Merge branch 'master' of https://github.com/holiman/proxmark3
[proxmark3-svn] / armsrc / mifareutil.c
1 //-----------------------------------------------------------------------------
2 // Merlok, May 2011, 2012
3 // Many authors, whom made it possible
4 //
5 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
6 // at your option, any later version. See the LICENSE.txt file for the text of
7 // the license.
8 //-----------------------------------------------------------------------------
9 // Work with mifare cards.
10 //-----------------------------------------------------------------------------
11
12 #include "proxmark3.h"
13 #include "apps.h"
14 #include "util.h"
15 #include "string.h"
16
17 #include "iso14443crc.h"
18 #include "iso14443a.h"
19 #include "crapto1.h"
20 #include "mifareutil.h"
21
22 int MF_DBGLEVEL = MF_DBG_ALL;
23
24 // memory management
25 uint8_t* get_bigbufptr_recvrespbuf(void) {
26 return (((uint8_t *)BigBuf) + RECV_RESP_OFFSET);
27 }
28 uint8_t* get_bigbufptr_recvcmdbuf(void) {
29 return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
30 }
31 uint8_t* get_bigbufptr_emlcardmem(void) {
32 return (((uint8_t *)BigBuf) + CARD_MEMORY_OFFSET);
33 }
34
35 // crypto1 helpers
36 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
37 uint8_t bt = 0;
38 int i;
39
40 if (len != 1) {
41 for (i = 0; i < len; i++)
42 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
43 } else {
44 bt = 0;
45 for (i = 0; i < 4; i++)
46 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;
47
48 data[0] = bt;
49 }
50 return;
51 }
52
53 void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
54 uint8_t bt = 0;
55 int i;
56 par[0] = 0;
57
58 for (i = 0; i < len; i++) {
59 bt = data[i];
60 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
61 if((i&0x0007) == 0)
62 par[i>>3] = 0;
63 par[i>>3] |= (((filter(pcs->odd) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007)));
64 }
65 return;
66 }
67
68 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
69 uint8_t bt = 0;
70 int i;
71
72 for (i = 0; i < 4; i++)
73 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
74
75 return bt;
76 }
77
78 // send commands
79 int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
80 {
81 return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing);
82 }
83
84 int mifare_sendcmd_short_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
85 {
86 uint8_t dcmd[8];
87 dcmd[0] = cmd;
88 dcmd[1] = data[0];
89 dcmd[2] = data[1];
90 dcmd[3] = data[2];
91 dcmd[4] = data[3];
92 dcmd[5] = data[4];
93 AppendCrc14443a(dcmd, 6);
94 ReaderTransmit(dcmd, sizeof(dcmd), NULL);
95 int len = ReaderReceive(answer, answer_parity);
96 if(!len) {
97 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
98 return 2;
99 }
100 return len;
101 }
102
103 int mifare_sendcmd_short_mfucauth(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t *data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
104 {
105 uint8_t dcmd[19];
106 int len;
107 dcmd[0] = cmd;
108 memcpy(dcmd+1,data,16);
109 AppendCrc14443a(dcmd, 17);
110
111 ReaderTransmit(dcmd, sizeof(dcmd), timing);
112 len = ReaderReceive(answer, answer_parity);
113 if(!len) {
114 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed. Card timeout.");
115 len = ReaderReceive(answer,answer_parity);
116 }
117 if(len==1) {
118 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("NAK - Authentication failed.");
119 return 1;
120 }
121 return len;
122 }
123
124 int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
125 {
126 uint8_t dcmd[4], ecmd[4];
127 uint16_t pos, res;
128 uint8_t par[1]; // 1 Byte parity is enough here
129 dcmd[0] = cmd;
130 dcmd[1] = data;
131 AppendCrc14443a(dcmd, 2);
132
133 memcpy(ecmd, dcmd, sizeof(dcmd));
134
135 if (crypted) {
136 par[0] = 0;
137 for (pos = 0; pos < 4; pos++)
138 {
139 ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
140 par[0] |= (((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos));
141 }
142
143 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
144
145 } else {
146 ReaderTransmit(dcmd, sizeof(dcmd), timing);
147 }
148
149 int len = ReaderReceive(answer, par);
150
151 if (answer_parity) *answer_parity = par[0];
152
153 if (crypted == CRYPT_ALL) {
154 if (len == 1) {
155 res = 0;
156 for (pos = 0; pos < 4; pos++)
157 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;
158
159 answer[0] = res;
160
161 } else {
162 for (pos = 0; pos < len; pos++)
163 {
164 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
165 }
166 }
167 }
168
169 return len;
170 }
171
172 // mifare classic commands
173 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested)
174 {
175 return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
176 }
177
178 int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t *ntptr, uint32_t *timing)
179 {
180 // variables
181 int len;
182 uint32_t pos;
183 uint8_t tmp4[4];
184 uint8_t par[1] = {0x00};
185 byte_t nr[4];
186 uint32_t nt, ntpp; // Supplied tag nonce
187
188 uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
