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, uint8_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, ks1;
 536         uint8_t par[1];
 537         uint32_t target_nt[2], target_ks[2];
 538
 539         uint8_t par_array[4];
 540         uint16_t ncount = 0;
 541         struct Crypto1State mpcs = {0, 0};
 542         struct Crypto1State *pcs;
 543         pcs = &mpcs;
 544         uint8_t* receivedAnswer =  get_bigbufptr_recvrespbuf();
 545
 546         uint32_t auth1_time, auth2_time;
 547         static uint16_t delta_time;
 548
 549         // clear trace
 550         iso14a_clear_trace();
 551         iso14a_set_tracing(false);
 552
 553         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 554
 555         LED_A_ON();
 556         LED_C_OFF();
 557
 558
 559         // statistics on nonce distance
 560         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 561                 LED_B_ON();
 562                 WDT_HIT();
 563
 564                 davg = dmax = 0;
 565                 dmin = 2000;
 566                 delta_time = 0;
 567
 568                 for (rtr = 0; rtr < 17; rtr++) {
 569
 570                         // prepare next select. No need to power down the card.
 571                         if(mifare_classic_halt(pcs, cuid)) {
 572                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 573                                 rtr--;
 574                                 continue;
 575                         }
 576
 577                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 578                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 579                                 rtr--;
 580                                 continue;
 581                         };
 582
 583                         auth1_time = 0;
 584                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 585                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 586                                 rtr--;
 587                                 continue;
 588                         };
 589
 590                         if (delta_time) {
 591                                 auth2_time = auth1_time + delta_time;
 592                         } else {
 593                                 auth2_time = 0;
 594                         }
 595                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 596                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 597                                 rtr--;
 598                                 continue;
 599                         };
 600
 601                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 602                         for (i = 141; i < 1200; i++) {
 603                                 nttmp = prng_successor(nttmp, 1);
 604                                 if (nttmp == nt2) {break;}
 605                         }
 606
 607                         if (i != 1200) {
 608                                 if (rtr != 0) {
 609                                         davg += i;
 610                                         dmin = MIN(dmin, i);
 611                                         dmax = MAX(dmax, i);
 612                                 }
 613                                 else {
 614                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 615                                 }
 616                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 617                         }
 618                 }
 619
 620                 if (rtr <= 1) return;
 621
 622                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 623
 624                 if (MF_DBGLEVEL >= 3) Dbprintf("min=%d max=%d avg=%d, delta_time=%d", dmin, dmax, davg, delta_time);
 625
 626                 dmin = davg - 2;
 627                 dmax = davg + 2;
 628
 629                 LED_B_OFF();
 630
 631         }
 632 //  -------------------------------------------------------------------------------------------------
 633
 634         LED_C_ON();
 635
 636         //  get crypted nonces for target sector
 637         for(i=0; i < 2; i++) { // look for exactly two different nonces
 638
 639                 WDT_HIT();
 640             if(BUTTON_PRESS()) {
 641                         DbpString("Nested: cancelled");
 642                         crypto1_destroy(pcs);
 643                         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 644                         LEDsoff();
 645                         return;
 646                 }
 647
 648                 target_nt[i] = 0;
 649                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 650
 651                         // prepare next select. No need to power down the card.
 652                         if(mifare_classic_halt(pcs, cuid)) {
 653                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 654                                 continue;
 655                         }
 656
 657                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 658                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 659                                 continue;
 660                         };
 661
 662                         auth1_time = 0;
 663                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 664                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 665                                 continue;
 666                         };
 667
 668                         // nested authentication
 669                         auth2_time = auth1_time + delta_time;
 670                         len = mifare_sendcmd_shortex(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 671                         if (len != 4) {
 672                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 673                                 continue;
 674                         };
 675
 676                         nt2 = bytes_to_num(receivedAnswer, 4);
 677                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 678
 679                         // Parity validity check
 680                         for (j = 0; j < 4; j++) {
 681                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 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         byte_t buf[4 + 4 * 4];
 717         memcpy(buf, &cuid, 4);
 718         memcpy(buf+4, &target_nt[0], 4);
 719         memcpy(buf+8, &target_ks[0], 4);
 720         memcpy(buf+12, &target_nt[1], 4);
 721         memcpy(buf+16, &target_ks[1], 4);
 722
 723         LED_B_ON();
 724         cmd_send(CMD_ACK, 0, 2, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 725         LED_B_OFF();
 726
 727         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 728
 729         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 730         LEDsoff();
 731         iso14a_set_tracing(TRUE);
 732 }
 733
 734 //-----------------------------------------------------------------------------
 735 // MIFARE check keys. key count up to 85.
