]> git.zerfleddert.de Git - proxmark3-svn/blob - armsrc/mifarecmd.c
Merge pull request #16 from alexgrin/iceman_master
[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
407 crypto1_destroy(pcs);
408
409 if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
410
411 LED_B_ON();
412 cmd_send(CMD_ACK,isOK,0,0,0,0);
413 LED_B_OFF();
414
415 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
416 LEDsoff();
417 set_tracing(FALSE);
418 }
419
420 /* // Command not needed but left for future testing
421 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
422 {
423 uint8_t blockNo = arg0;
424 byte_t blockdata[16] = {0x00};
425
426 memcpy(blockdata, datain, 16);
427
428 uint8_t uid[10] = {0x00};
429
430 LED_A_ON(); LED_B_OFF(); LED_C_OFF();
431
432 clear_trace();
433 set_tracing(true);
434 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
435
436 if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {
437 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
438 OnError(0);
439 return;
440 };
441
442 if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
443 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
444 OnError(0);
445 return; };
446
447 if(mifare_ultra_halt()) {
448 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
449 OnError(0);
450 return;
451 };
452
453 if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
454
455 cmd_send(CMD_ACK,1,0,0,0,0);
456 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
457 LEDsoff();
458 }
459 */
460
461 // Arg0 : Block to write to.
462 // Arg1 : 0 = use no authentication.
463 // 1 = use 0x1A authentication.
464 // 2 = use 0x1B authentication.
465 // datain : 4 first bytes is data to be written.
466 // : 4/16 next bytes is authentication key.
467 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
468 {
469 uint8_t blockNo = arg0;
470 bool useKey = (arg1 == 1); //UL_C
471 bool usePwd = (arg1 == 2); //UL_EV1/NTAG
472 byte_t blockdata[4] = {0x00};
473
474 memcpy(blockdata, datain,4);
475
476 LEDsoff();
477 LED_A_ON();
478 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
479
480 clear_trace();
481 set_tracing(true);
482
483 if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
484 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
485 OnError(0);
486 return;
487 };
488
489 // UL-C authentication
490 if ( useKey ) {
491 uint8_t key[16] = {0x00};
492 memcpy(key, datain+4, sizeof(key) );
493
494 if ( !mifare_ultra_auth(key) ) {
495 OnError(1);
496 return;
497 }
498 }
499
500 // UL-EV1 / NTAG authentication
501 if (usePwd) {
502 uint8_t pwd[4] = {0x00};
503 memcpy(pwd, datain+4, 4);
504 uint8_t pack[4] = {0,0,0,0};
505 if (!mifare_ul_ev1_auth(pwd, pack)) {
506 OnError(1);
507 return;
508 }
509 }
510
511 if(mifare_ultra_writeblock(blockNo, blockdata)) {
512 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
513 OnError(0);
514 return;
515 };
516
517 if(mifare_ultra_halt()) {
518 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
519 OnError(0);
520 return;
521 };
522
523 if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
524
525 cmd_send(CMD_ACK,1,0,0,0,0);
526 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
527 LEDsoff();
528 set_tracing(FALSE);
529 }
530
531 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
532
533 uint8_t pwd[16] = {0x00};
534 byte_t blockdata[4] = {0x00};
535
536 memcpy(pwd, datain, 16);
537
538 LED_A_ON(); LED_B_OFF(); LED_C_OFF();
539 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
540
541 clear_trace();
542 set_tracing(true);
543
544 if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
545 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
546 OnError(0);
547 return;
548 };
549
550 blockdata[0] = pwd[7];
551 blockdata[1] = pwd[6];
552 blockdata[2] = pwd[5];
553 blockdata[3] = pwd[4];
554 if(mifare_ultra_writeblock( 44, blockdata)) {
555 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
556 OnError(44);
557 return;
558 };
559
560 blockdata[0] = pwd[3];
561 blockdata[1] = pwd[2];
562 blockdata[2] = pwd[1];
563 blockdata[3] = pwd[0];
564 if(mifare_ultra_writeblock( 45, blockdata)) {
565 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
566 OnError(45);
567 return;
568 };
569
570 blockdata[0] = pwd[15];
