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 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  90
  91         bool turnOffField = (arg0 == 1);
  92
  93         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
  94         clear_trace();
  95         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  96
  97         if(!iso14443a_select_card(NULL, NULL, NULL)) {
  98                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
  99                 OnError(0);
 100                 return;
 101         };
 102
 103         if(!mifare_ultra_auth(keybytes)){
 104                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 105                 OnError(1);
 106                 return;
 107         }
 108
 109         if (turnOffField) {
 110                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 111                 LEDsoff();
 112         }
 113         cmd_send(CMD_ACK,1,0,0,0,0);
 114 }
 115
 116 // Arg0 = BlockNo,
 117 // Arg1 = UsePwd bool
 118 // datain = PWD bytes,
 119 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 120 {
 121         uint8_t blockNo = arg0;
 122         byte_t dataout[16] = {0x00};
 123         bool useKey = (arg1 == 1); //UL_C
 124         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 125
 126         LEDsoff();
 127         LED_A_ON();
 128         clear_trace();
 129         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 130
 131         int len = iso14443a_select_card(NULL, NULL, NULL);
 132         if(!len) {
 133                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 134                 OnError(1);
 135                 return;
 136         }
 137
 138         // UL-C authentication
 139         if ( useKey ) {
 140                 uint8_t key[16] = {0x00};
 141                 memcpy(key, datain, sizeof(key) );
 142
 143                 if ( !mifare_ultra_auth(key) ) {
 144                         OnError(1);
 145                         return;
 146                 }
 147         }
 148
 149         // UL-EV1 / NTAG authentication
 150         if ( usePwd ) {
 151                 uint8_t pwd[4] = {0x00};
 152                 memcpy(pwd, datain, 4);
 153                 uint8_t pack[4] = {0,0,0,0};
 154                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 155                         OnError(1);
 156                         return;
 157                 }
 158         }
 159
 160         if( mifare_ultra_readblock(blockNo, dataout) ) {
 161                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 162                 OnError(2);
 163                 return;
 164         }
 165
 166         if( mifare_ultra_halt() ) {
 167                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 168                 OnError(3);
 169                 return;
 170         }
 171
 172     cmd_send(CMD_ACK,1,0,0,dataout,16);
 173         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 174         LEDsoff();
 175 }
 176
 177 //-----------------------------------------------------------------------------
 178 // Select, Authenticate, Read a MIFARE tag.
 179 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 180 //-----------------------------------------------------------------------------
 181 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 182 {
 183   // params
 184         uint8_t sectorNo = arg0;
 185         uint8_t keyType = arg1;
 186         uint64_t ui64Key = 0;
 187         ui64Key = bytes_to_num(datain, 6);
 188
 189         // variables
 190         byte_t isOK = 0;
 191         byte_t dataoutbuf[16 * 16];
 192         uint8_t uid[10];
 193         uint32_t cuid;
 194         struct Crypto1State mpcs = {0, 0};
 195         struct Crypto1State *pcs;
 196         pcs = &mpcs;
 197
 198         // clear trace
 199         clear_trace();
 200
 201         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 202
 203         LED_A_ON();
 204         LED_B_OFF();
 205         LED_C_OFF();
 206
 207         isOK = 1;
 208         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 209                 isOK = 0;
 210                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 211         }
 212
 213
 214         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 215                 isOK = 0;
 216                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 217         }
 218
 219         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 220                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 221                         isOK = 0;
 222                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 223                         break;
 224                 }
 225         }
 226
 227         if(mifare_classic_halt(pcs, cuid)) {
 228                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 229         }
 230
 231         //  ----------------------------- crypto1 destroy
 232         crypto1_destroy(pcs);
 233
 234         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 235
 236         LED_B_ON();
 237         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 238         LED_B_OFF();
 239
 240         // Thats it...
