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 "desfire.h"
  20 #include "../common/crc.h"
  21
  22 //-----------------------------------------------------------------------------
  23 // Select, Authenticaate, Read an 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         iso14a_clear_trace();
  45         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  46
  47         LED_A_ON();
  48         LED_B_OFF();
  49         LED_C_OFF();
  50
  51         while (true) {
  52                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
  53                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  54                         break;
  55                 };
  56
  57                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  58                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  59                         break;
  60                 };
  61
  62                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  63                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  64                         break;
  65                 };
  66
  67                 if(mifare_classic_halt(pcs, cuid)) {
  68                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  69                         break;
  70                 };
  71
  72                 isOK = 1;
  73                 break;
  74         }
  75
  76         //  ----------------------------- crypto1 destroy
  77         crypto1_destroy(pcs);
  78
  79         if (MF_DBGLEVEL >= 2) DbpString("READ BLOCK FINISHED");
  80
  81         LED_B_ON();
  82         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  83         LED_B_OFF();
  84
  85         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  86         LEDsoff();
  87 }
  88
  89
  90 void MifareUC_Auth1(uint8_t arg0, uint8_t *datain){
  91         // variables
  92         byte_t isOK = 0;
  93         byte_t dataoutbuf[16];
  94         uint8_t uid[10];
  95         uint32_t cuid;
  96
  97         // clear trace
  98         iso14a_clear_trace();
  99         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 100
 101         LED_A_ON();
 102         LED_B_OFF();
 103         LED_C_OFF();
 104
 105
 106         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 107           if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card, something went wrong before auth");
 108         };
 109
 110         if(mifare_ultra_auth1(cuid, dataoutbuf)){
 111           if (MF_DBGLEVEL >= 1) Dbprintf("Authentication part1: Fail.");
 112         }
 113
 114         isOK=1;
 115         if (MF_DBGLEVEL >= 2)   DbpString("AUTH 1 FINISHED");
 116
 117         LED_B_ON();
 118     cmd_send(CMD_ACK,isOK,cuid,0,dataoutbuf,11);
 119         LED_B_OFF();
 120
 121         // Thats it...
 122         LEDsoff();
 123 }
 124 void MifareUC_Auth2(uint32_t arg0, uint8_t *datain){
 125         // params
 126         uint32_t cuid = arg0;
 127         uint8_t key[16]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
 128         // variables
 129         byte_t isOK = 0;
 130         byte_t dataoutbuf[16];
 131
 132         memcpy(key, datain, 16);
 133
 134         LED_A_ON();
 135         LED_B_OFF();
 136         LED_C_OFF();
 137
 138         if(mifare_ultra_auth2(cuid, key, dataoutbuf)){
 139             if (MF_DBGLEVEL >= 1) Dbprintf("Authentication part2: Fail...");
 140         }
 141         isOK=1;
 142         if (MF_DBGLEVEL >= 2)   DbpString("AUTH 2 FINISHED");
 143
 144         LED_B_ON();
 145         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,11);
 146         LED_B_OFF();
 147
 148         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 149         LEDsoff();
 150 }
 151
 152 void MifareUReadBlock(uint8_t arg0,uint8_t *datain)
 153 {
 154     // params
 155         uint8_t blockNo = arg0;
 156
 157         // variables
 158         byte_t isOK = 0;
 159         byte_t dataoutbuf[16];
 160         uint8_t uid[10];
 161         uint32_t cuid;
 162
 163         // clear trace
 164         iso14a_clear_trace();
 165         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 166
 167         LED_A_ON();
 168         LED_B_OFF();
 169         LED_C_OFF();
 170
 171         while (true) {
 172                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 173             if (MF_DBGLEVEL >= 1)       Dbprintf("Can't select card");
 174                         break;
 175                 };
 176
 177                 if(mifare_ultra_readblock(cuid, blockNo, dataoutbuf)) {
 178             if (MF_DBGLEVEL >= 1)       Dbprintf("Read block error");
 179                         break;
 180                 };
 181
 182                 if(mifare_ultra_halt(cuid)) {
 183             if (MF_DBGLEVEL >= 1)       Dbprintf("Halt error");
 184                         break;
 185                 };
 186
 187                 isOK = 1;
 188                 break;
 189         }
 190
 191         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
 192
 193         LED_B_ON();
 194     cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
 195         LED_B_OFF();
 196         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 197         LEDsoff();
 198 }
 199
 200 //-----------------------------------------------------------------------------
 201 // Select, Authenticate, Read a MIFARE tag.