 736 //
 737 //-----------------------------------------------------------------------------
 738 void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 739 {
 740   // params
 741         uint8_t blockNo = arg0;
 742         uint8_t keyType = arg1;
 743         uint8_t keyCount = arg2;
 744         uint64_t ui64Key = 0;
 745
 746         // variables
 747         int i;
 748         byte_t isOK = 0;
 749         uint8_t uid[10];
 750         uint32_t cuid;
 751         struct Crypto1State mpcs = {0, 0};
 752         struct Crypto1State *pcs;
 753         pcs = &mpcs;
 754
 755         // clear debug level
 756         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 757         MF_DBGLEVEL = MF_DBG_NONE;
 758
 759         // clear trace
 760         iso14a_clear_trace();
 761         iso14a_set_tracing(TRUE);
 762
 763         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 764
 765         LED_A_ON();
 766         LED_B_OFF();
 767         LED_C_OFF();
 768
 769         for (i = 0; i < keyCount; i++) {
 770                 if(mifare_classic_halt(pcs, cuid)) {
 771                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 772                 }
 773
 774                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 775                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 776                         break;
 777                 };
 778
 779                 ui64Key = bytes_to_num(datain + i * 6, 6);
 780                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 781                         continue;
 782                 };
 783
 784                 isOK = 1;
 785                 break;
 786         }
 787
 788         //  ----------------------------- crypto1 destroy
 789         crypto1_destroy(pcs);
 790
 791         LED_B_ON();
 792     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 793         LED_B_OFF();
 794
 795   // Thats it...
 796         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 797         LEDsoff();
 798
 799         // restore debug level
 800         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 801 }
 802
 803 //-----------------------------------------------------------------------------
 804 // MIFARE commands set debug level
 805 //
 806 //-----------------------------------------------------------------------------
 807 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 808         MF_DBGLEVEL = arg0;
 809         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 810 }
 811
 812 //-----------------------------------------------------------------------------
 813 // Work with emulator memory
 814 //
 815 //-----------------------------------------------------------------------------
 816 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 817         emlClearMem();
 818 }
 819
 820 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 821         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 822 }
 823
 824 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 825         byte_t buf[USB_CMD_DATA_SIZE];
 826         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 827
 828         LED_B_ON();
 829         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 830         LED_B_OFF();
 831 }
 832
 833 //-----------------------------------------------------------------------------
 834 // Load a card into the emulator memory
 835 //
 836 //-----------------------------------------------------------------------------
 837 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 838         uint8_t numSectors = arg0;
 839         uint8_t keyType = arg1;
 840         uint64_t ui64Key = 0;
 841         uint32_t cuid;
 842         struct Crypto1State mpcs = {0, 0};
 843         struct Crypto1State *pcs;
 844         pcs = &mpcs;
 845
 846         // variables
 847         byte_t dataoutbuf[16];
 848         byte_t dataoutbuf2[16];
 849         uint8_t uid[10];
 850
 851         // clear trace
 852         iso14a_clear_trace();
 853         iso14a_set_tracing(false);
 854
 855         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 856
 857         LED_A_ON();
 858         LED_B_OFF();
 859         LED_C_OFF();
 860
 861         bool isOK = true;
 862
 863         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 864                 isOK = false;
 865                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 866         }
 867
 868         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 869                 ui64Key = emlGetKey(sectorNo, keyType);
 870                 if (sectorNo == 0){
 871                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 872                                 isOK = false;
 873                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 874                                 break;
 875                         }
 876                 } else {
 877                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 878                                 isOK = false;
 879                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 880                                 break;
 881                         }
 882                 }
 883
 884                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 885                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 886                                 isOK = false;
 887                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 888                                 break;
 889                         };
 890                         if (isOK) {
 891                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 892                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 893                                 } else {        // sector trailer, keep the keys, set only the AC
 894                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 895                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 896                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 897                                 }
 898                         }
 899                 }
 900
 901         }
 902
 903         if(mifare_classic_halt(pcs, cuid)) {
 904                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 905         };
 906
 907         //  ----------------------------- crypto1 destroy
 908         crypto1_destroy(pcs);
 909
 910         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 911         LEDsoff();
 912
 913         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
 914
 915 }
 916
 917
 918 //-----------------------------------------------------------------------------
 919 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
 920 //
 921 //-----------------------------------------------------------------------------
 922 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 923
 924   // params
 925         uint8_t needWipe = arg0;
 926         // bit 0 - need get UID
 927         // bit 1 - need wupC
 928         // bit 2 - need HALT after sequence
 929         // bit 3 - need init FPGA and field before sequence
 930         // bit 4 - need reset FPGA and LED
 931         uint8_t workFlags = arg1;
 932         uint8_t blockNo = arg2;
 933
 934         // card commands
 935         uint8_t wupC1[]       = { 0x40 };
 936         uint8_t wupC2[]       = { 0x43 };
 937         uint8_t wipeC[]       = { 0x41 };
 938
 939         // variables