 241         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 242         LEDsoff();
 243 }
 244
 245 // arg0 = blockNo (start)
 246 // arg1 = Pages (number of blocks)
 247 // arg2 = useKey
 248 // datain = KEY bytes
 249 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 250 {
 251         // free eventually allocated BigBuf memory
 252         BigBuf_free();
 253         clear_trace();
 254
 255         // params
 256         uint8_t blockNo = arg0;
 257         uint16_t blocks = arg1;
 258         bool useKey = (arg2 == 1); //UL_C
 259         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 260         uint32_t countblocks = 0;
 261         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 262         if (dataout == NULL){
 263                 Dbprintf("out of memory");
 264                 OnError(1);
 265                 return;
 266         }
 267
 268         LEDsoff();
 269         LED_A_ON();
 270         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 271
 272         int len = iso14443a_select_card(NULL, NULL, NULL);
 273         if (!len) {
 274                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 275                 OnError(1);
 276                 return;
 277         }
 278
 279         // UL-C authentication
 280         if ( useKey ) {
 281                 uint8_t key[16] = {0x00};
 282                 memcpy(key, datain, sizeof(key) );
 283
 284                 if ( !mifare_ultra_auth(key) ) {
 285                         OnError(1);
 286                         return;
 287                 }
 288         }
 289
 290         // UL-EV1 / NTAG authentication
 291         if (usePwd) {
 292                 uint8_t pwd[4] = {0x00};
 293                 memcpy(pwd, datain, sizeof(pwd));
 294                 uint8_t pack[4] = {0,0,0,0};
 295
 296                 if (!mifare_ul_ev1_auth(pwd, pack)){
 297                         OnError(1);
 298                         return;
 299                 }
 300         }
 301
 302         for (int i = 0; i < blocks; i++){
 303                 if ((i*4) + 4 > CARD_MEMORY_SIZE) {
 304                         Dbprintf("Data exceeds buffer!!");
 305                         break;
 306                 }
 307
 308                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 309
 310                 if (len) {
 311                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 312                         // if no blocks read - error out
 313                         if (i==0){
 314                                 OnError(2);
 315                         return;
 316                         } else {
 317                                 //stop at last successful read block and return what we got
 318                                 break;
 319                         }
 320                 } else {
 321                         countblocks++;
 322                 }
 323         }
 324
 325         len = mifare_ultra_halt();
 326         if (len) {
 327                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 328                 OnError(3);
 329                 return;
 330         }
 331
 332         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 333
 334         countblocks *= 4;
 335         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(),0 , 0);
 336         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 337         LEDsoff();
 338
 339 }
 340
 341 //-----------------------------------------------------------------------------
 342 // Select, Authenticate, Write a MIFARE tag.
 343 // read block
 344 //-----------------------------------------------------------------------------
 345 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 346 {
 347         // params
 348         uint8_t blockNo = arg0;
 349         uint8_t keyType = arg1;
 350         uint64_t ui64Key = 0;
 351         byte_t blockdata[16];
 352
 353         ui64Key = bytes_to_num(datain, 6);
 354         memcpy(blockdata, datain + 10, 16);
 355
 356         // variables
 357         byte_t isOK = 0;
 358         uint8_t uid[10];
 359         uint32_t cuid;
 360         struct Crypto1State mpcs = {0, 0};
 361         struct Crypto1State *pcs;
 362         pcs = &mpcs;
 363
 364         // clear trace
 365         clear_trace();
 366
 367         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 368
 369         LED_A_ON();
 370         LED_B_OFF();
 371         LED_C_OFF();
 372
 373         while (true) {
 374                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 375                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 376                         break;
 377                 };
 378
 379                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 380                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 381                         break;
 382                 };
 383
 384                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 385                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 386                         break;
 387                 };
 388
 389                 if(mifare_classic_halt(pcs, cuid)) {
 390                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 391                         break;
 392                 };
 393
 394                 isOK = 1;
 395                 break;
 396         }
 397
 398         //  ----------------------------- crypto1 destroy
 399         crypto1_destroy(pcs);
 400
 401         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 402
 403         LED_B_ON();
 404         cmd_send(CMD_ACK,isOK,0,0,0,0);
 405         LED_B_OFF();
 406
 407
 408         // Thats it...
