git.zerfleddert.de Git - proxmark3-svn/blob - armsrc/mifarecmd.c

   1 //-----------------------------------------------------------------------------
   2 // Merlok - June 2011, 2012
   3 // Gerhard de Koning Gans - May 2008
   4 // Hagen Fritsch - June 2010
   5 // Midnitesnake - Dec 2013
   6 // Andy Davies  - Apr 2014
   7 // Iceman - May 2014
   8 //
   9 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
  10 // at your option, any later version. See the LICENSE.txt file for the text of
  11 // the license.
  12 //-----------------------------------------------------------------------------
  13 // Routines to support ISO 14443 type A.
  14 //-----------------------------------------------------------------------------
  15
  16 #include "mifarecmd.h"
  17 #include "apps.h"
  18 #include "util.h"
  19
  20 #include "crc.h"
  21
  22 //-----------------------------------------------------------------------------
  23 // Select, Authenticate, Read a MIFARE tag.
  24 // read block
  25 //-----------------------------------------------------------------------------
  26 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  27 {
  28   // params
  29         uint8_t blockNo = arg0;
  30         uint8_t keyType = arg1;
  31         uint64_t ui64Key = 0;
  32         ui64Key = bytes_to_num(datain, 6);
  33
  34         // variables
  35         byte_t isOK = 0;
  36         byte_t dataoutbuf[16];
  37         uint8_t uid[10];
  38         uint32_t cuid;
  39         struct Crypto1State mpcs = {0, 0};
  40         struct Crypto1State *pcs;
  41         pcs = &mpcs;
  42
  43         // clear trace
  44         clear_trace();
  45         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  46
  47         LED_A_ON();
  48         LED_B_OFF();
  49         LED_C_OFF();
  50
  51         while (true) {
  52                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
  53                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  54                         break;
  55                 };
  56
  57                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  58                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  59                         break;
  60                 };
  61
  62                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  63                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  64                         break;
  65                 };
  66
  67                 if(mifare_classic_halt(pcs, cuid)) {
  68                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  69                         break;
  70                 };
  71
  72                 isOK = 1;
  73                 break;
  74         }
  75
  76         //  ----------------------------- crypto1 destroy
  77         crypto1_destroy(pcs);
  78
  79         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  80
  81         LED_B_ON();
  82         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  83         LED_B_OFF();
  84
  85         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  86         LEDsoff();
  87 }
  88
  89
  90 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  91
  92         bool turnOffField = (arg0 == 1);
  93
  94         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
  95         clear_trace();
  96         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  97
  98         if(!iso14443a_select_card(NULL, NULL, NULL)) {
  99                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 100                 OnError(0);
 101                 return;
 102         };
 103
 104         if(!mifare_ultra_auth(keybytes)){
 105                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 106                 OnError(1);
 107                 return;
 108         }
 109
 110         if (turnOffField) {
 111                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 112                 LEDsoff();
 113         }
 114         cmd_send(CMD_ACK,1,0,0,0,0);
 115 }
 116
 117 // Arg0 = BlockNo,
 118 // Arg1 = UsePwd bool
 119 // datain = PWD bytes,
 120 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 121 {
 122         uint8_t blockNo = arg0;
 123         byte_t dataout[16] = {0x00};
 124         bool useKey = (arg1 == 1); //UL_C
 125         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 126
 127         LEDsoff();
 128         LED_A_ON();
 129         clear_trace();
 130         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 131
 132         int len = iso14443a_select_card(NULL, NULL, NULL);
 133         if(!len) {
 134                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 135                 OnError(1);
 136                 return;
 137         }
 138
 139         // UL-C authentication
 140         if ( useKey ) {
 141                 uint8_t key[16] = {0x00};
 142                 memcpy(key, datain, sizeof(key) );
 143
 144                 if ( !mifare_ultra_auth(key) ) {
 145                         OnError(1);
 146                         return;
 147                 }
 148         }
 149
 150         // UL-EV1 / NTAG authentication
 151         if (usePwd) {
 152                 uint8_t pwd[4] = {0x00};
 153                 memcpy(pwd, datain, 4);
 154                 uint8_t pack[4] = {0,0,0,0};
 155                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 156                         OnError(1);
 157                         return;
 158                 }
 159         }
 160
 161         if( mifare_ultra_readblock(blockNo, dataout) ) {
 162                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 163                 OnError(2);
 164                 return;
 165         }
 166
 167         if( mifare_ultra_halt() ) {
 168                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 169                 OnError(3);
 170                 return;
 171         }
 172
 173     cmd_send(CMD_ACK,1,0,0,dataout,16);
 174         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 175         LEDsoff();
 176 }
 177
 178 //-----------------------------------------------------------------------------
 179 // Select, Authenticate, Read a MIFARE tag.