189 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
190 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
191
192 // Transmit MIFARE_CLASSIC_AUTH
193 len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
194 if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len);
195 if (len != 4) return 1;
196
197 // "random" reader nonce:
198 nr[0] = 0x55;
199 nr[1] = 0x41;
200 nr[2] = 0x49;
201 nr[3] = 0x92;
202
203 // Save the tag nonce (nt)
204 nt = bytes_to_num(receivedAnswer, 4);
205
206 // ----------------------------- crypto1 create
207 if (isNested)
208 crypto1_destroy(pcs);
209
210 // Init cipher with key
211 crypto1_create(pcs, ui64Key);
212
213 if (isNested == AUTH_NESTED) {
214 // decrypt nt with help of new key
215 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
216 } else {
217 // Load (plain) uid^nt into the cipher
218 crypto1_word(pcs, nt ^ uid, 0);
219 }
220
221 // some statistic
222 if (!ntptr && (MF_DBGLEVEL >= 3))
223 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
224
225 // save Nt
226 if (ntptr)
227 *ntptr = nt;
228
229 // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
230 par[0] = 0;
231 for (pos = 0; pos < 4; pos++)
232 {
233 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
234 par[0] |= (((filter(pcs->odd) ^ oddparity(nr[pos])) & 0x01) << (7-pos));
235 }
236
237 // Skip 32 bits in pseudo random generator
238 nt = prng_successor(nt,32);
239
240 // ar+parity
241 for (pos = 4; pos < 8; pos++)
242 {
243 nt = prng_successor(nt,8);
244 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
245 par[0] |= (((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) << (7-pos));
246 }
247
248 // Transmit reader nonce and reader answer
249 ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
250
251 // Receive 4 byte tag answer
252 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
253 if (!len)
254 {
255 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
256 return 2;
257 }
258
259 memcpy(tmp4, receivedAnswer, 4);
260 ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
261
262 if (ntpp != bytes_to_num(tmp4, 4)) {
263 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");
264 return 3;
265 }
266
267 return 0;
268 }
269
270 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
271 {
272 // variables
273 int len;
274 uint8_t bt[2];
275
276 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
277 uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
278
279 // command MIFARE_CLASSIC_READBLOCK
280 len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
281 if (len == 1) {
282 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
283 return 1;
284 }
285 if (len != 18) {
286 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len);
287 return 2;
288 }
289
290 memcpy(bt, receivedAnswer + 16, 2);
291 AppendCrc14443a(receivedAnswer, 16);
292 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
293 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error.");
294 return 3;
295 }
296
297 memcpy(blockData, receivedAnswer, 16);
298 return 0;
299 }
300
301 // mifare ultralight commands
302 int mifare_ultra_auth1(uint32_t uid, uint8_t *blockData){
303
304 uint16_t len;
305 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
306 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
307
308 len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, receivedAnswer,receivedAnswerPar ,NULL);
309 if (len == 1) {
310 if (MF_DBGLEVEL >= MF_DBG_ERROR)
311 Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
312 return 1;
313 }
314 if (len != 11)
315 return 1;
316
317 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
318 Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
319 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
320 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
321 receivedAnswer[10]);
322 }
323 memcpy(blockData, receivedAnswer, 11);
324 return 0;
325 }
326
327 int mifare_ultra_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
328
329 uint16_t len;
330 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
331 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
332
333 len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, key, receivedAnswer, receivedAnswerPar, NULL);
334 if (len == 1) {
335 if (MF_DBGLEVEL >= MF_DBG_ERROR)
336 Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
337 return 1;
338 }
339 if (len != 11)
340 return 1;
341
342 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
343 Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
344 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
345 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
346 receivedAnswer[10]);
347 }
348 memcpy(blockData, receivedAnswer, 11);
349 return 0;
350 }
351
352 int mifare_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
353 {
354 uint16_t len;
355 uint8_t bt[2];
356 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
357 uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
358
359
360 // command MIFARE_CLASSIC_READBLOCK
