git.zerfleddert.de Git - proxmark3-svn/blob

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 //-----------------------------------------------------------------------------

12 #include "proxmark3.h"

13 #include "apps.h"

14 #include "util.h"

15 #include "string.h"

17 #include "iso14443crc.h"

18 #include "iso14443a.h"

19 #include "crapto1.h"

20 #include "mifareutil.h"

21 #include "des.h"

23 int MF_DBGLEVEL = MF_DBG_ALL;

25 // crypto1 helpers

 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){

27 uint8_t bt = 0;

28 int i;

         if (len != 1) {

                 for (i = 0; i < len; i++)

                         data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];

33 } else {

34 bt = 0;

                 for (i = 0; i < 4; i++)

                         bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;

38 data[0] = bt;

39 }

40 return;

41 }

 void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {

44 uint8_t bt = 0;

45 int i;

         par[0] = 0;

         for (i = 0; i < len; i++) {

49 bt = data[i];

                 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];

                 if((i&0x0007) == 0) 

                         par[i>>3] = 0;

                 par[i>>3] |= (((filter(pcs->odd) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007)));

54 }

55 return;

56 }

 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {

59 uint8_t bt = 0;

60 int i;

         for (i = 0; i < 4; i++)

                 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;

65 return bt;

66 }

68 // send commands

 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)

70 {

         return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing);

72 }

 int 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)

75 {

76 uint8_t dcmd[8];

77 dcmd[0] = cmd;

     dcmd[1] = data[0];

         dcmd[2] = data[1];

         dcmd[3] = data[2];

         dcmd[4] = data[3];

         dcmd[5] = data[4];

         AppendCrc14443a(dcmd, 6);

         ReaderTransmit(dcmd, sizeof(dcmd), NULL);

         int len = ReaderReceive(answer, answer_parity);

86 if(!len) {

                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");

88 return 2;

89 }

90 return len;

91 }

 int 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)

94 {

95 uint8_t dcmd[19];

96 int len;

97 dcmd[0] = cmd;

     memcpy(dcmd+1,data,16);

         AppendCrc14443a(dcmd, 17);

100

         ReaderTransmit(dcmd, sizeof(dcmd), timing);

         len = ReaderReceive(answer, answer_parity);

103 if(!len) {

         if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("Authentication failed. Card timeout.");

         len = ReaderReceive(answer,answer_parity);

106 }

     if(len==1)  {

                 if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("NAK - Authentication failed.");

109 return 1;

110 }

111 return len;

112 }

113

 int mifare_sendcmd_short_mfuev1auth(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t *data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)

115 {

116 uint8_t dcmd[7];

117 int len;

118 dcmd[0] = cmd;

     memcpy(dcmd+1,data,4);

         AppendCrc14443a(dcmd, 5);

121

         ReaderTransmit(dcmd, sizeof(dcmd), timing);

         len = ReaderReceive(answer, answer_parity);

124 if(!len) {

         if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("Authentication failed. Card timeout.");

         len = ReaderReceive(answer,answer_parity);

127 }

     if(len==1)  {

                 if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("NAK - Authentication failed.");

130 return 1;

131 }

132 return len;

133 }

134

 int 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)

136 {

         uint8_t dcmd[4], ecmd[4];

138 uint16_t pos, res;

         uint8_t par[1];                 // 1 Byte parity is enough here

140 dcmd[0] = cmd;

141 dcmd[1] = data;

         AppendCrc14443a(dcmd, 2);

143

         memcpy(ecmd, dcmd, sizeof(dcmd));

145

146 if (crypted) {

                 par[0] = 0;

                 for (pos = 0; pos < 4; pos++)

149 {

                         ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];

                         par[0] |= (((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos));

152 }

153

                 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);

155

156 } else {

                 ReaderTransmit(dcmd, sizeof(dcmd), timing);

158 }

159

         int len = ReaderReceive(answer, par);

161

         if (answer_parity) *answer_parity = par[0];

163

164 if (crypted == CRYPT_ALL) {

                 if (len == 1) {

166 res = 0;

                         for (pos = 0; pos < 4; pos++)

                                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;

169

170 answer[0] = res;

171

172 } else {

                         for (pos = 0; pos < len; pos++)

174 {

                                 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];

176 }

177 }

178 }

179

180 return len;

181 }

182

183 // mifare classic commands

 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) 

185 {

         return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);

187 }

188

 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) 

190 {

191 // variables

192 int len;

193 uint32_t pos;

194 uint8_t tmp4[4];

         uint8_t par[1] = {0x00};

196 byte_t nr[4];

197 uint32_t nt, ntpp; // Supplied tag nonce

198

         uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };

200 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];

201 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];

202

203 // Transmit MIFARE_CLASSIC_AUTH

         len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);

         if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);  

         if (len != 4) return 1;

