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 #include "crc.h"
  20
  21 //-----------------------------------------------------------------------------
  22 // Select, Authenticate, Read a MIFARE tag.
  23 // read block
  24 //-----------------------------------------------------------------------------
  25 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  26 {
  27   // params
  28         uint8_t blockNo = arg0;
  29         uint8_t keyType = arg1;
  30         uint64_t ui64Key = 0;
  31         ui64Key = bytes_to_num(datain, 6);
  32
  33         // variables
  34         byte_t isOK = 0;
  35         byte_t dataoutbuf[16];
  36         uint8_t uid[10];
  37         uint32_t cuid;
  38         struct Crypto1State mpcs = {0, 0};
  39         struct Crypto1State *pcs;
  40         pcs = &mpcs;
  41
  42         // clear trace
  43         clear_trace();
  44         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  45
  46         LED_A_ON();
  47         LED_B_OFF();
  48         LED_C_OFF();
  49
  50         while (true) {
  51                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
  52                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  53                         break;
  54                 };
  55
  56                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  57                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  58                         break;
  59                 };
  60
  61                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  62                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  63                         break;
  64                 };
  65
  66                 if(mifare_classic_halt(pcs, cuid)) {
  67                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  68                         break;
  69                 };
  70
  71                 isOK = 1;
  72                 break;
  73         }
  74
  75         //  ----------------------------- crypto1 destroy
  76         crypto1_destroy(pcs);
  77
  78         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  79
  80         LED_B_ON();
  81         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  82         LED_B_OFF();
  83
  84         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  85         LEDsoff();
  86 }
  87
  88 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  89
  90         bool turnOffField = (arg0 == 1);
  91
  92         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
  93         clear_trace();
  94         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  95
  96         if(!iso14443a_select_card(NULL, NULL, NULL)) {
  97                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
  98                 OnError(0);
  99                 return;
 100         };
 101
 102         if(!mifare_ultra_auth(keybytes)){
 103                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 104                 OnError(1);
 105                 return;
 106         }
 107
 108         if (turnOffField) {
 109                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 110                 LEDsoff();
 111         }
 112         cmd_send(CMD_ACK,1,0,0,0,0);
 113 }
 114
 115 // Arg0 = BlockNo,
 116 // Arg1 = UsePwd bool
 117 // datain = PWD bytes,
 118 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 119 {
 120         uint8_t blockNo = arg0;
 121         byte_t dataout[16] = {0x00};
 122         bool useKey = (arg1 == 1); //UL_C
 123         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 124
 125         LEDsoff();
 126         LED_A_ON();
 127         clear_trace();
 128         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 129
 130         int len = iso14443a_select_card(NULL, NULL, NULL);
 131         if(!len) {
 132                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 133                 OnError(1);
 134                 return;
 135         }
 136
 137         // UL-C authentication
 138         if ( useKey ) {
 139                 uint8_t key[16] = {0x00};
 140                 memcpy(key, datain, sizeof(key) );
 141
 142                 if ( !mifare_ultra_auth(key) ) {
 143                         OnError(1);
 144                         return;
 145                 }
 146         }
 147
 148         // UL-EV1 / NTAG authentication
 149         if ( usePwd ) {
 150                 uint8_t pwd[4] = {0x00};
 151                 memcpy(pwd, datain, 4);
 152                 uint8_t pack[4] = {0,0,0,0};
 153                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 154                         OnError(1);
 155                         return;
 156                 }
 157         }
 158
 159         if( mifare_ultra_readblock(blockNo, dataout) ) {
 160                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 161                 OnError(2);
 162                 return;
 163         }
 164
 165         if( mifare_ultra_halt() ) {
 166                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 167                 OnError(3);
 168                 return;
 169         }
 170
 171     cmd_send(CMD_ACK,1,0,0,dataout,16);
 172         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 173         LEDsoff();
 174 }
 175
 176 //-----------------------------------------------------------------------------
 177 // Select, Authenticate, Read a MIFARE tag.