361 len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
362 if (len == 1) {
363 if (MF_DBGLEVEL >= MF_DBG_ERROR)
364 Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
365 return 1;
366 }
367 if (len != 18) {
368 if (MF_DBGLEVEL >= MF_DBG_ERROR)
369 Dbprintf("Cmd Error: card timeout. len: %x", len);
370 return 2;
371 }
372
373 memcpy(bt, receivedAnswer + 16, 2);
374 AppendCrc14443a(receivedAnswer, 16);
375 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
376 if (MF_DBGLEVEL >= MF_DBG_ERROR)
377 Dbprintf("Cmd CRC response error.");
378 return 3;
379 }
380
381 memcpy(blockData, receivedAnswer, 14);
382 return 0;
383 }
384
385
386 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
387 {
388 // variables
389 uint16_t len, i;
390 uint32_t pos;
391 uint8_t par[3] = {0}; // enough for 18 Bytes to send
392 byte_t res;
393
394 uint8_t d_block[18], d_block_enc[18];
395 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
396 uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
397
398 // command MIFARE_CLASSIC_WRITEBLOCK
399 len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
400
401 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
402 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
403 return 1;
404 }
405
406 memcpy(d_block, blockData, 16);
407 AppendCrc14443a(d_block, 16);
408
409 // crypto
410 for (pos = 0; pos < 18; pos++)
411 {
412 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
413 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
414 }
415
416 ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
417
418 // Receive the response
419 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
420
421 res = 0;
422 for (i = 0; i < 4; i++)
423 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
424
425 if ((len != 1) || (res != 0x0A)) {
426 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res);
427 return 2;
428 }
429
430 return 0;
431 }
432
433 int mifare_ultra_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
434 {
435 uint16_t len;
436 uint8_t par[3] = {0}; // enough for 18 parity bits
437 uint8_t d_block[18] = {0x00};
438 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
439 uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
440
441 // command MIFARE_CLASSIC_WRITEBLOCK
442 len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
443
444 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
445 if (MF_DBGLEVEL >= MF_DBG_ERROR)
446 Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
447 return 1;
448 }
449
450 memcpy(d_block, blockData, 16);
451 AppendCrc14443a(d_block, 16);
452
453 ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
454
455 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
456
457 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
458 if (MF_DBGLEVEL >= MF_DBG_ERROR)
459 Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
460 return 2;
461 }
462 return 0;
463 }
464
465 int mifare_ultra_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
466 {
467 uint16_t len;
468 uint8_t d_block[8] = {0x00};
469 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
470 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
471
472 // command MIFARE_CLASSIC_WRITEBLOCK
473 d_block[0]= blockNo;
474 memcpy(d_block+1,blockData,4);
475 AppendCrc14443a(d_block, 6);
476
477 len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);
478
479 if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK
480 if (MF_DBGLEVEL >= MF_DBG_ERROR)
481 Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
482 return 1;
483 }
484 return 0;
485 }
486
487 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
488 {
489 uint16_t len;
490 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
491 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
492
493 len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
494 if (len != 0) {
495 if (MF_DBGLEVEL >= MF_DBG_ERROR)
496 Dbprintf("halt error. response len: %x", len);
497 return 1;
498 }
499
500 return 0;
501 }
502
503 int mifare_ultra_halt(uint32_t uid)
504 {
505 uint16_t len;
506 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
507 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
508
509 len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
510 if (len != 0) {
511 if (MF_DBGLEVEL >= MF_DBG_ERROR)
512 Dbprintf("halt error. response len: %x", len);
513 return 1;
514 }
515 return 0;
516 }
517
518
519 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
520 // plus evtl. 8 sectors with 16 blocks each (4k cards)
521 uint8_t NumBlocksPerSector(uint8_t sectorNo)
522 {
523 if (sectorNo < 32)
524 return 4;
525 else
526 return 16;
527 }
528
529 uint8_t FirstBlockOfSector(uint8_t sectorNo)
530 {
531 if (sectorNo < 32)
532 return sectorNo * 4;
533 else
534 return 32*4 + (sectorNo - 32) * 16;
535
536 }
537
538
539 // work with emulator memory
540 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
541 uint8_t* emCARD = get_bigbufptr_emlcardmem();
542 memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
543 }
544
545 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