571 blockdata[1] = pwd[14];
572 blockdata[2] = pwd[13];
573 blockdata[3] = pwd[12];
574 if(mifare_ultra_writeblock( 46, blockdata)) {
575 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
576 OnError(46);
577 return;
578 };
579
580 blockdata[0] = pwd[11];
581 blockdata[1] = pwd[10];
582 blockdata[2] = pwd[9];
583 blockdata[3] = pwd[8];
584 if(mifare_ultra_writeblock( 47, blockdata)) {
585 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
586 OnError(47);
587 return;
588 };
589
590 if(mifare_ultra_halt()) {
591 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
592 OnError(0);
593 return;
594 };
595
596 cmd_send(CMD_ACK,1,0,0,0,0);
597 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
598 LEDsoff();
599 set_tracing(FALSE);
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 #define AUTHENTICATION_TIMEOUT 848 // card times out 1ms after wrong authentication (according to NXP documentation)
617 #define PRE_AUTHENTICATION_LEADTIME 400 // some (non standard) cards need a pause after select before they are ready for first authentication
618
619 void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain)
620 {
621 uint64_t ui64Key = 0;
622 uint8_t uid[10] = {0x00};
623 uint32_t cuid = 0;
624 uint8_t cascade_levels = 0;
625 struct Crypto1State mpcs = {0, 0};
626 struct Crypto1State *pcs;
627 pcs = &mpcs;
628 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
629 int16_t isOK = 0;
630 uint8_t par_enc[1] = {0x00};
631 uint8_t nt_par_enc = 0;
632 uint8_t buf[USB_CMD_DATA_SIZE] = {0x00};
633 uint32_t timeout = 0;
634
635 uint8_t blockNo = arg0 & 0xff;
636 uint8_t keyType = (arg0 >> 8) & 0xff;
637 uint8_t targetBlockNo = arg1 & 0xff;
638 uint8_t targetKeyType = (arg1 >> 8) & 0xff;
639 ui64Key = bytes_to_num(datain, 6);
640 bool initialize = flags & 0x0001;
641 bool slow = flags & 0x0002;
642 bool field_off = flags & 0x0004;
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 // wait for the card to become ready again
720 while(GetCountSspClk() < timeout);
721 }
722
723 LED_C_OFF();
724
725 crypto1_destroy(pcs);
726
727 LED_B_ON();
728 cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
729 LED_B_OFF();
730
731 if (MF_DBGLEVEL >= 3) DbpString("AcquireEncryptedNonces finished");
732
733 if (field_off) {
734 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
735 LEDsoff();
736 set_tracing(FALSE);
737 }
738 }
739
740
741 //-----------------------------------------------------------------------------
742 // MIFARE nested authentication.
743 //
744 //-----------------------------------------------------------------------------
745 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
746 {
747 // params
748 uint8_t blockNo = arg0 & 0xff;
749 uint8_t keyType = (arg0 >> 8) & 0xff;
750 uint8_t targetBlockNo = arg1 & 0xff;
751 uint8_t targetKeyType = (arg1 >> 8) & 0xff;
752 uint64_t ui64Key = 0;
753
754 ui64Key = bytes_to_num(datain, 6);
755
756 // variables
757 uint16_t rtr, i, j, len;
758 uint16_t davg = 0;
759 static uint16_t dmin, dmax;
760 uint8_t uid[10] = {0x00};
761 uint32_t cuid = 0, nt1, nt2, nttmp, nttest, ks1;
762 uint8_t par[1] = {0x00};
763 uint32_t target_nt[2] = {0x00}, target_ks[2] = {0x00};
764
765 uint8_t par_array[4] = {0x00};
766 uint16_t ncount = 0;
767 struct Crypto1State mpcs = {0, 0};
768 struct Crypto1State *pcs;
769 pcs = &mpcs;
770 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
771
772 uint32_t auth1_time, auth2_time;
773 static uint16_t delta_time = 0;
774
775 LED_A_ON();
776 LED_C_OFF();
777 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
778
779 // free eventually allocated BigBuf memory
780 BigBuf_free(); BigBuf_Clear_ext(false);
781
782 if (calibrate) clear_trace();
783 set_tracing(true);
784
785 // statistics on nonce distance
786 int16_t isOK = 0;
787 #define NESTED_MAX_TRIES 12
788 uint16_t unsuccessfull_tries = 0;
789 if (calibrate) { // for first call only. Otherwise reuse previous calibration
790 LED_B_ON();
791 WDT_HIT();
792
793 davg = dmax = 0;
794 dmin = 2000;
795 delta_time = 0;
796
797 for (rtr = 0; rtr < 17; rtr++) {
798
799 // Test if the action was cancelled
800 if(BUTTON_PRESS()) {
801 isOK = -2;
802 break;
803 }
804
805 // prepare next select. No need to power down the card.