 178 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 179 //-----------------------------------------------------------------------------
 180 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 181 {
 182   // params
 183         uint8_t sectorNo = arg0;
 184         uint8_t keyType = arg1;
 185         uint64_t ui64Key = 0;
 186         ui64Key = bytes_to_num(datain, 6);
 187
 188         // variables
 189         byte_t isOK = 0;
 190         byte_t dataoutbuf[16 * 16];
 191         uint8_t uid[10];
 192         uint32_t cuid;
 193         struct Crypto1State mpcs = {0, 0};
 194         struct Crypto1State *pcs;
 195         pcs = &mpcs;
 196
 197         // clear trace
 198         clear_trace();
 199
 200         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 201
 202         LED_A_ON();
 203         LED_B_OFF();
 204         LED_C_OFF();
 205
 206         isOK = 1;
 207         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 208                 isOK = 0;
 209                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 210         }
 211
 212
 213         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 214                 isOK = 0;
 215                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 216         }
 217
 218         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 219                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 220                         isOK = 0;
 221                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 222                         break;
 223                 }
 224         }
 225
 226         if(mifare_classic_halt(pcs, cuid)) {
 227                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 228         }
 229
 230         //  ----------------------------- crypto1 destroy
 231         crypto1_destroy(pcs);
 232
 233         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 234
 235         LED_B_ON();
 236         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 237         LED_B_OFF();
 238
 239         // Thats it...
 240         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 241         LEDsoff();
 242 }
 243
 244 // arg0 = blockNo (start)
 245 // arg1 = Pages (number of blocks)
 246 // arg2 = useKey
 247 // datain = KEY bytes
 248 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 249 {
 250         // free eventually allocated BigBuf memory
 251         BigBuf_free();
 252         clear_trace();
 253
 254         // params
 255         uint8_t blockNo = arg0;
 256         uint16_t blocks = arg1;
 257         bool useKey = (arg2 == 1); //UL_C
 258         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 259         uint32_t countblocks = 0;
 260         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 261         if (dataout == NULL){
 262                 Dbprintf("out of memory");
 263                 OnError(1);
 264                 return;
 265         }
 266
 267         LEDsoff();
 268         LED_A_ON();
 269         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 270
 271         int len = iso14443a_select_card(NULL, NULL, NULL);
 272         if (!len) {
 273                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 274                 OnError(1);
 275                 return;
 276         }
 277
 278         // UL-C authentication
 279         if ( useKey ) {
 280                 uint8_t key[16] = {0x00};
 281                 memcpy(key, datain, sizeof(key) );
 282
 283                 if ( !mifare_ultra_auth(key) ) {
 284                         OnError(1);
 285                         return;
 286                 }
 287         }
 288
 289         // UL-EV1 / NTAG authentication
 290         if (usePwd) {
 291                 uint8_t pwd[4] = {0x00};
 292                 memcpy(pwd, datain, sizeof(pwd));
 293                 uint8_t pack[4] = {0,0,0,0};
 294
 295                 if (!mifare_ul_ev1_auth(pwd, pack)){
 296                         OnError(1);
 297                         return;
 298                 }
 299         }
 300
 301         for (int i = 0; i < blocks; i++){
 302                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 303                         Dbprintf("Data exceeds buffer!!");
 304                         break;
 305                 }
 306
 307                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 308
 309                 if (len) {
 310                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 311                         // if no blocks read - error out
 312                         if (i==0){
 313                                 OnError(2);
 314                         return;
 315                         } else {
 316                                 //stop at last successful read block and return what we got
 317                                 break;
 318                         }
 319                 } else {
 320                         countblocks++;
 321                 }
 322         }
 323
 324         len = mifare_ultra_halt();
 325         if (len) {
 326                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 327                 OnError(3);
 328                 return;
 329         }
 330
 331         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 332
 333         countblocks *= 4;
 334
 335         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 336         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 337         LEDsoff();
 338         BigBuf_free();
 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 /* // Command not needed but left for future testing
 414 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 415 {
 416         uint8_t blockNo = arg0;
 417         byte_t blockdata[16] = {0x00};
 418
 419         memcpy(blockdata, datain, 16);
 420
 421         uint8_t uid[10] = {0x00};
 422
 423         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 424
 425         clear_trace();
 426         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 427
 428         if(!iso14443a_select_card(uid, NULL, NULL)) {
 429                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 430                 OnError(0);
 431                 return;
 432         };
 433
 434         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 435                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 436                 OnError(0);
 437                 return; };
 438
 439         if(mifare_ultra_halt()) {
 440                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 441                 OnError(0);
 442                 return;
 443         };
 444
 445         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 446
 447         cmd_send(CMD_ACK,1,0,0,0,0);
 448         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 449         LEDsoff();
 450 }
 451 */
 452
 453 // Arg0   : Block to write to.
