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 //
   6 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   7 // at your option, any later version. See the LICENSE.txt file for the text of
   8 // the license.
   9 //-----------------------------------------------------------------------------
  10 // Routines to support ISO 14443 type A.
  11 //-----------------------------------------------------------------------------
  12
  13 #include "mifarecmd.h"
  14 #include "apps.h"
  15
  16 //-----------------------------------------------------------------------------
  17 // Select, Authenticaate, Read an MIFARE tag.
  18 // read block
  19 //-----------------------------------------------------------------------------
  20 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  21 {
  22   // params
  23         uint8_t blockNo = arg0;
  24         uint8_t keyType = arg1;
  25         uint64_t ui64Key = 0;
  26         ui64Key = bytes_to_num(datain, 6);
  27
  28         // variables
  29         byte_t isOK = 0;
  30         byte_t dataoutbuf[16];
  31         uint8_t uid[10];
  32         uint32_t cuid;
  33         struct Crypto1State mpcs = {0, 0};
  34         struct Crypto1State *pcs;
  35         pcs = &mpcs;
  36
  37         // clear trace
  38         iso14a_clear_trace();
  39 //      iso14a_set_tracing(false);
  40
  41         iso14443a_setup();
  42
  43         LED_A_ON();
  44         LED_B_OFF();
  45         LED_C_OFF();
  46
  47         while (true) {
  48                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
  49                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  50                         break;
  51                 };
  52
  53                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  54                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  55                         break;
  56                 };
  57
  58                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  59                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  60                         break;
  61                 };
  62
  63                 if(mifare_classic_halt(pcs, cuid)) {
  64                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  65                         break;
  66                 };
  67
  68                 isOK = 1;
  69                 break;
  70         }
  71
  72         //  ----------------------------- crypto1 destroy
  73         crypto1_destroy(pcs);
  74
  75         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  76
  77         // add trace trailer
  78         memset(uid, 0x44, 4);
  79         LogTrace(uid, 4, 0, 0, TRUE);
  80
  81 //      UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
  82 //      memcpy(ack.d.asBytes, dataoutbuf, 16);
  83
  84         LED_B_ON();
  85   cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  86 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
  87         LED_B_OFF();
  88
  89
  90   // Thats it...
  91         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  92         LEDsoff();
  93 //  iso14a_set_tracing(TRUE);
  94
  95 }
  96
  97 void MifareUReadBlock(uint8_t arg0,uint8_t *datain)
  98 {
  99     // params
 100         uint8_t blockNo = arg0;
 101
 102         // variables
 103         byte_t isOK = 0;
 104         byte_t dataoutbuf[16];
 105         uint8_t uid[10];
 106         uint32_t cuid;
 107
 108         // clear trace
 109         iso14a_clear_trace();
 110         iso14443a_setup();
 111
 112         LED_A_ON();
 113         LED_B_OFF();
 114         LED_C_OFF();
 115
 116         while (true) {
 117                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 118             if (MF_DBGLEVEL >= 1)       Dbprintf("Can't select card");
 119                         break;
 120                 };
 121
 122                 if(mifare_ultra_readblock(cuid, blockNo, dataoutbuf)) {
 123             if (MF_DBGLEVEL >= 1)       Dbprintf("Read block error");
 124                         break;
 125                 };
 126
 127                 if(mifare_ultra_halt(cuid)) {
 128             if (MF_DBGLEVEL >= 1)       Dbprintf("Halt error");
 129                         break;
 130                 };
 131
 132                 isOK = 1;
 133                 break;
 134         }
 135
 136         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
 137
 138         // add trace trailer
 139         memset(uid, 0x44, 4);
 140         LogTrace(uid, 4, 0, 0, TRUE);
 141         LED_B_ON();
 142         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
 143         LED_B_OFF();
 144
 145
 146     // Thats it...
 147         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 148         LEDsoff();
 149 }
 150
 151 //-----------------------------------------------------------------------------
 152 // Select, Authenticaate, Read an MIFARE tag.
