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