 454 // Arg1   : 0 = use no authentication.
 455 //          1 = use 0x1A authentication.
 456 //          2 = use 0x1B authentication.
 457 // datain : 4 first bytes is data to be written.
 458 //        : 4/16 next bytes is authentication key.
 459 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 460 {
 461         uint8_t blockNo = arg0;
 462         bool useKey = (arg1 == 1); //UL_C
 463         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 464         byte_t blockdata[4] = {0x00};
 465
 466         memcpy(blockdata, datain,4);
 467
 468         LEDsoff();
 469         LED_A_ON();
 470         clear_trace();
 471         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 472
 473         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 474                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 475                 OnError(0);
 476                 return;
 477         };
 478
 479         // UL-C authentication
 480         if ( useKey ) {
 481                 uint8_t key[16] = {0x00};
 482                 memcpy(key, datain+4, sizeof(key) );
 483
 484                 if ( !mifare_ultra_auth(key) ) {
 485                         OnError(1);
 486                         return;
 487                 }
 488         }
 489
 490         // UL-EV1 / NTAG authentication
 491         if (usePwd) {
 492                 uint8_t pwd[4] = {0x00};
 493                 memcpy(pwd, datain+4, 4);
 494                 uint8_t pack[4] = {0,0,0,0};
 495                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 496                         OnError(1);
 497                         return;
 498                 }
 499         }
 500
 501         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 502                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 503                 OnError(0);
 504                 return;
 505         };
 506
 507         if(mifare_ultra_halt()) {
 508                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 509                 OnError(0);
 510                 return;
 511         };
 512
 513         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 514
 515         cmd_send(CMD_ACK,1,0,0,0,0);
 516         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 517         LEDsoff();
 518 }
 519
 520 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 521
 522         uint8_t pwd[16] = {0x00};
 523         byte_t blockdata[4] = {0x00};
 524
 525         memcpy(pwd, datain, 16);
 526
 527         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 528         clear_trace();
 529         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 530
 531         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 532                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 533                 OnError(0);
 534                 return;
 535         };
 536
 537         blockdata[0] = pwd[7];
 538         blockdata[1] = pwd[6];
 539         blockdata[2] = pwd[5];
 540         blockdata[3] = pwd[4];
 541         if(mifare_ultra_writeblock( 44, blockdata)) {
 542                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 543                 OnError(44);
 544                 return;
 545         };
 546
 547         blockdata[0] = pwd[3];
 548         blockdata[1] = pwd[2];
 549         blockdata[2] = pwd[1];
 550         blockdata[3] = pwd[0];
 551         if(mifare_ultra_writeblock( 45, blockdata)) {
 552                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 553                 OnError(45);
 554                 return;
 555         };
 556
 557         blockdata[0] = pwd[15];
 558         blockdata[1] = pwd[14];
 559         blockdata[2] = pwd[13];
 560         blockdata[3] = pwd[12];
 561         if(mifare_ultra_writeblock( 46, blockdata)) {
 562                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 563                 OnError(46);
 564                 return;
 565         };
 566
 567         blockdata[0] = pwd[11];
 568         blockdata[1] = pwd[10];
 569         blockdata[2] = pwd[9];
 570         blockdata[3] = pwd[8];
 571         if(mifare_ultra_writeblock( 47, blockdata)) {
 572                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 573                 OnError(47);
 574                 return;
 575         };
 576
 577         if(mifare_ultra_halt()) {
 578                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 579                 OnError(0);
 580                 return;
 581         };
 582
 583         cmd_send(CMD_ACK,1,0,0,0,0);
 584         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 585         LEDsoff();
 586 }
 587
 588 // Return 1 if the nonce is invalid else return 0
 589 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 590         return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 591         (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 592         (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 593 }
 594
 595
 596 //-----------------------------------------------------------------------------
 597 // MIFARE nested authentication.