 180 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 181 //-----------------------------------------------------------------------------
 182 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 183 {
 184   // params
 185         uint8_t sectorNo = arg0;
 186         uint8_t keyType = arg1;
 187         uint64_t ui64Key = 0;
 188         ui64Key = bytes_to_num(datain, 6);
 189
 190         // variables
 191         byte_t isOK = 0;
 192         byte_t dataoutbuf[16 * 16];
 193         uint8_t uid[10];
 194         uint32_t cuid;
 195         struct Crypto1State mpcs = {0, 0};
 196         struct Crypto1State *pcs;
 197         pcs = &mpcs;
 198
 199         // clear trace
 200         clear_trace();
 201
 202         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 203
 204         LED_A_ON();
 205         LED_B_OFF();
 206         LED_C_OFF();
 207
 208         isOK = 1;
 209         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 210                 isOK = 0;
 211                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 212         }
 213
 214
 215         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 216                 isOK = 0;
 217                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 218         }
 219
 220         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 221                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 222                         isOK = 0;
 223                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 224                         break;
 225                 }
 226         }
 227
 228         if(mifare_classic_halt(pcs, cuid)) {
 229                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 230         }
 231
 232         //  ----------------------------- crypto1 destroy
 233         crypto1_destroy(pcs);
 234
 235         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 236
 237         LED_B_ON();
 238         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 239         LED_B_OFF();
 240
 241         // Thats it...
 242         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 243         LEDsoff();
 244 }
 245
 246 // arg0 = blockNo (start)
 247 // arg1 = Pages (number of blocks)
 248 // arg2 = useKey
 249 // datain = KEY bytes
 250 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 251 {
 252         // free eventually allocated BigBuf memory
 253         BigBuf_free();
 254         // clear trace
 255         clear_trace();
 256
 257         // params
 258         uint8_t blockNo = arg0;
 259         uint16_t blocks = arg1;
 260         bool useKey = (arg2 == 1); //UL_C
 261         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 262         uint32_t countblocks = 0;
 263         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 264         if (dataout == NULL){
 265                 Dbprintf("out of memory");
 266                 OnError(1);
 267                 return;
 268         }
 269
 270         LEDsoff();
 271         LED_A_ON();
 272         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 273
 274         int len = iso14443a_select_card(NULL, NULL, NULL);
 275         if (!len) {
 276                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 277                 OnError(1);
 278                 return;
 279         }
 280
 281          // UL-C authentication
 282         if ( useKey ) {
 283                 uint8_t key[16] = {0x00};
 284                 memcpy(key, datain, sizeof(key) );
 285
 286                 if ( !mifare_ultra_auth(key) ) {
 287                         OnError(1);
 288                         return;
 289                 }
 290         }
 291
 292         // UL-EV1 / NTAG authentication
 293         if (usePwd) {
 294                 uint8_t pwd[4] = {0x00};
 295                 memcpy(pwd, datain, sizeof(pwd));
 296                 uint8_t pack[4] = {0,0,0,0};
 297
 298                 if (!mifare_ul_ev1_auth(pwd, pack)){
 299                         OnError(1);
 300                         return;
 301                 }
 302         }
 303
 304         for (int i = 0; i < blocks; i++){
 305                 if ((i*4) + 4 > CARD_MEMORY_SIZE) {
 306                         Dbprintf("Data exceeds buffer!!");
 307                         break;
 308                 }
 309
 310                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 311
 312                 if (len) {
 313                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 314                         // if no blocks read - error out
 315                         if (i==0){
 316                         OnError(2);
 317                         return;
 318                         } else {
 319                                 //stop at last successful read block and return what we got
 320                                 break;
 321                         }
 322                 } else {
 323                         countblocks++;
 324                 }
 325         }
 326
 327         len = mifare_ultra_halt();
 328         if (len) {
 329                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 330                 OnError(3);
 331                 return;
 332         }
 333
 334         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 335
 336         countblocks *= 4;
 337         cmd_send(CMD_ACK, 1, countblocks, countblocks, 0, 0);
 338         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 339         LEDsoff();
 340 }
 341
 342 //-----------------------------------------------------------------------------
 343 // Select, Authenticate, Write a MIFARE tag.
