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bug fix for hf iclass reader and iclass detection
[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 "mifareutil.h"
13 #include "proxmark3.h"
14 #include "apps.h"
15 #include "util.h"
16 #include "parity.h"
17 #include "string.h"
18
19 #include "iso14443crc.h"
20 #include "iso14443a.h"
21 #include "crapto1/crapto1.h"
22 #include "des.h"
23
24 int MF_DBGLEVEL = MF_DBG_ALL;
25
26 // crypto1 helpers
27 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
28 uint8_t bt = 0;
29 int i;
30
31 if (len != 1) {
32 for (i = 0; i < len; i++)
33 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
34 } else {
35 bt = 0;
36 for (i = 0; i < 4; i++)
37 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;
38
39 data[0] = bt;
40 }
41 return;
42 }
43
44 void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
45 uint8_t bt = 0;
46 int i;
47 par[0] = 0;
48
49 for (i = 0; i < len; i++) {
50 bt = data[i];
51 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
52 if((i&0x0007) == 0)
53 par[i>>3] = 0;
54 par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
55 }
56 return;
57 }
58
59 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
60 uint8_t bt = 0;
61 int i;
62
63 for (i = 0; i < 4; i++)
64 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
65
66 return bt;
67 }
68
69 // send X byte basic commands
70 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
71 {
72 uint8_t dcmd[data_size+3];
73 dcmd[0] = cmd;
74 memcpy(dcmd+1,data,data_size);
75 AppendCrc14443a(dcmd, data_size+1);
76 ReaderTransmit(dcmd, sizeof(dcmd), timing);
77 int len = ReaderReceive(answer, answer_parity);
78 if(!len) {
79 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("%02X Cmd failed. Card timeout.", cmd);
80 len = ReaderReceive(answer,answer_parity);
81 //return 0;
82 }
83 return len;
84 }
85
86 // send 2 byte commands
87 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)
88 {
89 uint8_t dcmd[4], ecmd[4];
90 uint16_t pos, res;
91 uint8_t par[1]; // 1 Byte parity is enough here
92 dcmd[0] = cmd;
93 dcmd[1] = data;
94 AppendCrc14443a(dcmd, 2);
95
96 memcpy(ecmd, dcmd, sizeof(dcmd));
97
98 if (crypted) {
99 par[0] = 0;
100 for (pos = 0; pos < 4; pos++)
101 {
102 ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
103 par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
104 }
105
106 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
107
108 } else {
109 ReaderTransmit(dcmd, sizeof(dcmd), timing);
110 }
111
112 int len = ReaderReceive(answer, par);
113
114 if (answer_parity) *answer_parity = par[0];
115
116 if (crypted == CRYPT_ALL) {
117 if (len == 1) {
118 res = 0;
119 for (pos = 0; pos < 4; pos++)
120 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;
121
122 answer[0] = res;
123
124 } else {
125 for (pos = 0; pos < len; pos++)
126 {
127 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
128 }
129 }
130 }
131
132 return len;
133 }
134
135 // mifare classic commands
136 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested)
137 {
138 return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
139 }
140
141 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)
142 {
143 // variables
144 int len;
145 uint32_t pos;
146 uint8_t tmp4[4];
147 uint8_t par[1] = {0x00};
148 byte_t nr[4];
149 uint32_t nt, ntpp; // Supplied tag nonce
150
151 uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
152 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
153 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
154
155 // Transmit MIFARE_CLASSIC_AUTH
156 len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
157 if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len);
158 if (len != 4) return 1;
159
160 // "random" reader nonce:
161 nr[0] = 0x55;
162 nr[1] = 0x41;
163 nr[2] = 0x49;
164 nr[3] = 0x92;
165
166 // Save the tag nonce (nt)
167 nt = bytes_to_num(receivedAnswer, 4);
168
169 // ----------------------------- crypto1 create
170 if (isNested)
171 crypto1_destroy(pcs);
172
173 // Init cipher with key
174 crypto1_create(pcs, ui64Key);
175
176 if (isNested == AUTH_NESTED) {
177 // decrypt nt with help of new key
178 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
179 } else {
180 // Load (plain) uid^nt into the cipher
181 crypto1_word(pcs, nt ^ uid, 0);
182 }
183
184 // some statistic
185 if (!ntptr && (MF_DBGLEVEL >= 3))
186 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
187
188 // save Nt
189 if (ntptr)
190 *ntptr = nt;
191
192 // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
193 par[0] = 0;
194 for (pos = 0; pos < 4; pos++)
195 {
196 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
197 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
198 }
199
200 // Skip 32 bits in pseudo random generator
201 nt = prng_successor(nt,32);
202
203 // ar+parity
204 for (pos = 4; pos < 8; pos++)
205 {
206 nt = prng_successor(nt,8);
207 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
208 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt)) & 0x01) << (7-pos));
209 }
210