207

208 // "random" reader nonce:

         nr[0] = 0x55;

         nr[1] = 0x41;

         nr[2] = 0x49;

         nr[3] = 0x92; 

213

214 // Save the tag nonce (nt)

         nt = bytes_to_num(receivedAnswer, 4);

216

217 // ----------------------------- crypto1 create

218 if (isNested)

219 crypto1_destroy(pcs);

220

221 // Init cipher with key

222 crypto1_create(pcs, ui64Key);

223

224 if (isNested == AUTH_NESTED) {

225 // decrypt nt with help of new key

                 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;

227 } else {

228 // Load (plain) uid^nt into the cipher

                 crypto1_word(pcs, nt ^ uid, 0);

230 }

231

232 // some statistic

         if (!ntptr && (MF_DBGLEVEL >= 3))

                 Dbprintf("auth uid: %08x nt: %08x", uid, nt);  

235

236 // save Nt

237 if (ntptr)

238 *ntptr = nt;

239

240 // Generate (encrypted) nr+parity by loading it into the cipher (Nr)

         par[0] = 0;

         for (pos = 0; pos < 4; pos++)

243 {

                 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];

                 par[0] |= (((filter(pcs->odd) ^ oddparity(nr[pos])) & 0x01) << (7-pos));

246 }

247

248 // Skip 32 bits in pseudo random generator

         nt = prng_successor(nt,32);

250

251 // ar+parity

         for (pos = 4; pos < 8; pos++)

253 {

                 nt = prng_successor(nt,8);

                 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);

                 par[0] |= (((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) << (7-pos));

257 }

258

259 // Transmit reader nonce and reader answer

         ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);

261

262 // Receive 4 byte tag answer

         len = ReaderReceive(receivedAnswer, receivedAnswerPar);

264 if (!len)

265 {

                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");

267 return 2;

268 }

269

         memcpy(tmp4, receivedAnswer, 4);

         ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);

272

         if (ntpp != bytes_to_num(tmp4, 4)) {

                 if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Error card response.");

275 return 3;

276 }

277

278 return 0;

279 }

280

 int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) 

282 {

283 // variables

284 int len;

285 uint8_t bt[2];

286

287 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];

288 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];

289

290 // command MIFARE_CLASSIC_READBLOCK

         len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);

         if (len == 1) {

                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  

294 return 1;

295 }

         if (len != 18) {

                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: card timeout. len: %x", len);  

298 return 2;

299 }

300

         memcpy(bt, receivedAnswer + 16, 2);

         AppendCrc14443a(receivedAnswer, 16);

         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {

                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd CRC response error.");  

305 return 3;

306 }

307

         memcpy(blockData, receivedAnswer, 16);

309 return 0;

310 }

311

312 // mifare ultralight commands

 int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){

314

315 uint16_t len;

316 uint8_t resp[4];

317 uint8_t respPar[1];

         uint8_t key[4] = {0x00};

         memcpy(key, keybytes, 4);

320

         Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);

         len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);

         if (len != 4) {

                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);

325 return 0;

326 }

327

328 if (MF_DBGLEVEL >= MF_DBG_EXTENDED)

                 Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);

330

         memcpy(pack, resp, 4);

332 return 1;

333 }

334

 int mifare_ultra_auth(uint8_t *keybytes){

336

337 /// 3des2k

338

         uint8_t random_a[8] = {1,1,1,1,1,1,1,1};

         uint8_t random_b[8] = {0x00};

         uint8_t enc_random_b[8] = {0x00};

         uint8_t rnd_ab[16] = {0x00};

         uint8_t IV[8] = {0x00};

         uint8_t key[16] = {0x00};

         memcpy(key, keybytes, 16);

346

347 uint16_t len;

         uint8_t resp[19] = {0x00};

         uint8_t respPar[3] = {0,0,0};

350

351 // REQUEST AUTHENTICATION

         len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);

         if (len != 11) {

                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);

355 return 0;

356 }

357

358 // tag nonce.

         memcpy(enc_random_b,resp+1,8);

360

361 // decrypt nonce.

         tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );

         rol(random_b,8);

         memcpy(rnd_ab  ,random_a,8);

         memcpy(rnd_ab+8,random_b,8);

366

367 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {

368 Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",

                         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]);

370

371 Dbprintf(" B: %02x %02x %02x %02x %02x %02x %02x %02x",

                         random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);

373

374 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",

                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);

376

377 Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",

                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );

379 }

380

381 // encrypt out, in, length, key, iv

         tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);

383

         len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);

         if (len != 11) {

                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);

387 return 0;

388 }

389

         uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };

         uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };

         memcpy(enc_resp, resp+1, 8);

393

394 // decrypt out, in, length, key, iv

         tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);

         if ( memcmp(resp_random_a, random_a, 8) != 0 ) {

                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");

398 return 0;