806 if(mifare_classic_halt(pcs, cuid)) {
807 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Halt error");
808 rtr--;
809 continue;
810 }
811
812 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
813 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Can't select card");
814 rtr--;
815 continue;
816 };
817
818 auth1_time = 0;
819 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
820 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth1 error");
821 rtr--;
822 continue;
823 };
824 auth2_time = (delta_time) ? auth1_time + delta_time : 0;
825
826 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
827 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth2 error");
828 rtr--;
829 continue;
830 };
831
832 nttmp = prng_successor(nt1, 100); //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
833 for (i = 101; i < 1200; i++) {
834 nttmp = prng_successor(nttmp, 1);
835 if (nttmp == nt2) break;
836 }
837
838 if (i != 1200) {
839 if (rtr != 0) {
840 davg += i;
841 dmin = MIN(dmin, i);
842 dmax = MAX(dmax, i);
843 }
844 else {
845 delta_time = auth2_time - auth1_time + 32; // allow some slack for proper timing
846 }
847 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
848 } else {
849 unsuccessfull_tries++;
850 if (unsuccessfull_tries > NESTED_MAX_TRIES) { // card isn't vulnerable to nested attack (random numbers are not predictable)
851 isOK = -3;
852 }
853 }
854 }
855
856 davg = (davg + (rtr - 1)/2) / (rtr - 1);
857
858 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);
859
860 dmin = davg - 2;
861 dmax = davg + 2;
862
863 LED_B_OFF();
864 }
865 // -------------------------------------------------------------------------------------------------
866
867 LED_C_ON();
868
869 // get crypted nonces for target sector
870 for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
871
872 target_nt[i] = 0;
873 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
874
875 // prepare next select. No need to power down the card.
876 if(mifare_classic_halt(pcs, cuid)) {
877 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Halt error");
878 continue;
879 }
880
881 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
882 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Can't select card");
883 continue;
884 };
885
886 auth1_time = 0;
887 if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
888 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth1 error");
889 continue;
890 };
891
892 // nested authentication
893 auth2_time = auth1_time + delta_time;
894
895 len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
896 if (len != 4) {
897 if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Auth2 error len=%d", len);
898 continue;
899 };
900
901 nt2 = bytes_to_num(receivedAnswer, 4);
902 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
903
904 // Parity validity check
905 // for (j = 0; j < 4; j++) {
906 // par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
907 // }
908 par_array[0] = (oddparity8(receivedAnswer[0]) != ((par[0] >> (7-0)) & 0x01));
909 par_array[1] = (oddparity8(receivedAnswer[1]) != ((par[0] >> (7-1)) & 0x01));
910 par_array[2] = (oddparity8(receivedAnswer[2]) != ((par[0] >> (7-2)) & 0x01));
911 par_array[3] = (oddparity8(receivedAnswer[3]) != ((par[0] >> (7-3)) & 0x01));
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(pcs);
943
944 byte_t buf[4 + 4 * 4] = {0};
945 memcpy(buf, &cuid, 4);
946 memcpy(buf+4, &target_nt[0], 4);
947 memcpy(buf+8, &target_ks[0], 4);
948 memcpy(buf+12, &target_nt[1], 4);
949 memcpy(buf+16, &target_ks[1], 4);
950
951 LED_B_ON();
952 cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
953 LED_B_OFF();
954
955 if (MF_DBGLEVEL >= 3) DbpString("NESTED FINISHED");
956
957 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
958 LEDsoff();
959 set_tracing(FALSE);
960 }
961
962 //-----------------------------------------------------------------------------
963 // MIFARE check keys. key count up to 85.