 153 // read sector (data = 4 x 16 bytes = 64 bytes)
 154 //-----------------------------------------------------------------------------
 155 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 156 {
 157   // params
 158         uint8_t sectorNo = arg0;
 159         uint8_t keyType = arg1;
 160         uint64_t ui64Key = 0;
 161         ui64Key = bytes_to_num(datain, 6);
 162
 163         // variables
 164         byte_t isOK = 0;
 165         byte_t dataoutbuf[16 * 4];
 166         uint8_t uid[10];
 167         uint32_t cuid;
 168         struct Crypto1State mpcs = {0, 0};
 169         struct Crypto1State *pcs;
 170         pcs = &mpcs;
 171
 172         // clear trace
 173         iso14a_clear_trace();
 174 //      iso14a_set_tracing(false);
 175
 176         iso14443a_setup();
 177
 178         LED_A_ON();
 179         LED_B_OFF();
 180         LED_C_OFF();
 181
 182         while (true) {
 183                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 184                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 185                         break;
 186                 };
 187
 188                 if(mifare_classic_auth(pcs, cuid, sectorNo * 4, keyType, ui64Key, AUTH_FIRST)) {
 189                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 190                         break;
 191                 };
 192
 193                 if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 0, dataoutbuf + 16 * 0)) {
 194                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 0 error");
 195                         break;
 196                 };
 197                 if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 1, dataoutbuf + 16 * 1)) {
 198                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 1 error");
 199                         break;
 200                 };
 201                 if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 2, dataoutbuf + 16 * 2)) {
 202                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 2 error");
 203                         break;
 204                 };
 205                 if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 3, dataoutbuf + 16 * 3)) {
 206                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 3 error");
 207                         break;
 208                 };
 209
 210                 if(mifare_classic_halt(pcs, cuid)) {
 211                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 212                         break;
 213                 };
 214
 215                 isOK = 1;
 216                 break;
 217         }
 218
 219         //  ----------------------------- crypto1 destroy
 220         crypto1_destroy(pcs);
 221
 222         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 223
 224         // add trace trailer
 225         memset(uid, 0x44, 4);
 226         LogTrace(uid, 4, 0, 0, TRUE);
 227
 228 //      UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
 229 //      memcpy(ack.d.asBytes, dataoutbuf, 16 * 2);
 230
 231         LED_B_ON();
 232   cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,32);
 233 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
 234 //      SpinDelay(100);
 235
 236 //      memcpy(ack.d.asBytes, dataoutbuf + 16 * 2, 16 * 2);
 237 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
 238   cmd_send(CMD_ACK,isOK,0,0,dataoutbuf+32, 32);
 239         LED_B_OFF();
 240
 241         // Thats it...
 242         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 243         LEDsoff();
 244 //  iso14a_set_tracing(TRUE);
 245
 246 }
 247
 248 void MifareUReadCard(uint8_t arg0, uint8_t *datain)
 249 {
 250   // params
 251         uint8_t sectorNo = arg0;
 252
 253         // variables
 254         byte_t isOK = 0;
 255         byte_t dataoutbuf[16 * 4];
 256         uint8_t uid[10];
 257         uint32_t cuid;
 258
 259         // clear trace
 260         iso14a_clear_trace();
 261 //      iso14a_set_tracing(false);
 262
 263         iso14443a_setup();
 264
 265         LED_A_ON();
 266         LED_B_OFF();
 267         LED_C_OFF();
 268
 269         while (true) {
 270                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 271                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 272                         break;
 273                 };
 274                 for(int sec=0;sec<16;sec++){
 275                     if(mifare_ultra_readblock(cuid, sectorNo * 4 + sec, dataoutbuf + 4 * sec)) {
 276                     if (MF_DBGLEVEL >= 1)   Dbprintf("Read block %d error",sec);
 277                         break;
 278                     };
 279                 }
 280                 if(mifare_ultra_halt(cuid)) {
 281                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 282                         break;
 283                 };
 284
 285                 isOK = 1;
 286                 break;
 287         }
 288
 289         if (MF_DBGLEVEL >= 2) DbpString("READ CARD FINISHED");
 290
 291         // add trace trailer
 292         memset(uid, 0x44, 4);
 293         LogTrace(uid, 4, 0, 0, TRUE);
 294
 295         LED_B_ON();
 296   cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,64);
 297   //cmd_send(CMD_ACK,isOK,0,0,dataoutbuf+32, 32);
 298         LED_B_OFF();
 299
 300         // Thats it...