 344 // read block
 345 //-----------------------------------------------------------------------------
 346 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 347 {
 348         // params
 349         uint8_t blockNo = arg0;
 350         uint8_t keyType = arg1;
 351         uint64_t ui64Key = 0;
 352         byte_t blockdata[16];
 353
 354         ui64Key = bytes_to_num(datain, 6);
 355         memcpy(blockdata, datain + 10, 16);
 356
 357         // variables
 358         byte_t isOK = 0;
 359         uint8_t uid[10];
 360         uint32_t cuid;
 361         struct Crypto1State mpcs = {0, 0};
 362         struct Crypto1State *pcs;
 363         pcs = &mpcs;
 364
 365         // clear trace
 366         clear_trace();
 367
 368         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 369
 370         LED_A_ON();
 371         LED_B_OFF();
 372         LED_C_OFF();
 373
 374         while (true) {
 375                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 376                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 377                         break;
 378                 };
 379
 380                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 381                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 382                         break;
 383                 };
 384
 385                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 386                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 387                         break;
 388                 };
 389
 390                 if(mifare_classic_halt(pcs, cuid)) {
 391                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 392                         break;
 393                 };
 394
 395                 isOK = 1;
 396                 break;
 397         }
 398
 399         //  ----------------------------- crypto1 destroy
 400         crypto1_destroy(pcs);
 401
 402         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 403
 404         LED_B_ON();
 405         cmd_send(CMD_ACK,isOK,0,0,0,0);
 406         LED_B_OFF();
 407
 408
 409         // Thats it...
 410         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 411         LEDsoff();
 412 }
 413
 414 void MifareUWriteBlock(uint8_t arg0, uint8_t *datain)
 415 {
 416     uint8_t blockNo = arg0;
 417         byte_t blockdata[16] = {0x00};
 418
 419     memcpy(blockdata, datain, 16);
 420
 421         uint8_t uid[10] = {0x00};
 422
 423         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 424
 425         clear_trace();
 426         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 427
 428         if(!iso14443a_select_card(uid, NULL, NULL)) {
 429                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 430                 OnError(0);
 431                 return;
 432         };
 433
 434         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 435                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 436                 OnError(0);
 437                 return; };
 438
 439         if(mifare_ultra_halt()) {
 440                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 441                 OnError(0);
 442                 return;
 443         };
 444
 445         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 446
 447         cmd_send(CMD_ACK,1,0,0,0,0);
 448         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 449         LEDsoff();
 450 }
 451
 452 void MifareUWriteBlock_Special(uint8_t arg0, uint8_t *datain)
 453 {
 454         uint8_t blockNo = arg0;
 455         byte_t blockdata[4] = {0x00};
 456
 457         memcpy(blockdata, datain,4);
 458
 459         LEDsoff();
 460         LED_A_ON();
 461         clear_trace();
 462         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 463
 464         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 465                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 466                 OnError(0);
 467                 return;
 468         };
 469
 470         if(mifare_ultra_special_writeblock(blockNo, blockdata)) {
 471                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 472                 OnError(0);
 473                 return;
 474         };
 475
 476         if(mifare_ultra_halt()) {
 477                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 478                 OnError(0);
 479                 return;
 480         };
 481
 482         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 483
 484         cmd_send(CMD_ACK,1,0,0,0,0);
 485         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 486         LEDsoff();
 487 }
 488
