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[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 2014,2015,2016
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(pcs);
79
80 if (MF_DBGLEVEL >= 2) DbpString("READ BLOCK FINISHED");
81
82 LED_B_ON();
83 cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
84 LED_B_OFF();
85
86 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
87 LEDsoff();
88 }
89
90 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
91
92 bool turnOffField = (arg0 == 1);
93
94 LED_A_ON(); LED_B_OFF(); LED_C_OFF();
95
96 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
97
98 clear_trace();
99 set_tracing(true);
100
101 if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
102 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
103 OnError(0);
104 return;
105 };
106
107 if(!mifare_ultra_auth(keybytes)){
108 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
109 OnError(1);
110 return;
111 }
112
113 if (turnOffField) {
114 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
115 LEDsoff();
116 }
117 cmd_send(CMD_ACK,1,0,0,0,0);
118 }
119
120 // Arg0 = BlockNo,
121 // Arg1 = UsePwd bool
122 // datain = PWD bytes,
123 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
124 {
125 uint8_t blockNo = arg0;
126 byte_t dataout[16] = {0x00};
127 bool useKey = (arg1 == 1); //UL_C
128 bool usePwd = (arg1 == 2); //UL_EV1/NTAG
129
130 LEDsoff();
131 LED_A_ON();
132 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
133
134 clear_trace();
135 set_tracing(true);
136
137 int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);
138 if(!len) {
139 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
140 OnError(1);
141 return;
142 }
143
144 // UL-C authentication
145 if ( useKey ) {
146 uint8_t key[16] = {0x00};
147 memcpy(key, datain, sizeof(key) );
148
149 if ( !mifare_ultra_auth(key) ) {
150 OnError(1);
151 return;
152 }
153 }
154
155 // UL-EV1 / NTAG authentication
156 if ( usePwd ) {
157 uint8_t pwd[4] = {0x00};
158 memcpy(pwd, datain, 4);
159 uint8_t pack[4] = {0,0,0,0};
160 if (!mifare_ul_ev1_auth(pwd, pack)) {
161 OnError(1);
162 return;
163 }
164 }
165
166 if( mifare_ultra_readblock(blockNo, dataout) ) {
167 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
168 OnError(2);
169 return;
170 }
171
172 if( mifare_ultra_halt() ) {
173 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
174 OnError(3);
175 return;
176 }
177
178 cmd_send(CMD_ACK,1,0,0,dataout,16);
179 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
180 LEDsoff();
181 }
182
183 //-----------------------------------------------------------------------------
184 // Select, Authenticate, Read a MIFARE tag.
185 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
186 //-----------------------------------------------------------------------------
187 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
188 {
189 // params
190 uint8_t sectorNo = arg0;
191 uint8_t keyType = arg1;
192 uint64_t ui64Key = 0;
193 ui64Key = bytes_to_num(datain, 6);
194
195 // variables
196 byte_t isOK = 0;
197 byte_t dataoutbuf[16 * 16];
198 uint8_t uid[10] = {0x00};
199 uint32_t cuid = 0;
200 struct Crypto1State mpcs = {0, 0};
201 struct Crypto1State *pcs;
202 pcs = &mpcs;
203
204 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
205
206 clear_trace();
207 set_tracing(true);
208
209 LED_A_ON();
210 LED_B_OFF();
211 LED_C_OFF();
212
213 isOK = 1;
214 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
215 isOK = 0;
216 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
217 }
218
219
220 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
221 isOK = 0;
222 if (MF_DBGLEVEL >= 1) Dbprintf("Auth error");
223 }
224
225 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
226 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
227 isOK = 0;
228 if (MF_DBGLEVEL >= 1) Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
229 break;
230 }
231 }
232
233 if(mifare_classic_halt(pcs, cuid)) {
234 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
235 }
236
237 if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
238
239 crypto1_destroy(pcs);
240
241 LED_B_ON();
242 cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
243 LED_B_OFF();
244
245 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
246 LEDsoff();
247 set_tracing(FALSE);
248 }
249
250 // arg0 = blockNo (start)
251 // arg1 = Pages (number of blocks)
252 // arg2 = useKey
253 // datain = KEY bytes
254 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
255 {
256 LEDsoff();
257 LED_A_ON();
258 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
259
260 // free eventually allocated BigBuf memory
261 BigBuf_free(); BigBuf_Clear_ext(false);
262 clear_trace();
263 set_tracing(true);
264
265 // params