 409         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 410         LEDsoff();
 411 }
 412
 413 void MifareUWriteBlock(uint8_t arg0, uint8_t *datain)
 414 {
 415         uint8_t blockNo = arg0;
 416         byte_t blockdata[16] = {0x00};
 417
 418         memcpy(blockdata, datain, 16);
 419
 420         uint8_t uid[10] = {0x00};
 421
 422         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 423
 424         clear_trace();
 425         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 426
 427         if(!iso14443a_select_card(uid, NULL, NULL)) {
 428                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 429                 OnError(0);
 430                 return;
 431         };
 432
 433         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 434                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 435                 OnError(0);
 436                 return; };
 437
 438         if(mifare_ultra_halt()) {
 439                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 440                 OnError(0);
 441                 return;
 442         };
 443
 444         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 445
 446         cmd_send(CMD_ACK,1,0,0,0,0);
 447         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 448         LEDsoff();
 449 }
 450
 451 // Arg0   : Block to write to.
 452 // Arg1   : 0 = use no authentication.
 453 //          1 = use 0x1A authentication.
 454 //          2 = use 0x1B authentication.
 455 // datain : 4 first bytes is data to be written.
 456 //        : 4/16 next bytes is authentication key.
 457 void MifareUWriteBlock_Special(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 458 {
 459         uint8_t blockNo = arg0;
 460         bool useKey = (arg1 == 1); //UL_C
 461         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 462         byte_t blockdata[4] = {0x00};
 463
 464         memcpy(blockdata, datain,4);
 465
 466         LEDsoff();
 467         LED_A_ON();
 468         clear_trace();
 469         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 470
 471         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 472                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 473                 OnError(0);
 474                 return;
 475         };
 476
 477         // UL-C authentication
 478         if ( useKey ) {
 479                 uint8_t key[16] = {0x00};
 480                 memcpy(key, datain+4, sizeof(key) );
 481
 482                 if ( !mifare_ultra_auth(key) ) {
 483                         OnError(1);
 484                         return;
 485                 }
 486         }
 487
 488         // UL-EV1 / NTAG authentication
 489         if (usePwd) {
 490                 uint8_t pwd[4] = {0x00};
 491                 memcpy(pwd, datain+4, 4);
 492                 uint8_t pack[4] = {0,0,0,0};
 493                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 494                         OnError(1);
 495                         return;
 496                 }
 497         }
 498
 499         if(mifare_ultra_special_writeblock(blockNo, blockdata)) {
 500                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 501                 OnError(0);
 502                 return;
 503         };
 504
 505         if(mifare_ultra_halt()) {
 506                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 507                 OnError(0);
 508                 return;
 509         };
 510
 511         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 512
 513         cmd_send(CMD_ACK,1,0,0,0,0);
 514         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 515         LEDsoff();
 516 }
 517
 518 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 519
 520         uint8_t pwd[16] = {0x00};
 521         byte_t blockdata[4] = {0x00};
 522
 523         memcpy(pwd, datain, 16);
 524
 525         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 526         clear_trace();
 527         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 528
 529         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 530                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 531                 OnError(0);
 532                 return;
 533         };
 534
 535         blockdata[0] = pwd[7];
 536         blockdata[1] = pwd[6];
 537         blockdata[2] = pwd[5];
 538         blockdata[3] = pwd[4];
 539         if(mifare_ultra_special_writeblock( 44, blockdata)) {
 540                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 541                 OnError(44);
 542                 return;
 543         };
 544
 545         blockdata[0] = pwd[3];
 546         blockdata[1] = pwd[2];
 547         blockdata[2] = pwd[1];
 548         blockdata[3] = pwd[0];
 549         if(mifare_ultra_special_writeblock( 45, blockdata)) {
 550                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 551                 OnError(45);
 552                 return;
 553         };
 554
 555         blockdata[0] = pwd[15];
 556         blockdata[1] = pwd[14];
 557         blockdata[2] = pwd[13];
 558         blockdata[3] = pwd[12];
 559         if(mifare_ultra_special_writeblock( 46, blockdata)) {
 560                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 561                 OnError(46);
 562                 return;
 563         };
 564
 565         blockdata[0] = pwd[11];
 566         blockdata[1] = pwd[10];
 567         blockdata[2] = pwd[9];
 568         blockdata[3] = pwd[8];
 569         if(mifare_ultra_special_writeblock( 47, blockdata)) {
 570                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 571                 OnError(47);
 572                 return;
 573         };
 574
 575         if(mifare_ultra_halt()) {
 576                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 577                 OnError(0);
 578                 return;
 579         };
 580
 581         cmd_send(CMD_ACK,1,0,0,0,0);
 582         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 583         LEDsoff();
 584 }
 585
 586 // Return 1 if the nonce is invalid else return 0
 587 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 588         return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 589         (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 590         (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 591 }
 592
 593
 594 //-----------------------------------------------------------------------------
 595 // MIFARE nested authentication.