546 uint8_t* emCARD = get_bigbufptr_emlcardmem();
547 memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
548 }
549
550 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
551 uint8_t* emCARD = get_bigbufptr_emlcardmem();
552 memcpy(data, emCARD + bytePtr, byteCount);
553 }
554
555 int emlCheckValBl(int blockNum) {
556 uint8_t* emCARD = get_bigbufptr_emlcardmem();
557 uint8_t* data = emCARD + blockNum * 16;
558
559 if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
560 (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
561 (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
562 (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
563 (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
564 (data[12] != (data[15] ^ 0xff))
565 )
566 return 1;
567 return 0;
568 }
569
570 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
571 uint8_t* emCARD = get_bigbufptr_emlcardmem();
572 uint8_t* data = emCARD + blockNum * 16;
573
574 if (emlCheckValBl(blockNum)) {
575 return 1;
576 }
577
578 memcpy(blReg, data, 4);
579 *blBlock = data[12];
580 return 0;
581 }
582
583 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
584 uint8_t* emCARD = get_bigbufptr_emlcardmem();
585 uint8_t* data = emCARD + blockNum * 16;
586
587 memcpy(data + 0, &blReg, 4);
588 memcpy(data + 8, &blReg, 4);
589 blReg = blReg ^ 0xffffffff;
590 memcpy(data + 4, &blReg, 4);
591
592 data[12] = blBlock;
593 data[13] = blBlock ^ 0xff;
594 data[14] = blBlock;
595 data[15] = blBlock ^ 0xff;
596
597 return 0;
598 }
599
600 uint64_t emlGetKey(int sectorNum, int keyType) {
601 uint8_t key[6];
602 uint8_t* emCARD = get_bigbufptr_emlcardmem();
603
604 memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
605 return bytes_to_num(key, 6);
606 }
607
608 void emlClearMem(void) {
609 int b;
610
611 const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
612 const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
613 uint8_t* emCARD = get_bigbufptr_emlcardmem();
614
615 memset(emCARD, 0, CARD_MEMORY_SIZE);
616
617 // fill sectors trailer data
618 for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
619 emlSetMem((uint8_t *)trailer, b , 1);
620 }
621
622 // uid
623 emlSetMem((uint8_t *)uid, 0, 1);
624 return;
625 }
626
627
628 // Mifare desfire commands
629 int mifare_sendcmd_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
630 {
631 uint8_t dcmd[5] = {0x00};
632 dcmd[0] = cmd;
633 memcpy(dcmd+1,data,2);
634 AppendCrc14443a(dcmd, 3);
635
636 ReaderTransmit(dcmd, sizeof(dcmd), NULL);
637 int len = ReaderReceive(answer, answer_parity);
638 if(!len) {
639 if (MF_DBGLEVEL >= MF_DBG_ERROR)
640 Dbprintf("Authentication failed. Card timeout.");
641 return 1;
642 }
643 return len;
644 }
645
646 int mifare_sendcmd_special2(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer,uint8_t *answer_parity, uint32_t *timing)
647 {
648 uint8_t dcmd[20] = {0x00};
649 dcmd[0] = cmd;
650 memcpy(dcmd+1,data,17);
651 AppendCrc14443a(dcmd, 18);
652
653 ReaderTransmit(dcmd, sizeof(dcmd), NULL);
654 int len = ReaderReceive(answer, answer_parity);
655 if(!len){
656 if (MF_DBGLEVEL >= MF_DBG_ERROR)
657 Dbprintf("Authentication failed. Card timeout.");
658 return 1;
659 }
660 return len;
661 }
662
663 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
664
665 int len;
666 // load key, keynumber
667 uint8_t data[2]={0x0a, 0x00};
668 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
669 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
670
671 len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
672 if (len == 1) {
673 if (MF_DBGLEVEL >= MF_DBG_ERROR)
674 Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
675 return 1;
676 }
677
678 if (len == 12) {
679 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
680 Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
681 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
682 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
683 receivedAnswer[10],receivedAnswer[11]);
684 }
685 memcpy(blockData, receivedAnswer, 12);
686 return 0;
687 }
688 return 1;
689 }
690
691 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
692
693 int len;
694 uint8_t data[17] = {0x00};
695 data[0] = 0xAF;
696 memcpy(data+1,key,16);
697
698 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
699 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
700
701 len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
702
703 if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
704 if (MF_DBGLEVEL >= MF_DBG_ERROR)
705 Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
706 return 1;
707 }
708
709 if (len == 12){
710 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
711 Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
712 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
713 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
714 receivedAnswer[10],receivedAnswer[11]);
715 }
716 memcpy(blockData, receivedAnswer, 12);
717 return 0;
718 }
719 return 1;
720 }
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