 202 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 203 //-----------------------------------------------------------------------------
 204 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 205 {
 206   // params
 207         uint8_t sectorNo = arg0;
 208         uint8_t keyType = arg1;
 209         uint64_t ui64Key = 0;
 210         ui64Key = bytes_to_num(datain, 6);
 211
 212         // variables
 213         byte_t isOK = 0;
 214         byte_t dataoutbuf[16 * 16];
 215         uint8_t uid[10];
 216         uint32_t cuid;
 217         struct Crypto1State mpcs = {0, 0};
 218         struct Crypto1State *pcs;
 219         pcs = &mpcs;
 220
 221         // clear trace
 222         iso14a_clear_trace();
 223
 224         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 225
 226         LED_A_ON();
 227         LED_B_OFF();
 228         LED_C_OFF();
 229
 230         isOK = 1;
 231         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 232                 isOK = 0;
 233                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 234         }
 235
 236
 237         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 238                 isOK = 0;
 239                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 240         }
 241
 242         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 243                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 244                         isOK = 0;
 245                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 246                         break;
 247                 }
 248         }
 249
 250         if(mifare_classic_halt(pcs, cuid)) {
 251                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 252         }
 253
 254         //  ----------------------------- crypto1 destroy
 255         crypto1_destroy(pcs);
 256
 257         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 258
 259         LED_B_ON();
 260         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 261         LED_B_OFF();
 262
 263         // Thats it...
 264         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 265         LEDsoff();
 266 }
 267
 268 void MifareUReadCard(uint8_t arg0, int arg1, uint8_t *datain)
 269 {
 270   // params
 271         uint8_t sectorNo = arg0;
 272         int Pages=arg1;
 273         int count_Pages=0;
 274         // variables
 275         byte_t isOK = 0;
 276         byte_t dataoutbuf[44 * 4];
 277         uint8_t uid[10];
 278         uint32_t cuid;
 279
 280         // clear trace
 281         iso14a_clear_trace();
 282
 283                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 284
 285         LED_A_ON();
 286         LED_B_OFF();
 287         LED_C_OFF();
 288         Dbprintf("Pages %d",Pages);
 289         while (true) {
 290                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 291                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 292                         break;
 293                 };
 294                 for(int sec=0;sec<Pages;sec++){
 295                     if(mifare_ultra_readblock(cuid, sectorNo * 4 + sec, dataoutbuf + 4 * sec)) {
 296                     if (MF_DBGLEVEL >= 1)   Dbprintf("Read block %d error",sec);
 297                         break;
 298                     }else{
 299                       count_Pages++;
 300                     };
 301                 }
 302                 if(mifare_ultra_halt(cuid)) {
 303                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 304                         break;
 305                 };
 306
 307                 isOK = 1;
 308                 break;
 309         }
 310         Dbprintf("Pages read %d",count_Pages);
 311         if (MF_DBGLEVEL >= 2) DbpString("READ CARD FINISHED");
 312
 313         LED_B_ON();
 314         if (Pages==16) cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,64);
 315         if (Pages==44 && count_Pages==16) cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,64);
 316         if (Pages==44 && count_Pages>16) cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,176);
 317         LED_B_OFF();
 318
 319         // Thats it...
 320         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 321         LEDsoff();
 322
 323 }
 324
 325
 326 //-----------------------------------------------------------------------------
 327 // Select, Authenticate, Write a MIFARE tag.