 596 //
 597 //-----------------------------------------------------------------------------
 598 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 599 {
 600         // params
 601         uint8_t blockNo = arg0 & 0xff;
 602         uint8_t keyType = (arg0 >> 8) & 0xff;
 603         uint8_t targetBlockNo = arg1 & 0xff;
 604         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 605         uint64_t ui64Key = 0;
 606
 607         ui64Key = bytes_to_num(datain, 6);
 608
 609         // variables
 610         uint16_t rtr, i, j, len;
 611         uint16_t davg;
 612         static uint16_t dmin, dmax;
 613         uint8_t uid[10];
 614         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 615         uint8_t par[1];
 616         uint32_t target_nt[2], target_ks[2];
 617
 618         uint8_t par_array[4];
 619         uint16_t ncount = 0;
 620         struct Crypto1State mpcs = {0, 0};
 621         struct Crypto1State *pcs;
 622         pcs = &mpcs;
 623         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 624
 625         uint32_t auth1_time, auth2_time;
 626         static uint16_t delta_time;
 627
 628         // free eventually allocated BigBuf memory
 629         BigBuf_free();
 630         // clear trace
 631         clear_trace();
 632         set_tracing(false);
 633
 634         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 635
 636         LED_A_ON();
 637         LED_C_OFF();
 638
 639
 640         // statistics on nonce distance
 641         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 642                 LED_B_ON();
 643                 WDT_HIT();
 644
 645                 davg = dmax = 0;
 646                 dmin = 2000;
 647                 delta_time = 0;
 648
 649                 for (rtr = 0; rtr < 17; rtr++) {
 650
 651                         // prepare next select. No need to power down the card.
 652                         if(mifare_classic_halt(pcs, cuid)) {
 653                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 654                                 rtr--;
 655                                 continue;
 656                         }
 657
 658                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 659                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 660                                 rtr--;
 661                                 continue;
 662                         };
 663
 664                         auth1_time = 0;
 665                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 666                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 667                                 rtr--;
 668                                 continue;
 669                         };
 670
 671                         if (delta_time) {
 672                                 auth2_time = auth1_time + delta_time;
 673                         } else {
 674                                 auth2_time = 0;
 675                         }
 676                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 677                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 678                                 rtr--;
 679                                 continue;
 680                         };
 681
 682                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 683                         for (i = 101; i < 1200; i++) {
 684                                 nttmp = prng_successor(nttmp, 1);
 685                                 if (nttmp == nt2) break;
 686                         }
 687
 688                         if (i != 1200) {
 689                                 if (rtr != 0) {
 690                                         davg += i;
 691                                         dmin = MIN(dmin, i);
 692                                         dmax = MAX(dmax, i);
 693                                 }
 694                                 else {
 695                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 696                                 }
 697                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 698                         }
 699                 }
 700
 701                 if (rtr <= 1)   return;
 702
 703                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 704
 705                 if (MF_DBGLEVEL >= 3) Dbprintf("min=%d max=%d avg=%d, delta_time=%d", dmin, dmax, davg, delta_time);
 706
 707                 dmin = davg - 2;
 708                 dmax = davg + 2;
 709
 710                 LED_B_OFF();
 711
 712         }
 713 //  -------------------------------------------------------------------------------------------------
 714
 715         LED_C_ON();
 716
 717         //  get crypted nonces for target sector
 718         for(i=0; i < 2; i++) { // look for exactly two different nonces
 719
 720                 target_nt[i] = 0;
 721                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 722
 723                         // prepare next select. No need to power down the card.