211 // Transmit reader nonce and reader answer
212 ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
213
214 // Receive 4 byte tag answer
215 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
216 if (!len)
217 {
218 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
219 return 2;
220 }
221
222 memcpy(tmp4, receivedAnswer, 4);
223 ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
224
225 if (ntpp != bytes_to_num(tmp4, 4)) {
226 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");
227 return 3;
228 }
229
230 return 0;
231 }
232
233 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
234 {
235 // variables
236 int len;
237 uint8_t bt[2];
238
239 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
240 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
241
242 // command MIFARE_CLASSIC_READBLOCK
243 len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
244 if (len == 1) {
245 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
246 return 1;
247 }
248 if (len != 18) {
249 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len);
250 return 2;
251 }
252
253 memcpy(bt, receivedAnswer + 16, 2);
254 AppendCrc14443a(receivedAnswer, 16);
255 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
256 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error.");
257 return 3;
258 }
259
260 memcpy(blockData, receivedAnswer, 16);
261 return 0;
262 }
263
264 // mifare ultralight commands
265 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
266
267 uint16_t len;
268 uint8_t resp[4];
269 uint8_t respPar[1];
270 uint8_t key[4] = {0x00};
271 memcpy(key, keybytes, 4);
272
273 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
274 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
275 len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
276 //len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);
277 if (len != 4) {
278 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
279 return 0;
280 }
281
282 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
283 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
284
285 memcpy(pack, resp, 4);
286 return 1;
287 }
288
289 int mifare_ultra_auth(uint8_t *keybytes){
290
291 /// 3des2k
292
293 uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
294 uint8_t random_b[8] = {0x00};
295 uint8_t enc_random_b[8] = {0x00};
296 uint8_t rnd_ab[16] = {0x00};
297 uint8_t IV[8] = {0x00};
298 uint8_t key[16] = {0x00};
299 memcpy(key, keybytes, 16);
300
301 uint16_t len;
302 uint8_t resp[19] = {0x00};
303 uint8_t respPar[3] = {0,0,0};
304
305 // REQUEST AUTHENTICATION
306 len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
307 if (len != 11) {
308 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
309 return 0;
310 }
311
312 // tag nonce.
313 memcpy(enc_random_b,resp+1,8);
314
315 // decrypt nonce.
316 tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
317 rol(random_b,8);
318 memcpy(rnd_ab ,random_a,8);
319 memcpy(rnd_ab+8,random_b,8);
320
321 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
322 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
323 enc_random_b[0],enc_random_b[1],enc_random_b[2],enc_random_b[3],enc_random_b[4],enc_random_b[5],enc_random_b[6],enc_random_b[7]);
324
325 Dbprintf(" B: %02x %02x %02x %02x %02x %02x %02x %02x",
326 random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
327
328 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
329 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
330
331 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
332 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
333 }
334
335 // encrypt out, in, length, key, iv
336 tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
337 //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
338 len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
339 if (len != 11) {
340 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
341 return 0;
342 }
343
344 uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
345 uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
346 memcpy(enc_resp, resp+1, 8);
347
348 // decrypt out, in, length, key, iv
349 tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
350 if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
351 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
352 return 0;
353 }
354
355 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
356 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
357 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
358 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
359
360 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
361 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
362 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
363
364 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
365 random_a[0],random_a[1],random_a[2],random_a[3],
366 random_a[4],random_a[5],random_a[6],random_a[7]);
367
368 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
369 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