266 uint8_t blockNo = arg0;
267 uint16_t blocks = arg1;
268 bool useKey = (arg2 == 1); //UL_C
269 bool usePwd = (arg2 == 2); //UL_EV1/NTAG
270 uint32_t countblocks = 0;
271 uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
272 if (dataout == NULL){
273 Dbprintf("out of memory");
274 OnError(1);
275 return;
276 }
277
278 int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);
279 if (!len) {
280 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
281 OnError(1);
282 return;
283 }
284
285 // UL-C authentication
286 if ( useKey ) {
287 uint8_t key[16] = {0x00};
288 memcpy(key, datain, sizeof(key) );
289
290 if ( !mifare_ultra_auth(key) ) {
291 OnError(1);
292 return;
293 }
294 }
295
296 // UL-EV1 / NTAG authentication
297 if (usePwd) {
298 uint8_t pwd[4] = {0x00};
299 memcpy(pwd, datain, sizeof(pwd));
300 uint8_t pack[4] = {0,0,0,0};
301
302 if (!mifare_ul_ev1_auth(pwd, pack)){
303 OnError(1);
304 return;
305 }
306 }
307
308 for (int i = 0; i < blocks; i++){
309 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
310 Dbprintf("Data exceeds buffer!!");
311 break;
312 }
313
314 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
315
316 if (len) {
317 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
318 // if no blocks read - error out
319 if (i==0){
320 OnError(2);
321 return;
322 } else {
323 //stop at last successful read block and return what we got
324 break;
325 }
326 } else {
327 countblocks++;
328 }
329 }
330
331 len = mifare_ultra_halt();
332 if (len) {
333 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
334 OnError(3);
335 return;
336 }
337
338 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
339
340 countblocks *= 4;
341
342 cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
343 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
344 LEDsoff();
345 BigBuf_free();
346 set_tracing(FALSE);
347 }
348
349 //-----------------------------------------------------------------------------
350 // Select, Authenticate, Write a MIFARE tag.
351 // read block
352 //-----------------------------------------------------------------------------
353 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
354 {
355 // params
356 uint8_t blockNo = arg0;
357 uint8_t keyType = arg1;
358 uint64_t ui64Key = 0;
359 byte_t blockdata[16] = {0x00};
360
361 ui64Key = bytes_to_num(datain, 6);
362 memcpy(blockdata, datain + 10, 16);
363
364 // variables
365 byte_t isOK = 0;
366 uint8_t uid[10] = {0x00};
367 uint32_t cuid = 0;
368 struct Crypto1State mpcs = {0, 0};
369 struct Crypto1State *pcs;
370 pcs = &mpcs;
371
372 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
373
374 clear_trace();
375 set_tracing(true);
376
377 LED_A_ON();
378 LED_B_OFF();
379 LED_C_OFF();
380
381 while (true) {
382 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
383 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
384 break;
385 };
386
387 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
388 if (MF_DBGLEVEL >= 1) Dbprintf("Auth error");
389 break;
390 };
391
392 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
393 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
394 break;
395 };
396
397 if(mifare_classic_halt(pcs, cuid)) {
398 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
399 break;
400 };
401
402 isOK = 1;
403 break;
404 }
405
406 crypto1_destroy(pcs);
407
408 if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
409
410 cmd_send(CMD_ACK,isOK,0,0,0,0);
411
412 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
413 LEDsoff();
414 set_tracing(FALSE);
415 }
416
417 /* // Command not needed but left for future testing
418 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
419 {
420 uint8_t blockNo = arg0;
421 byte_t blockdata[16] = {0x00};
422
423 memcpy(blockdata, datain, 16);
424
425 uint8_t uid[10] = {0x00};
426
427 LED_A_ON(); LED_B_OFF(); LED_C_OFF();
428
429 clear_trace();
430 set_tracing(true);
431 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
432
433 if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {
434 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
435 OnError(0);
436 return;
437 };
438
439 if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
440 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
441 OnError(0);
442 return; };
443
444 if(mifare_ultra_halt()) {
445 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
446 OnError(0);
447 return;
448 };
449
450 if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
451
452 cmd_send(CMD_ACK,1,0,0,0,0);
453 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
454 LEDsoff();
455 }
456 */
457
458 // Arg0 : Block to write to.
459 // Arg1 : 0 = use no authentication.
460 // 1 = use 0x1A authentication.
461 // 2 = use 0x1B authentication.