 301         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 302         LEDsoff();
 303 //  iso14a_set_tracing(TRUE);
 304
 305 }
 306
 307
 308 //-----------------------------------------------------------------------------
 309 // Select, Authenticaate, Read an MIFARE tag.
 310 // read block
 311 //-----------------------------------------------------------------------------
 312 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 313 {
 314         // params
 315         uint8_t blockNo = arg0;
 316         uint8_t keyType = arg1;
 317         uint64_t ui64Key = 0;
 318         byte_t blockdata[16];
 319
 320         ui64Key = bytes_to_num(datain, 6);
 321         memcpy(blockdata, datain + 10, 16);
 322
 323         // variables
 324         byte_t isOK = 0;
 325         uint8_t uid[10];
 326         uint32_t cuid;
 327         struct Crypto1State mpcs = {0, 0};
 328         struct Crypto1State *pcs;
 329         pcs = &mpcs;
 330
 331         // clear trace
 332         iso14a_clear_trace();
 333 //  iso14a_set_tracing(false);
 334
 335         iso14443a_setup();
 336
 337         LED_A_ON();
 338         LED_B_OFF();
 339         LED_C_OFF();
 340
 341         while (true) {
 342                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 343                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 344                         break;
 345                 };
 346
 347                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 348                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 349                         break;
 350                 };
 351
 352                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 353                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 354                         break;
 355                 };
 356
 357                 if(mifare_classic_halt(pcs, cuid)) {
 358                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 359                         break;
 360                 };
 361
 362                 isOK = 1;
 363                 break;
 364         }
 365
 366         //  ----------------------------- crypto1 destroy
 367         crypto1_destroy(pcs);
 368
 369         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 370
 371         // add trace trailer
 372         memset(uid, 0x44, 4);
 373         LogTrace(uid, 4, 0, 0, TRUE);
 374
 375 //      UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
 376
 377         LED_B_ON();
 378         cmd_send(CMD_ACK,isOK,0,0,0,0);
 379 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
 380         LED_B_OFF();
 381
 382
 383         // Thats it...
 384         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 385         LEDsoff();
 386 //  iso14a_set_tracing(TRUE);
 387
 388 }
 389
 390 void MifareUWriteBlock(uint8_t arg0, uint8_t *datain)
 391 {
 392         // params
 393         uint8_t blockNo = arg0;
 394         byte_t blockdata[16];
 395
 396         memset(blockdata,'\0',16);
 397         memcpy(blockdata, datain,16);
 398
 399         // variables
 400         byte_t isOK = 0;
 401         uint8_t uid[10];
 402         uint32_t cuid;
 403
 404         // clear trace
 405         iso14a_clear_trace();
 406         //  iso14a_set_tracing(false);
 407
 408         iso14443a_setup();
 409
 410         LED_A_ON();
 411         LED_B_OFF();
 412         LED_C_OFF();
 413
 414         while (true) {
 415                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 416                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 417                         break;
 418                 };
 419
 420                 if(mifare_ultra_writeblock(cuid, blockNo, blockdata)) {
 421                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 422                         break;
 423                 };
 424
 425                 if(mifare_ultra_halt(cuid)) {
 426                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 427                         break;
 428                 };
 429
 430                 isOK = 1;
 431                 break;
 432         }
 433
 434         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 435
 436         // add trace trailer
 437         memset(uid, 0x44, 4);
 438         LogTrace(uid, 4, 0, 0, TRUE);
 439
 440         LED_B_ON();
 441         cmd_send(CMD_ACK,isOK,0,0,0,0);
 442 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
 443         LED_B_OFF();
 444
 445
 446         // Thats it...
