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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 "mifareutil.h"\r
13\r
14#include <string.h>\r
15#include <stdbool.h>\r
16\r
17#include "proxmark3.h"\r
18#include "apps.h"\r
19#include "util.h"\r
20#include "parity.h"\r
21#include "iso14443crc.h"\r
22#include "iso14443a.h"\r
23#include "crapto1/crapto1.h"\r
24#include "polarssl/des.h"\r
25\r
26int MF_DBGLEVEL = MF_DBG_ALL;\r
27\r
28// crypto1 helpers\r
29void mf_crypto1_decryptEx(struct Crypto1State *pcs, uint8_t *data_in, int len, uint8_t *data_out){\r
30 uint8_t bt = 0;\r
31 int i;\r
32 \r
33 if (len != 1) {\r
34 for (i = 0; i < len; i++)\r
35 data_out[i] = crypto1_byte(pcs, 0x00, 0) ^ data_in[i];\r
36 } else {\r
37 bt = 0;\r
38 for (i = 0; i < 4; i++)\r
39 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], i)) << i;\r
40 \r
41 data_out[0] = bt;\r
42 }\r
43 return;\r
44}\r
45\r
46void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){\r
47 mf_crypto1_decryptEx(pcs, data, len, data);\r
48}\r
49\r
50void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {\r
51 uint8_t bt = 0;\r
52 int i;\r
53 par[0] = 0;\r
54 \r
55 for (i = 0; i < len; i++) {\r
56 bt = data[i];\r
57 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r
58 if((i&0x0007) == 0) \r
59 par[i>>3] = 0;\r
60 par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));\r
61 } \r
62 return;\r
63}\r
64\r
65uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {\r
66 uint8_t bt = 0;\r
67 int i;\r
68\r
69 for (i = 0; i < 4; i++)\r
70 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;\r
71 \r
72 return bt;\r
73}\r
74\r
75// send X byte basic commands\r
76int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)\r
77{\r
78 uint8_t dcmd[data_size+3];\r
79 dcmd[0] = cmd;\r
80 memcpy(dcmd+1,data,data_size);\r
81 AppendCrc14443a(dcmd, data_size+1);\r
82 ReaderTransmit(dcmd, sizeof(dcmd), timing);\r
83 int len = ReaderReceive(answer, answer_parity);\r
84 if(!len) {\r
85 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("%02X Cmd failed. Card timeout.", cmd);\r
86 len = ReaderReceive(answer,answer_parity);\r
87 //return 0;\r
88 }\r
89 return len;\r
90}\r
91\r
92// send 2 byte commands\r
93int 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
94{\r
95 uint8_t dcmd[4], ecmd[4];\r
96 uint16_t pos, res;\r
97 uint8_t par[1]; // 1 Byte parity is enough here\r
98 dcmd[0] = cmd;\r
99 dcmd[1] = data;\r
100 AppendCrc14443a(dcmd, 2);\r
101 \r
102 memcpy(ecmd, dcmd, sizeof(dcmd));\r
103 \r
104 if (crypted) {\r
105 par[0] = 0;\r
106 for (pos = 0; pos < 4; pos++)\r
107 {\r
108 ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];\r
109 par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));\r
110 } \r
111\r
112 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);\r
113\r
114 } else {\r
115 ReaderTransmit(dcmd, sizeof(dcmd), timing);\r
116 }\r
117\r
118 int len = ReaderReceive(answer, par);\r
119 \r
120 if (answer_parity) *answer_parity = par[0];\r
121 \r
122 if (crypted == CRYPT_ALL) {\r
123 if (len == 1) {\r
124 res = 0;\r
125 for (pos = 0; pos < 4; pos++)\r
126 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;\r
127 \r
128 answer[0] = res;\r
129 \r
130 } else {\r
131 for (pos = 0; pos < len; pos++)\r
132 {\r
133 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];\r
134 }\r
135 }\r
136 }\r
137 \r
138 return len;\r
139}\r
140\r
141// mifare classic commands\r
142int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) \r
143{\r
144 return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);\r
145}\r
146\r
147int 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
148{\r
149 // variables\r
150 int len; \r
151 uint32_t pos;\r
152 uint8_t tmp4[4];\r
153 uint8_t par[1] = {0x00};\r
154 byte_t nr[4];\r
155 uint32_t nt, ntpp; // Supplied tag nonce\r
156 \r
157 uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };\r
158 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
