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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
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 = 0;
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 auth2_time = (delta_time) ? auth1_time + delta_time : 0;
826
827 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
828 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth2 error");
829 rtr--;
830 continue;
831 };
832
833 nttmp = prng_successor(nt1, 100); //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
834 for (i = 101; i < 1200; i++) {
835 nttmp = prng_successor_one(nttmp);
836 if (nttmp == nt2) break;
837 }
838
839 if (i != 1200) {
840 if (rtr != 0) {
841 davg += i;
842 dmin = MIN(dmin, i);
843 dmax = MAX(dmax, i);
844 }
845 else {
846 delta_time = auth2_time - auth1_time + 32; // allow some slack for proper timing
847 }
848 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
849 } else {
850 unsuccessfull_tries++;
851 if (unsuccessfull_tries > NESTED_MAX_TRIES) { // card isn't vulnerable to nested attack (random numbers are not predictable)
852 isOK = -3;
853 }
854 }
855 }
856
857 davg = (davg + (rtr - 1)/2) / (rtr - 1);
858
859 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);
860
861 dmin = davg - 2;
862 dmax = davg + 2;
863
864 LED_B_OFF();
865 }
866 // -------------------------------------------------------------------------------------------------
867
868 LED_C_ON();
869
870 // get crypted nonces for target sector
871 for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
872
873 target_nt[i] = 0;
874 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
875
876 // prepare next select. No need to power down the card.
877 if(mifare_classic_halt(pcs, cuid)) {
878 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Halt error");
879 continue;
880 }
881
882 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
883 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Can't select card");
884 continue;
885 };
886
887 auth1_time = 0;
888 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
889 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth1 error");
890 continue;
891 };
892
893 // nested authentication
894 auth2_time = auth1_time + delta_time;
895
896 len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
897 if (len != 4) {
898 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth2 error len=%d", len);
899 continue;
900 };
901
902 nt2 = bytes_to_num(receivedAnswer, 4);
903 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
904
905 // Parity validity check
906 // for (j = 0; j < 4; j++) {
907 // par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
908 // }
909 par_array[0] = (oddparity8(receivedAnswer[0]) != ((par[0] >> (7-0)) & 0x01));
910 par_array[1] = (oddparity8(receivedAnswer[1]) != ((par[0] >> (7-1)) & 0x01));
911 par_array[2] = (oddparity8(receivedAnswer[2]) != ((par[0] >> (7-2)) & 0x01));
912 par_array[3] = (oddparity8(receivedAnswer[3]) != ((par[0] >> (7-3)) & 0x01));
913
914 ncount = 0;
915 nttest = prng_successor(nt1, dmin - 1);
916 for (j = dmin; j < dmax + 1; j++) {
917 nttest = prng_successor_one(nttest);
918 ks1 = nt2 ^ nttest;
919
920 if (valid_nonce(nttest, nt2, ks1, par_array)){
921 if (ncount > 0) { // we are only interested in disambiguous nonces, try again
922 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
923 target_nt[i] = 0;
924 break;
925 }
926 target_nt[i] = nttest;
927 target_ks[i] = ks1;
928 ncount++;
929 if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
930 target_nt[i] = 0;
931 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
932 break;
933 }
934 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
935 }
936 }
937 if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
938 }
939 }
940
941 LED_C_OFF();
942
943 // ----------------------------- crypto1 destroy
944 crypto1_destroy(pcs);
945
946 byte_t buf[4 + 4 * 4] = {0};
947 memcpy(buf, &cuid, 4);
948 memcpy(buf+4, &target_nt[0], 4);
949 memcpy(buf+8, &target_ks[0], 4);
950 memcpy(buf+12, &target_nt[1], 4);
951 memcpy(buf+16, &target_ks[1], 4);
952
953 LED_B_ON();
954 cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
955 LED_B_OFF();
956
957 if (MF_DBGLEVEL >= 3) DbpString("NESTED FINISHED");
958
959 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
960 LEDsoff();
961 set_tracing(FALSE);
962 }
963
964 //-----------------------------------------------------------------------------
965 // MIFARE check keys. key count up to 85.
