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