159 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
160 \r
161 // Transmit MIFARE_CLASSIC_AUTH\r
162 len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);\r
163 if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len); \r
164 if (len != 4) return 1;\r
165 \r
166 // "random" reader nonce:\r
167 nr[0] = 0x55;\r
168 nr[1] = 0x41;\r
169 nr[2] = 0x49;\r
170 nr[3] = 0x92; \r
171 \r
172 // Save the tag nonce (nt)\r
173 nt = bytes_to_num(receivedAnswer, 4);\r
174\r
175 // ----------------------------- crypto1 create\r
176 if (isNested)\r
177 crypto1_destroy(pcs);\r
178\r
179 // Init cipher with key\r
180 crypto1_create(pcs, ui64Key);\r
181\r
182 if (isNested == AUTH_NESTED) {\r
183 // decrypt nt with help of new key \r
184 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;\r
185 } else {\r
186 // Load (plain) uid^nt into the cipher\r
187 crypto1_word(pcs, nt ^ uid, 0);\r
188 }\r
189\r
190 // some statistic\r
191 if (!ntptr && (MF_DBGLEVEL >= 3))\r
192 Dbprintf("auth uid: %08x nt: %08x", uid, nt); \r
193 \r
194 // save Nt\r
195 if (ntptr)\r
196 *ntptr = nt;\r
197\r
198 // Generate (encrypted) nr+parity by loading it into the cipher (Nr)\r
199 par[0] = 0;\r
200 for (pos = 0; pos < 4; pos++)\r
201 {\r
202 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r
203 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));\r
204 } \r
205 \r
206 // Skip 32 bits in pseudo random generator\r
207 nt = prng_successor(nt,32);\r
208\r
209 // ar+parity\r
210 for (pos = 4; pos < 8; pos++)\r
211 {\r
212 nt = prng_successor(nt,8);\r
213 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);\r
214 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt)) & 0x01) << (7-pos));\r
215 } \r
216 \r
217 // Transmit reader nonce and reader answer\r
218 ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);\r
219\r
220 // Receive 4 byte tag answer\r
221 len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r
222 if (!len)\r
223 {\r
224 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");\r
225 return 2;\r
226 }\r
227 \r
228 memcpy(tmp4, receivedAnswer, 4);\r
229 ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);\r
230 \r
231 if (ntpp != bytes_to_num(tmp4, 4)) {\r
232 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");\r
233 return 3;\r
234 }\r
235\r
236 return 0;\r
237}\r
238\r
239int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) \r
240{\r
241 // variables\r
242 int len; \r
243 uint8_t bt[2];\r
244 \r
245 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
246 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
247 \r
248 // command MIFARE_CLASSIC_READBLOCK\r
249 len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
250 if (len == 1) {\r
251 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r
252 return 1;\r
253 }\r
254 if (len != 18) {\r
255 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len); \r
256 return 2;\r
257 }\r
258\r
259 memcpy(bt, receivedAnswer + 16, 2);\r
260 AppendCrc14443a(receivedAnswer, 16);\r
261 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {\r
262 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error."); \r
263 return 3;\r
264 }\r
265 \r
266 memcpy(blockData, receivedAnswer, 16);\r
267 return 0;\r
268}\r
269\r
270// mifare ultralight commands\r
271int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){\r
272\r
273 uint16_t len;\r
274 uint8_t resp[4];\r
275 uint8_t respPar[1];\r
276 uint8_t key[4] = {0x00};\r
277 memcpy(key, keybytes, 4);\r
278\r
279 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)\r
280 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);\r
281 len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);\r
282 //len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);\r
283 if (len != 4) {\r
284 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);\r
285 return 0;\r
286 }\r
287\r
288 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)\r
289 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);\r