 489 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 490
 491         uint8_t pwd[16] = {0x00};
 492         byte_t blockdata[4] = {0x00};
 493
 494         memcpy(pwd, datain, 16);
 495
 496         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 497         clear_trace();
 498         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 499
 500         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 501                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 502                 OnError(0);
 503                 return;
 504         };
 505
 506         blockdata[0] = pwd[7];
 507         blockdata[1] = pwd[6];
 508         blockdata[2] = pwd[5];
 509         blockdata[3] = pwd[4];
 510         if(mifare_ultra_special_writeblock( 44, blockdata)) {
 511                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 512                 OnError(44);
 513                 return;
 514         };
 515
 516         blockdata[0] = pwd[3];
 517         blockdata[1] = pwd[2];
 518         blockdata[2] = pwd[1];
 519         blockdata[3] = pwd[0];
 520         if(mifare_ultra_special_writeblock( 45, blockdata)) {
 521                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 522                 OnError(45);
 523                 return;
 524         };
 525
 526         blockdata[0] = pwd[15];
 527         blockdata[1] = pwd[14];
 528         blockdata[2] = pwd[13];
 529         blockdata[3] = pwd[12];
 530         if(mifare_ultra_special_writeblock( 46, blockdata)) {
 531                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 532                 OnError(46);
 533                 return;
 534         };
 535
 536         blockdata[0] = pwd[11];
 537         blockdata[1] = pwd[10];
 538         blockdata[2] = pwd[9];
 539         blockdata[3] = pwd[8];
 540         if(mifare_ultra_special_writeblock( 47, blockdata)) {
 541                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 542                 OnError(47);
 543                 return;
 544         };
 545
 546         if(mifare_ultra_halt()) {
 547                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 548                 OnError(0);
 549                 return;
 550         };
 551
 552         cmd_send(CMD_ACK,1,0,0,0,0);
 553         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 554         LEDsoff();
 555 }
 556
 557 // Return 1 if the nonce is invalid else return 0
 558 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 559         return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 560         (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 561         (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 562 }
 563
 564
 565 //-----------------------------------------------------------------------------
 566 // MIFARE nested authentication.
 567 //
 568 //-----------------------------------------------------------------------------
 569 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 570 {
 571         // params
 572         uint8_t blockNo = arg0 & 0xff;
 573         uint8_t keyType = (arg0 >> 8) & 0xff;
 574         uint8_t targetBlockNo = arg1 & 0xff;
 575         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 576         uint64_t ui64Key = 0;
 577
 578         ui64Key = bytes_to_num(datain, 6);
 579
 580         // variables
 581         uint16_t rtr, i, j, len;
 582         uint16_t davg;
 583         static uint16_t dmin, dmax;
 584         uint8_t uid[10];
 585         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 586         uint8_t par[1];
 587         uint32_t target_nt[2], target_ks[2];
 588
 589         uint8_t par_array[4];
 590         uint16_t ncount = 0;
 591         struct Crypto1State mpcs = {0, 0};
 592         struct Crypto1State *pcs;
 593         pcs = &mpcs;
 594         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 595
 596         uint32_t auth1_time, auth2_time;
 597         static uint16_t delta_time;
 598
 599         // free eventually allocated BigBuf memory
 600         BigBuf_free();
 601         // clear trace
 602         clear_trace();
 603         set_tracing(false);
 604
 605         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 606
 607         LED_A_ON();
 608         LED_C_OFF();
 609
 610
 611         // statistics on nonce distance
 612         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 613                 LED_B_ON();
 614                 WDT_HIT();
 615
 616                 davg = dmax = 0;
 617                 dmin = 2000;
 618                 delta_time = 0;
 619
 620                 for (rtr = 0; rtr < 17; rtr++) {
 621
 622                         // prepare next select. No need to power down the card.
