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(FPGA_HF_ISO14443A_READER_LISTEN);
  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(FPGA_HF_ISO14443A_READER_LISTEN);
 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(FPGA_HF_ISO14443A_READER_LISTEN);
 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(FPGA_HF_ISO14443A_READER_LISTEN);
 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(FPGA_HF_ISO14443A_READER_LISTEN);
 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(FPGA_HF_ISO14443A_READER_LISTEN);
 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(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         // 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         // clear trace
 558         iso14a_clear_trace();
 559         iso14a_set_tracing(false);
 560
 561         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 562
 563         LED_A_ON();
 564         LED_C_OFF();
 565
 566
 567         // statistics on nonce distance
 568         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 569                 LED_B_ON();
 570
 571                 davg = dmax = 0;
 572                 dmin = 2000;
 573                 delta_time = 0;
 574
 575                 for (rtr = 0; rtr < 17; rtr++) {
 576
 577                         // prepare next select. No need to power down the card.
 578                         if(mifare_classic_halt(pcs, cuid)) {
 579                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 580                                 rtr--;
 581                                 continue;
 582                         }
 583
 584                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 585                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 586                                 rtr--;
 587                                 continue;
 588                         };
 589
 590                         auth1_time = 0;
 591                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 592                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 593                                 rtr--;
 594                                 continue;
 595                         };
 596
 597                         if (delta_time) {
 598                                 auth2_time = auth1_time + delta_time;
 599                         } else {
 600                                 auth2_time = 0;
 601                         }
 602                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 603                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 604                                 rtr--;
 605                                 continue;
 606                         };
 607
 608                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 609                         for (i = 101; i < 1200; i++) {
 610                                 nttmp = prng_successor(nttmp, 1);
 611                                 if (nttmp == nt2) break;
 612                         }
 613
 614                         if (i != 1200) {
 615                                 if (rtr != 0) {
 616                                         davg += i;
 617                                         dmin = MIN(dmin, i);
 618                                         dmax = MAX(dmax, i);
 619                                 }
 620                                 else {
 621                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 622                                 }
 623                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 624                         }
 625                 }
 626
 627                 if (rtr <= 1)   return;
 628
 629                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 630
 631                 if (MF_DBGLEVEL >= 3) Dbprintf("min=%d max=%d avg=%d, delta_time=%d", dmin, dmax, davg, delta_time);
 632
 633                 dmin = davg - 2;
 634                 dmax = davg + 2;
 635
 636                 LED_B_OFF();
 637
 638         }
 639 //  -------------------------------------------------------------------------------------------------
 640
 641         LED_C_ON();
 642
 643         //  get crypted nonces for target sector
 644         for(i=0; i < 2; i++) { // look for exactly two different nonces
 645
 646                 target_nt[i] = 0;
 647                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 648
 649                         // prepare next select. No need to power down the card.
 650                         if(mifare_classic_halt(pcs, cuid)) {
 651                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 652                                 continue;
 653                         }
 654
 655                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 656                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 657                                 continue;
 658                         };
 659
 660                         auth1_time = 0;
 661                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 662                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 663                                 continue;
 664                         };
 665
 666                         // nested authentication
 667                         auth2_time = auth1_time + delta_time;
 668                         len = mifare_sendcmd_shortex(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, &par, &auth2_time);
 669                         if (len != 4) {
 670                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 671                                 continue;
 672                         };
 673
 674                         nt2 = bytes_to_num(receivedAnswer, 4);
 675                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par);
 676
 677                         // Parity validity check
 678                         for (j = 0; j < 4; j++) {
 679                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par & 0x08) >> 3));
 680                                 par = par << 1;
 681                         }
 682
 683                         ncount = 0;
 684                         nttest = prng_successor(nt1, dmin - 1);
 685                         for (j = dmin; j < dmax + 1; j++) {
 686                                 nttest = prng_successor(nttest, 1);
 687                                 ks1 = nt2 ^ nttest;
 688
 689                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 690                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 691                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 692                                                 target_nt[i] = 0;
 693                                                 break;
 694                                         }
 695                                         target_nt[i] = nttest;
 696                                         target_ks[i] = ks1;
 697                                         ncount++;
 698                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 699                                                 target_nt[i] = 0;
 700                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 701                                                 break;
 702                                         }
 703                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 704                                 }
 705                         }
 706                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 707                 }
 708         }
 709
 710         LED_C_OFF();
 711
 712         //  ----------------------------- crypto1 destroy
 713         crypto1_destroy(pcs);
 714
 715         // add trace trailer
 716         memset(uid, 0x44, 4);
 717         LogTrace(uid, 4, 0, 0, TRUE);
 718
 719         byte_t buf[4 + 4 * 4];
 720         memcpy(buf, &cuid, 4);
 721         memcpy(buf+4, &target_nt[0], 4);
 722         memcpy(buf+8, &target_ks[0], 4);
 723         memcpy(buf+12, &target_nt[1], 4);
 724         memcpy(buf+16, &target_ks[1], 4);
 725
 726         LED_B_ON();
 727         cmd_send(CMD_ACK, 0, 2, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 728         LED_B_OFF();
 729
 730         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 731
 732         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 733         LEDsoff();
 734         iso14a_set_tracing(TRUE);
 735 }
 736
 737 //-----------------------------------------------------------------------------
 738 // MIFARE check keys. key count up to 85.
