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Merge branch 'master' of https://github.com/iceman1001/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 #include "parity.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 |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0;
36 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1;
37 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2;
38 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3;
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 }
57
58 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
59 uint8_t bt = 0;
60 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0;
61 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1;
62 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2;
63 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3;
64 return bt;
65 }
66
67 // send X byte basic commands
68 int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
69 {
70 uint8_t dcmd[data_size+3];
71 dcmd[0] = cmd;
72 memcpy(dcmd+1,data,data_size);
73 AppendCrc14443a(dcmd, data_size+1);
74 ReaderTransmit(dcmd, sizeof(dcmd), timing);
75 int len = ReaderReceive(answer, answer_parity);
76 if(!len) {
77 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("%02X Cmd failed. Card timeout.", cmd);
78 len = ReaderReceive(answer,answer_parity);
79 }
80 return len;
81 }
82
83 // send 2 byte commands
84 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)
85 {
86 uint8_t dcmd[4] = {0x00};
87 uint8_t ecmd[4] = {0x00};
88 uint16_t pos, res;
89 uint8_t par[1] = {0x00}; // 1 Byte parity is enough here
90 dcmd[0] = cmd;
91 dcmd[1] = data;
92 AppendCrc14443a(dcmd, 2);
93
94 memcpy(ecmd, dcmd, sizeof(dcmd));
95
96 if (crypted) {
97 par[0] = 0;
98 for (pos = 0; pos < 4; pos++) {
99 ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
100 par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
101 }
102
103 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
104
105 } else {
106 ReaderTransmit(dcmd, sizeof(dcmd), timing);
107 }
108
109 int len = ReaderReceive(answer, par);
110
111 if (answer_parity) *answer_parity = par[0];
112
113 if (crypted == CRYPT_ALL) {
114 if (len == 1) {
115 res = 0;
116 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;
117 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;
118 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;
119 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3;
120 answer[0] = res;
121
122 } else {
123 for (pos = 0; pos < len; pos++)
124 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
125 }
126 }
127
128 return len;
129 }
130
131 // mifare classic commands
132 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested)
133 {
134 return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
135 }
136
137 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)
138 {
139 // variables
140 int len;
141 uint32_t pos;
142 uint8_t tmp4[4] = {0x00};
143 uint8_t par[1] = {0x00};
144
145 // "random" reader nonce:
146 byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};
147 //byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};
148
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 // Save the tag nonce (nt)
161 nt = bytes_to_num(receivedAnswer, 4);
162
163 // ----------------------------- crypto1 create
164 if (isNested)
165 crypto1_destroy(pcs);
166
167 // Init cipher with key
168 crypto1_create(pcs, ui64Key);
169
170 if (isNested == AUTH_NESTED) {
171 // decrypt nt with help of new key
172 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
173 } else {
174 // Load (plain) uid^nt into the cipher
175 crypto1_word(pcs, nt ^ uid, 0);
176 }
177
178 // some statistic
179 if (!ntptr && (MF_DBGLEVEL >= 3))
180 Dbprintf("auth uid: %08x nt: %08x", uid, nt);
181
182 // save Nt
183 if (ntptr)
184 *ntptr = nt;
185
186 // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
187 par[0] = 0;
188 for (pos = 0; pos < 4; pos++)
189 {
190 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
191 par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
192 }
193
194 // Skip 32 bits in pseudo random generator
195 nt = prng_successor(nt,32);
196
197 // ar+parity
198 for (pos = 4; pos < 8; pos++)
199 {
200 nt = prng_successor(nt,8);
201 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
202 par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));
203 }
204
205 // Transmit reader nonce and reader answer
206 ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
207
208 // Receive 4 byte tag answer
209 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
210 if (!len)
211 {
212 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
213 return 2;
214 }
215
216 memcpy(tmp4, receivedAnswer, 4);
217 ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
218
219 if (ntpp != bytes_to_num(tmp4, 4)) {
220 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");
221 return 3;
222 }
223