964 //
965 //-----------------------------------------------------------------------------
966 void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain) {
967 uint8_t blockNo = arg0 & 0xff;
968 uint8_t keyType = (arg0 >> 8) & 0xff;
969 bool clearTrace = arg1;
970 uint8_t keyCount = arg2;
971 uint64_t ui64Key = 0;
972
973 bool have_uid = FALSE;
974 uint8_t cascade_levels = 0;
975 uint32_t timeout = 0;
976
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 // save old debuglevel, and tempory turn off dbg printing. speedissues.
986 int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
987 MF_DBGLEVEL = MF_DBG_NONE;
988
989 LEDsoff();
990 LED_A_ON();
991
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
1001 //mifare_classic_halt(pcs, cuid);
1002
1003 // this part is from Piwi's faster nonce collecting part in Hardnested.
1004 if (!have_uid) { // need a full select cycle to get the uid first
1005 iso14a_card_select_t card_info;
1006 if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0)) {
1007 if (MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Can't select card (ALL)");
1008 break;
1009 }
1010 switch (card_info.uidlen) {
1011 case 4 : cascade_levels = 1; break;
1012 case 7 : cascade_levels = 2; break;
1013 case 10: cascade_levels = 3; break;
1014 default: break;
1015 }
1016 have_uid = TRUE;
1017 } else { // no need for anticollision. We can directly select the card
1018 if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels)) {
1019 if (MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Can't select card (UID)");
1020 continue;
1021 }
1022 }
1023
1024 ui64Key = bytes_to_num(datain + i * 6, 6);
1025
1026 if (mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
1027
1028 uint8_t dummy_answer = 0;
1029 ReaderTransmit(&dummy_answer, 1, NULL);
1030 timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
1031
1032 // wait for the card to become ready again
1033 while(GetCountSspClk() < timeout);
1034
1035 continue;
1036 }
1037 isOK = 1;
1038 break;
1039 }
1040
1041 LED_B_ON();
1042 cmd_send(CMD_ACK, isOK, 0, 0, datain + i * 6, 6);
1043
1044 // restore debug level
1045 MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1046
1047 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1048 LEDsoff();
1049 set_tracing(FALSE);
1050 crypto1_destroy(pcs);
1051 }
1052
1053 //-----------------------------------------------------------------------------
1054 // MIFARE commands set debug level
1055 //
1056 //-----------------------------------------------------------------------------
1057 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1058 MF_DBGLEVEL = arg0;
1059 Dbprintf("Debug level: %d", MF_DBGLEVEL);
1060 }
1061
1062 //-----------------------------------------------------------------------------
1063 // Work with emulator memory
1064 //
1065 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1066 // involved in dealing with emulator memory. But if it is called later, it might
1067 // destroy the Emulator Memory.
1068 //-----------------------------------------------------------------------------
1069
1070 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1071 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1072 emlClearMem();
1073 }
1074
1075 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1076 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1077 if (arg2==0) arg2 = 16; // backwards compat... default bytewidth
1078 emlSetMem_xt(datain, arg0, arg1, arg2); // data, block num, blocks count, block byte width
1079 }
1080
1081 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1082 FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1083 byte_t buf[USB_CMD_DATA_SIZE] = {0x00};
1084 emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1085
1086 LED_B_ON();
1087 cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1088 LED_B_OFF();
1089 }
1090
1091 //-----------------------------------------------------------------------------
1092 // Load a card into the emulator memory
1093 //
1094 //-----------------------------------------------------------------------------
1095 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1096 uint8_t numSectors = arg0;
1097 uint8_t keyType = arg1;
1098 uint64_t ui64Key = 0;
1099 uint32_t cuid = 0;
1100 struct Crypto1State mpcs = {0, 0};
1101 struct Crypto1State *pcs;
1102 pcs = &mpcs;
1103
1104 // variables
1105 byte_t dataoutbuf[16] = {0x00};
1106 byte_t dataoutbuf2[16] = {0x00};
1107 uint8_t uid[10] = {0x00};
1108
1109 LED_A_ON();
1110 LED_B_OFF();
1111 LED_C_OFF();
1112 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1113
1114 clear_trace();
1115 set_tracing(TRUE);
1116
1117 bool isOK = true;
1118
1119 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1120 isOK = false;