 447         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 448         LEDsoff();
 449 //  iso14a_set_tracing(TRUE);
 450
 451 }
 452
 453 void MifareUWriteBlock_Special(uint8_t arg0, uint8_t *datain)
 454 {
 455         // params
 456         uint8_t blockNo = arg0;
 457         byte_t blockdata[4];
 458
 459         memcpy(blockdata, datain,4);
 460
 461         // variables
 462         byte_t isOK = 0;
 463         uint8_t uid[10];
 464         uint32_t cuid;
 465
 466         // clear trace
 467         iso14a_clear_trace();
 468         //  iso14a_set_tracing(false);
 469
 470         iso14443a_setup();
 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         // add trace trailer
 499         memset(uid, 0x44, 4);
 500         LogTrace(uid, 4, 0, 0, TRUE);
 501
 502        LED_B_ON();
 503         cmd_send(CMD_ACK,isOK,0,0,0,0);
 504 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
 505         LED_B_OFF();
 506
 507
 508         // Thats it...
 509         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 510         LEDsoff();
 511 //  iso14a_set_tracing(TRUE);
 512
 513 }
 514
 515 // Return 1 if the nonce is invalid else return 0
 516 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, byte_t * parity) {
 517         return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 518         (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 519         (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 520 }
 521
 522
 523
 524 //-----------------------------------------------------------------------------
 525 // MIFARE nested authentication.
 526 //
 527 //-----------------------------------------------------------------------------
 528 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 529 {
 530         // params
 531         uint8_t blockNo = arg0 & 0xff;
 532         uint8_t keyType = (arg0 >> 8) & 0xff;
 533         uint8_t targetBlockNo = arg1 & 0xff;
 534         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 535         uint64_t ui64Key = 0;
 536
 537         ui64Key = bytes_to_num(datain, 6);
 538
 539         // variables
 540         uint16_t rtr, i, j, len;
 541         uint16_t davg;
 542         static uint16_t dmin, dmax;
 543         uint8_t uid[10];
 544         uint32_t cuid, nt1, nt2, nttmp, nttest, par, ks1;
 545         uint32_t target_nt[2], target_ks[2];
 546
 547         uint8_t par_array[4];
 548         uint16_t ncount = 0;
 549         struct Crypto1State mpcs = {0, 0};
 550         struct Crypto1State *pcs;
 551         pcs = &mpcs;
 552         uint8_t* receivedAnswer = mifare_get_bigbufptr();
 553
 554         uint32_t auth1_time, auth2_time;
 555         static uint16_t delta_time;
 556
 557         StartCountMifare();
 558
 559         // clear trace
 560         iso14a_clear_trace();
 561         iso14a_set_tracing(false);
 562
 563         iso14443a_setup();
 564
 565         LED_A_ON();
 566         LED_C_OFF();
 567
 568
 569         while((GetCountMifare() & 0xffff0000) != 0x00010000);           // wait for counter to reset and "warm up"
 570
 571         // statistics on nonce distance
 572         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 573                 LED_B_ON();
 574
 575                 davg = dmax = 0;
 576                 dmin = 2000;
 577                 delta_time = 0;
 578
 579                 for (rtr = 0; rtr < 17; rtr++) {
 580
 581                         // prepare next select. No need to power down the card.