290\r
291 memcpy(pack, resp, 4);\r
292 return 1;\r
293}\r
294\r
295int mifare_ultra_auth(uint8_t *keybytes){\r
296\r
297 /// 3des2k\r
298\r
299 des3_context ctx = { 0x00 };\r
300 uint8_t random_a[8] = {1,1,1,1,1,1,1,1};\r
301 uint8_t random_b[8] = {0x00};\r
302 uint8_t enc_random_b[8] = {0x00};\r
303 uint8_t rnd_ab[16] = {0x00};\r
304 uint8_t IV[8] = {0x00};\r
305 uint8_t key[16] = {0x00};\r
306 memcpy(key, keybytes, 16);\r
307\r
308 uint16_t len;\r
309 uint8_t resp[19] = {0x00};\r
310 uint8_t respPar[3] = {0,0,0};\r
311\r
312 // REQUEST AUTHENTICATION\r
313 len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);\r
314 if (len != 11) {\r
315 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);\r
316 return 0;\r
317 }\r
318\r
319 // tag nonce.\r
320 memcpy(enc_random_b,resp+1,8);\r
321\r
322 // decrypt nonce.\r
323 // tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );\r
324 des3_set2key_dec(&ctx, key);\r
325 des3_crypt_cbc(&ctx // des3_context\r
326 , DES_DECRYPT // int mode\r
327 , sizeof(random_b) // length\r
328 , IV // iv[8]\r
329 , enc_random_b // input\r
330 , random_b // output\r
331 );\r
332\r
333 rol(random_b,8);\r
334 memcpy(rnd_ab ,random_a,8);\r
335 memcpy(rnd_ab+8,random_b,8);\r
336\r
337 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r
338 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",\r
339 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]);\r
340\r
341 Dbprintf(" B: %02x %02x %02x %02x %02x %02x %02x %02x",\r
342 random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);\r
343\r
344 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",\r
345 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);\r
346\r
347 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",\r
348 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );\r
349 }\r
350\r
351 // encrypt out, in, length, key, iv\r
352 //tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);\r
353 des3_set2key_enc(&ctx, key);\r
354 des3_crypt_cbc(&ctx // des3_context\r
355 , DES_ENCRYPT // int mode\r
356 , sizeof(rnd_ab) // length\r
357 , enc_random_b // iv[8]\r
358 , rnd_ab // input\r
359 , rnd_ab // output\r
360 );\r
361\r
362 //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);\r
363 len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);\r
364 if (len != 11) {\r
365 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);\r
366 return 0;\r
367 }\r
368\r
369 uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };\r
370 uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };\r
371 memcpy(enc_resp, resp+1, 8);\r
372\r
373 // decrypt out, in, length, key, iv \r
374 // tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);\r
375 des3_set2key_dec(&ctx, key);\r
376 des3_crypt_cbc(&ctx // des3_context\r
377 , DES_DECRYPT // int mode\r
378 , 8 // length\r
379 , enc_random_b // iv[8]\r
380 , enc_resp // input\r
381 , resp_random_a // output\r
382 );\r
383 if ( memcmp(resp_random_a, random_a, 8) != 0 ) {\r
384 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");\r
385 return 0;\r
386 }\r
387\r
388 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r
389 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x", \r
390 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],\r
391 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);\r
392\r
393 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",\r
394 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],\r
395 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);\r
396\r
397 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",\r
398 random_a[0],random_a[1],random_a[2],random_a[3],\r
399 random_a[4],random_a[5],random_a[6],random_a[7]);\r
400\r
401 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",\r
402 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],\r
403 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);\r
404 }\r
405 return 1;\r
406}\r
407\r
408\r
409#define MFU_MAX_RETRIES 5\r
