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