 598 //
 599 //-----------------------------------------------------------------------------
 600 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 601 {
 602         // params
 603         uint8_t blockNo = arg0 & 0xff;
 604         uint8_t keyType = (arg0 >> 8) & 0xff;
 605         uint8_t targetBlockNo = arg1 & 0xff;
 606         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 607         uint64_t ui64Key = 0;
 608
 609         ui64Key = bytes_to_num(datain, 6);
 610
 611         // variables
 612         uint16_t rtr, i, j, len;
 613         uint16_t davg;
 614         static uint16_t dmin, dmax;
 615         uint8_t uid[10];
 616         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 617         uint8_t par[1];
 618         uint32_t target_nt[2], target_ks[2];
 619
 620         uint8_t par_array[4];
 621         uint16_t ncount = 0;
 622         struct Crypto1State mpcs = {0, 0};
 623         struct Crypto1State *pcs;
 624         pcs = &mpcs;
 625         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 626
 627         uint32_t auth1_time, auth2_time;
 628         static uint16_t delta_time;
 629
 630         // free eventually allocated BigBuf memory
 631         BigBuf_free();
 632         // clear trace
 633         clear_trace();
 634         set_tracing(false);
 635
 636         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 637
 638         LED_A_ON();
 639         LED_C_OFF();
 640
 641
 642         // statistics on nonce distance
 643         int16_t isOK = 0;
 644         #define NESTED_MAX_TRIES 12
 645         uint16_t unsuccessfull_tries = 0;
 646         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 647                 LED_B_ON();
 648                 WDT_HIT();
 649
 650                 davg = dmax = 0;
 651                 dmin = 2000;
 652                 delta_time = 0;
 653
 654                 for (rtr = 0; rtr < 17; rtr++) {
 655
 656                         // Test if the action was cancelled
 657                         if(BUTTON_PRESS()) {
 658                                 isOK = -2;
 659                                 break;
 660                         }
 661
 662                         // prepare next select. No need to power down the card.
 663                         if(mifare_classic_halt(pcs, cuid)) {
 664                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 665                                 rtr--;
 666                                 continue;
 667                         }
 668
 669                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 670                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 671                                 rtr--;
 672                                 continue;
 673                         };
 674
 675                         auth1_time = 0;
 676                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 677                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 678                                 rtr--;
 679                                 continue;
 680                         };
 681
 682                         if (delta_time) {
 683                                 auth2_time = auth1_time + delta_time;
 684                         } else {
 685                                 auth2_time = 0;
 686                         }
 687                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 688                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 689                                 rtr--;
 690                                 continue;
 691                         };
 692
 693                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 694                         for (i = 101; i < 1200; i++) {
 695                                 nttmp = prng_successor(nttmp, 1);
 696                                 if (nttmp == nt2) break;
 697                         }
 698
 699                         if (i != 1200) {
 700                                 if (rtr != 0) {
 701                                         davg += i;
 702                                         dmin = MIN(dmin, i);
 703                                         dmax = MAX(dmax, i);
 704                                 }
 705                                 else {
 706                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 707                                 }
 708                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 709                         } else {
 710                                 unsuccessfull_tries++;
 711                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 712                                         isOK = -3;
 713                                 }
 714                         }
 715                 }
 716
 717                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 718
 719                 if (MF_DBGLEVEL >= 3) Dbprintf("rtr=%d isOK=%d min=%d max=%d avg=%d, delta_time=%d", rtr, isOK, dmin, dmax, davg, delta_time);
 720
 721                 dmin = davg - 2;
 722                 dmax = davg + 2;
 723
 724                 LED_B_OFF();
 725
 726         }
 727 //  -------------------------------------------------------------------------------------------------
 728
 729         LED_C_ON();
 730
 731         //  get crypted nonces for target sector
 732         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 733
 734                 target_nt[i] = 0;
 735                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 736
 737                         // prepare next select. No need to power down the card.