410int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)\r
411{\r
412 uint16_t len;\r
413 uint8_t bt[2];\r
414 uint8_t receivedAnswer[MAX_FRAME_SIZE];\r
415 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];\r
416 uint8_t retries;\r
417 int result = 0;\r
418\r
419 for (retries = 0; retries < MFU_MAX_RETRIES; retries++) {\r
420 len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
421 if (len == 1) {\r
422 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);\r
423 result = 1;\r
424 continue;\r
425 }\r
426 if (len != 18) {\r
427 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);\r
428 result = 2;\r
429 continue;\r
430 }\r
431\r
432 memcpy(bt, receivedAnswer + 16, 2);\r
433 AppendCrc14443a(receivedAnswer, 16);\r
434 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {\r
435 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");\r
436 result = 3;\r
437 continue;\r
438 }\r
439\r
440 // No errors encountered; don't retry\r
441 result = 0;\r
442 break;\r
443 }\r
444\r
445 if (result != 0) {\r
446 Dbprintf("Cmd Error: too many retries; read failed");\r
447 return result;\r
448 }\r
449\r
450 memcpy(blockData, receivedAnswer, 14);\r
451 return 0;\r
452}\r
453\r
454int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) \r
455{\r
456 // variables\r
457 uint16_t len, i; \r
458 uint32_t pos;\r
459 uint8_t par[3] = {0}; // enough for 18 Bytes to send\r
460 byte_t res;\r
461 \r
462 uint8_t d_block[18], d_block_enc[18];\r
463 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
464 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
465 \r
466 // command MIFARE_CLASSIC_WRITEBLOCK\r
467 len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
468\r
469 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK\r
470 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r
471 return 1;\r
472 }\r
473 \r
474 memcpy(d_block, blockData, 16);\r
475 AppendCrc14443a(d_block, 16);\r
476 \r
477 // crypto\r
478 for (pos = 0; pos < 18; pos++)\r
479 {\r
480 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];\r
481 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));\r
482 } \r
483\r
484 ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);\r
485\r
486 // Receive the response\r
487 len = ReaderReceive(receivedAnswer, receivedAnswerPar); \r
488\r
489 res = 0;\r
490 for (i = 0; i < 4; i++)\r
491 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;\r
492\r
493 if ((len != 1) || (res != 0x0A)) {\r
494 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res); \r
495 return 2;\r
496 }\r
497 \r
498 return 0;\r
499}\r
500\r
501/* // command not needed, but left for future testing\r
502int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) \r
503{\r
504 uint16_t len;\r
505 uint8_t par[3] = {0}; // enough for 18 parity bits\r
506 uint8_t d_block[18] = {0x00};\r
507 uint8_t receivedAnswer[MAX_FRAME_SIZE];\r
508 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];\r
509\r
510 len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
511\r
512 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK\r
513 if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
514 Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);\r
515 return 1;\r
516 }\r
517\r
518 memcpy(d_block, blockData, 16);\r
519 AppendCrc14443a(d_block, 16);\r
520\r
521 ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);\r
522\r
523 len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r
524\r
525 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK\r
526 if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
527 Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);\r
528 return 2;\r
529 }\r
530 return 0;\r
531}\r
532*/\r
533\r
534int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)\r
535{\r
536 uint16_t len;\r
537 uint8_t d_block[5] = {0x00};\r
538 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
539 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
540\r