224 return 0;
225 }
226
227 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
228 {
229 // variables
230 int len;
231 uint8_t bt[2] = {0x00};
232
233 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
234 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
235
236 // command MIFARE_CLASSIC_READBLOCK
237 len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
238 if (len == 1) {
239 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
240 return 1;
241 }
242 if (len != 18) {
243 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len);
244 return 2;
245 }
246
247 memcpy(bt, receivedAnswer + 16, 2);
248 AppendCrc14443a(receivedAnswer, 16);
249 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
250 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error.");
251 return 3;
252 }
253
254 memcpy(blockData, receivedAnswer, 16);
255 return 0;
256 }
257
258 // mifare ultralight commands
259 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
260
261 uint16_t len;
262 uint8_t resp[4] = {0x00};
263 uint8_t respPar[1] = {0x00};
264 uint8_t key[4] = {0x00};
265 memcpy(key, keybytes, 4);
266
267 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
268 Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
269
270 len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
271
272 if (len != 4) {
273 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
274 return 0;
275 }
276
277 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
278 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
279
280 memcpy(pack, resp, 4);
281 return 1;
282 }
283
284 int mifare_ultra_auth(uint8_t *keybytes){
285
286 /// 3des2k
287
288 uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
289 uint8_t random_b[8] = {0x00};
290 uint8_t enc_random_b[8] = {0x00};
291 uint8_t rnd_ab[16] = {0x00};
292 uint8_t IV[8] = {0x00};
293 uint8_t key[16] = {0x00};
294 memcpy(key, keybytes, 16);
295
296 uint16_t len;
297 uint8_t resp[19] = {0x00};
298 uint8_t respPar[3] = {0,0,0};
299
300 // REQUEST AUTHENTICATION
301 len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
302 if (len != 11) {
303 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
304 return 0;
305 }
306
307 // tag nonce.
308 memcpy(enc_random_b,resp+1,8);
309
310 // decrypt nonce.
311 tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
312 rol(random_b,8);
313 memcpy(rnd_ab ,random_a,8);
314 memcpy(rnd_ab+8,random_b,8);
315
316 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
317 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
318 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]);
319
320 Dbprintf(" B: %02x %02x %02x %02x %02x %02x %02x %02x",
321 random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
322
323 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
324 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
325
326 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
327 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
328 }
329
330 // encrypt out, in, length, key, iv
331 tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
332 //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
333 len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
334 if (len != 11) {
335 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
336 return 0;
337 }
338
339 uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
340 uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
341 memcpy(enc_resp, resp+1, 8);
342
343 // decrypt out, in, length, key, iv
344 tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
345 if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
346 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
347 return 0;
348 }
349
350 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
351 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
352 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
353 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
354
355 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
356 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
357 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
358
359 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
360 random_a[0],random_a[1],random_a[2],random_a[3],
361 random_a[4],random_a[5],random_a[6],random_a[7]);
362
363 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
364 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
365 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
366 }
367 return 1;
368 }
369
370 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
371 {
372 uint16_t len;
373 uint8_t bt[2];
374 uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
375 uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
376
377 len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
378 if (len == 1) {
379 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
380 return 1;
381 }
382 if (len != 18) {