966 //
967 //-----------------------------------------------------------------------------
968 void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
969 {
970 // params
971 uint8_t blockNo = arg0 & 0xff;
972 uint8_t keyType = (arg0 >> 8) & 0xff;
973 bool clearTrace = arg1;
974 uint8_t keyCount = arg2;
975 uint64_t ui64Key = 0;
976
977 // variables
978 int i;
979 byte_t isOK = 0;
980 uint8_t uid[10] = {0x00};
981 uint32_t cuid = 0;
982 struct Crypto1State mpcs = {0, 0};
983 struct Crypto1State *pcs;
984 pcs = &mpcs;
985
986 // clear debug level
987 int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
988 MF_DBGLEVEL = MF_DBG_NONE;
989
990 LEDsoff();
991 LED_A_ON();
992
993 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
994
995 if (clearTrace)
996 clear_trace();
997
998 set_tracing(TRUE);
999
1000 for (i = 0; i < keyCount; ++i) {
1001
1002 if (!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1003 if (OLD_MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Can't select card");
1004 break;
1005 }
1006
1007 ui64Key = bytes_to_num(datain + i * 6, 6);
1008 if (mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
1009 if (mifare_classic_halt(pcs, cuid))
1010 if (MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Halt error");
1011 continue;
1012 }
1013
1014 isOK = 1;
1015 break;
1016 }
1017
1018 LED_B_ON();
1019 cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
1020
1021 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1022 LEDsoff();
1023 set_tracing(FALSE);
1024 crypto1_destroy(pcs);
1025
1026 // restore debug level
1027 MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1028 }
1029
1030 //-----------------------------------------------------------------------------
1031 // MIFARE commands set debug level
1032 //
1033 //-----------------------------------------------------------------------------
1034 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1035 MF_DBGLEVEL = arg0;
1036 Dbprintf("Debug level: %d", MF_DBGLEVEL);
1037 }
1038
1039 //-----------------------------------------------------------------------------
1040 // Work with emulator memory
1041 //
1042 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1043 // involved in dealing with emulator memory. But if it is called later, it might
1044 // destroy the Emulator Memory.
1045 //-----------------------------------------------------------------------------
1046
1047 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1048 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1049 emlClearMem();
1050 }
1051
1052 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1053 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1054 if (arg2==0) arg2 = 16; // backwards compat... default bytewidth
1055 emlSetMem_xt(datain, arg0, arg1, arg2); // data, block num, blocks count, block byte width
1056 }
1057
1058 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1059 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1060 byte_t buf[USB_CMD_DATA_SIZE] = {0x00};
1061 emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1062
1063 LED_B_ON();
1064 cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1065 LED_B_OFF();
1066 }
1067
1068 //-----------------------------------------------------------------------------
1069 // Load a card into the emulator memory
1070 //
1071 //-----------------------------------------------------------------------------
1072 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1073 uint8_t numSectors = arg0;
1074 uint8_t keyType = arg1;
1075 uint64_t ui64Key = 0;
1076 uint32_t cuid = 0;
1077 struct Crypto1State mpcs = {0, 0};
1078 struct Crypto1State *pcs;
1079 pcs = &mpcs;
1080
1081 // variables
1082 byte_t dataoutbuf[16] = {0x00};
1083 byte_t dataoutbuf2[16] = {0x00};
1084 uint8_t uid[10] = {0x00};
1085
1086 LED_A_ON();
1087 LED_B_OFF();
1088 LED_C_OFF();
1089 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1090
1091 clear_trace();
1092 set_tracing(TRUE);
1093
1094 bool isOK = true;
1095
1096 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1097 isOK = false;
1098 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
1099 }
1100
1101 for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1102 ui64Key = emlGetKey(sectorNo, keyType);
1103 if (sectorNo == 0){
1104 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1105 isOK = false;
1106 if (MF_DBGLEVEL >= 1) Dbprintf("Sector[%2d]. Auth error", sectorNo);
1107 break;
1108 }
1109 } else {
1110 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1111 isOK = false;
1112 if (MF_DBGLEVEL >= 1) Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1113 break;
1114 }
1115 }
1116
1117 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1118 if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1119 isOK = false;
1120 if (MF_DBGLEVEL >= 1) Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1121 break;
1122 }
1123 if (isOK) {
1124 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1125 emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1126 } else { // sector trailer, keep the keys, set only the AC
1127 emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1128 memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1129 emlSetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1130 }
1131 }
1132 }
1133
1134 }
1135
1136 if(mifare_classic_halt(pcs, cuid))
1137 if (MF_DBGLEVEL >= 1)
1138 Dbprintf("Halt error");
1139
1140 // ----------------------------- crypto1 destroy
1141 crypto1_destroy(pcs);
1142
1143 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1144 LEDsoff();
1145
1146 if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1147
1148 set_tracing(FALSE);
1149 }
1150
1151
1152 //-----------------------------------------------------------------------------
1153 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1154 //
1155 // PARAMS - workFlags
1156 // bit 0 - need get UID
1157 // bit 1 - need wupC
1158 // bit 2 - need HALT after sequence
1159 // bit 3 - need turn on FPGA before sequence
1160 // bit 4 - need turn off FPGA
1161 // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1162 // bit 6 - wipe tag.