462 // datain : 4 first bytes is data to be written.
463 // : 4/16 next bytes is authentication key.
464 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
465 {
466 uint8_t blockNo = arg0;
467 bool useKey = (arg1 == 1); //UL_C
468 bool usePwd = (arg1 == 2); //UL_EV1/NTAG
469 byte_t blockdata[4] = {0x00};
470
471 memcpy(blockdata, datain,4);
472
473 LEDsoff();
474 LED_A_ON();
475 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
476
477 clear_trace();
478 set_tracing(true);
479
480 if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
481 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
482 OnError(0);
483 return;
484 };
485
486 // UL-C authentication
487 if ( useKey ) {
488 uint8_t key[16] = {0x00};
489 memcpy(key, datain+4, sizeof(key) );
490
491 if ( !mifare_ultra_auth(key) ) {
492 OnError(1);
493 return;
494 }
495 }
496
497 // UL-EV1 / NTAG authentication
498 if (usePwd) {
499 uint8_t pwd[4] = {0x00};
500 memcpy(pwd, datain+4, 4);
501 uint8_t pack[4] = {0,0,0,0};
502 if (!mifare_ul_ev1_auth(pwd, pack)) {
503 OnError(1);
504 return;
505 }
506 }
507
508 if(mifare_ultra_writeblock(blockNo, blockdata)) {
509 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
510 OnError(0);
511 return;
512 };
513
514 if(mifare_ultra_halt()) {
515 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
516 OnError(0);
517 return;
518 };
519
520 if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
521
522 cmd_send(CMD_ACK,1,0,0,0,0);
523 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
524 LEDsoff();
525 set_tracing(FALSE);
526 }
527
528 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
529
530 uint8_t pwd[16] = {0x00};
531 byte_t blockdata[4] = {0x00};
532
533 memcpy(pwd, datain, 16);
534
535 LED_A_ON(); LED_B_OFF(); LED_C_OFF();
536 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
537
538 clear_trace();
539 set_tracing(true);
540
541 if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
542 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
543 OnError(0);
544 return;
545 };
546
547 blockdata[0] = pwd[7];
548 blockdata[1] = pwd[6];
549 blockdata[2] = pwd[5];
550 blockdata[3] = pwd[4];
551 if(mifare_ultra_writeblock( 44, blockdata)) {
552 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
553 OnError(44);
554 return;
555 };
556
557 blockdata[0] = pwd[3];
558 blockdata[1] = pwd[2];
559 blockdata[2] = pwd[1];
560 blockdata[3] = pwd[0];
561 if(mifare_ultra_writeblock( 45, blockdata)) {
562 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
563 OnError(45);
564 return;
565 };
566
567 blockdata[0] = pwd[15];
568 blockdata[1] = pwd[14];
569 blockdata[2] = pwd[13];
570 blockdata[3] = pwd[12];
571 if(mifare_ultra_writeblock( 46, blockdata)) {
572 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
573 OnError(46);
574 return;
575 };
576
577 blockdata[0] = pwd[11];
578 blockdata[1] = pwd[10];
579 blockdata[2] = pwd[9];
580 blockdata[3] = pwd[8];
581 if(mifare_ultra_writeblock( 47, blockdata)) {
582 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
583 OnError(47);
584 return;
585 };
586
587 if(mifare_ultra_halt()) {
588 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
589 OnError(0);
590 return;
591 };
592
593 cmd_send(CMD_ACK,1,0,0,0,0);
594 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
595 LEDsoff();
596 set_tracing(FALSE);
597 }
598
599 // Return 1 if the nonce is invalid else return 0
600 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
601 return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
602 (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
603 (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
604 }
605
606
607 //-----------------------------------------------------------------------------
608 // acquire encrypted nonces in order to perform the attack described in
609 // Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
610 // Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
611 // Computer and Communications Security, 2015
612 //-----------------------------------------------------------------------------
613 #define AUTHENTICATION_TIMEOUT 848 //848 // card times out 1ms after wrong authentication (according to NXP documentation)
614 #define PRE_AUTHENTICATION_LEADTIME 400 // some (non standard) cards need a pause after select before they are ready for first authentication
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 LED_A_ON();
642 LED_C_OFF();
643
644 if (initialize) {