1121 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
1122 }
1123
1124 for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1125 ui64Key = emlGetKey(sectorNo, keyType);
1126 if (sectorNo == 0){
1127 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1128 isOK = false;
1129 if (MF_DBGLEVEL >= 1) Dbprintf("Sector[%2d]. Auth error", sectorNo);
1130 break;
1131 }
1132 } else {
1133 if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1134 isOK = false;
1135 if (MF_DBGLEVEL >= 1) Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1136 break;
1137 }
1138 }
1139
1140 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1141 if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1142 isOK = false;
1143 if (MF_DBGLEVEL >= 1) Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1144 break;
1145 }
1146 if (isOK) {
1147 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1148 emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1149 } else { // sector trailer, keep the keys, set only the AC
1150 emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1151 memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1152 emlSetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1153 }
1154 }
1155 }
1156
1157 }
1158
1159 if(mifare_classic_halt(pcs, cuid))
1160 if (MF_DBGLEVEL >= 1)
1161 Dbprintf("Halt error");
1162
1163 // ----------------------------- crypto1 destroy
1164 crypto1_destroy(pcs);
1165
1166 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1167 LEDsoff();
1168
1169 if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1170
1171 set_tracing(FALSE);
1172 }
1173
1174
1175 //-----------------------------------------------------------------------------
1176 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1177 //
1178 // PARAMS - workFlags
1179 // bit 0 - need get UID
1180 // bit 1 - need wupC
1181 // bit 2 - need HALT after sequence
1182 // bit 3 - need turn on FPGA before sequence
1183 // bit 4 - need turn off FPGA
1184 // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1185 // bit 6 - wipe tag.
1186 //-----------------------------------------------------------------------------
1187 // magic uid card generation 1 commands
1188 uint8_t wupC1[] = { MIFARE_MAGICWUPC1 };
1189 uint8_t wupC2[] = { MIFARE_MAGICWUPC2 };
1190 uint8_t wipeC[] = { MIFARE_MAGICWIPEC };
1191
1192 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1193
1194 // params
1195 uint8_t workFlags = arg0;
1196 uint8_t blockNo = arg1;
1197
1198 // variables
1199 bool isOK = false; //assume we will get an error
1200 uint8_t errormsg = 0x00;
1201 uint8_t uid[10] = {0x00};
1202 uint8_t data[18] = {0x00};
1203 uint32_t cuid = 0;
1204
1205 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1206 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1207
1208 if (workFlags & MAGIC_INIT) {
1209 LED_A_ON();
1210 LED_B_OFF();
1211 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1212 clear_trace();
1213 set_tracing(TRUE);
1214 }
1215
1216 //loop doesn't loop just breaks out if error
1217 while (true) {
1218 // read UID and return to client with write
1219 if (workFlags & MAGIC_UID) {
1220 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1221 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1222 errormsg = MAGIC_UID;
1223 // break;
1224 }
1225
1226 if ( mifare_classic_halt_ex(NULL) ) break;
1227 }
1228
1229 // wipe tag, fill it with zeros
1230 if (workFlags & MAGIC_WIPE){
1231 ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1232 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1233 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1234 errormsg = MAGIC_WIPE;
1235 break;
1236 }
1237
1238 ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1239 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1240 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wipeC error");
1241 errormsg = MAGIC_WIPE;
1242 break;
1243 }
1244
1245 if ( mifare_classic_halt_ex(NULL) ) break;
1246 }
1247
1248 // write block
1249 if (workFlags & MAGIC_WUPC) {
1250 ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1251 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1252 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1253 errormsg = MAGIC_WUPC;
1254 break;
1255 }
1256
1257 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1258 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1259 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1260 errormsg = MAGIC_WUPC;
1261 break;
1262 }
1263 }
1264
1265 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1266 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send command error");
1267 errormsg = 4;
1268 break;
1269 }
1270
1271 memcpy(data, datain, 16);
1272 AppendCrc14443a(data, 16);
1273
1274 ReaderTransmit(data, sizeof(data), NULL);