 724                         if(mifare_classic_halt(pcs, cuid)) {
 725                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 726                                 continue;
 727                         }
 728
 729                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 730                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 731                                 continue;
 732                         };
 733
 734                         auth1_time = 0;
 735                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 736                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 737                                 continue;
 738                         };
 739
 740                         // nested authentication
 741                         auth2_time = auth1_time + delta_time;
 742                         len = mifare_sendcmd_shortex(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 743                         if (len != 4) {
 744                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 745                                 continue;
 746                         };
 747
 748                         nt2 = bytes_to_num(receivedAnswer, 4);
 749                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 750
 751                         // Parity validity check
 752                         for (j = 0; j < 4; j++) {
 753                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 754                         }
 755
 756                         ncount = 0;
 757                         nttest = prng_successor(nt1, dmin - 1);
 758                         for (j = dmin; j < dmax + 1; j++) {
 759                                 nttest = prng_successor(nttest, 1);
 760                                 ks1 = nt2 ^ nttest;
 761
 762                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 763                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 764                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 765                                                 target_nt[i] = 0;
 766                                                 break;
 767                                         }
 768                                         target_nt[i] = nttest;
 769                                         target_ks[i] = ks1;
 770                                         ncount++;
 771                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 772                                                 target_nt[i] = 0;
 773                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 774                                                 break;
 775                                         }
 776                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 777                                 }
 778                         }
 779                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 780                 }
 781         }
 782
 783         LED_C_OFF();
 784
 785         //  ----------------------------- crypto1 destroy
 786         crypto1_destroy(pcs);
 787
 788         byte_t buf[4 + 4 * 4];
 789         memcpy(buf, &cuid, 4);
 790         memcpy(buf+4, &target_nt[0], 4);
 791         memcpy(buf+8, &target_ks[0], 4);
 792         memcpy(buf+12, &target_nt[1], 4);
 793         memcpy(buf+16, &target_ks[1], 4);
 794
 795         LED_B_ON();
 796         cmd_send(CMD_ACK, 0, 2, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 797         LED_B_OFF();
 798
 799         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 800
 801         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 802         LEDsoff();
 803         set_tracing(TRUE);
 804 }
 805
 806 //-----------------------------------------------------------------------------
 807 // MIFARE check keys. key count up to 85.