 328 // read block
 329 //-----------------------------------------------------------------------------
 330 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 331 {
 332         // params
 333         uint8_t blockNo = arg0;
 334         uint8_t keyType = arg1;
 335         uint64_t ui64Key = 0;
 336         byte_t blockdata[16];
 337
 338         ui64Key = bytes_to_num(datain, 6);
 339         memcpy(blockdata, datain + 10, 16);
 340
 341         // variables
 342         byte_t isOK = 0;
 343         uint8_t uid[10];
 344         uint32_t cuid;
 345         struct Crypto1State mpcs = {0, 0};
 346         struct Crypto1State *pcs;
 347         pcs = &mpcs;
 348
 349         // clear trace
 350         iso14a_clear_trace();
 351
 352         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 353
 354         LED_A_ON();
 355         LED_B_OFF();
 356         LED_C_OFF();
 357
 358         while (true) {
 359                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 360                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 361                         break;
 362                 };
 363
 364                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 365                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 366                         break;
 367                 };
 368
 369                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 370                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 371                         break;
 372                 };
 373
 374                 if(mifare_classic_halt(pcs, cuid)) {
 375                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 376                         break;
 377                 };
 378
 379                 isOK = 1;
 380                 break;
 381         }
 382
 383         //  ----------------------------- crypto1 destroy
 384         crypto1_destroy(pcs);
 385
 386         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 387
 388         LED_B_ON();
 389         cmd_send(CMD_ACK,isOK,0,0,0,0);
 390         LED_B_OFF();
 391
 392
 393         // Thats it...
 394         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 395         LEDsoff();
 396 }
 397
 398 void MifareUWriteBlock(uint8_t arg0, uint8_t *datain)
 399 {
 400         // params
 401         uint8_t blockNo = arg0;
 402         byte_t blockdata[16];
 403
 404         memset(blockdata,'\0',16);
 405         memcpy(blockdata, datain,16);
 406
 407         // variables
 408         byte_t isOK = 0;
 409         uint8_t uid[10];
 410         uint32_t cuid;
 411
 412         // clear trace
 413         iso14a_clear_trace();
 414
 415                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 416
 417         LED_A_ON();
 418         LED_B_OFF();
 419         LED_C_OFF();
 420
 421         while (true) {
 422                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 423                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 424                         break;
 425                 };
 426
 427                 if(mifare_ultra_writeblock(cuid, blockNo, blockdata)) {
 428                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 429                         break;
 430                 };
 431
 432                 if(mifare_ultra_halt(cuid)) {
 433                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 434                         break;
 435                 };
 436
 437                 isOK = 1;
 438                 break;
 439         }
 440
 441         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 442
 443         LED_B_ON();
 444                 cmd_send(CMD_ACK,isOK,0,0,0,0);
 445         LED_B_OFF();
 446
 447
 448         // Thats it...
 449         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 450         LEDsoff();
 451 //  iso14a_set_tracing(TRUE);
 452 }
 453
 454 void MifareUWriteBlock_Special(uint8_t arg0, uint8_t *datain)
 455 {
 456         // params
 457         uint8_t blockNo = arg0;
 458         byte_t blockdata[4];
 459
 460         memcpy(blockdata, datain,4);
 461
 462         // variables
 463         byte_t isOK = 0;
 464         uint8_t uid[10];
 465         uint32_t cuid;
 466
 467         // clear trace
 468         iso14a_clear_trace();
 469
 470         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 471
 472         LED_A_ON();
 473         LED_B_OFF();
 474         LED_C_OFF();
 475
 476         while (true) {
 477                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 478                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 479                         break;
 480                 };
 481
 482                 if(mifare_ultra_special_writeblock(cuid, blockNo, blockdata)) {
 483                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 484                         break;
 485                 };
 486
 487                 if(mifare_ultra_halt(cuid)) {
 488                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 489                         break;
 490                 };
 491
 492                 isOK = 1;
 493                 break;
 494         }
 495
 496         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 497
 498         LED_B_ON();
 499         cmd_send(CMD_ACK,isOK,0,0,0,0);
 500         LED_B_OFF();
 501
 502         // Thats it...