541 // command MIFARE_CLASSIC_WRITEBLOCK\r
542 d_block[0]= blockNo;\r
543 memcpy(d_block+1,blockData,4);\r
544 //AppendCrc14443a(d_block, 6);\r
545\r
546 len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);\r
547\r
548 if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK\r
549 if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
550 Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);\r
551 return 1;\r
552 }\r
553 return 0;\r
554}\r
555\r
556int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) \r
557{\r
558 uint16_t len; \r
559 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
560 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
561\r
562 len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);\r
563 if (len != 0) {\r
564 if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
565 Dbprintf("halt error. response len: %x", len); \r
566 return 1;\r
567 }\r
568\r
569 return 0;\r
570}\r
571\r
572int mifare_ultra_halt()\r
573{\r
574 uint16_t len;\r
575 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
576 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
577 \r
578 len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);\r
579 if (len != 0) {\r
580 if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
581 Dbprintf("halt error. response len: %x", len);\r
582 return 1;\r
583 }\r
584 return 0;\r
585}\r
586\r
587\r
588// Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),\r
589// plus evtl. 8 sectors with 16 blocks each (4k cards)\r
590uint8_t NumBlocksPerSector(uint8_t sectorNo) \r
591{\r
592 if (sectorNo < 32) \r
593 return 4;\r
594 else\r
595 return 16;\r
596}\r
597\r
598uint8_t FirstBlockOfSector(uint8_t sectorNo) \r
599{\r
600 if (sectorNo < 32)\r
601 return sectorNo * 4;\r
602 else\r
603 return 32*4 + (sectorNo - 32) * 16;\r
604 \r
605}\r
606\r
607uint8_t SectorTrailer(uint8_t blockNo)\r
608{\r
609 if (blockNo < 32*4) {\r
610 return (blockNo | 0x03);\r
611 } else {\r
612 return (blockNo | 0x0f);\r
613 }\r
614}\r
615\r
616bool IsSectorTrailer(uint8_t blockNo)\r
617{\r
618 return (blockNo == SectorTrailer(blockNo));\r
619}\r
620\r
621// work with emulator memory\r
622void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {\r
623 uint8_t* emCARD = BigBuf_get_EM_addr();\r
624 memcpy(emCARD + blockNum * 16, data, blocksCount * 16);\r
625}\r
626\r
627void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
628 uint8_t* emCARD = BigBuf_get_EM_addr();\r
629 memcpy(data, emCARD + blockNum * 16, blocksCount * 16);\r
630}\r
631\r
632void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {\r
633 uint8_t* emCARD = BigBuf_get_EM_addr();\r
634 memcpy(data, emCARD + bytePtr, byteCount);\r
635}\r
636\r
637int emlCheckValBl(int blockNum) {\r
638 uint8_t* emCARD = BigBuf_get_EM_addr();\r
639 uint8_t* data = emCARD + blockNum * 16;\r
640\r
641 if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||\r
642 (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||\r
643 (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||\r
644 (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||\r
645 (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||\r
646 (data[12] != (data[15] ^ 0xff))\r
647 ) \r
648 return 1;\r
649 return 0;\r
650}\r
651\r
652int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {\r
653 uint8_t* emCARD = BigBuf_get_EM_addr();\r
654 uint8_t* data = emCARD + blockNum * 16;\r
655 \r
656 if (emlCheckValBl(blockNum)) {\r
657 return 1;\r
658 }\r
659 \r
660 memcpy(blReg, data, 4);\r
661 *blBlock = data[12];\r
662 return 0;\r
663}\r
664\r
665int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {\r
666 uint8_t* emCARD = BigBuf_get_EM_addr();\r
667 uint8_t* data = emCARD + blockNum * 16;\r
668 \r
669 memcpy(data + 0, &blReg, 4);\r
670 memcpy(data + 8, &blReg, 4);\r
671 blReg = blReg ^ 0xffffffff;\r
672 memcpy(data + 4, &blReg, 4);\r
673 \r
674 data[12] = blBlock;\r
675 data[13] = blBlock ^ 0xff;\r
676 data[14] = blBlock;\r
677 data[15] = blBlock ^ 0xff;\r