645 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
646 clear_trace();
647 set_tracing(FALSE);
648 }
649 LED_C_ON();
650
651 uint16_t num_nonces = 0;
652 bool have_uid = false;
653 for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {
654
655 // Test if the action was cancelled
656 if(BUTTON_PRESS()) {
657 isOK = 2;
658 field_off = true;
659 break;
660 }
661
662 if (!have_uid) { // need a full select cycle to get the uid first
663 iso14a_card_select_t card_info;
664 if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0)) {
665 if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Can't select card (ALL)");
666 continue;
667 }
668 switch (card_info.uidlen) {
669 case 4 : cascade_levels = 1; break;
670 case 7 : cascade_levels = 2; break;
671 case 10: cascade_levels = 3; break;
672 default: break;
673 }
674 have_uid = true;
675 } else { // no need for anticollision. We can directly select the card
676 if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels)) {
677 if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Can't select card (UID)");
678 continue;
679 }
680 }
681
682 if (slow) {
683 timeout = GetCountSspClk() + PRE_AUTHENTICATION_LEADTIME;
684 while(GetCountSspClk() < timeout);
685 }
686
687 uint32_t nt1;
688 if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL)) {
689 if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Auth1 error");
690 continue;
691 }
692
693 // nested authentication
694 uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);
695 if (len != 4) {
696 if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Auth2 error len=%d", len);
697 continue;
698 }
699
700 // send a dummy byte as reader response in order to trigger the cards authentication timeout
701 uint8_t dummy_answer = 0;
702 ReaderTransmit(&dummy_answer, 1, NULL);
703 timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
704
705 num_nonces++;
706 if (num_nonces % 2) {
707 memcpy(buf+i, receivedAnswer, 4);
708 nt_par_enc = par_enc[0] & 0xf0;
709 } else {
710 nt_par_enc |= par_enc[0] >> 4;
711 memcpy(buf+i+4, receivedAnswer, 4);
712 memcpy(buf+i+8, &nt_par_enc, 1);
713 i += 9;
714 }
715 // wait for the card to become ready again
716 while(GetCountSspClk() < timeout);
717 }
718
719 LED_C_OFF();
720 crypto1_destroy(pcs);
721 LED_B_ON();
722 cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
723 LED_B_OFF();
724
725 if (MF_DBGLEVEL >= 3) DbpString("AcquireEncryptedNonces finished");
726
727 if (field_off) {
728 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
729 LEDsoff();
730 //set_tracing(FALSE);
731 }
732 }
733
734
735 //-----------------------------------------------------------------------------
736 // MIFARE nested authentication.
737 //
738 //-----------------------------------------------------------------------------
739 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
740 {
741 // params
742 uint8_t blockNo = arg0 & 0xff;
743 uint8_t keyType = (arg0 >> 8) & 0xff;
744 uint8_t targetBlockNo = arg1 & 0xff;
745 uint8_t targetKeyType = (arg1 >> 8) & 0xff;
746 uint64_t ui64Key = 0;
747
748 ui64Key = bytes_to_num(datain, 6);
749
750 // variables
751 uint16_t rtr, i, j, len;
752 uint16_t davg = 0;
753 static uint16_t dmin, dmax;
754 uint8_t uid[10] = {0x00};
755 uint32_t cuid = 0, nt1, nt2, nttmp, nttest, ks1;
756 uint8_t par[1] = {0x00};
757 uint32_t target_nt[2] = {0x00}, target_ks[2] = {0x00};
758
759 uint8_t par_array[4] = {0x00};
760 uint16_t ncount = 0;
761 struct Crypto1State mpcs = {0, 0};
762 struct Crypto1State *pcs;
763 pcs = &mpcs;
764 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
765
766 uint32_t auth1_time, auth2_time;
767 static uint16_t delta_time = 0;
768
769 LED_A_ON();
770 LED_C_OFF();
771 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
772
773 // free eventually allocated BigBuf memory
774 BigBuf_free(); BigBuf_Clear_ext(false);
775
776 if (calibrate) clear_trace();
777 set_tracing(true);
778
779 // statistics on nonce distance
780 int16_t isOK = 0;
781 #define NESTED_MAX_TRIES 12
782 uint16_t unsuccessfull_tries = 0;
783 if (calibrate) { // for first call only. Otherwise reuse previous calibration
784 LED_B_ON();
785 WDT_HIT();
786
787 davg = dmax = 0;
788 dmin = 2000;
789 delta_time = 0;
790
791 for (rtr = 0; rtr < 17; rtr++) {
792
793 // Test if the action was cancelled
794 if(BUTTON_PRESS()) {
795 isOK = -2;
796 break;
797 }
798
799 // prepare next select. No need to power down the card.