 623                         if(mifare_classic_halt(pcs, cuid)) {
 624                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 625                                 rtr--;
 626                                 continue;
 627                         }
 628
 629                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 630                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 631                                 rtr--;
 632                                 continue;
 633                         };
 634
 635                         auth1_time = 0;
 636                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 637                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 638                                 rtr--;
 639                                 continue;
 640                         };
 641
 642                         if (delta_time) {
 643                                 auth2_time = auth1_time + delta_time;
 644                         } else {
 645                                 auth2_time = 0;
 646                         }
 647                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 648                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 649                                 rtr--;
 650                                 continue;
 651                         };
 652
 653                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 654                         for (i = 101; i < 1200; i++) {
 655                                 nttmp = prng_successor(nttmp, 1);
 656                                 if (nttmp == nt2) break;
 657                         }
 658
 659                         if (i != 1200) {
 660                                 if (rtr != 0) {
 661                                         davg += i;
 662                                         dmin = MIN(dmin, i);
 663                                         dmax = MAX(dmax, i);
 664                                 }
 665                                 else {
 666                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 667                                 }
 668                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 669                         }
 670                 }
 671
 672                 if (rtr <= 1)   return;
 673
 674                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 675
 676                 if (MF_DBGLEVEL >= 3) Dbprintf("min=%d max=%d avg=%d, delta_time=%d", dmin, dmax, davg, delta_time);
 677
 678                 dmin = davg - 2;
 679                 dmax = davg + 2;
 680
 681                 LED_B_OFF();
 682
 683         }
 684 //  -------------------------------------------------------------------------------------------------
 685
 686         LED_C_ON();
 687
 688         //  get crypted nonces for target sector
 689         for(i=0; i < 2; i++) { // look for exactly two different nonces
 690
 691                 target_nt[i] = 0;
 692                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 693
 694                         // prepare next select. No need to power down the card.
 695                         if(mifare_classic_halt(pcs, cuid)) {
 696                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 697                                 continue;
 698                         }
 699
 700                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 701                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 702                                 continue;
 703                         };
 704
 705                         auth1_time = 0;
 706                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 707                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 708                                 continue;
 709                         };
 710
 711                         // nested authentication
 712                         auth2_time = auth1_time + delta_time;
 713                         len = mifare_sendcmd_shortex(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 714                         if (len != 4) {
 715                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 716                                 continue;
 717                         };
 718
 719                         nt2 = bytes_to_num(receivedAnswer, 4);
 720                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 721
 722                         // Parity validity check
 723                         for (j = 0; j < 4; j++) {
 724                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 725                         }
 726
 727                         ncount = 0;
 728                         nttest = prng_successor(nt1, dmin - 1);
 729                         for (j = dmin; j < dmax + 1; j++) {
 730                                 nttest = prng_successor(nttest, 1);
 731                                 ks1 = nt2 ^ nttest;
 732
 733                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 734                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 735                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 736                                                 target_nt[i] = 0;
 737                                                 break;
 738                                         }
 739                                         target_nt[i] = nttest;
 740                                         target_ks[i] = ks1;
 741                                         ncount++;
 742                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 743                                                 target_nt[i] = 0;
 744                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 745                                                 break;
 746                                         }
 747                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 748                                 }
 749                         }
 750                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 751                 }
 752         }
 753
 754         LED_C_OFF();
 755
 756         //  ----------------------------- crypto1 destroy
 757         crypto1_destroy(pcs);
 758
 759         byte_t buf[4 + 4 * 4];
 760         memcpy(buf, &cuid, 4);
 761         memcpy(buf+4, &target_nt[0], 4);
 762         memcpy(buf+8, &target_ks[0], 4);
 763         memcpy(buf+12, &target_nt[1], 4);
 764         memcpy(buf+16, &target_ks[1], 4);
 765
 766         LED_B_ON();
 767         cmd_send(CMD_ACK, 0, 2, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 768         LED_B_OFF();
 769
 770         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 771
 772         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 773         LEDsoff();
 774         set_tracing(TRUE);
 775 }
 776
 777 //-----------------------------------------------------------------------------
 778 // MIFARE check keys. key count up to 85.