 582                         if(mifare_classic_halt(pcs, cuid)) {
 583                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 584                                 rtr--;
 585                                 continue;
 586                         }
 587
 588                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 589                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 590                                 rtr--;
 591                                 continue;
 592                         };
 593
 594                         auth1_time = 0;
 595                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 596                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 597                                 rtr--;
 598                                 continue;
 599                         };
 600
 601                         if (delta_time) {
 602                                 auth2_time = auth1_time + delta_time;
 603                         } else {
 604                                 auth2_time = 0;
 605                         }
 606                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 607                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 608                                 rtr--;
 609                                 continue;
 610                         };
 611
 612                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 613                         for (i = 101; i < 1200; i++) {
 614                                 nttmp = prng_successor(nttmp, 1);
 615                                 if (nttmp == nt2) break;
 616                         }
 617
 618                         if (i != 1200) {
 619                                 if (rtr != 0) {
 620                                         davg += i;
 621                                         dmin = MIN(dmin, i);
 622                                         dmax = MAX(dmax, i);
 623                                 }
 624                                 else {
 625                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 626                                 }
 627                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 628                         }
 629                 }
 630
 631                 if (rtr <= 1)   return;
 632
 633                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 634
 635                 if (MF_DBGLEVEL >= 3) Dbprintf("min=%d max=%d avg=%d, delta_time=%d", dmin, dmax, davg, delta_time);
 636
 637                 dmin = davg - 2;
 638                 dmax = davg + 2;
 639
 640                 LED_B_OFF();
 641
 642         }
 643 //  -------------------------------------------------------------------------------------------------
 644
 645         LED_C_ON();
 646
 647         //  get crypted nonces for target sector
 648         for(i=0; i < 2; i++) { // look for exactly two different nonces
 649
 650                 target_nt[i] = 0;
 651                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 652
 653                         // prepare next select. No need to power down the card.
 654                         if(mifare_classic_halt(pcs, cuid)) {
 655                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 656                                 continue;
 657                         }
 658
 659                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 660                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 661                                 continue;
 662                         };
 663
 664                         auth1_time = 0;
 665                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 666                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 667                                 continue;
 668                         };
 669
 670                         // nested authentication
 671                         auth2_time = auth1_time + delta_time;
 672                         len = mifare_sendcmd_shortex(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, &par, &auth2_time);
 673                         if (len != 4) {
 674                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 675                                 continue;
 676                         };
 677
 678                         nt2 = bytes_to_num(receivedAnswer, 4);
 679                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par);
 680
 681                         // Parity validity check
 682                         for (j = 0; j < 4; j++) {
 683                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par & 0x08) >> 3));
 684                                 par = par << 1;
 685                         }
 686
 687                         ncount = 0;
 688                         nttest = prng_successor(nt1, dmin - 1);
 689                         for (j = dmin; j < dmax + 1; j++) {
 690                                 nttest = prng_successor(nttest, 1);
 691                                 ks1 = nt2 ^ nttest;
 692
 693                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 694                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 695                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 696                                                 target_nt[i] = 0;
 697                                                 break;
 698                                         }
 699                                         target_nt[i] = nttest;
 700                                         target_ks[i] = ks1;
 701                                         ncount++;
 702                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 703                                                 target_nt[i] = 0;
 704                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 705                                                 break;
 706                                         }
 707                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 708                                 }
 709                         }
 710                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 711                 }
 712         }
 713
 714         LED_C_OFF();
 715
 716         //  ----------------------------- crypto1 destroy
 717         crypto1_destroy(pcs);
 718
 719         // add trace trailer
 720         memset(uid, 0x44, 4);
 721         LogTrace(uid, 4, 0, 0, TRUE);
 722
 723         byte_t buf[4 + 4 * 4];
 724         memcpy(buf, &cuid, 4);
 725         memcpy(buf+4, &target_nt[0], 4);
 726         memcpy(buf+8, &target_ks[0], 4);
 727         memcpy(buf+12, &target_nt[1], 4);
 728         memcpy(buf+16, &target_ks[1], 4);
 729
 730         LED_B_ON();
 731         cmd_send(CMD_ACK, 0, 2, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 732         LED_B_OFF();
 733
 734         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 735
 736         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 737         LEDsoff();
 738         iso14a_set_tracing(TRUE);
 739 }
 740
 741 //-----------------------------------------------------------------------------
 742 // MIFARE check keys. key count up to 85.