 503         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 504         LEDsoff();
 505 }
 506
 507 // Return 1 if the nonce is invalid else return 0
 508 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, byte_t * parity) {
 509         return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 510         (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 511         (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 512 }
 513
 514
 515 //-----------------------------------------------------------------------------
 516 // MIFARE nested authentication.
 517 //
 518 //-----------------------------------------------------------------------------
 519 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 520 {
 521         // params
 522         uint8_t blockNo = arg0 & 0xff;
 523         uint8_t keyType = (arg0 >> 8) & 0xff;
 524         uint8_t targetBlockNo = arg1 & 0xff;
 525         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 526         uint64_t ui64Key = 0;
 527
 528         ui64Key = bytes_to_num(datain, 6);
 529
 530         // variables
 531         uint16_t rtr, i, j, len;
 532         uint16_t davg;
 533         static uint16_t dmin, dmax;
 534         uint8_t uid[10];
 535         uint32_t cuid, nt1, nt2, nttmp, nttest, par, ks1;
 536         uint32_t target_nt[2], target_ks[2];
 537
 538         uint8_t par_array[4];
 539         uint16_t ncount = 0;
 540         struct Crypto1State mpcs = {0, 0};
 541         struct Crypto1State *pcs;
 542         pcs = &mpcs;
 543         uint8_t* receivedAnswer = mifare_get_bigbufptr();
 544
 545         uint32_t auth1_time, auth2_time;
 546         static uint16_t delta_time;
 547
 548         // clear trace
 549         iso14a_clear_trace();
 550         iso14a_set_tracing(false);
 551
 552         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 553
 554         LED_A_ON();
 555         LED_C_OFF();
 556
 557
 558         // statistics on nonce distance
 559         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 560                 LED_B_ON();
 561                 WDT_HIT();
 562
 563                 davg = dmax = 0;
 564                 dmin = 2000;
 565                 delta_time = 0;
 566
 567                 for (rtr = 0; rtr < 17; rtr++) {
 568
 569                         // prepare next select. No need to power down the card.
 570                         if(mifare_classic_halt(pcs, cuid)) {
 571                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 572                                 rtr--;
 573                                 continue;
 574                         }
 575
 576                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 577                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 578                                 rtr--;
 579                                 continue;
 580                         };
 581
 582                         auth1_time = 0;
 583                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 584                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 585                                 rtr--;
 586                                 continue;
 587                         };
 588
 589                         if (delta_time) {
 590                                 auth2_time = auth1_time + delta_time;
 591                         } else {
 592                                 auth2_time = 0;
 593                         }
 594                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 595                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 596                                 rtr--;
 597                                 continue;
 598                         };
 599
 600                         nttmp = prng_successor(nt1, 140);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 601                         for (i = 141; i < 1200; i++) {
 602                                 nttmp = prng_successor(nttmp, 1);
 603                                 if (nttmp == nt2) {break;}
 604                         }
 605
 606                         if (i != 1200) {
 607                                 if (rtr != 0) {
 608                                         davg += i;
 609                                         dmin = MIN(dmin, i);
 610                                         dmax = MAX(dmax, i);
 611                                 }
 612                                 else {
 613                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 614                                 }
 615                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 616                         }
 617                 }
 618
 619                 if (rtr <= 1) return;
 620
 621                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 622
 623                 if (MF_DBGLEVEL >= 3) Dbprintf("min=%d max=%d avg=%d, delta_time=%d", dmin, dmax, davg, delta_time);
 624
 625                 dmin = davg - 2;
 626                 dmax = davg + 2;
 627
 628                 LED_B_OFF();
 629
 630         }
 631 //  -------------------------------------------------------------------------------------------------
 632
 633         LED_C_ON();
 634
 635         //  get crypted nonces for target sector
 636         for(i=0; i < 2; i++) { // look for exactly two different nonces
 637
 638                 WDT_HIT();
 639             if(BUTTON_PRESS()) {
 640                         DbpString("Nested: cancelled");
 641                         crypto1_destroy(pcs);
 642                         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 643                         LEDsoff();
 644                         return;
 645                 }
 646
 647                 target_nt[i] = 0;
 648                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 649
 650                         // prepare next select. No need to power down the card.