 738                         if(mifare_classic_halt(pcs, cuid)) {
 739                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 740                                 continue;
 741                         }
 742
 743                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 744                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 745                                 continue;
 746                         };
 747
 748                         auth1_time = 0;
 749                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 750                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 751                                 continue;
 752                         };
 753
 754                         // nested authentication
 755                         auth2_time = auth1_time + delta_time;
 756                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 757                         if (len != 4) {
 758                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 759                                 continue;
 760                         };
 761
 762                         nt2 = bytes_to_num(receivedAnswer, 4);
 763                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 764
 765                         // Parity validity check
 766                         for (j = 0; j < 4; j++) {
 767                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 768                         }
 769
 770                         ncount = 0;
 771                         nttest = prng_successor(nt1, dmin - 1);
 772                         for (j = dmin; j < dmax + 1; j++) {
 773                                 nttest = prng_successor(nttest, 1);
 774                                 ks1 = nt2 ^ nttest;
 775
 776                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 777                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 778                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 779                                                 target_nt[i] = 0;
 780                                                 break;
 781                                         }
 782                                         target_nt[i] = nttest;
 783                                         target_ks[i] = ks1;
 784                                         ncount++;
 785                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 786                                                 target_nt[i] = 0;
 787                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 788                                                 break;
 789                                         }
 790                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 791                                 }
 792                         }
 793                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 794                 }
 795         }
 796
 797         LED_C_OFF();
 798
 799         //  ----------------------------- crypto1 destroy
 800         crypto1_destroy(pcs);
 801
 802         byte_t buf[4 + 4 * 4];
 803         memcpy(buf, &cuid, 4);
 804         memcpy(buf+4, &target_nt[0], 4);
 805         memcpy(buf+8, &target_ks[0], 4);
 806         memcpy(buf+12, &target_nt[1], 4);
 807         memcpy(buf+16, &target_ks[1], 4);
 808
 809         LED_B_ON();
 810         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 811         LED_B_OFF();
 812
 813         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 814
 815         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 816         LEDsoff();
 817         set_tracing(TRUE);
 818 }
 819
 820 //-----------------------------------------------------------------------------
 821 // MIFARE check keys. key count up to 85.