370 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
371 }
372 return 1;
373 }
374
375 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
376 {
377 uint16_t len;
378 uint8_t bt[2];
379 uint8_t receivedAnswer[MAX_FRAME_SIZE];
380 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
381
382
383 len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
384 if (len == 1) {
385 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
386 return 1;
387 }
388 if (len != 18) {
389 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
390 return 2;
391 }
392
393 memcpy(bt, receivedAnswer + 16, 2);
394 AppendCrc14443a(receivedAnswer, 16);
395 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
396 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
397 return 3;
398 }
399
400 memcpy(blockData, receivedAnswer, 14);
401 return 0;
402 }
403
404 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
405 {
406 // variables
407 uint16_t len, i;
408 uint32_t pos;
409 uint8_t par[3] = {0}; // enough for 18 Bytes to send
410 byte_t res;
411
412 uint8_t d_block[18], d_block_enc[18];
413 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
414 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
415
416 // command MIFARE_CLASSIC_WRITEBLOCK
417 len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
418
419 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
420 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
421 return 1;
422 }
423
424 memcpy(d_block, blockData, 16);
425 AppendCrc14443a(d_block, 16);
426
427 // crypto
428 for (pos = 0; pos < 18; pos++)
429 {
430 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
431 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
432 }
433
434 ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
435
436 // Receive the response
437 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
438
439 res = 0;
440 for (i = 0; i < 4; i++)
441 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
442
443 if ((len != 1) || (res != 0x0A)) {
444 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res);
445 return 2;
446 }
447
448 return 0;
449 }
450
451 /* // command not needed, but left for future testing
452 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData)
453 {
454 uint16_t len;
455 uint8_t par[3] = {0}; // enough for 18 parity bits
456 uint8_t d_block[18] = {0x00};
457 uint8_t receivedAnswer[MAX_FRAME_SIZE];
458 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
459
460 len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
461
462 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
463 if (MF_DBGLEVEL >= MF_DBG_ERROR)
464 Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
465 return 1;
466 }
467
468 memcpy(d_block, blockData, 16);
469 AppendCrc14443a(d_block, 16);
470
471 ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
472
473 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
474
475 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
476 if (MF_DBGLEVEL >= MF_DBG_ERROR)
477 Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
478 return 2;
479 }
480 return 0;
481 }
482 */
483
484 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
485 {
486 uint16_t len;
487 uint8_t d_block[5] = {0x00};
488 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
489 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
490
491 // command MIFARE_CLASSIC_WRITEBLOCK
492 d_block[0]= blockNo;
493 memcpy(d_block+1,blockData,4);
494 //AppendCrc14443a(d_block, 6);
495
496 len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);
497
498 if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK
499 if (MF_DBGLEVEL >= MF_DBG_ERROR)
500 Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
501 return 1;
502 }
503 return 0;
504 }
505
506 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
507 {
508 uint16_t len;
509 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
510 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
511
512 len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
513 if (len != 0) {
514 if (MF_DBGLEVEL >= MF_DBG_ERROR)
515 Dbprintf("halt error. response len: %x", len);
516 return 1;
517 }
518
519 return 0;
520 }
521
522 int mifare_ultra_halt()
523 {
524 uint16_t len;
525 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
526 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
527
528 len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
529 if (len != 0) {
530 if (MF_DBGLEVEL >= MF_DBG_ERROR)
531 Dbprintf("halt error. response len: %x", len);
532 return 1;
533 }
534 return 0;
535 }
536
537
538 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
539 // plus evtl. 8 sectors with 16 blocks each (4k cards)
540 uint8_t NumBlocksPerSector(uint8_t sectorNo)
541 {
542 if (sectorNo < 32)
543 return 4;
544 else
545 return 16;
546 }
547
548 uint8_t FirstBlockOfSector(uint8_t sectorNo)
549 {
550 if (sectorNo < 32)
551 return sectorNo * 4;
552 else
553 return 32*4 + (sectorNo - 32) * 16;
554
555 }
556
557
558 // work with emulator memory
559 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