1275 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1276 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send data error");
1277 errormsg = 0;
1278 break;
1279 }
1280
1281 if (workFlags & MAGIC_OFF)
1282 if ( mifare_classic_halt_ex(NULL) ) break;
1283
1284 isOK = true;
1285 break;
1286
1287 } // end while
1288
1289 if (isOK )
1290 cmd_send(CMD_ACK,1,0,0,uid,sizeof(uid));
1291 else
1292 OnErrorMagic(errormsg);
1293
1294 if (workFlags & MAGIC_OFF)
1295 OnSuccessMagic();
1296 }
1297
1298 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1299
1300 uint8_t workFlags = arg0;
1301 uint8_t blockNo = arg1;
1302 uint8_t errormsg = 0x00;
1303 bool isOK = false; //assume we will get an error
1304
1305 // variables
1306 uint8_t data[MAX_MIFARE_FRAME_SIZE];
1307 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1308 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1309
1310 memset(data, 0x00, sizeof(data));
1311
1312 if (workFlags & MAGIC_INIT) {
1313 LED_A_ON();
1314 LED_B_OFF();
1315 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1316 clear_trace();
1317 set_tracing(TRUE);
1318 }
1319
1320 //loop doesn't loop just breaks out if error or done
1321 while (true) {
1322 if (workFlags & MAGIC_WUPC) {
1323 ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1324 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1325 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1326 errormsg = MAGIC_WUPC;
1327 break;
1328 }
1329
1330 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1331 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1332 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1333 errormsg = MAGIC_WUPC;
1334 break;
1335 }
1336 }
1337
1338 // read block
1339 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1340 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("read block send command error");
1341 errormsg = 0;
1342 break;
1343 }
1344
1345 memcpy(data, receivedAnswer, sizeof(data));
1346
1347 // send HALT
1348 if (workFlags & MAGIC_HALT)
1349 mifare_classic_halt_ex(NULL);
1350
1351 isOK = true;
1352 break;
1353 }
1354 // if MAGIC_DATAIN, the data stays on device side.
1355 if (workFlags & MAGIC_DATAIN) {
1356 if (isOK)
1357 memcpy(datain, data, sizeof(data));
1358 } else {
1359 if (isOK)
1360 cmd_send(CMD_ACK,1,0,0,data,sizeof(data));
1361 else
1362 OnErrorMagic(errormsg);
1363 }
1364
1365 if (workFlags & MAGIC_OFF)
1366 OnSuccessMagic();
1367 }
1368
1369 void MifareCIdent(){
1370
1371 // variables
1372 bool isOK = true;
1373 uint8_t receivedAnswer[1] = {0x00};
1374 uint8_t receivedAnswerPar[1] = {0x00};
1375
1376 ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1377 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1378 isOK = false;
1379 }
1380
1381 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1382 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1383 isOK = false;
1384 }
1385
1386 // removed the if, since some magic tags misbehavies and send an answer to it.
1387 mifare_classic_halt(NULL, 0);
1388 cmd_send(CMD_ACK,isOK,0,0,0,0);
1389 }
1390
1391 void OnSuccessMagic(){
1392 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1393 LEDsoff();
1394 set_tracing(FALSE);
1395 }
1396 void OnErrorMagic(uint8_t reason){
1397 // ACK, ISOK, reason,0,0,0
1398 cmd_send(CMD_ACK,0,reason,0,0,0);
1399 OnSuccessMagic();
1400 }
1401 //
1402 // DESFIRE
1403 //
1404 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1405 byte_t dataout[12] = {0x00};
1406 uint8_t uid[10] = {0x00};
1407 uint32_t cuid = 0;
1408
1409 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1410 clear_trace();
1411 set_tracing(true);
1412
1413 int len = iso14443a_select_card(uid, NULL, &cuid, true, 0);
1414 if(!len) {
1415 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1416 OnError(1);
1417 return;
1418 };
1419
1420 if(mifare_desfire_des_auth1(cuid, dataout)){
1421 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1422 OnError(4);
1423 return;
1424 }
1425
1426 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1427 cmd_send(CMD_ACK, 1, cuid, 0, dataout, sizeof(dataout));
1428 }
1429
1430 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1431
1432 uint32_t cuid = arg0;
1433 uint8_t key[16] = {0x00};
1434 byte_t dataout[12] = {0x00};
1435 byte_t isOK = 0;
1436
1437 memcpy(key, datain, 16);
1438
1439 isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1440
1441 if( isOK) {
1442 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1443 OnError(4);
1444 return;
1445 }
1446
1447 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1448
1449 cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1450 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1451 LEDsoff();
1452 set_tracing(FALSE);
1453 }
Impressum, Datenschutz