 743 //
 744 //-----------------------------------------------------------------------------
 745 void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 746 {
 747   // params
 748         uint8_t blockNo = arg0;
 749         uint8_t keyType = arg1;
 750         uint8_t keyCount = arg2;
 751         uint64_t ui64Key = 0;
 752
 753         // variables
 754         int i;
 755         byte_t isOK = 0;
 756         uint8_t uid[10];
 757         uint32_t cuid;
 758         struct Crypto1State mpcs = {0, 0};
 759         struct Crypto1State *pcs;
 760         pcs = &mpcs;
 761
 762         // clear debug level
 763         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 764         MF_DBGLEVEL = MF_DBG_NONE;
 765
 766         // clear trace
 767         iso14a_clear_trace();
 768         iso14a_set_tracing(TRUE);
 769
 770         iso14443a_setup();
 771
 772         LED_A_ON();
 773         LED_B_OFF();
 774         LED_C_OFF();
 775
 776 //      SpinDelay(300);
 777         for (i = 0; i < keyCount; i++) {
 778 //              FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 779 //              SpinDelay(100);
 780 //              FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
 781                 // prepare next select by sending a HALT. There is no need to power down the card.
 782                 if(mifare_classic_halt(pcs, cuid)) {
 783                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 784                 }
 785
 786                 // SpinDelay(50);
 787
 788                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 789                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 790                         break;
 791                 };
 792
 793                 ui64Key = bytes_to_num(datain + i * 6, 6);
 794                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 795                         continue;
 796                 };
 797
 798                 isOK = 1;
 799                 break;
 800         }
 801
 802         //  ----------------------------- crypto1 destroy
 803         crypto1_destroy(pcs);
 804
 805         // add trace trailer
 806         memset(uid, 0x44, 4);
 807         LogTrace(uid, 4, 0, 0, TRUE);
 808
 809         LED_B_ON();
 810     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 811         LED_B_OFF();
 812
 813   // Thats it...
 814         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 815         LEDsoff();
 816
 817         // restore debug level
 818         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 819 }
 820
 821 //-----------------------------------------------------------------------------
 822 // MIFARE commands set debug level
 823 //
 824 //-----------------------------------------------------------------------------
 825 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 826         MF_DBGLEVEL = arg0;
 827         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 828 }
 829
 830 //-----------------------------------------------------------------------------
 831 // Work with emulator memory
 832 //
 833 //-----------------------------------------------------------------------------
 834 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 835         emlClearMem();
 836 }
 837
 838 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 839         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 840 }
 841
 842 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 843 //      UsbCommand ack = {CMD_ACK, {arg0, arg1, 0}};
 844
 845   byte_t buf[48];
 846         emlGetMem(buf, arg0, arg1); // data, block num, blocks count
 847
 848         LED_B_ON();
 849   cmd_send(CMD_ACK,arg0,arg1,0,buf,48);
 850 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
 851         LED_B_OFF();
 852 }
 853
 854 //-----------------------------------------------------------------------------
 855 // Load a card into the emulator memory
 856 //
 857 //-----------------------------------------------------------------------------
 858 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 859         int i;
 860         uint8_t sectorNo = 0;
 861         uint8_t keyType = arg1;
 862         uint64_t ui64Key = 0;
 863         uint32_t cuid;
 864         struct Crypto1State mpcs = {0, 0};
 865         struct Crypto1State *pcs;
 866         pcs = &mpcs;
 867
 868         // variables
 869         byte_t dataoutbuf[16];
 870         byte_t dataoutbuf2[16];
 871         uint8_t uid[10];
 872
 873         // clear trace
 874         iso14a_clear_trace();
 875         iso14a_set_tracing(false);
 876
 877         iso14443a_setup();
 878
 879         LED_A_ON();
 880         LED_B_OFF();
 881         LED_C_OFF();
 882
 883         while (true) {
 884                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 885                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 886                         break;
 887                 };
 888
 889                 for (i = 0; i < 16; i++) {
 890                         sectorNo = i;
 891                         ui64Key = emlGetKey(sectorNo, keyType);
 892
 893                         if (!i){
 894                                 if(mifare_classic_auth(pcs, cuid, sectorNo * 4, keyType, ui64Key, AUTH_FIRST)) {
 895                                         if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%d]. Auth error", i);
 896                                         break;
 897                                 }
 898                         } else {
 899                                 if(mifare_classic_auth(pcs, cuid, sectorNo * 4, keyType, ui64Key, AUTH_NESTED)) {
 900                                         if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%d]. Auth nested error", i);
 901                                         break;
 902                                 }
 903                         }
 904
 905                         if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 0, dataoutbuf)) {
 906                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 0 error");
 907                                 break;
 908                         };
 909                         emlSetMem(dataoutbuf, sectorNo * 4 + 0, 1);
 910
 911                         if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 1, dataoutbuf)) {
 912                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 1 error");
 913                                 break;
 914                         };
 915                         emlSetMem(dataoutbuf, sectorNo * 4 + 1, 1);
 916
 917                         if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 2, dataoutbuf)) {