800 if(mifare_classic_halt(pcs, cuid)) {
801 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Halt error");
802 rtr--;
803 continue;
804 }
805
806 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
807 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Can't select card");
808 rtr--;
809 continue;
810 };
811
812 auth1_time = 0;
813 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
814 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth1 error");
815 rtr--;
816 continue;
817 };
818 auth2_time = (delta_time) ? auth1_time + delta_time : 0;
819
820 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
821 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth2 error");
822 rtr--;
823 continue;
824 };
825
826 nttmp = prng_successor(nt1, 100); //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
827 for (i = 101; i < 1200; i++) {
828 nttmp = prng_successor(nttmp, 1);
829 if (nttmp == nt2) break;
830 }
831
832 if (i != 1200) {
833 if (rtr != 0) {
834 davg += i;
835 dmin = MIN(dmin, i);
836 dmax = MAX(dmax, i);
837 }
838 else {
839 delta_time = auth2_time - auth1_time + 32; // allow some slack for proper timing
840 }
841 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
842 } else {
843 unsuccessfull_tries++;
844 if (unsuccessfull_tries > NESTED_MAX_TRIES) { // card isn't vulnerable to nested attack (random numbers are not predictable)
845 isOK = -3;
846 }
847 }
848 }
849
850 davg = (davg + (rtr - 1)/2) / (rtr - 1);
851
852 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);
853
854 dmin = davg - 2;
855 dmax = davg + 2;
856
857 LED_B_OFF();
858 }
859 // -------------------------------------------------------------------------------------------------
860
861 LED_C_ON();
862
863 // get crypted nonces for target sector
864 for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
865
866 target_nt[i] = 0;
867 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
868
869 // prepare next select. No need to power down the card.
870 if(mifare_classic_halt(pcs, cuid)) {
871 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Halt error");
872 continue;
873 }
874
875 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
876 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Can't select card");
877 continue;
878 };
879
880 auth1_time = 0;
881 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
882 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth1 error");
883 continue;
884 };
885
886 // nested authentication
887 auth2_time = auth1_time + delta_time;
888
889 len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
890 if (len != 4) {
891 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth2 error len=%d", len);
892 continue;
893 };
894
895 nt2 = bytes_to_num(receivedAnswer, 4);
896 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
897
898 // Parity validity check
899 // for (j = 0; j < 4; j++) {
900 // par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
901 // }
902 par_array[0] = (oddparity8(receivedAnswer[0]) != ((par[0] >> (7-0)) & 0x01));
903 par_array[1] = (oddparity8(receivedAnswer[1]) != ((par[0] >> (7-1)) & 0x01));
904 par_array[2] = (oddparity8(receivedAnswer[2]) != ((par[0] >> (7-2)) & 0x01));
905 par_array[3] = (oddparity8(receivedAnswer[3]) != ((par[0] >> (7-3)) & 0x01));
906
907 ncount = 0;
908 nttest = prng_successor(nt1, dmin - 1);
909 for (j = dmin; j < dmax + 1; j++) {
910 nttest = prng_successor(nttest, 1);
911 ks1 = nt2 ^ nttest;
912
913 if (valid_nonce(nttest, nt2, ks1, par_array)){
914 if (ncount > 0) { // we are only interested in disambiguous nonces, try again
915 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
916 target_nt[i] = 0;
917 break;
918 }
919 target_nt[i] = nttest;
920 target_ks[i] = ks1;
921 ncount++;
922 if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
923 target_nt[i] = 0;
924 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
925 break;
926 }
927 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
928 }
929 }
930 if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
931 }
932 }
933
934 LED_C_OFF();
935
936 crypto1_destroy(pcs);
937
938 byte_t buf[4 + 4 * 4] = {0};
939 memcpy(buf, &cuid, 4);
940 memcpy(buf+4, &target_nt[0], 4);
941 memcpy(buf+8, &target_ks[0], 4);
942 memcpy(buf+12, &target_nt[1], 4);
943 memcpy(buf+16, &target_ks[1], 4);
944
945 LED_B_ON();
946 cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
947 LED_B_OFF();
948
949 if (MF_DBGLEVEL >= 3) DbpString("NESTED FINISHED");
950
951 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
952 LEDsoff();
953 set_tracing(FALSE);
954 }
955
956 //-----------------------------------------------------------------------------
957 // MIFARE check keys. key count up to 85.