1163 //-----------------------------------------------------------------------------
1164 // magic uid card generation 1 commands
1165 uint8_t wupC1[] = { MIFARE_MAGICWUPC1 };
1166 uint8_t wupC2[] = { MIFARE_MAGICWUPC2 };
1167 uint8_t wipeC[] = { MIFARE_MAGICWIPEC };
1168
1169 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1170
1171 // params
1172 uint8_t workFlags = arg0;
1173 uint8_t blockNo = arg1;
1174
1175 // variables
1176 bool isOK = false; //assume we will get an error
1177 uint8_t errormsg = 0x00;
1178 uint8_t uid[10] = {0x00};
1179 uint8_t data[18] = {0x00};
1180 uint32_t cuid = 0;
1181
1182 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1183 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1184
1185 if (workFlags & MAGIC_INIT) {
1186 LED_A_ON();
1187 LED_B_OFF();
1188 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1189 clear_trace();
1190 set_tracing(TRUE);
1191 }
1192
1193 //loop doesn't loop just breaks out if error
1194 while (true) {
1195 // read UID and return to client with write
1196 if (workFlags & MAGIC_UID) {
1197 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1198 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1199 errormsg = MAGIC_UID;
1200 // break;
1201 }
1202
1203 if ( mifare_classic_halt_ex(NULL) ) break;
1204 }
1205
1206 // wipe tag, fill it with zeros
1207 if (workFlags & MAGIC_WIPE){
1208 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1209 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1210 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1211 errormsg = MAGIC_WIPE;
1212 break;
1213 }
1214
1215 ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1216 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1217 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wipeC error");
1218 errormsg = MAGIC_WIPE;
1219 break;
1220 }
1221
1222 if ( mifare_classic_halt_ex(NULL) ) break;
1223 }
1224
1225 // write block
1226 if (workFlags & MAGIC_WUPC) {
1227 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1228 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1229 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1230 errormsg = MAGIC_WUPC;
1231 break;
1232 }
1233
1234 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1235 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1236 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1237 errormsg = MAGIC_WUPC;
1238 break;
1239 }
1240 }
1241
1242 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1243 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send command error");
1244 errormsg = 4;
1245 break;
1246 }
1247
1248 memcpy(data, datain, 16);
1249 AppendCrc14443a(data, 16);
1250
1251 ReaderTransmit(data, sizeof(data), NULL);
1252 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1253 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send data error");
1254 errormsg = 0;
1255 break;
1256 }
1257
1258 if (workFlags & MAGIC_OFF)
1259 if ( mifare_classic_halt_ex(NULL) ) break;
1260
1261 isOK = true;
1262 break;
1263
1264 } // end while
1265
1266 if (isOK )
1267 cmd_send(CMD_ACK,1,0,0,uid,sizeof(uid));
1268 else
1269 OnErrorMagic(errormsg);
1270
1271 if (workFlags & MAGIC_OFF)
1272 OnSuccessMagic();
1273 }
1274
1275 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1276
1277 uint8_t workFlags = arg0;
1278 uint8_t blockNo = arg1;
1279 uint8_t errormsg = 0x00;
1280 bool isOK = false; //assume we will get an error
1281
1282 // variables
1283 uint8_t data[MAX_MIFARE_FRAME_SIZE];
1284 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1285 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1286
1287 memset(data, 0x00, sizeof(data));
1288
1289 if (workFlags & MAGIC_INIT) {
1290 LED_A_ON();
1291 LED_B_OFF();
1292 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1293 clear_trace();