 651                         if(mifare_classic_halt(pcs, cuid)) {
 652                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 653                                 continue;
 654                         }
 655
 656                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 657                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 658                                 continue;
 659                         };
 660
 661                         auth1_time = 0;
 662                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 663                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 664                                 continue;
 665                         };
 666
 667                         // nested authentication
 668                         auth2_time = auth1_time + delta_time;
 669                         len = mifare_sendcmd_shortex(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, &par, &auth2_time);
 670                         if (len != 4) {
 671                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 672                                 continue;
 673                         };
 674
 675                         nt2 = bytes_to_num(receivedAnswer, 4);
 676                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par);
 677
 678                         // Parity validity check
 679                         for (j = 0; j < 4; j++) {
 680                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par & 0x08) >> 3));
 681                                 par = par << 1;
 682                         }
 683
 684                         ncount = 0;
 685                         nttest = prng_successor(nt1, dmin - 1);
 686                         for (j = dmin; j < dmax + 1; j++) {
 687                                 nttest = prng_successor(nttest, 1);
 688                                 ks1 = nt2 ^ nttest;
 689
 690                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 691                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 692                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 693                                                 target_nt[i] = 0;
 694                                                 break;
 695                                         }
 696                                         target_nt[i] = nttest;
 697                                         target_ks[i] = ks1;
 698                                         ncount++;
 699                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 700                                                 target_nt[i] = 0;
 701                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 702                                                 break;
 703                                         }
 704                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 705                                 }
 706                         }
 707                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 708                 }
 709         }
 710
 711         LED_C_OFF();
 712
 713         //  ----------------------------- crypto1 destroy
 714         crypto1_destroy(pcs);
 715
 716         // add trace trailer
 717         memset(uid, 0x44, 4);
 718         LogTrace(uid, 4, 0, 0, TRUE);
 719
 720         byte_t buf[4 + 4 * 4];
 721         memcpy(buf, &cuid, 4);
 722         memcpy(buf+4, &target_nt[0], 4);
 723         memcpy(buf+8, &target_ks[0], 4);
 724         memcpy(buf+12, &target_nt[1], 4);
 725         memcpy(buf+16, &target_ks[1], 4);
 726
 727         LED_B_ON();
 728         cmd_send(CMD_ACK, 0, 2, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 729         LED_B_OFF();
 730
 731         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 732
 733         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 734         LEDsoff();
 735         iso14a_set_tracing(TRUE);
 736 }
 737
 738 //-----------------------------------------------------------------------------
 739 // MIFARE check keys. key count up to 85.
 740 //
 741 //-----------------------------------------------------------------------------
 742 void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 743 {
 744   // params
 745         uint8_t blockNo = arg0;
 746         uint8_t keyType = arg1;
 747         uint8_t keyCount = arg2;
 748         uint64_t ui64Key = 0;
 749
 750         // variables
 751         int i;
 752         byte_t isOK = 0;
 753         uint8_t uid[10];
 754         uint32_t cuid;
 755         struct Crypto1State mpcs = {0, 0};
 756         struct Crypto1State *pcs;
 757         pcs = &mpcs;
 758
 759         // clear debug level
 760         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 761         MF_DBGLEVEL = MF_DBG_NONE;
 762
 763         // clear trace
 764         iso14a_clear_trace();
 765         iso14a_set_tracing(TRUE);
 766
 767         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 768
 769         LED_A_ON();
 770         LED_B_OFF();
 771         LED_C_OFF();
 772
 773         for (i = 0; i < keyCount; i++) {
 774                 if(mifare_classic_halt(pcs, cuid)) {
 775                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 776                 }
 777
 778                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 779                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 780                         break;
 781                 };
 782
 783                 ui64Key = bytes_to_num(datain + i * 6, 6);
 784                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 785                         continue;
 786                 };
 787
 788                 isOK = 1;
 789                 break;
 790         }
 791
 792         //  ----------------------------- crypto1 destroy
 793         crypto1_destroy(pcs);
 794
 795         LED_B_ON();
 796     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 797         LED_B_OFF();
 798
 799   // Thats it...