 779 //
 780 //-----------------------------------------------------------------------------
 781 void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 782 {
 783   // params
 784         uint8_t blockNo = arg0;
 785         uint8_t keyType = arg1;
 786         uint8_t keyCount = arg2;
 787         uint64_t ui64Key = 0;
 788
 789         // variables
 790         int i;
 791         byte_t isOK = 0;
 792         uint8_t uid[10];
 793         uint32_t cuid;
 794         struct Crypto1State mpcs = {0, 0};
 795         struct Crypto1State *pcs;
 796         pcs = &mpcs;
 797
 798         // clear debug level
 799         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 800         MF_DBGLEVEL = MF_DBG_NONE;
 801
 802         // clear trace
 803         clear_trace();
 804         set_tracing(TRUE);
 805
 806         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 807
 808         LED_A_ON();
 809         LED_B_OFF();
 810         LED_C_OFF();
 811
 812         for (i = 0; i < keyCount; i++) {
 813                 if(mifare_classic_halt(pcs, cuid)) {
 814                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 815                 }
 816
 817                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 818                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 819                         break;
 820                 };
 821
 822                 ui64Key = bytes_to_num(datain + i * 6, 6);
 823                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 824                         continue;
 825                 };
 826
 827                 isOK = 1;
 828                 break;
 829         }
 830
 831         //  ----------------------------- crypto1 destroy
 832         crypto1_destroy(pcs);
 833
 834         LED_B_ON();
 835     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 836         LED_B_OFF();
 837
 838         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 839         LEDsoff();
 840
 841         // restore debug level
 842         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 843 }
 844
 845 //-----------------------------------------------------------------------------
 846 // MIFARE commands set debug level
 847 //
 848 //-----------------------------------------------------------------------------
 849 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 850         MF_DBGLEVEL = arg0;
 851         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 852 }
 853
 854 //-----------------------------------------------------------------------------
 855 // Work with emulator memory
 856 //
 857 //-----------------------------------------------------------------------------
 858 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 859         emlClearMem();
 860 }
 861
 862 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 863         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 864 }
 865
 866 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 867         byte_t buf[USB_CMD_DATA_SIZE];
 868         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 869
 870         LED_B_ON();
 871         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 872         LED_B_OFF();
 873 }
 874
 875 //-----------------------------------------------------------------------------
 876 // Load a card into the emulator memory
 877 //
 878 //-----------------------------------------------------------------------------
 879 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 880         uint8_t numSectors = arg0;
 881         uint8_t keyType = arg1;
 882         uint64_t ui64Key = 0;
 883         uint32_t cuid;
 884         struct Crypto1State mpcs = {0, 0};
 885         struct Crypto1State *pcs;
 886         pcs = &mpcs;
 887
 888         // variables
 889         byte_t dataoutbuf[16];
 890         byte_t dataoutbuf2[16];
 891         uint8_t uid[10];
 892
 893         // clear trace
 894         clear_trace();
 895         set_tracing(false);
 896
 897         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 898
 899         LED_A_ON();
 900         LED_B_OFF();
 901         LED_C_OFF();
 902
 903         bool isOK = true;
 904
 905         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 906                 isOK = false;
 907                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 908         }
 909
 910         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 911                 ui64Key = emlGetKey(sectorNo, keyType);
 912                 if (sectorNo == 0){
 913                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 914                                 isOK = false;
 915                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 916                                 break;
 917                         }
 918                 } else {
 919                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 920                                 isOK = false;
 921                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 922                                 break;
 923                         }
 924                 }
 925
 926                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 927                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 928                                 isOK = false;
 929                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 930                                 break;
 931                         };
 932                         if (isOK) {
 933                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 934                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 935                                 } else {        // sector trailer, keep the keys, set only the AC
 936                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 937                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 938                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 939                                 }
 940                         }
 941                 }
 942
 943         }
 944
 945         if(mifare_classic_halt(pcs, cuid)) {
 946                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 947         };
 948
 949         //  ----------------------------- crypto1 destroy
 950         crypto1_destroy(pcs);
 951