1294 set_tracing(TRUE);
1295 }
1296
1297 //loop doesn't loop just breaks out if error or done
1298 while (true) {
1299 if (workFlags & MAGIC_WUPC) {
1300 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1301 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1302 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1303 errormsg = MAGIC_WUPC;
1304 break;
1305 }
1306
1307 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1308 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1309 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1310 errormsg = MAGIC_WUPC;
1311 break;
1312 }
1313 }
1314
1315 // read block
1316 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1317 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("read block send command error");
1318 errormsg = 0;
1319 break;
1320 }
1321
1322 memcpy(data, receivedAnswer, sizeof(data));
1323
1324 // send HALT
1325 if (workFlags & MAGIC_HALT)
1326 mifare_classic_halt_ex(NULL);
1327
1328 isOK = true;
1329 break;
1330 }
1331 // if MAGIC_DATAIN, the data stays on device side.
1332 if (workFlags & MAGIC_DATAIN) {
1333 if (isOK)
1334 memcpy(datain, data, sizeof(data));
1335 } else {
1336 if (isOK)
1337 cmd_send(CMD_ACK,1,0,0,data,sizeof(data));
1338 else
1339 OnErrorMagic(errormsg);
1340 }
1341
1342 if (workFlags & MAGIC_OFF)
1343 OnSuccessMagic();
1344 }
1345
1346 void MifareCIdent(){
1347
1348 // variables
1349 bool isOK = true;
1350 uint8_t receivedAnswer[1] = {0x00};
1351 uint8_t receivedAnswerPar[1] = {0x00};
1352
1353 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1354 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1355 isOK = false;
1356 }
1357
1358 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1359 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1360 isOK = false;
1361 }
1362
1363 // removed the if, since some magic tags misbehavies and send an answer to it.
1364 mifare_classic_halt(NULL, 0);
1365 cmd_send(CMD_ACK,isOK,0,0,0,0);
1366 }
1367
1368 void OnSuccessMagic(){
1369 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1370 LEDsoff();
1371 set_tracing(FALSE);
1372 }
1373 void OnErrorMagic(uint8_t reason){
1374 // ACK, ISOK, reason,0,0,0
1375 cmd_send(CMD_ACK,0,reason,0,0,0);
1376 OnSuccessMagic();
1377 }
1378
1379 void MifareCollectNonces(uint32_t arg0, uint32_t arg1){
1380 }
1381
1382 //
1383 // DESFIRE
1384 //
1385
1386 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1387
1388 byte_t dataout[12] = {0x00};
1389 uint8_t uid[10] = {0x00};
1390 uint32_t cuid = 0;
1391
1392 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1393 clear_trace();
1394 set_tracing(true);
1395
1396 int len = iso14443a_select_card(uid, NULL, &cuid, true, 0);
1397 if(!len) {
1398 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1399 OnError(1);
1400 return;
1401 };
1402
1403 if(mifare_desfire_des_auth1(cuid, dataout)){
1404 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1405 OnError(4);
1406 return;
1407 }
1408
1409 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1410 cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1411 }
1412
1413 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1414
1415 uint32_t cuid = arg0;
1416 uint8_t key[16] = {0x00};
1417 byte_t dataout[12] = {0x00};
1418 byte_t isOK = 0;
1419
1420 memcpy(key, datain, 16);
1421
1422 isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1423
1424 if( isOK) {
1425 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1426 OnError(4);
1427 return;
1428 }
1429
1430 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1431
1432 cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1433 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1434 LEDsoff();
1435 }
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