399 }

400

401 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {

402 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",

                                 rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],

                                 rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);

405

406 Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",

                                 rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],

                                 rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);

409

410 Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",

                                 random_a[0],random_a[1],random_a[2],random_a[3],

                                 random_a[4],random_a[5],random_a[6],random_a[7]);

413

414 Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",

                                 resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],

                                 resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);

417 }

418 return 1;

419 }

420

 int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)

422 {

423 uint16_t len;

424 uint8_t bt[2];

425 uint8_t receivedAnswer[MAX_FRAME_SIZE];

426 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];

427

         len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);

         if (len == 1) {

                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);

431 return 1;

432 }

         if (len != 18) {

                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);

435 return 2;

436 }

437

         memcpy(bt, receivedAnswer + 16, 2);

         AppendCrc14443a(receivedAnswer, 16);

         if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {

                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");

442 return 3;

443 }

444

         memcpy(blockData, receivedAnswer, 14);

446 return 0;

447 }

448

 int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) 

450 {

451 // variables

452 uint16_t len, i;

453 uint32_t pos;

         uint8_t par[3] = {0};           // enough for 18 Bytes to send

455 byte_t res;

456

         uint8_t d_block[18], d_block_enc[18];

458 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];

459 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];

460

461 // command MIFARE_CLASSIC_WRITEBLOCK

         len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);

463

         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK

                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  

466 return 1;

467 }

468

         memcpy(d_block, blockData, 16);

         AppendCrc14443a(d_block, 16);

471

472 // crypto

         for (pos = 0; pos < 18; pos++)

474 {

                 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];

                 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));

477 }

478

         ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);

480

481 // Receive the response

         len = ReaderReceive(receivedAnswer, receivedAnswerPar); 

483

484 res = 0;

         for (i = 0; i < 4; i++)

                 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;

487

         if ((len != 1) || (res != 0x0A)) {

                 if (MF_DBGLEVEL >= 1)   Dbprintf("Cmd send data2 Error: %02x", res);  

490 return 2;

491 }

492

493 return 0;

494 }

495

 int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) 

497 {

498 uint16_t len;

         uint8_t par[3] = {0};  // enough for 18 parity bits

         uint8_t d_block[18] = {0x00};

501 uint8_t receivedAnswer[MAX_FRAME_SIZE];

502 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];

503

504 // command MIFARE_CLASSIC_WRITEBLOCK

         len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);

506

         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK

508 if (MF_DBGLEVEL >= MF_DBG_ERROR)

                         Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);

510 return 1;

511 }

512

         memcpy(d_block, blockData, 16);

         AppendCrc14443a(d_block, 16);

515

         ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);

517

         len = ReaderReceive(receivedAnswer, receivedAnswerPar);

519

         if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK

521 if (MF_DBGLEVEL >= MF_DBG_ERROR)

                         Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);

523 return 2;

524 }

525 return 0;

526 }

527

 int mifare_ultra_special_writeblock(uint8_t blockNo, uint8_t *blockData)

529 {

530 uint16_t len;

         uint8_t d_block[8] = {0x00};

532 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];

533 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];

534

535 // command MIFARE_CLASSIC_WRITEBLOCK

536 d_block[0]= blockNo;

         memcpy(d_block+1,blockData,4);

         AppendCrc14443a(d_block, 6);

539

         len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);

541

         if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK

543 if (MF_DBGLEVEL >= MF_DBG_ERROR)

                         Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);

545 return 1;

546 }

547 return 0;

548 }

549

 int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) 

551 {

552 uint16_t len;

553 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];

554 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];

555

         len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);

         if (len != 0) {

558 if (MF_DBGLEVEL >= MF_DBG_ERROR)

                         Dbprintf("halt error. response len: %x", len);  

560 return 1;

561 }

562

563 return 0;

564 }

565

566 int mifare_ultra_halt()

567 {

568 uint16_t len;

569 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];

570 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];

571

         len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);

         if (len != 0) {

574 if (MF_DBGLEVEL >= MF_DBG_ERROR)

                         Dbprintf("halt error. response len: %x", len);

576 return 1;

577 }

578 return 0;

579 }

580

581

582 // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),

583 // plus evtl. 8 sectors with 16 blocks each (4k cards)

 uint8_t NumBlocksPerSector(uint8_t sectorNo) 

585 {

         if (sectorNo < 32) 

587 return 4;

588 else

589 return 16;

590 }

591

 uint8_t FirstBlockOfSector(uint8_t sectorNo) 

593 {

         if (sectorNo < 32)

595 return sectorNo * 4;

596 else

                 return 32*4 + (sectorNo - 32) * 16;

598

599 }

600

601

602 // work with emulator memory

 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {

         uint8_t* emCARD = BigBuf_get_EM_addr();

         memcpy(emCARD + blockNum * 16, data, blocksCount * 16);