383 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
384 return 2;
385 }
386
387 memcpy(bt, receivedAnswer + 16, 2);
388 AppendCrc14443a(receivedAnswer, 16);
389 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
390 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
391 return 3;
392 }
393
394 memcpy(blockData, receivedAnswer, 14);
395 return 0;
396 }
397
398 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
399 {
400 // variables
401 uint16_t len, i;
402 uint32_t pos = 0;
403 uint8_t par[3] = {0x00}; // enough for 18 Bytes to send
404 byte_t res = 0;
405
406 uint8_t d_block[18], d_block_enc[18];
407 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
408 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
409
410 // command MIFARE_CLASSIC_WRITEBLOCK
411 len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
412
413 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
414 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
415 return 1;
416 }
417
418 memcpy(d_block, blockData, 16);
419 AppendCrc14443a(d_block, 16);
420
421 // crypto
422 for (pos = 0; pos < 18; pos++)
423 {
424 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
425 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
426 }
427
428 ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
429
430 // Receive the response
431 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
432
433 res = 0;
434 for (i = 0; i < 4; i++)
435 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
436
437 if ((len != 1) || (res != 0x0A)) {
438 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res);
439 return 2;
440 }
441
442 return 0;
443 }
444
445 /* // command not needed, but left for future testing
446 int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData)
447 {
448 uint16_t len;
449 uint8_t par[3] = {0}; // enough for 18 parity bits
450 uint8_t d_block[18] = {0x00};
451 uint8_t receivedAnswer[MAX_FRAME_SIZE];
452 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
453
454 len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
455
456 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
457 if (MF_DBGLEVEL >= MF_DBG_ERROR)
458 Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
459 return 1;
460 }
461
462 memcpy(d_block, blockData, 16);
463 AppendCrc14443a(d_block, 16);
464
465 ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
466
467 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
468
469 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
470 if (MF_DBGLEVEL >= MF_DBG_ERROR)
471 Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
472 return 2;
473 }
474 return 0;
475 }
476 */
477
478 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
479 {
480 uint16_t len;
481 uint8_t d_block[5] = {0x00};
482 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
483 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
484
485 // command MIFARE_CLASSIC_WRITEBLOCK
486 d_block[0]= blockNo;
487 memcpy(d_block+1,blockData,4);
488 //AppendCrc14443a(d_block, 6);
489
490 len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);
491
492 if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK
493 if (MF_DBGLEVEL >= MF_DBG_ERROR)
494 Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
495 return 1;
496 }
497 return 0;
498 }
499 int mifare_classic_halt_ex(struct Crypto1State *pcs) {
500 uint16_t len;
501 uint8_t receivedAnswer[4] = {0x00};
502 uint8_t receivedAnswerPar[4] = {0x00};
503
504 len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
505 if (len != 0) {
506 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);
507 return 1;
508 }
509 return 0;
510 }
511 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {
512 return mifare_classic_halt_ex(pcs);
513 }
514
515 int mifare_ultra_halt()
516 {
517 uint16_t len;
518 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
519 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
520
521 len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
522 if (len != 0) {
523 if (MF_DBGLEVEL >= MF_DBG_ERROR)
524 Dbprintf("halt error. response len: %x", len);
525 return 1;
526 }
527 return 0;
528 }
529
530
531 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
532 // plus evtl. 8 sectors with 16 blocks each (4k cards)
533 uint8_t NumBlocksPerSector(uint8_t sectorNo)
534 {
535 if (sectorNo < 32)
536 return 4;
537 return 16;
538 }
539
540 uint8_t FirstBlockOfSector(uint8_t sectorNo)
541 {
542 if (sectorNo < 32)
543 return sectorNo * 4;
544 else
545 return 32*4 + (sectorNo - 32) * 16;
546
547 }
548
549
550 // work with emulator memory
551 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
552 emlSetMem_xt(data, blockNum, blocksCount, 16);
553 }
554
555 void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
556 uint8_t* emCARD = BigBuf_get_EM_addr();
557 memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);
558 }
559
560 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