 918                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 2 error");
 919                                 break;
 920                         };
 921                         emlSetMem(dataoutbuf, sectorNo * 4 + 2, 1);
 922
 923                         // get block 3 bytes 6-9
 924                         if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 3, dataoutbuf)) {
 925                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 3 error");
 926                                 break;
 927                         };
 928                         emlGetMem(dataoutbuf2, sectorNo * 4 + 3, 1);
 929                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 930                         emlSetMem(dataoutbuf2,  sectorNo * 4 + 3, 1);
 931                 }
 932
 933                 if(mifare_classic_halt(pcs, cuid)) {
 934                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 935                         break;
 936                 };
 937
 938                 break;
 939         }
 940
 941         //  ----------------------------- crypto1 destroy
 942         crypto1_destroy(pcs);
 943
 944         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 945         LEDsoff();
 946
 947         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
 948
 949         // add trace trailer
 950         memset(uid, 0x44, 4);
 951         LogTrace(uid, 4, 0, 0, TRUE);
 952 }
 953
 954 //-----------------------------------------------------------------------------
 955 // MIFARE 1k emulator
 956 //
 957 //-----------------------------------------------------------------------------
 958
 959
 960 //-----------------------------------------------------------------------------
 961 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
 962 //
 963 //-----------------------------------------------------------------------------
 964 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 965
 966   // params
 967         uint8_t needWipe = arg0;
 968         // bit 0 - need get UID
 969         // bit 1 - need wupC
 970         // bit 2 - need HALT after sequence
 971         // bit 3 - need init FPGA and field before sequence
 972         // bit 4 - need reset FPGA and LED
 973         uint8_t workFlags = arg1;
 974         uint8_t blockNo = arg2;
 975
 976         // card commands
 977         uint8_t wupC1[]       = { 0x40 };
 978         uint8_t wupC2[]       = { 0x43 };
 979         uint8_t wipeC[]       = { 0x41 };
 980
 981         // variables
 982         byte_t isOK = 0;
 983         uint8_t uid[10];
 984         uint8_t d_block[18];
 985         uint32_t cuid;
 986
 987         memset(uid, 0x00, 10);
 988         uint8_t* receivedAnswer = mifare_get_bigbufptr();
 989
 990         if (workFlags & 0x08) {
 991                 // clear trace
 992                 iso14a_clear_trace();
 993                 iso14a_set_tracing(TRUE);
 994
 995                 iso14443a_setup();
 996
 997                 LED_A_ON();
 998                 LED_B_OFF();
 999                 LED_C_OFF();
1000
1001                 SpinDelay(300);
1002                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1003                 SpinDelay(100);
1004                 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
1005         }
1006
1007         while (true) {
1008                 // get UID from chip
1009                 if (workFlags & 0x01) {
1010                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
1011                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1012                                 break;
1013                         };
1014
1015                         if(mifare_classic_halt(NULL, cuid)) {
1016                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1017                                 break;
1018                         };
1019                 };
1020
1021                 // reset chip
1022                 if (needWipe){
1023       ReaderTransmitBitsPar(wupC1,7,0, NULL);
1024                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1025                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1026                                 break;
1027                         };
1028
1029                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1030                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1031                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1032                                 break;
1033                         };
1034
1035                         if(mifare_classic_halt(NULL, cuid)) {
1036                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1037                                 break;
1038                         };
1039                 };
1040
1041                 // write block
1042                 if (workFlags & 0x02) {
1043       ReaderTransmitBitsPar(wupC1,7,0, NULL);
1044                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1045                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1046                                 break;
1047                         };
1048
1049                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1050                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1051                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1052                                 break;
1053                         };
1054                 }
1055
1056                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1057                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1058                         break;
1059                 };
1060
1061                 memcpy(d_block, datain, 16);
1062                 AppendCrc14443a(d_block, 16);
1063
1064                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1065                 if ((ReaderReceive(receivedAnswer) != 1) || (receivedAnswer[0] != 0x0a)) {
1066                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1067                         break;
1068                 };
1069
1070                 if (workFlags & 0x04) {
1071                         if (mifare_classic_halt(NULL, cuid)) {
1072                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1073                                 break;
1074                         };
1075                 }
1076
1077                 isOK = 1;
1078                 break;
1079         }
1080
1081 //      UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
1082 //      if (isOK) memcpy(ack.d.asBytes, uid, 4);
1083
1084         // add trace trailer
1085         /**
1086         *       Removed by Martin, the uid is overwritten with 0x44,
1087         *       which can 't be intended.