606 }

607

 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {

         uint8_t* emCARD = BigBuf_get_EM_addr();

         memcpy(data, emCARD + blockNum * 16, blocksCount * 16);

611 }

612

 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {

         uint8_t* emCARD = BigBuf_get_EM_addr();

         memcpy(data, emCARD + bytePtr, byteCount);

616 }

617

 int emlCheckValBl(int blockNum) {

         uint8_t* emCARD = BigBuf_get_EM_addr();

         uint8_t* data = emCARD + blockNum * 16;

621

         if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||

                         (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||

                         (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||

                         (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||

                         (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||

                         (data[12] != (data[15] ^ 0xff))

628 )

629 return 1;

630 return 0;

631 }

632

 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {

         uint8_t* emCARD = BigBuf_get_EM_addr();

         uint8_t* data = emCARD + blockNum * 16;

636

         if (emlCheckValBl(blockNum)) {

638 return 1;

639 }

640

         memcpy(blReg, data, 4);

         *blBlock = data[12];

643 return 0;

644 }

645

 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {

         uint8_t* emCARD = BigBuf_get_EM_addr();

         uint8_t* data = emCARD + blockNum * 16;

649

         memcpy(data + 0, &blReg, 4);

         memcpy(data + 8, &blReg, 4);

652 blReg = blReg ^ 0xffffffff;

         memcpy(data + 4, &blReg, 4);

654

655 data[12] = blBlock;

         data[13] = blBlock ^ 0xff;

657 data[14] = blBlock;

         data[15] = blBlock ^ 0xff;

659

660 return 0;

661 }

662

 uint64_t emlGetKey(int sectorNum, int keyType) {

664 uint8_t key[6];

         uint8_t* emCARD = BigBuf_get_EM_addr();

666

         memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);

         return bytes_to_num(key, 6);

669 }

670

 void emlClearMem(void) {

672 int b;

673

         const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};

         const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};

         uint8_t* emCARD = BigBuf_get_EM_addr();

677

         memset(emCARD, 0, CARD_MEMORY_SIZE);

679

680 // fill sectors trailer data

         for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {

                 emlSetMem((uint8_t *)trailer, b , 1);

683 }

684

685 // uid

         emlSetMem((uint8_t *)uid, 0, 1);

687 return;

688 }

689

690

691 // Mifare desfire commands

 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)

693 {

     uint8_t dcmd[5] = {0x00};

695 dcmd[0] = cmd;

     memcpy(dcmd+1,data,2);

         AppendCrc14443a(dcmd, 3);

698

         ReaderTransmit(dcmd, sizeof(dcmd), NULL);

         int len = ReaderReceive(answer, answer_parity);

701 if(!len) {

702 if (MF_DBGLEVEL >= MF_DBG_ERROR)

703 Dbprintf("Authentication failed. Card timeout.");

704 return 1;

705 }

706 return len;

707 }

708

 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)

710 {

     uint8_t dcmd[20] = {0x00};

712 dcmd[0] = cmd;

     memcpy(dcmd+1,data,17);

         AppendCrc14443a(dcmd, 18);

715

         ReaderTransmit(dcmd, sizeof(dcmd), NULL);

         int len = ReaderReceive(answer, answer_parity);

718 if(!len){

719 if (MF_DBGLEVEL >= MF_DBG_ERROR)

720 Dbprintf("Authentication failed. Card timeout.");

721 return 1;

722 }

723 return len;

724 }

725

 int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){

727

728 int len;

729 // load key, keynumber

         uint8_t data[2]={0x0a, 0x00};

731 uint8_t receivedAnswer[MAX_FRAME_SIZE];

732 uint8_t receivedAnswerPar[MAX_PARITY_SIZE];

733

         len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);

         if (len == 1) {

736 if (MF_DBGLEVEL >= MF_DBG_ERROR)

                         Dbprintf("Cmd Error: %02x", receivedAnswer[0]);

738 return 1;

739 }

740

         if (len == 12) {

742 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {

743 Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",

                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],

                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],

                                 receivedAnswer[10],receivedAnswer[11]);

747 }

                         memcpy(blockData, receivedAnswer, 12);

749 return 0;

750 }

751 return 1;

752 }

753

 int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){

755

756 int len;

         uint8_t data[17] = {0x00};

         data[0] = 0xAF;

         memcpy(data+1,key,16);

760

761 uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];

762 uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];

763

         len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);

765

         if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {

767 if (MF_DBGLEVEL >= MF_DBG_ERROR)

                         Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);

769 return 1;

770 }

771

         if (len == 12){

773 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {

774 Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",

                                 receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],

                                 receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],

                                 receivedAnswer[10],receivedAnswer[11]);

778 }

                 memcpy(blockData, receivedAnswer, 12);

780 return 0;

781 }

782 return 1;

783 }