 940         byte_t isOK = 0;
 941         uint8_t uid[10];
 942         uint8_t d_block[18];
 943         uint32_t cuid;
 944
 945         memset(uid, 0x00, 10);
 946         uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
 947         uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
 948
 949         if (workFlags & 0x08) {
 950                 // clear trace
 951                 iso14a_clear_trace();
 952                 iso14a_set_tracing(TRUE);
 953
 954                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 955
 956                 LED_A_ON();
 957                 LED_B_OFF();
 958                 LED_C_OFF();
 959
 960                 SpinDelay(300);
 961                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 962                 SpinDelay(100);
 963                 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
 964         }
 965
 966         while (true) {
 967                 // get UID from chip
 968                 if (workFlags & 0x01) {
 969                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 970                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 971                                 break;
 972                         };
 973
 974                         if(mifare_classic_halt(NULL, cuid)) {
 975                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 976                                 break;
 977                         };
 978                 };
 979
 980                 // reset chip
 981                 if (needWipe){
 982                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
 983                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
 984                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
 985                                 break;
 986                         };
 987
 988                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
 989                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
 990                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
 991                                 break;
 992                         };
 993
 994                         if(mifare_classic_halt(NULL, cuid)) {
 995                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 996                                 break;
 997                         };
 998                 };
 999
1000                 // write block
1001                 if (workFlags & 0x02) {
1002                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1003                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1004                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1005                                 break;
1006                         };
1007
1008                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1009                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1010                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1011                                 break;
1012                         };
1013                 }
1014
1015                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1016                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1017                         break;
1018                 };
1019
1020                 memcpy(d_block, datain, 16);
1021                 AppendCrc14443a(d_block, 16);
1022
1023                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1024                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1025                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1026                         break;
1027                 };
1028
1029                 if (workFlags & 0x04) {
1030                         if (mifare_classic_halt(NULL, cuid)) {
1031                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1032                                 break;
1033                         };
1034                 }
1035
1036                 isOK = 1;
1037                 break;
1038         }
1039
1040         LED_B_ON();
1041         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1042         LED_B_OFF();
1043
1044         if ((workFlags & 0x10) || (!isOK)) {
1045                 // Thats it...
1046                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1047                 LEDsoff();
1048         }
1049 }
1050
1051
1052 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1053
1054   // params
1055         // bit 1 - need wupC
1056         // bit 2 - need HALT after sequence
1057         // bit 3 - need init FPGA and field before sequence
1058         // bit 4 - need reset FPGA and LED
1059         uint8_t workFlags = arg0;
1060         uint8_t blockNo = arg2;
1061
1062         // card commands
1063         uint8_t wupC1[]       = { 0x40 };
1064         uint8_t wupC2[]       = { 0x43 };
1065
1066         // variables
1067         byte_t isOK = 0;
1068         uint8_t data[18];
1069         uint32_t cuid = 0;
1070
1071         memset(data, 0x00, 18);
1072         uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
1073         uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
1074
1075         if (workFlags & 0x08) {
1076                 // clear trace
1077                 iso14a_clear_trace();
1078                 iso14a_set_tracing(TRUE);
1079
1080                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1081
1082                 LED_A_ON();
1083                 LED_B_OFF();
1084                 LED_C_OFF();
1085
1086                 SpinDelay(300);
1087                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1088                 SpinDelay(100);
1089                 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
1090         }
1091
1092         while (true) {
1093                 if (workFlags & 0x02) {
1094                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1095                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1096                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1097                                 break;
1098                         };
1099
1100                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1101                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1102                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1103                                 break;
1104                         };
1105                 }
1106
1107                 // read block
1108                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1109                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1110                         break;
1111                 };
1112                 memcpy(data, receivedAnswer, 18);
1113
1114                 if (workFlags & 0x04) {
1115                         if (mifare_classic_halt(NULL, cuid)) {
1116                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1117                                 break;
1118                         };
1119                 }
1120
1121                 isOK = 1;
1122                 break;
1123         }
1124
1125         LED_B_ON();
1126         cmd_send(CMD_ACK,isOK,0,0,data,18);
1127         LED_B_OFF();
1128
1129         if ((workFlags & 0x10) || (!isOK)) {
1130                 // Thats it...
1131                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1132                 LEDsoff();
1133         }
1134 }
1135