 952         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 953         LEDsoff();
 954
 955         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
 956
 957 }
 958
 959
 960 //-----------------------------------------------------------------------------
 961 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
 962 //
 963 //-----------------------------------------------------------------------------
 964 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 965
 966   // params
 967         uint8_t needWipe = arg0;
 968         // bit 0 - need get UID
 969         // bit 1 - need wupC
 970         // bit 2 - need HALT after sequence
 971         // bit 3 - need init FPGA and field before sequence
 972         // bit 4 - need reset FPGA and LED
 973         uint8_t workFlags = arg1;
 974         uint8_t blockNo = arg2;
 975
 976         // card commands
 977         uint8_t wupC1[]       = { 0x40 };
 978         uint8_t wupC2[]       = { 0x43 };
 979         uint8_t wipeC[]       = { 0x41 };
 980
 981         // variables
 982         byte_t isOK = 0;
 983         uint8_t uid[10] = {0x00};
 984         uint8_t d_block[18] = {0x00};
 985         uint32_t cuid;
 986
 987         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 988         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 989
 990         // reset FPGA and LED
 991         if (workFlags & 0x08) {
 992                 LED_A_ON();
 993                 LED_B_OFF();
 994                 LED_C_OFF();
 995
 996                 clear_trace();
 997                 set_tracing(TRUE);
 998                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 999         }
1000
1001         while (true) {
1002
1003                 // get UID from chip
1004                 if (workFlags & 0x01) {
1005                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
1006                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1007                                 //break;
1008                         };
1009
1010                         if(mifare_classic_halt(NULL, cuid)) {
1011                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1012                                 //break;
1013                         };
1014                 };
1015
1016                 // reset chip
1017                 if (needWipe){
1018                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1019                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1020                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1021                                 break;
1022                         };
1023
1024                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1025                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1026                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1027                                 break;
1028                         };
1029
1030                         if(mifare_classic_halt(NULL, cuid)) {
1031                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1032                                 break;
1033                         };
1034                 };
1035
1036                 // write block
1037                 if (workFlags & 0x02) {
1038                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1039                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1040                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1041                                 break;
1042                         };
1043
1044                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1045                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1046                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1047                                 break;
1048                         };
1049                 }
1050
1051                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1052                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1053                         break;
1054                 };
1055
1056                 memcpy(d_block, datain, 16);
1057                 AppendCrc14443a(d_block, 16);
1058
1059                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1060                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1061                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1062                         break;
1063                 };
1064
1065                 if (workFlags & 0x04) {
1066                         if (mifare_classic_halt(NULL, cuid)) {
1067                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1068                                 break;
1069                         };
1070                 }
1071
1072                 isOK = 1;
1073                 break;
1074         }
1075
1076         LED_B_ON();
1077         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1078         LED_B_OFF();
1079
1080         if ((workFlags & 0x10) || (!isOK)) {
1081                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1082                 LEDsoff();
1083         }
1084 }
1085
1086
1087 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1088
1089   // params
1090         // bit 1 - need wupC
1091         // bit 2 - need HALT after sequence
1092         // bit 3 - need init FPGA and field before sequence
1093         // bit 4 - need reset FPGA and LED
1094         uint8_t workFlags = arg0;
1095         uint8_t blockNo = arg2;
1096
1097         // card commands
1098         uint8_t wupC1[]       = { 0x40 };
1099         uint8_t wupC2[]       = { 0x43 };
1100
1101         // variables
1102         byte_t isOK = 0;
1103         uint8_t data[18] = {0x00};
1104         uint32_t cuid = 0;
1105
1106         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1107         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1108
1109         if (workFlags & 0x08) {
1110                 LED_A_ON();
1111                 LED_B_OFF();
1112                 LED_C_OFF();
1113
1114                 clear_trace();
1115                 set_tracing(TRUE);
1116                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1117         }
1118
1119         while (true) {
1120                 if (workFlags & 0x02) {