 808 //
 809 //-----------------------------------------------------------------------------
 810 void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 811 {
 812   // params
 813         uint8_t blockNo = arg0;
 814         uint8_t keyType = arg1;
 815         uint8_t keyCount = arg2;
 816         uint64_t ui64Key = 0;
 817
 818         // variables
 819         int i;
 820         byte_t isOK = 0;
 821         uint8_t uid[10];
 822         uint32_t cuid;
 823         struct Crypto1State mpcs = {0, 0};
 824         struct Crypto1State *pcs;
 825         pcs = &mpcs;
 826
 827         // clear debug level
 828         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 829         MF_DBGLEVEL = MF_DBG_NONE;
 830
 831         // clear trace
 832         clear_trace();
 833         set_tracing(TRUE);
 834
 835         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 836
 837         LED_A_ON();
 838         LED_B_OFF();
 839         LED_C_OFF();
 840
 841         for (i = 0; i < keyCount; i++) {
 842                 if(mifare_classic_halt(pcs, cuid)) {
 843                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 844                 }
 845
 846                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 847                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 848                         break;
 849                 };
 850
 851                 ui64Key = bytes_to_num(datain + i * 6, 6);
 852                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 853                         continue;
 854                 };
 855
 856                 isOK = 1;
 857                 break;
 858         }
 859
 860         //  ----------------------------- crypto1 destroy
 861         crypto1_destroy(pcs);
 862
 863         LED_B_ON();
 864     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 865         LED_B_OFF();
 866
 867         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 868         LEDsoff();
 869
 870         // restore debug level
 871         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 872 }
 873
 874 //-----------------------------------------------------------------------------
 875 // MIFARE commands set debug level
 876 //
 877 //-----------------------------------------------------------------------------
 878 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 879         MF_DBGLEVEL = arg0;
 880         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 881 }
 882
 883 //-----------------------------------------------------------------------------
 884 // Work with emulator memory
 885 //
 886 //-----------------------------------------------------------------------------
 887 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 888         emlClearMem();
 889 }
 890
 891 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 892         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 893 }
 894
 895 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 896         byte_t buf[USB_CMD_DATA_SIZE];
 897         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 898
 899         LED_B_ON();
 900         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 901         LED_B_OFF();
 902 }
 903
 904 //-----------------------------------------------------------------------------
 905 // Load a card into the emulator memory
 906 //
 907 //-----------------------------------------------------------------------------
 908 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 909         uint8_t numSectors = arg0;
 910         uint8_t keyType = arg1;
 911         uint64_t ui64Key = 0;
 912         uint32_t cuid;
 913         struct Crypto1State mpcs = {0, 0};
 914         struct Crypto1State *pcs;
 915         pcs = &mpcs;
 916
 917         // variables
 918         byte_t dataoutbuf[16];
 919         byte_t dataoutbuf2[16];
 920         uint8_t uid[10];
 921
 922         // clear trace
 923         clear_trace();
 924         set_tracing(false);
 925
 926         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 927
 928         LED_A_ON();
 929         LED_B_OFF();
 930         LED_C_OFF();
 931
 932         bool isOK = true;
 933
 934         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 935                 isOK = false;
 936                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 937         }
 938
 939         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 940                 ui64Key = emlGetKey(sectorNo, keyType);
 941                 if (sectorNo == 0){
 942                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 943                                 isOK = false;
 944                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 945                                 break;
 946                         }
 947                 } else {
 948                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 949                                 isOK = false;
 950                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 951                                 break;
 952                         }
 953                 }
 954
 955                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 956                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 957                                 isOK = false;
 958                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 959                                 break;
 960                         };
 961                         if (isOK) {
 962                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 963                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 964                                 } else {        // sector trailer, keep the keys, set only the AC
 965                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 966                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 967                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 968                                 }
 969                         }
 970                 }
 971
 972         }
 973
 974         if(mifare_classic_halt(pcs, cuid)) {
 975                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 976         };
 977
 978         //  ----------------------------- crypto1 destroy
 979         crypto1_destroy(pcs);
 980
 981         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 982         LEDsoff();
 983
 984         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
 985
 986 }
 987
 988
 989 //-----------------------------------------------------------------------------
 990 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
 991 //
 992 //-----------------------------------------------------------------------------
 993 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 994
 995   // params
 996         uint8_t needWipe = arg0;
 997         // bit 0 - need get UID
 998         // bit 1 - need wupC
 999         // bit 2 - need HALT after sequence
1000         // bit 3 - need init FPGA and field before sequence
1001         // bit 4 - need reset FPGA and LED
1002         uint8_t workFlags = arg1;
1003         uint8_t blockNo = arg2;
1004
1005         // card commands
1006         uint8_t wupC1[]       = { 0x40 };
1007         uint8_t wupC2[]       = { 0x43 };
1008         uint8_t wipeC[]       = { 0x41 };
1009
1010         // variables
1011         byte_t isOK = 0;
1012         uint8_t uid[10] = {0x00};
1013         uint8_t d_block[18] = {0x00};
1014         uint32_t cuid;
1015
1016         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1017         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1018
1019         // reset FPGA and LED
1020         if (workFlags & 0x08) {