 800         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 801         LEDsoff();
 802
 803         // restore debug level
 804         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 805 }
 806
 807 //-----------------------------------------------------------------------------
 808 // MIFARE commands set debug level
 809 //
 810 //-----------------------------------------------------------------------------
 811 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 812         MF_DBGLEVEL = arg0;
 813         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 814 }
 815
 816 //-----------------------------------------------------------------------------
 817 // Work with emulator memory
 818 //
 819 //-----------------------------------------------------------------------------
 820 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 821         emlClearMem();
 822 }
 823
 824 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 825         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 826 }
 827
 828 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 829         byte_t buf[USB_CMD_DATA_SIZE];
 830         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 831
 832         LED_B_ON();
 833         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 834         LED_B_OFF();
 835 }
 836
 837 //-----------------------------------------------------------------------------
 838 // Load a card into the emulator memory
 839 //
 840 //-----------------------------------------------------------------------------
 841 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 842         uint8_t numSectors = arg0;
 843         uint8_t keyType = arg1;
 844         uint64_t ui64Key = 0;
 845         uint32_t cuid;
 846         struct Crypto1State mpcs = {0, 0};
 847         struct Crypto1State *pcs;
 848         pcs = &mpcs;
 849
 850         // variables
 851         byte_t dataoutbuf[16];
 852         byte_t dataoutbuf2[16];
 853         uint8_t uid[10];
 854
 855         // clear trace
 856         iso14a_clear_trace();
 857         iso14a_set_tracing(false);
 858
 859         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 860
 861         LED_A_ON();
 862         LED_B_OFF();
 863         LED_C_OFF();
 864
 865         bool isOK = true;
 866
 867         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 868                 isOK = false;
 869                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 870         }
 871
 872         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 873                 ui64Key = emlGetKey(sectorNo, keyType);
 874                 if (sectorNo == 0){
 875                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 876                                 isOK = false;
 877                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 878                                 break;
 879                         }
 880                 } else {
 881                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 882                                 isOK = false;
 883                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 884                                 break;
 885                         }
 886                 }
 887
 888                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 889                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 890                                 isOK = false;
 891                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 892                                 break;
 893                         };
 894                         if (isOK) {
 895                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 896                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 897                                 } else {        // sector trailer, keep the keys, set only the AC
 898                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 899                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 900                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 901                                 }
 902                         }
 903                 }
 904
 905         }
 906
 907         if(mifare_classic_halt(pcs, cuid)) {
 908                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 909         };
 910
 911         //  ----------------------------- crypto1 destroy
 912         crypto1_destroy(pcs);
 913
 914         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 915         LEDsoff();
 916
 917         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
 918
 919 }
 920
 921
 922 //-----------------------------------------------------------------------------
 923 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
 924 //
 925 //-----------------------------------------------------------------------------
 926 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 927
 928   // params
 929         uint8_t needWipe = arg0;
 930         // bit 0 - need get UID
 931         // bit 1 - need wupC
 932         // bit 2 - need HALT after sequence
 933         // bit 3 - need init FPGA and field before sequence
 934         // bit 4 - need reset FPGA and LED
 935         uint8_t workFlags = arg1;
 936         uint8_t blockNo = arg2;
 937
 938         // card commands
 939         uint8_t wupC1[]       = { 0x40 };
 940         uint8_t wupC2[]       = { 0x43 };
 941         uint8_t wipeC[]       = { 0x41 };
 942
 943         // variables
 944         byte_t isOK = 0;
 945         uint8_t uid[10];
 946         uint8_t d_block[18];
 947         uint32_t cuid;
 948
 949         memset(uid, 0x00, 10);
 950         uint8_t* receivedAnswer = mifare_get_bigbufptr();
 951
 952         if (workFlags & 0x08) {
 953                 // clear trace
 954                 iso14a_clear_trace();
 955                 iso14a_set_tracing(TRUE);
 956
 957                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 958
 959                 LED_A_ON();
 960                 LED_B_OFF();
 961                 LED_C_OFF();
 962
 963                 SpinDelay(300);
 964                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 965                 SpinDelay(100);
 966                 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
 967         }
 968
 969         while (true) {
 970                 // get UID from chip