678 \r
679 return 0;\r
680}\r
681\r
682uint64_t emlGetKey(int sectorNum, int keyType) {\r
683 uint8_t key[6];\r
684 uint8_t* emCARD = BigBuf_get_EM_addr();\r
685 \r
686 memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);\r
687 return bytes_to_num(key, 6);\r
688}\r
689\r
690void emlClearMem(void) {\r
691 int b;\r
692 \r
693 const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};\r
694 const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};\r
695 uint8_t* emCARD = BigBuf_get_EM_addr();\r
696 \r
697 memset(emCARD, 0, CARD_MEMORY_SIZE);\r
698 \r
699 // fill sectors trailer data\r
700 for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {\r
701 emlSetMem((uint8_t *)trailer, b , 1);\r
702 } \r
703\r
704 // uid\r
705 emlSetMem((uint8_t *)uid, 0, 1);\r
706 return;\r
707}\r
708\r
709\r
710// Mifare desfire commands\r
711int 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
712{\r
713 uint8_t dcmd[5] = {0x00};\r
714 dcmd[0] = cmd;\r
715 memcpy(dcmd+1,data,2);\r
716 AppendCrc14443a(dcmd, 3);\r
717 \r
718 ReaderTransmit(dcmd, sizeof(dcmd), NULL);\r
719 int len = ReaderReceive(answer, answer_parity);\r
720 if(!len) {\r
721 if (MF_DBGLEVEL >= MF_DBG_ERROR) \r
722 Dbprintf("Authentication failed. Card timeout.");\r
723 return 1;\r
724 }\r
725 return len;\r
726}\r
727\r
728int 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
729{\r
730 uint8_t dcmd[20] = {0x00};\r
731 dcmd[0] = cmd;\r
732 memcpy(dcmd+1,data,17);\r
733 AppendCrc14443a(dcmd, 18);\r
734\r
735 ReaderTransmit(dcmd, sizeof(dcmd), NULL);\r
736 int len = ReaderReceive(answer, answer_parity);\r
737 if(!len){\r
738 if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
739 Dbprintf("Authentication failed. Card timeout.");\r
740 return 1;\r
741 }\r
742 return len;\r
743}\r
744\r
745int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){\r
746\r
747 int len;\r
748 // load key, keynumber\r
749 uint8_t data[2]={0x0a, 0x00};\r
750 uint8_t receivedAnswer[MAX_FRAME_SIZE];\r
751 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];\r
752 \r
753 len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);\r
754 if (len == 1) {\r
755 if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
756 Dbprintf("Cmd Error: %02x", receivedAnswer[0]);\r
757 return 1;\r
758 }\r
759 \r
760 if (len == 12) {\r
761 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r
762 Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",\r
763 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],\r
764 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],\r
765 receivedAnswer[10],receivedAnswer[11]);\r
766 }\r
767 memcpy(blockData, receivedAnswer, 12);\r
768 return 0;\r
769 }\r
770 return 1;\r
771}\r
772\r
773int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){\r
774\r
775 int len;\r
776 uint8_t data[17] = {0x00};\r
777 data[0] = 0xAF;\r
778 memcpy(data+1,key,16);\r
779 \r
780 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
781 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
782 \r
783 len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);\r
784 \r
785 if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {\r
786 if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
787 Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);\r
788 return 1;\r
789 }\r
790 \r
791 if (len == 12){\r
792 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r
793 Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",\r
794 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],\r
795 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],\r
796 receivedAnswer[10],receivedAnswer[11]);\r
797 }\r
798 memcpy(blockData, receivedAnswer, 12);\r
799 return 0;\r
800 }\r
801 return 1;\r
802}\r
803\r
804//-----------------------------------------------------------------------------\r
805// MIFARE check keys\r
806//\r
807//-----------------------------------------------------------------------------\r
808// one key check\r