560 uint8_t* emCARD = BigBuf_get_EM_addr();
561 memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
562 }
563
564 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
565 uint8_t* emCARD = BigBuf_get_EM_addr();
566 memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
567 }
568
569 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
570 uint8_t* emCARD = BigBuf_get_EM_addr();
571 memcpy(data, emCARD + bytePtr, byteCount);
572 }
573
574 int emlCheckValBl(int blockNum) {
575 uint8_t* emCARD = BigBuf_get_EM_addr();
576 uint8_t* data = emCARD + blockNum * 16;
577
578 if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
579 (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
580 (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
581 (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
582 (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
583 (data[12] != (data[15] ^ 0xff))
584 )
585 return 1;
586 return 0;
587 }
588
589 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
590 uint8_t* emCARD = BigBuf_get_EM_addr();
591 uint8_t* data = emCARD + blockNum * 16;
592
593 if (emlCheckValBl(blockNum)) {
594 return 1;
595 }
596
597 memcpy(blReg, data, 4);
598 *blBlock = data[12];
599 return 0;
600 }
601
602 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
603 uint8_t* emCARD = BigBuf_get_EM_addr();
604 uint8_t* data = emCARD + blockNum * 16;
605
606 memcpy(data + 0, &blReg, 4);
607 memcpy(data + 8, &blReg, 4);
608 blReg = blReg ^ 0xffffffff;
609 memcpy(data + 4, &blReg, 4);
610
611 data[12] = blBlock;
612 data[13] = blBlock ^ 0xff;
613 data[14] = blBlock;
614 data[15] = blBlock ^ 0xff;
615
616 return 0;
617 }
618
619 uint64_t emlGetKey(int sectorNum, int keyType) {
620 uint8_t key[6];
621 uint8_t* emCARD = BigBuf_get_EM_addr();
622
623 memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
624 return bytes_to_num(key, 6);
625 }
626
627 void emlClearMem(void) {
628 int b;
629
630 const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
631 const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
632 uint8_t* emCARD = BigBuf_get_EM_addr();
633
634 memset(emCARD, 0, CARD_MEMORY_SIZE);
635
636 // fill sectors trailer data
637 for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
638 emlSetMem((uint8_t *)trailer, b , 1);
639 }
640
641 // uid
642 emlSetMem((uint8_t *)uid, 0, 1);
643 return;
644 }
645
646
647 // Mifare desfire commands
648 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)
649 {
650 uint8_t dcmd[5] = {0x00};
651 dcmd[0] = cmd;
652 memcpy(dcmd+1,data,2);
653 AppendCrc14443a(dcmd, 3);
654
655 ReaderTransmit(dcmd, sizeof(dcmd), NULL);
656 int len = ReaderReceive(answer, answer_parity);
657 if(!len) {
658 if (MF_DBGLEVEL >= MF_DBG_ERROR)
659 Dbprintf("Authentication failed. Card timeout.");
660 return 1;
661 }
662 return len;
663 }
664
665 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)
666 {
667 uint8_t dcmd[20] = {0x00};
668 dcmd[0] = cmd;
669 memcpy(dcmd+1,data,17);
670 AppendCrc14443a(dcmd, 18);
671
672 ReaderTransmit(dcmd, sizeof(dcmd), NULL);
673 int len = ReaderReceive(answer, answer_parity);
674 if(!len){
675 if (MF_DBGLEVEL >= MF_DBG_ERROR)
676 Dbprintf("Authentication failed. Card timeout.");
677 return 1;
678 }
679 return len;
680 }
681
682 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
683
684 int len;
685 // load key, keynumber
686 uint8_t data[2]={0x0a, 0x00};
687 uint8_t receivedAnswer[MAX_FRAME_SIZE];
688 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
689
690 len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
691 if (len == 1) {
692 if (MF_DBGLEVEL >= MF_DBG_ERROR)
693 Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
694 return 1;
695 }
696
697 if (len == 12) {
698 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
699 Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
700 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
701 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
702 receivedAnswer[10],receivedAnswer[11]);
703 }
704 memcpy(blockData, receivedAnswer, 12);
705 return 0;
706 }
707 return 1;
708 }
709
710 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
711
712 int len;
713 uint8_t data[17] = {0x00};
714 data[0] = 0xAF;
715 memcpy(data+1,key,16);
716
717 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
718 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
719
720 len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
721
722 if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
723 if (MF_DBGLEVEL >= MF_DBG_ERROR)
724 Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
725 return 1;
726 }
727
728 if (len == 12){
729 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
730 Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
731 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
732 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
733 receivedAnswer[10],receivedAnswer[11]);
734 }
735 memcpy(blockData, receivedAnswer, 12);
736 return 0;
737 }
738 return 1;
739 }
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