 822 //
 823 //-----------------------------------------------------------------------------
 824 void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 825 {
 826   // params
 827         uint8_t blockNo = arg0;
 828         uint8_t keyType = arg1;
 829         uint8_t keyCount = arg2;
 830         uint64_t ui64Key = 0;
 831
 832         // variables
 833         int i;
 834         byte_t isOK = 0;
 835         uint8_t uid[10];
 836         uint32_t cuid;
 837         struct Crypto1State mpcs = {0, 0};
 838         struct Crypto1State *pcs;
 839         pcs = &mpcs;
 840
 841         // clear debug level
 842         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 843         MF_DBGLEVEL = MF_DBG_NONE;
 844
 845         // clear trace
 846         clear_trace();
 847         set_tracing(TRUE);
 848
 849         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 850
 851         LED_A_ON();
 852         LED_B_OFF();
 853         LED_C_OFF();
 854
 855         for (i = 0; i < keyCount; i++) {
 856                 if(mifare_classic_halt(pcs, cuid)) {
 857                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 858                 }
 859
 860                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 861                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 862                         break;
 863                 };
 864
 865                 ui64Key = bytes_to_num(datain + i * 6, 6);
 866                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 867                         continue;
 868                 };
 869
 870                 isOK = 1;
 871                 break;
 872         }
 873
 874         //  ----------------------------- crypto1 destroy
 875         crypto1_destroy(pcs);
 876
 877         LED_B_ON();
 878     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 879         LED_B_OFF();
 880
 881         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 882         LEDsoff();
 883
 884         // restore debug level
 885         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 886 }
 887
 888 //-----------------------------------------------------------------------------
 889 // MIFARE commands set debug level
 890 //
 891 //-----------------------------------------------------------------------------
 892 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 893         MF_DBGLEVEL = arg0;
 894         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 895 }
 896
 897 //-----------------------------------------------------------------------------
 898 // Work with emulator memory
 899 //
 900 //-----------------------------------------------------------------------------
 901 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 902         emlClearMem();
 903 }
 904
 905 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 906         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 907 }
 908
 909 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 910         byte_t buf[USB_CMD_DATA_SIZE];
 911         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 912
 913         LED_B_ON();
 914         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 915         LED_B_OFF();
 916 }
 917
 918 //-----------------------------------------------------------------------------
 919 // Load a card into the emulator memory
 920 //
 921 //-----------------------------------------------------------------------------
 922 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 923         uint8_t numSectors = arg0;
 924         uint8_t keyType = arg1;
 925         uint64_t ui64Key = 0;
 926         uint32_t cuid;
 927         struct Crypto1State mpcs = {0, 0};
 928         struct Crypto1State *pcs;
 929         pcs = &mpcs;
 930
 931         // variables
 932         byte_t dataoutbuf[16];
 933         byte_t dataoutbuf2[16];
 934         uint8_t uid[10];
 935
 936         // clear trace
 937         clear_trace();
 938         set_tracing(false);
 939
 940         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 941
 942         LED_A_ON();
 943         LED_B_OFF();
 944         LED_C_OFF();
 945
 946         bool isOK = true;
 947
 948         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 949                 isOK = false;
 950                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 951         }
 952
 953         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 954                 ui64Key = emlGetKey(sectorNo, keyType);
 955                 if (sectorNo == 0){
 956                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 957                                 isOK = false;
 958                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 959                                 break;
 960                         }
 961                 } else {
 962                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 963                                 isOK = false;
 964                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 965                                 break;
 966                         }
 967                 }
 968
 969                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 970                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 971                                 isOK = false;
 972                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 973                                 break;
 974                         };
 975                         if (isOK) {
 976                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 977                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 978                                 } else {        // sector trailer, keep the keys, set only the AC
 979                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 980                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 981                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 982                                 }
 983                         }
 984                 }
 985
 986         }
 987
 988         if(mifare_classic_halt(pcs, cuid)) {
 989                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 990         };
 991
 992         //  ----------------------------- crypto1 destroy
 993         crypto1_destroy(pcs);
 994
 995         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 996         LEDsoff();
 997
 998         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
 999
1000 }
1001
1002
1003 //-----------------------------------------------------------------------------
1004 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1005 //
1006 //-----------------------------------------------------------------------------
1007 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1008
1009   // params
1010         uint8_t needWipe = arg0;
1011         // bit 0 - need get UID
1012         // bit 1 - need wupC
1013         // bit 2 - need HALT after sequence
1014         // bit 3 - need init FPGA and field before sequence
1015         // bit 4 - need reset FPGA and LED
1016         uint8_t workFlags = arg1;
1017         uint8_t blockNo = arg2;
1018
1019         // card commands
1020         uint8_t wupC1[]       = { 0x40 };
1021         uint8_t wupC2[]       = { 0x43 };
1022         uint8_t wipeC[]       = { 0x41 };
1023
1024         // variables
1025         byte_t isOK = 0;
1026         uint8_t uid[10] = {0x00};
1027         uint8_t d_block[18] = {0x00};
1028         uint32_t cuid;
1029
1030         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1031         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1032
1033         // reset FPGA and LED
1034         if (workFlags & 0x08) {