1088         *
1089         *       memset(uid, 0x44, 4);
1090         *       LogTrace(uid, 4, 0, 0, TRUE);
1091         **/
1092
1093
1094         LED_B_ON();
1095   cmd_send(CMD_ACK,isOK,0,0,uid,4);
1096 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
1097         LED_B_OFF();
1098
1099         if ((workFlags & 0x10) || (!isOK)) {
1100                 // Thats it...
1101                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1102                 LEDsoff();
1103         }
1104 }
1105
1106 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1107
1108   // params
1109         // bit 1 - need wupC
1110         // bit 2 - need HALT after sequence
1111         // bit 3 - need init FPGA and field before sequence
1112         // bit 4 - need reset FPGA and LED
1113         uint8_t workFlags = arg0;
1114         uint8_t blockNo = arg2;
1115
1116         // card commands
1117         uint8_t wupC1[]       = { 0x40 };
1118         uint8_t wupC2[]       = { 0x43 };
1119
1120         // variables
1121         byte_t isOK = 0;
1122         uint8_t data[18];
1123         uint32_t cuid = 0;
1124
1125         memset(data, 0x00, 18);
1126         uint8_t* receivedAnswer = mifare_get_bigbufptr();
1127
1128         if (workFlags & 0x08) {
1129                 // clear trace
1130                 iso14a_clear_trace();
1131                 iso14a_set_tracing(TRUE);
1132
1133                 iso14443a_setup();
1134
1135                 LED_A_ON();
1136                 LED_B_OFF();
1137                 LED_C_OFF();
1138
1139                 SpinDelay(300);
1140                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1141                 SpinDelay(100);
1142                 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
1143         }
1144
1145         while (true) {
1146                 if (workFlags & 0x02) {
1147       ReaderTransmitBitsPar(wupC1,7,0, NULL);
1148                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1149                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1150                                 break;
1151                         };
1152
1153                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1154                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1155                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1156                                 break;
1157                         };
1158                 }
1159
1160                 // read block
1161                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, NULL) != 18)) {
1162                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1163                         break;
1164                 };
1165                 memcpy(data, receivedAnswer, 18);
1166
1167                 if (workFlags & 0x04) {
1168                         if (mifare_classic_halt(NULL, cuid)) {
1169                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1170                                 break;
1171                         };
1172                 }
1173
1174                 isOK = 1;
1175                 break;
1176         }
1177
1178 //      UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
1179 //      if (isOK) memcpy(ack.d.asBytes, data, 18);
1180
1181         // add trace trailer
1182         /*
1183         * Removed by Martin, this piece of overwrites the 'data' variable
1184         * which is sent two lines down, and is obviously not correct.
1185         *
1186         * memset(data, 0x44, 4);
1187         * LogTrace(data, 4, 0, 0, TRUE);
1188         */
1189         LED_B_ON();
1190   cmd_send(CMD_ACK,isOK,0,0,data,18);
1191 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
1192         LED_B_OFF();
1193
1194         if ((workFlags & 0x10) || (!isOK)) {
1195                 // Thats it...
1196                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1197                 LEDsoff();
1198         }
1199 }
1200