1295 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1296 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("read block send command error");
1297 OnErrorMagic(0);
1298 }
1299
1300 memcpy(data, receivedAnswer, sizeof(data));
1301
1302 // send HALT
1303 if (workFlags & MAGIC_HALT)
1304 mifare_classic_halt_ex(NULL);
1305
1306 LED_B_ON();
1307
1308 // if MAGIC_DATAIN, the data stays on device side.
1309 if (workFlags & MAGIC_DATAIN)
1310 memcpy(datain, data, sizeof(data));
1311 else
1312 cmd_send(CMD_ACK,1,0,0,data,sizeof(data));
1313
1314 LED_B_OFF();
1315
1316 if (workFlags & MAGIC_OFF)
1317 OnSuccessMagic();
1318 }
1319
1320 void MifareCIdent(){
1321
1322 // variables
1323 bool isOK = true;
1324 uint8_t receivedAnswer[1] = {0x00};
1325 uint8_t receivedAnswerPar[1] = {0x00};
1326
1327 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1328 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1329 isOK = false;
1330 }
1331
1332 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1333 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1334 isOK = false;
1335 }
1336
1337 // removed the if, since some magic tags misbehavies and send an answer to it.
1338 mifare_classic_halt(NULL, 0);
1339 cmd_send(CMD_ACK,isOK,0,0,0,0);
1340 }
1341
1342 void OnSuccessMagic(){
1343 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1344 LEDsoff();
1345 set_tracing(FALSE);
1346 }
1347 void OnErrorMagic(uint8_t reason){
1348 // ACK, ISOK, reason,0,0,0
1349 cmd_send(CMD_ACK,0,reason,0,0,0);
1350 OnSuccessMagic();
1351 }
1352
1353 void MifareCollectNonces(uint32_t arg0, uint32_t arg1){
1354 }
1355
1356 //
1357 // DESFIRE
1358 //
1359
1360 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1361
1362 byte_t dataout[12] = {0x00};
1363 uint8_t uid[10] = {0x00};
1364 uint32_t cuid = 0;
1365
1366 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1367 clear_trace();
1368 set_tracing(true);
1369
1370 int len = iso14443a_select_card(uid, NULL, &cuid, true, 0);
1371 if(!len) {
1372 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1373 OnError(1);
1374 return;
1375 };
1376
1377 if(mifare_desfire_des_auth1(cuid, dataout)){
1378 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1379 OnError(4);
1380 return;
1381 }
1382
1383 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1384 cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1385 }
1386
1387 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1388
1389 uint32_t cuid = arg0;
1390 uint8_t key[16] = {0x00};
1391 byte_t dataout[12] = {0x00};
1392 byte_t isOK = 0;
1393
1394 memcpy(key, datain, 16);
1395
1396 isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1397
1398 if( isOK) {
1399 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1400 OnError(4);
1401 return;
1402 }
1403
1404 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1405
1406 cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1407 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1408 LEDsoff();
1409 }
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