958 //
959 //-----------------------------------------------------------------------------
960 void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain) {
961 uint8_t blockNo = arg0 & 0xff;
962 uint8_t keyType = (arg0 >> 8) & 0xff;
963 bool clearTrace = arg1;
964 uint8_t keyCount = arg2;
965 uint64_t ui64Key = 0;
966
967 bool have_uid = FALSE;
968 uint8_t cascade_levels = 0;
969 uint32_t timeout = 0;
970
971 int i;
972 byte_t isOK = 0;
973 uint8_t uid[10] = {0x00};
974 uint32_t cuid = 0;
975 struct Crypto1State mpcs = {0, 0};
976 struct Crypto1State *pcs;
977 pcs = &mpcs;
978
979 // save old debuglevel, and tempory turn off dbg printing. speedissues.
980 int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
981 MF_DBGLEVEL = MF_DBG_NONE;
982
983 LEDsoff();
984 LED_A_ON();
985
986 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
987
988 if (clearTrace)
989 clear_trace();
990
991 set_tracing(TRUE);
992
993 for (i = 0; i < keyCount; ++i) {
994
995 //mifare_classic_halt(pcs, cuid);
996
997 // this part is from Piwi's faster nonce collecting part in Hardnested.
998 if (!have_uid) { // need a full select cycle to get the uid first
999 iso14a_card_select_t card_info;
1000 if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0)) {
1001 if (MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Can't select card (ALL)");
1002 break;
1003 }
1004 switch (card_info.uidlen) {
1005 case 4 : cascade_levels = 1; break;
1006 case 7 : cascade_levels = 2; break;
1007 case 10: cascade_levels = 3; break;
1008 default: break;
1009 }
1010 have_uid = TRUE;
1011 } else { // no need for anticollision. We can directly select the card
1012 if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels)) {
1013 if (MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Can't select card (UID)");
1014 continue;
1015 }
1016 }
1017
1018 ui64Key = bytes_to_num(datain + i * 6, 6);
1019
1020 if (mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
1021
1022 uint8_t dummy_answer = 0;
1023 ReaderTransmit(&dummy_answer, 1, NULL);
1024 timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
1025
1026 // wait for the card to become ready again
1027 while(GetCountSspClk() < timeout);
1028
1029 continue;
1030 }
1031 isOK = 1;
1032 break;
1033 }
1034
1035 LED_B_ON();
1036 cmd_send(CMD_ACK, isOK, 0, 0, datain + i * 6, 6);
1037
1038 // restore debug level
1039 MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1040
1041 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1042 LEDsoff();
1043 set_tracing(FALSE);
1044 crypto1_destroy(pcs);
1045 }
1046
1047 //-----------------------------------------------------------------------------
1048 // MIFARE commands set debug level
1049 //
1050 //-----------------------------------------------------------------------------
1051 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1052 MF_DBGLEVEL = arg0;
1053 Dbprintf("Debug level: %d", MF_DBGLEVEL);
1054 }
1055
1056 //-----------------------------------------------------------------------------
1057 // Work with emulator memory
1058 //
1059 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1060 // involved in dealing with emulator memory. But if it is called later, it might
1061 // destroy the Emulator Memory.