809int MifareChkBlockKey(uint8_t *uid, uint32_t *cuid, uint8_t *cascade_levels, uint64_t ui64Key, uint8_t blockNo, uint8_t keyType, uint8_t debugLevel) {\r
810\r
811 struct Crypto1State mpcs = {0, 0};\r
812 struct Crypto1State *pcs;\r
813 pcs = &mpcs;\r
814\r
815 // Iceman: use piwi's faster nonce collecting part in hardnested.\r
816 if (*cascade_levels == 0) { // need a full select cycle to get the uid first\r
817 iso14a_card_select_t card_info;\r
818 if(!iso14443a_select_card(uid, &card_info, cuid, true, 0, true)) {\r
819 if (debugLevel >= 1) Dbprintf("ChkKeys: Can't select card");\r
820 return 1;\r
821 }\r
822 switch (card_info.uidlen) {\r
823 case 4 : *cascade_levels = 1; break;\r
824 case 7 : *cascade_levels = 2; break;\r
825 case 10: *cascade_levels = 3; break;\r
826 default: break;\r
827 }\r
828 } else { // no need for anticollision. We can directly select the card\r
829 if(!iso14443a_select_card(uid, NULL, NULL, false, *cascade_levels, true)) {\r
830 if (debugLevel >= 1) Dbprintf("ChkKeys: Can't select card (UID) lvl=%d", *cascade_levels);\r
831 return 1;\r
832 }\r
833 }\r
834 \r
835 if(mifare_classic_auth(pcs, *cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {\r
836// SpinDelayUs(AUTHENTICATION_TIMEOUT); // it not needs because mifare_classic_auth have timeout from iso14a_set_timeout()\r
837 return 2;\r
838 } else {\r
839/* // let it be here. it like halt command, but maybe it will work in some strange cases\r
840 uint8_t dummy_answer = 0;\r
841 ReaderTransmit(&dummy_answer, 1, NULL);\r
842 int timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT; \r
843 // wait for the card to become ready again\r
844 while(GetCountSspClk() < timeout) {};\r
845*/\r
846 // it needs after success authentication\r
847 mifare_classic_halt(pcs, *cuid);\r
848 }\r
849 \r
850 return 0;\r
851}\r
852\r
853// multi key check\r
854int MifareChkBlockKeys(uint8_t *keys, uint8_t keyCount, uint8_t blockNo, uint8_t keyType, uint8_t debugLevel) {\r
855 uint8_t uid[10];\r
856 uint32_t cuid = 0;\r
857 uint8_t cascade_levels = 0;\r
858 uint64_t ui64Key = 0;\r
859\r
860 int retryCount = 0;\r
861 for (uint8_t i = 0; i < keyCount; i++) {\r
862\r
863 // Allow button press / usb cmd to interrupt device\r
864 if (BUTTON_PRESS() && !usb_poll_validate_length()) { \r
865 Dbprintf("ChkKeys: Cancel operation. Exit...");\r
866 return -2;\r
867 }\r
868\r
869 ui64Key = bytes_to_num(keys + i * 6, 6);\r
870 int res = MifareChkBlockKey(uid, &cuid, &cascade_levels, ui64Key, blockNo, keyType, debugLevel);\r
871 \r
872 // can't select\r
873 if (res == 1) {\r
874 retryCount++;\r
875 if (retryCount >= 5) {\r
876 Dbprintf("ChkKeys: block=%d key=%d. Can't select. Exit...", blockNo, keyType);\r
877 return -1;\r
878 }\r
879 --i; // try the same key once again\r
880\r
881 SpinDelay(20);\r
882// Dbprintf("ChkKeys: block=%d key=%d. Try the same key once again...", blockNo, keyType);\r
883 continue;\r
884 }\r
885 \r
886 // can't authenticate\r
887 if (res == 2) {\r
888 retryCount = 0;\r
889 continue; // can't auth. wrong key.\r
890 }\r
891\r
892 return i + 1;\r
893 }\r
894 \r
895 return 0;\r
896}\r
897\r
898// multisector multikey check\r
899int MifareMultisectorChk(uint8_t *keys, uint8_t keyCount, uint8_t SectorCount, uint8_t keyType, uint8_t debugLevel, TKeyIndex *keyIndex) {\r
900 int res = 0;\r
901 \r
902// int clk = GetCountSspClk();\r
903\r
904 for(int sc = 0; sc < SectorCount; sc++){\r
905 WDT_HIT();\r
906\r
907 int keyAB = keyType;\r
908 do {\r
909 res = MifareChkBlockKeys(keys, keyCount, FirstBlockOfSector(sc), keyAB & 0x01, debugLevel);\r
910 if (res < 0){\r
911 return res;\r
912 }\r
913 if (res > 0){\r
914 (*keyIndex)[keyAB & 0x01][sc] = res;\r
915 }\r
916 } while(--keyAB > 0);\r
917 }\r
918 \r
919// Dbprintf("%d %d", GetCountSspClk() - clk, (GetCountSspClk() - clk)/(SectorCount*keyCount*(keyType==2?2:1)));\r
920 \r
921 return 0;\r
922}\r
923\r
924\r
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