1021                 LED_A_ON();
1022                 LED_B_OFF();
1023                 LED_C_OFF();
1024
1025                 clear_trace();
1026                 set_tracing(TRUE);
1027                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1028         }
1029
1030         while (true) {
1031
1032                 // get UID from chip
1033                 if (workFlags & 0x01) {
1034                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
1035                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1036                                 //break;
1037                         };
1038
1039                         if(mifare_classic_halt(NULL, cuid)) {
1040                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1041                                 //break;
1042                         };
1043                 };
1044
1045                 // reset chip
1046                 if (needWipe){
1047                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1048                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1049                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1050                                 break;
1051                         };
1052
1053                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1054                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1055                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1056                                 break;
1057                         };
1058
1059                         if(mifare_classic_halt(NULL, cuid)) {
1060                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1061                                 break;
1062                         };
1063                 };
1064
1065                 // write block
1066                 if (workFlags & 0x02) {
1067                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1068                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1069                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1070                                 break;
1071                         };
1072
1073                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1074                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1075                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1076                                 break;
1077                         };
1078                 }
1079
1080                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1081                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1082                         break;
1083                 };
1084
1085                 memcpy(d_block, datain, 16);
1086                 AppendCrc14443a(d_block, 16);
1087
1088                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1089                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1090                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1091                         break;
1092                 };
1093
1094                 if (workFlags & 0x04) {
1095                         if (mifare_classic_halt(NULL, cuid)) {
1096                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1097                                 break;
1098                         };
1099                 }
1100
1101                 isOK = 1;
1102                 break;
1103         }
1104
1105         LED_B_ON();
1106         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1107         LED_B_OFF();
1108
1109         if ((workFlags & 0x10) || (!isOK)) {
1110                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1111                 LEDsoff();
1112         }
1113 }
1114
1115
1116 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1117
1118   // params
1119         // bit 1 - need wupC
1120         // bit 2 - need HALT after sequence
1121         // bit 3 - need init FPGA and field before sequence
1122         // bit 4 - need reset FPGA and LED
1123         uint8_t workFlags = arg0;
1124         uint8_t blockNo = arg2;
1125
1126         // card commands
1127         uint8_t wupC1[]       = { 0x40 };
1128         uint8_t wupC2[]       = { 0x43 };
1129
1130         // variables
1131         byte_t isOK = 0;
1132         uint8_t data[18] = {0x00};
1133         uint32_t cuid = 0;
1134
1135         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1136         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1137
1138         if (workFlags & 0x08) {
1139                 LED_A_ON();
1140                 LED_B_OFF();
1141                 LED_C_OFF();
1142
1143                 clear_trace();
1144                 set_tracing(TRUE);
1145                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1146         }
1147
1148         while (true) {
1149                 if (workFlags & 0x02) {
1150                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1151                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1152                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1153                                 break;
1154                         };
1155
1156                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1157                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1158                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1159                                 break;
1160                         };
1161                 }
1162
1163                 // read block
1164                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1165                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1166                         break;
1167                 };
1168                 memcpy(data, receivedAnswer, 18);
1169
1170                 if (workFlags & 0x04) {
1171                         if (mifare_classic_halt(NULL, cuid)) {
1172                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1173                                 break;
1174                         };
1175                 }
1176
1177                 isOK = 1;
1178                 break;
1179         }
1180
1181         LED_B_ON();
1182         cmd_send(CMD_ACK,isOK,0,0,data,18);
1183         LED_B_OFF();
1184
1185         if ((workFlags & 0x10) || (!isOK)) {
1186                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1187                 LEDsoff();
1188         }
1189 }
1190
1191 void MifareCIdent(){
1192
1193         // card commands
1194         uint8_t wupC1[]       = { 0x40 };
1195         uint8_t wupC2[]       = { 0x43 };
1196
1197         // variables
1198         byte_t isOK = 1;
1199
1200         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1201         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1202
1203         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1204         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1205                 isOK = 0;
1206         };
1207
1208         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1209         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1210                 isOK = 0;
1211         };
1212
1213         if (mifare_classic_halt(NULL, 0)) {
1214                 isOK = 0;
1215         };
1216
1217         cmd_send(CMD_ACK,isOK,0,0,0,0);
1218 }
1219
1220 void MifareCollectNonces(uint32_t arg0, uint32_t arg1){
1221
1222         BigBuf_free();
1223
1224         uint32_t iterations = arg0;
1225         uint8_t uid[10] = {0x00};
1226
1227         uint8_t *response = BigBuf_malloc(MAX_MIFARE_FRAME_SIZE);
1228         uint8_t *responsePar = BigBuf_malloc(MAX_MIFARE_PARITY_SIZE);
1229
1230         uint8_t mf_auth[] = { 0x60,0x00,0xf5,0x7b };
1231
1232         // get memory from BigBuf.