1062 //-----------------------------------------------------------------------------
1063
1064 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1065 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1066 emlClearMem();
1067 }
1068
1069 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1070 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1071 if (arg2==0) arg2 = 16; // backwards compat... default bytewidth
1072 emlSetMem_xt(datain, arg0, arg1, arg2); // data, block num, blocks count, block byte width
1073 }
1074
1075 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1076 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1077 byte_t buf[USB_CMD_DATA_SIZE] = {0x00};
1078 emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1079
1080 LED_B_ON();
1081 cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1082 LED_B_OFF();
1083 }
1084
1085 //-----------------------------------------------------------------------------
1086 // Load a card into the emulator memory
1087 //
1088 //-----------------------------------------------------------------------------
1089 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1090 uint8_t numSectors = arg0;
1091 uint8_t keyType = arg1;
1092 uint64_t ui64Key = 0;
1093 uint32_t cuid = 0;
1094 struct Crypto1State mpcs = {0, 0};
1095 struct Crypto1State *pcs;
1096 pcs = &mpcs;
1097
1098 // variables
1099 byte_t dataoutbuf[16] = {0x00};
1100 byte_t dataoutbuf2[16] = {0x00};
1101 uint8_t uid[10] = {0x00};
1102
1103 LED_A_ON();
1104 LED_B_OFF();
1105 LED_C_OFF();
1106 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1107
1108 clear_trace();
1109 set_tracing(TRUE);
1110
1111 bool isOK = true;
1112
1113 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1114 isOK = false;
1115 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
1116 }
1117
1118 for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1119 ui64Key = emlGetKey(sectorNo, keyType);
1120 if (sectorNo == 0){
1121 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1122 isOK = false;
1123 if (MF_DBGLEVEL >= 1) Dbprintf("Sector[%2d]. Auth error", sectorNo);
1124 break;
1125 }
1126 } else {
1127 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1128 isOK = false;
1129 if (MF_DBGLEVEL >= 1) Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1130 break;
1131 }
1132 }
1133
1134 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1135 if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1136 isOK = false;
1137 if (MF_DBGLEVEL >= 1) Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1138 break;
1139 }
1140 if (isOK) {
1141 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1142 emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1143 } else { // sector trailer, keep the keys, set only the AC
1144 emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1145 memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1146 emlSetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1147 }
1148 }
1149 }
1150
1151 }
1152
1153 if(mifare_classic_halt(pcs, cuid))
1154 if (MF_DBGLEVEL >= 1)
1155 Dbprintf("Halt error");
1156
1157 // ----------------------------- crypto1 destroy
1158 crypto1_destroy(pcs);
1159
1160 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1161 LEDsoff();
1162
1163 if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1164
1165 set_tracing(FALSE);
1166 }
1167
1168
1169 //-----------------------------------------------------------------------------
1170 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1171 //
1172 // PARAMS - workFlags
1173 // bit 0 - need get UID
1174 // bit 1 - need wupC
1175 // bit 2 - need HALT after sequence
1176 // bit 3 - need turn on FPGA before sequence
1177 // bit 4 - need turn off FPGA
1178 // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1179 // bit 6 - wipe tag.
1180 //-----------------------------------------------------------------------------
1181 // magic uid card generation 1 commands
1182 uint8_t wupC1[] = { MIFARE_MAGICWUPC1 };
1183 uint8_t wupC2[] = { MIFARE_MAGICWUPC2 };
1184 uint8_t wipeC[] = { MIFARE_MAGICWIPEC };
1185
1186 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1187
1188 // params
1189 uint8_t workFlags = arg0;
1190 uint8_t blockNo = arg1;
1191
1192 // variables
1193 bool isOK = false; //assume we will get an error
1194 uint8_t errormsg = 0x00;
1195 uint8_t uid[10] = {0x00};
1196 uint8_t data[18] = {0x00};
1197 uint32_t cuid = 0;
1198
1199 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1200 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1201
1202 if (workFlags & MAGIC_INIT) {
1203 LED_A_ON();
1204 LED_B_OFF();
1205 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1206 clear_trace();
1207 set_tracing(TRUE);
1208 }
1209
1210 //loop doesn't loop just breaks out if error
1211 while (true) {
1212 // read UID and return to client with write
1213 if (workFlags & MAGIC_UID) {
1214 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1215 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1216 errormsg = MAGIC_UID;
1217 }
1218 mifare_classic_halt_ex(NULL);
1219 break;
1220 }
1221
1222 // wipe tag, fill it with zeros
1223 if (workFlags & MAGIC_WIPE){
1224 ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1225 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1226 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1227 errormsg = MAGIC_WIPE;
1228 break;
1229 }
1230
1231 ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1232 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1233 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wipeC error");
1234 errormsg = MAGIC_WIPE;
1235 break;
1236 }