561 uint8_t* emCARD = BigBuf_get_EM_addr();
562 memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
563 }
564
565 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
566 uint8_t* emCARD = BigBuf_get_EM_addr();
567 memcpy(data, emCARD + bytePtr, byteCount);
568 }
569
570 int emlCheckValBl(int blockNum) {
571 uint8_t* emCARD = BigBuf_get_EM_addr();
572 uint8_t* data = emCARD + blockNum * 16;
573
574 if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
575 (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
576 (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
577 (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
578 (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
579 (data[12] != (data[15] ^ 0xff))
580 )
581 return 1;
582 return 0;
583 }
584
585 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
586 uint8_t* emCARD = BigBuf_get_EM_addr();
587 uint8_t* data = emCARD + blockNum * 16;
588
589 if (emlCheckValBl(blockNum))
590 return 1;
591
592 memcpy(blReg, data, 4);
593 *blBlock = data[12];
594 return 0;
595 }
596
597 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
598 uint8_t* emCARD = BigBuf_get_EM_addr();
599 uint8_t* data = emCARD + blockNum * 16;
600
601 memcpy(data + 0, &blReg, 4);
602 memcpy(data + 8, &blReg, 4);
603 blReg = blReg ^ 0xffffffff;
604 memcpy(data + 4, &blReg, 4);
605
606 data[12] = blBlock;
607 data[13] = blBlock ^ 0xff;
608 data[14] = blBlock;
609 data[15] = blBlock ^ 0xff;
610
611 return 0;
612 }
613
614 uint64_t emlGetKey(int sectorNum, int keyType) {
615 uint8_t key[6] = {0x00};
616 uint8_t* emCARD = BigBuf_get_EM_addr();
617
618 memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
619 return bytes_to_num(key, 6);
620 }
621
622 void emlClearMem(void) {
623 int b;
624
625 const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
626 const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
627 uint8_t* emCARD = BigBuf_get_EM_addr();
628
629 memset(emCARD, 0, CARD_MEMORY_SIZE);
630
631 // fill sectors trailer data
632 for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
633 emlSetMem((uint8_t *)trailer, b , 1);
634 }
635
636 // uid
637 emlSetMem((uint8_t *)uid, 0, 1);
638 return;
639 }
640
641
642 // Mifare desfire commands
643 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)
644 {
645 uint8_t dcmd[5] = {0x00};
646 dcmd[0] = cmd;
647 memcpy(dcmd+1,data,2);
648 AppendCrc14443a(dcmd, 3);
649
650 ReaderTransmit(dcmd, sizeof(dcmd), NULL);
651 int len = ReaderReceive(answer, answer_parity);
652 if(!len) {
653 if (MF_DBGLEVEL >= MF_DBG_ERROR)
654 Dbprintf("Authentication failed. Card timeout.");
655 return 1;
656 }
657 return len;
658 }
659
660 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)
661 {
662 uint8_t dcmd[20] = {0x00};
663 dcmd[0] = cmd;
664 memcpy(dcmd+1,data,17);
665 AppendCrc14443a(dcmd, 18);
666
667 ReaderTransmit(dcmd, sizeof(dcmd), NULL);
668 int len = ReaderReceive(answer, answer_parity);
669 if(!len){
670 if (MF_DBGLEVEL >= MF_DBG_ERROR)
671 Dbprintf("Authentication failed. Card timeout.");
672 return 1;
673 }
674 return len;
675 }
676
677 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
678
679 int len;
680 // load key, keynumber
681 uint8_t data[2]={0x0a, 0x00};
682 uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
683 uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
684
685 len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
686 if (len == 1) {
687 if (MF_DBGLEVEL >= MF_DBG_ERROR)
688 Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
689 return 1;
690 }
691
692 if (len == 12) {
693 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
694 Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
695 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
696 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
697 receivedAnswer[10],receivedAnswer[11]);
698 }
699 memcpy(blockData, receivedAnswer, 12);
700 return 0;
701 }
702 return 1;
703 }
704
705 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
706
707 int len;
708 uint8_t data[17] = {0x00};
709 data[0] = 0xAF;
710 memcpy(data+1,key,16);
711
712 uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
713 uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
714
715 len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
716
717 if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
718 if (MF_DBGLEVEL >= MF_DBG_ERROR)
719 Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
720 return 1;
721 }
722
723 if (len == 12){
724 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
725 Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
726 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
727 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
728 receivedAnswer[10],receivedAnswer[11]);
729 }
730 memcpy(blockData, receivedAnswer, 12);
731 return 0;
732 }
733 return 1;
734 }
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