 971                 if (workFlags & 0x01) {
 972                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 973                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 974                                 break;
 975                         };
 976
 977                         if(mifare_classic_halt(NULL, cuid)) {
 978                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 979                                 break;
 980                         };
 981                 };
 982
 983                 // reset chip
 984                 if (needWipe){
 985       ReaderTransmitBitsPar(wupC1,7,0, NULL);
 986                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
 987                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
 988                                 break;
 989                         };
 990
 991                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
 992                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
 993                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
 994                                 break;
 995                         };
 996
 997                         if(mifare_classic_halt(NULL, cuid)) {
 998                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 999                                 break;
1000                         };
1001                 };
1002
1003                 // write block
1004                 if (workFlags & 0x02) {
1005       ReaderTransmitBitsPar(wupC1,7,0, NULL);
1006                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1007                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1008                                 break;
1009                         };
1010
1011                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1012                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1013                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1014                                 break;
1015                         };
1016                 }
1017
1018                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1019                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1020                         break;
1021                 };
1022
1023                 memcpy(d_block, datain, 16);
1024                 AppendCrc14443a(d_block, 16);
1025
1026                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1027                 if ((ReaderReceive(receivedAnswer) != 1) || (receivedAnswer[0] != 0x0a)) {
1028                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1029                         break;
1030                 };
1031
1032                 if (workFlags & 0x04) {
1033                         if (mifare_classic_halt(NULL, cuid)) {
1034                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1035                                 break;
1036                         };
1037                 }
1038
1039                 isOK = 1;
1040                 break;
1041         }
1042
1043         LED_B_ON();
1044         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1045         LED_B_OFF();
1046
1047         if ((workFlags & 0x10) || (!isOK)) {
1048                 // Thats it...
1049                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1050                 LEDsoff();
1051         }
1052 }
1053
1054
1055 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1056
1057   // params
1058         // bit 1 - need wupC
1059         // bit 2 - need HALT after sequence
1060         // bit 3 - need init FPGA and field before sequence
1061         // bit 4 - need reset FPGA and LED
1062         uint8_t workFlags = arg0;
1063         uint8_t blockNo = arg2;
1064
1065         // card commands
1066         uint8_t wupC1[]       = { 0x40 };
1067         uint8_t wupC2[]       = { 0x43 };
1068
1069         // variables
1070         byte_t isOK = 0;
1071         uint8_t data[18];
1072         uint32_t cuid = 0;
1073
1074         memset(data, 0x00, 18);
1075         uint8_t* receivedAnswer = mifare_get_bigbufptr();
1076
1077         if (workFlags & 0x08) {
1078                 // clear trace
1079                 iso14a_clear_trace();
1080                 iso14a_set_tracing(TRUE);
1081
1082                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1083
1084                 LED_A_ON();
1085                 LED_B_OFF();
1086                 LED_C_OFF();
1087
1088                 SpinDelay(300);
1089                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1090                 SpinDelay(100);
1091                 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
1092         }
1093
1094         while (true) {
1095                 if (workFlags & 0x02) {
1096                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1097                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1098                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1099                                 break;
1100                         };
1101
1102                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1103                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1104                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1105                                 break;
1106                         };
1107                 }
1108
1109                 // read block
1110                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, NULL) != 18)) {
1111                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1112                         break;
1113                 };
1114                 memcpy(data, receivedAnswer, 18);
1115
1116                 if (workFlags & 0x04) {
1117                         if (mifare_classic_halt(NULL, cuid)) {
1118                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1119                                 break;
1120                         };
1121                 }
1122
1123                 isOK = 1;
1124                 break;
1125         }
1126
1127         LED_B_ON();
1128         cmd_send(CMD_ACK,isOK,0,0,data,18);
1129         LED_B_OFF();
1130
1131         if ((workFlags & 0x10) || (!isOK)) {
1132                 // Thats it...
1133                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1134                 LEDsoff();
1135         }
1136 }
1137