1237
1238 mifare_classic_halt_ex(NULL);
1239 }
1240
1241 // write block
1242 if (workFlags & MAGIC_WUPC) {
1243 ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1244 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1245 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1246 errormsg = MAGIC_WUPC;
1247 break;
1248 }
1249
1250 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1251 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1252 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1253 errormsg = MAGIC_WUPC;
1254 break;
1255 }
1256 }
1257
1258 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1259 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send command error");
1260 errormsg = 4;
1261 break;
1262 }
1263
1264 memcpy(data, datain, 16);
1265 AppendCrc14443a(data, 16);
1266
1267 ReaderTransmit(data, sizeof(data), NULL);
1268 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1269 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send data error");
1270 errormsg = 0;
1271 break;
1272 }
1273
1274 if (workFlags & MAGIC_OFF)
1275 mifare_classic_halt_ex(NULL);
1276
1277 isOK = true;
1278 break;
1279
1280 } // end while
1281
1282 if (isOK )
1283 cmd_send(CMD_ACK,1,0,0,uid,sizeof(uid));
1284 else
1285 OnErrorMagic(errormsg);
1286
1287 if (workFlags & MAGIC_OFF)
1288 OnSuccessMagic();
1289 }
1290
1291 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1292
1293 uint8_t workFlags = arg0;
1294 uint8_t blockNo = arg1;
1295 uint8_t errormsg = 0x00;
1296 bool isOK = false; //assume we will get an error
1297
1298 // variables
1299 uint8_t data[MAX_MIFARE_FRAME_SIZE];
1300 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1301 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1302
1303 memset(data, 0x00, sizeof(data));
1304
1305 if (workFlags & MAGIC_INIT) {
1306 LED_A_ON();
1307 LED_B_OFF();
1308 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1309 clear_trace();
1310 set_tracing(TRUE);
1311 }
1312
1313 //loop doesn't loop just breaks out if error or done
1314 while (true) {
1315 if (workFlags & MAGIC_WUPC) {
1316 ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1317 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1318 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1319 errormsg = MAGIC_WUPC;
1320 break;
1321 }
1322
1323 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1324 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1325 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1326 errormsg = MAGIC_WUPC;
1327 break;
1328 }
1329 }
1330
1331 // read block
1332 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1333 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("read block send command error");
1334 errormsg = 0;
1335 break;
1336 }
1337
1338 memcpy(data, receivedAnswer, sizeof(data));
1339
1340 // send HALT
1341 if (workFlags & MAGIC_HALT)
1342 mifare_classic_halt_ex(NULL);
1343
1344 isOK = true;
1345 break;
1346 }
1347 // if MAGIC_DATAIN, the data stays on device side.
1348 if (workFlags & MAGIC_DATAIN) {
1349 if (isOK)
1350 memcpy(datain, data, sizeof(data));
1351 } else {
1352 if (isOK)
1353 cmd_send(CMD_ACK,1,0,0,data,sizeof(data));
1354 else
1355 OnErrorMagic(errormsg);
1356 }
1357
1358 if (workFlags & MAGIC_OFF)
1359 OnSuccessMagic();
1360 }
1361
1362 void MifareCIdent(){
1363
1364 // variables
1365 bool isOK = true;
1366 uint8_t receivedAnswer[1] = {0x00};
1367 uint8_t receivedAnswerPar[1] = {0x00};
1368
1369 ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1370 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1371 isOK = false;
1372 }
1373
1374 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1375 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1376 isOK = false;
1377 }
1378
1379 // removed the if, since some magic tags misbehavies and send an answer to it.
1380 mifare_classic_halt(NULL, 0);
1381 cmd_send(CMD_ACK,isOK,0,0,0,0);
1382 }
1383
1384 void OnSuccessMagic(){
1385 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1386 LEDsoff();
1387 set_tracing(FALSE);
1388 }
1389 void OnErrorMagic(uint8_t reason){
1390 // ACK, ISOK, reason,0,0,0
1391 cmd_send(CMD_ACK,0,reason,0,0,0);
1392 OnSuccessMagic();
1393 }
1394 //
1395 // DESFIRE
1396 //
1397 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1398 byte_t dataout[12] = {0x00};
1399 uint8_t uid[10] = {0x00};
1400 uint32_t cuid = 0;
1401
1402 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1403 clear_trace();
1404 set_tracing(true);
1405
1406 int len = iso14443a_select_card(uid, NULL, &cuid, true, 0);
1407 if(!len) {
1408 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1409 OnError(1);
1410 return;
1411 };
1412
1413 if(mifare_desfire_des_auth1(cuid, dataout)){
1414 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1415 OnError(4);
1416 return;
1417 }
1418
1419 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1420 cmd_send(CMD_ACK, 1, cuid, 0, dataout, sizeof(dataout));
1421 }
1422
1423 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1424 uint32_t cuid = arg0;
1425 uint8_t key[16] = {0x00};
1426 byte_t dataout[12] = {0x00};
1427 byte_t isOK = 0;
1428
1429 memcpy(key, datain, 16);
1430
1431 isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1432
1433 if( isOK) {
1434 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1435 OnError(4);
1436 return;
1437 }
1438
1439 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1440
1441 cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1442 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1443 LEDsoff();
1444 set_tracing(FALSE);
1445 }
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