1035                 LED_A_ON();
1036                 LED_B_OFF();
1037                 LED_C_OFF();
1038
1039                 clear_trace();
1040                 set_tracing(TRUE);
1041                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1042         }
1043
1044         while (true) {
1045
1046                 // get UID from chip
1047                 if (workFlags & 0x01) {
1048                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
1049                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1050                                 //break;
1051                         };
1052
1053                         if(mifare_classic_halt(NULL, cuid)) {
1054                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1055                                 //break;
1056                         };
1057                 };
1058
1059                 // reset chip
1060                 if (needWipe){
1061                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1062                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1063                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1064                                 break;
1065                         };
1066
1067                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1068                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1069                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1070                                 break;
1071                         };
1072
1073                         if(mifare_classic_halt(NULL, cuid)) {
1074                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1075                                 break;
1076                         };
1077                 };
1078
1079                 // write block
1080                 if (workFlags & 0x02) {
1081                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1082                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1083                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1084                                 break;
1085                         };
1086
1087                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1088                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1089                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1090                                 break;
1091                         };
1092                 }
1093
1094                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1095                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1096                         break;
1097                 };
1098
1099                 memcpy(d_block, datain, 16);
1100                 AppendCrc14443a(d_block, 16);
1101
1102                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1103                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1104                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1105                         break;
1106                 };
1107
1108                 if (workFlags & 0x04) {
1109                         if (mifare_classic_halt(NULL, cuid)) {
1110                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1111                                 break;
1112                         };
1113                 }
1114
1115                 isOK = 1;
1116                 break;
1117         }
1118
1119         LED_B_ON();
1120         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1121         LED_B_OFF();
1122
1123         if ((workFlags & 0x10) || (!isOK)) {
1124                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1125                 LEDsoff();
1126         }
1127 }
1128
1129
1130 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1131
1132   // params
1133         // bit 1 - need wupC
1134         // bit 2 - need HALT after sequence
1135         // bit 3 - need init FPGA and field before sequence
1136         // bit 4 - need reset FPGA and LED
1137         uint8_t workFlags = arg0;
1138         uint8_t blockNo = arg2;
1139
1140         // card commands
1141         uint8_t wupC1[]       = { 0x40 };
1142         uint8_t wupC2[]       = { 0x43 };
1143
1144         // variables
1145         byte_t isOK = 0;
1146         uint8_t data[18] = {0x00};
1147         uint32_t cuid = 0;
1148
1149         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1150         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1151
1152         if (workFlags & 0x08) {
1153                 LED_A_ON();
1154                 LED_B_OFF();
1155                 LED_C_OFF();
1156
1157                 clear_trace();
1158                 set_tracing(TRUE);
1159                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1160         }
1161
1162         while (true) {
1163                 if (workFlags & 0x02) {
1164                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1165                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1166                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1167                                 break;
1168                         };
1169
1170                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1171                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1172                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1173                                 break;
1174                         };
1175                 }
1176
1177                 // read block
1178                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1179                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1180                         break;
1181                 };
1182                 memcpy(data, receivedAnswer, 18);
1183
1184                 if (workFlags & 0x04) {
1185                         if (mifare_classic_halt(NULL, cuid)) {
1186                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1187                                 break;
1188                         };
1189                 }
1190
1191                 isOK = 1;
1192                 break;
1193         }
1194
1195         LED_B_ON();
1196         cmd_send(CMD_ACK,isOK,0,0,data,18);
1197         LED_B_OFF();
1198
1199         if ((workFlags & 0x10) || (!isOK)) {
1200                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1201                 LEDsoff();
1202         }
1203 }
1204
1205 void MifareCIdent(){
1206
1207         // card commands
1208         uint8_t wupC1[]       = { 0x40 };
1209         uint8_t wupC2[]       = { 0x43 };
1210
1211         // variables
1212         byte_t isOK = 1;
1213
1214         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1215         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1216
1217         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1218         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1219                 isOK = 0;
1220         };
1221
1222         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1223         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1224                 isOK = 0;
1225         };
1226
1227         if (mifare_classic_halt(NULL, 0)) {
1228                 isOK = 0;
1229         };
1230
1231         cmd_send(CMD_ACK,isOK,0,0,0,0);
1232 }
1233
1234 void MifareCollectNonces(uint32_t arg0, uint32_t arg1){
1235
1236         BigBuf_free();
1237
1238         uint32_t iterations = arg0;
1239         uint8_t uid[10] = {0x00};
1240
1241         uint8_t *response = BigBuf_malloc(MAX_MIFARE_FRAME_SIZE);
1242         uint8_t *responsePar = BigBuf_malloc(MAX_MIFARE_PARITY_SIZE);
1243
1244         uint8_t mf_auth[] = { 0x60,0x00,0xf5,0x7b };
1245
1246         // get memory from BigBuf.