1121                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1122                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1123                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1124                                 break;
1125                         };
1126
1127                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1128                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1129                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1130                                 break;
1131                         };
1132                 }
1133
1134                 // read block
1135                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1136                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1137                         break;
1138                 };
1139                 memcpy(data, receivedAnswer, 18);
1140
1141                 if (workFlags & 0x04) {
1142                         if (mifare_classic_halt(NULL, cuid)) {
1143                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1144                                 break;
1145                         };
1146                 }
1147
1148                 isOK = 1;
1149                 break;
1150         }
1151
1152         LED_B_ON();
1153         cmd_send(CMD_ACK,isOK,0,0,data,18);
1154         LED_B_OFF();
1155
1156         if ((workFlags & 0x10) || (!isOK)) {
1157                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1158                 LEDsoff();
1159         }
1160 }
1161
1162 void MifareCIdent(){
1163
1164         // card commands
1165         uint8_t wupC1[]       = { 0x40 };
1166         uint8_t wupC2[]       = { 0x43 };
1167
1168         // variables
1169         byte_t isOK = 1;
1170
1171         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1172         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1173
1174         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1175         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1176                 isOK = 0;
1177         };
1178
1179         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1180         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1181                 isOK = 0;
1182         };
1183
1184         if (mifare_classic_halt(NULL, 0)) {
1185                 isOK = 0;
1186         };
1187
1188         cmd_send(CMD_ACK,isOK,0,0,0,0);
1189 }
1190
1191 void MifareCollectNonces(uint32_t arg0, uint32_t arg1){
1192
1193         BigBuf_free();
1194
1195         uint32_t iterations = arg0;
1196         uint8_t uid[10] = {0x00};
1197
1198         uint8_t *response = BigBuf_malloc(MAX_MIFARE_FRAME_SIZE);
1199         uint8_t *responsePar = BigBuf_malloc(MAX_MIFARE_PARITY_SIZE);
1200
1201         uint8_t mf_auth[] = { 0x60,0x00,0xf5,0x7b };
1202
1203         // get memory from BigBuf.
1204         uint8_t *nonces = BigBuf_malloc(iterations * 4);
1205
1206         LED_A_ON();
1207         LED_B_OFF();
1208         LED_C_OFF();
1209
1210         clear_trace();
1211         set_tracing(TRUE);
1212         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1213
1214         for (int i = 0; i < iterations; i++) {
1215
1216                 WDT_HIT();
1217
1218                 // Test if the action was cancelled
1219                 if(BUTTON_PRESS()) break;
1220
1221                 //              if(mifare_classic_halt(pcs, cuid)) {
1222                 //                      if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
1223                 //}
1224
1225                 if(!iso14443a_select_card(uid, NULL, NULL)) {
1226                         if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
1227                         continue;
1228                 };
1229
1230                 // Transmit MIFARE_CLASSIC_AUTH.
1231                 ReaderTransmit(mf_auth, sizeof(mf_auth), NULL);
1232
1233                 // Receive the (4 Byte) "random" nonce
1234                 if (!ReaderReceive(response, responsePar)) {
1235                         if (MF_DBGLEVEL >= 1)   Dbprintf("Couldn't receive tag nonce");
1236                         continue;
1237                 }
1238
1239                 nonces[i*4] = bytes_to_num(response, 4);
1240         }
1241
1242         int packLen =  iterations * 4;
1243         int packSize = 0;
1244         int packNum = 0;
1245         while (packLen > 0) {
1246                 packSize = MIN(USB_CMD_DATA_SIZE, packLen);
1247                 LED_B_ON();
1248                 cmd_send(CMD_ACK, 77, 0, packSize, nonces - packLen, packSize);
1249                 LED_B_OFF();
1250
1251                 packLen -= packSize;
1252                 packNum++;
1253         }
1254         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1255         LEDsoff();
1256 }
1257
1258 //
1259 // DESFIRE
1260 //
1261
1262 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1263
1264         byte_t dataout[11] = {0x00};
1265         uint8_t uid[10] = {0x00};
1266         uint32_t cuid = 0x00;
1267
1268         clear_trace();
1269         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1270
1271         int len = iso14443a_select_card(uid, NULL, &cuid);
1272         if(!len) {
1273                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1274                 OnError(1);
1275                 return;
1276         };
1277
1278         if(mifare_desfire_des_auth1(cuid, dataout)){
1279                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1280                 OnError(4);
1281                 return;
1282         }
1283
1284         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1285     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1286 }
1287
1288 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1289
1290         uint32_t cuid = arg0;
1291         uint8_t key[16] = {0x00};
1292         byte_t dataout[12] = {0x00};
1293         byte_t isOK = 0;
1294
1295         memcpy(key, datain, 16);
1296
1297         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1298
1299         if( isOK) {
1300             if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1301                 OnError(4);
1302                 return;
1303         }
1304
1305         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1306
1307         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1308         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1309         LEDsoff();
1310 }