1233         uint8_t *nonces = BigBuf_malloc(iterations * 4);
1234
1235         LED_A_ON();
1236         LED_B_OFF();
1237         LED_C_OFF();
1238
1239         clear_trace();
1240         set_tracing(TRUE);
1241         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1242
1243         for (int i = 0; i < iterations; i++) {
1244
1245                 WDT_HIT();
1246
1247                 // Test if the action was cancelled
1248                 if(BUTTON_PRESS()) break;
1249
1250                 //              if(mifare_classic_halt(pcs, cuid)) {
1251                 //                      if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
1252                 //}
1253
1254                 if(!iso14443a_select_card(uid, NULL, NULL)) {
1255                         if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
1256                         continue;
1257                 };
1258
1259                 // Transmit MIFARE_CLASSIC_AUTH.
1260                 ReaderTransmit(mf_auth, sizeof(mf_auth), NULL);
1261
1262                 // Receive the (4 Byte) "random" nonce
1263                 if (!ReaderReceive(response, responsePar)) {
1264                         if (MF_DBGLEVEL >= 1)   Dbprintf("Couldn't receive tag nonce");
1265                         continue;
1266                 }
1267
1268                 nonces[i*4] = bytes_to_num(response, 4);
1269         }
1270
1271         int packLen =  iterations * 4;
1272         int packSize = 0;
1273         int packNum = 0;
1274         while (packLen > 0) {
1275                 packSize = MIN(USB_CMD_DATA_SIZE, packLen);
1276                 LED_B_ON();
1277                 cmd_send(CMD_ACK, 77, 0, packSize, nonces - packLen, packSize);
1278                 LED_B_OFF();
1279
1280                 packLen -= packSize;
1281                 packNum++;
1282         }
1283         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1284         LEDsoff();
1285 }
1286
1287 //
1288 // DESFIRE
1289 //
1290
1291 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1292
1293         byte_t dataout[11] = {0x00};
1294         uint8_t uid[10] = {0x00};
1295         uint32_t cuid = 0x00;
1296
1297         clear_trace();
1298         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1299
1300         int len = iso14443a_select_card(uid, NULL, &cuid);
1301         if(!len) {
1302                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1303                 OnError(1);
1304                 return;
1305         };
1306
1307         if(mifare_desfire_des_auth1(cuid, dataout)){
1308                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1309                 OnError(4);
1310                 return;
1311         }
1312
1313         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1314     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1315 }
1316
1317 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1318
1319         uint32_t cuid = arg0;
1320         uint8_t key[16] = {0x00};
1321         byte_t dataout[12] = {0x00};
1322         byte_t isOK = 0;
1323
1324         memcpy(key, datain, 16);
1325
1326         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1327
1328         if( isOK) {
1329             if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1330                 OnError(4);
1331                 return;
1332         }
1333
1334         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1335
1336         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1337         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1338         LEDsoff();
1339 }