1247         uint8_t *nonces = BigBuf_malloc(iterations * 4);
1248
1249         LED_A_ON();
1250         LED_B_OFF();
1251         LED_C_OFF();
1252
1253         clear_trace();
1254         set_tracing(TRUE);
1255         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1256
1257         for (int i = 0; i < iterations; i++) {
1258
1259                 WDT_HIT();
1260
1261                 // Test if the action was cancelled
1262                 if(BUTTON_PRESS()) break;
1263
1264                 //              if(mifare_classic_halt(pcs, cuid)) {
1265                 //                      if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
1266                 //}
1267
1268                 if(!iso14443a_select_card(uid, NULL, NULL)) {
1269                         if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
1270                         continue;
1271                 };
1272
1273                 // Transmit MIFARE_CLASSIC_AUTH.
1274                 ReaderTransmit(mf_auth, sizeof(mf_auth), NULL);
1275
1276                 // Receive the (4 Byte) "random" nonce
1277                 if (!ReaderReceive(response, responsePar)) {
1278                         if (MF_DBGLEVEL >= 1)   Dbprintf("Couldn't receive tag nonce");
1279                         continue;
1280                 }
1281
1282                 nonces[i*4] = bytes_to_num(response, 4);
1283         }
1284
1285         int packLen =  iterations * 4;
1286         int packSize = 0;
1287         int packNum = 0;
1288         while (packLen > 0) {
1289                 packSize = MIN(USB_CMD_DATA_SIZE, packLen);
1290                 LED_B_ON();
1291                 cmd_send(CMD_ACK, 77, 0, packSize, nonces - packLen, packSize);
1292                 LED_B_OFF();
1293
1294                 packLen -= packSize;
1295                 packNum++;
1296         }
1297         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1298         LEDsoff();
1299 }
1300
1301 //
1302 // DESFIRE
1303 //
1304
1305 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1306
1307         byte_t dataout[11] = {0x00};
1308         uint8_t uid[10] = {0x00};
1309         uint32_t cuid = 0x00;
1310
1311         clear_trace();
1312         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1313
1314         int len = iso14443a_select_card(uid, NULL, &cuid);
1315         if(!len) {
1316                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1317                 OnError(1);
1318                 return;
1319         };
1320
1321         if(mifare_desfire_des_auth1(cuid, dataout)){
1322                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1323                 OnError(4);
1324                 return;
1325         }
1326
1327         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1328     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1329 }
1330
1331 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1332
1333         uint32_t cuid = arg0;
1334         uint8_t key[16] = {0x00};
1335         byte_t dataout[12] = {0x00};
1336         byte_t isOK = 0;
1337
1338         memcpy(key, datain, 16);
1339
1340         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1341
1342         if( isOK) {
1343             if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1344                 OnError(4);
1345                 return;
1346         }
1347
1348         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1349
1350         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1351         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1352         LEDsoff();
1353 }