 739 //
 740 //-----------------------------------------------------------------------------
 741 void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 742 {
 743   // params
 744         uint8_t blockNo = arg0;
 745         uint8_t keyType = arg1;
 746         uint8_t keyCount = arg2;
 747         uint64_t ui64Key = 0;
 748
 749         // variables
 750         int i;
 751         byte_t isOK = 0;
 752         uint8_t uid[10];
 753         uint32_t cuid;
 754         struct Crypto1State mpcs = {0, 0};
 755         struct Crypto1State *pcs;
 756         pcs = &mpcs;
 757
 758         // clear debug level
 759         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 760         MF_DBGLEVEL = MF_DBG_NONE;
 761
 762         // clear trace
 763         iso14a_clear_trace();
 764         iso14a_set_tracing(TRUE);
 765
 766         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 767
 768         LED_A_ON();
 769         LED_B_OFF();
 770         LED_C_OFF();
 771
 772 //      SpinDelay(300);
 773         for (i = 0; i < keyCount; i++) {
 774 //              FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 775 //              SpinDelay(100);
 776 //              FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
 777                 // prepare next select by sending a HALT. There is no need to power down the card.
 778                 if(mifare_classic_halt(pcs, cuid)) {
 779                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 780                 }
 781
 782                 // SpinDelay(50);
 783
 784                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 785                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 786                         break;
 787                 };
 788
 789                 ui64Key = bytes_to_num(datain + i * 6, 6);
 790                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 791                         continue;
 792                 };
 793
 794                 isOK = 1;
 795                 break;
 796         }
 797
 798         //  ----------------------------- crypto1 destroy
 799         crypto1_destroy(pcs);
 800
 801         // add trace trailer
 802         memset(uid, 0x44, 4);
 803         LogTrace(uid, 4, 0, 0, TRUE);
 804
 805         LED_B_ON();
 806     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 807         LED_B_OFF();
 808
 809   // Thats it...
 810         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 811         LEDsoff();
 812
 813         // restore debug level
 814         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 815 }
 816
 817 //-----------------------------------------------------------------------------
 818 // MIFARE commands set debug level
 819 //
 820 //-----------------------------------------------------------------------------
 821 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 822         MF_DBGLEVEL = arg0;
 823         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 824 }
 825
 826 //-----------------------------------------------------------------------------
 827 // Work with emulator memory
 828 //
 829 //-----------------------------------------------------------------------------
 830 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 831         emlClearMem();
 832 }
 833
 834 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 835         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 836 }
 837
 838 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 839 //      UsbCommand ack = {CMD_ACK, {arg0, arg1, 0}};
 840
 841   byte_t buf[48];
 842         emlGetMem(buf, arg0, arg1); // data, block num, blocks count
 843
 844         LED_B_ON();
 845   cmd_send(CMD_ACK,arg0,arg1,0,buf,48);
 846 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
 847         LED_B_OFF();
 848 }
 849
 850 //-----------------------------------------------------------------------------
 851 // Load a card into the emulator memory
 852 //
 853 //-----------------------------------------------------------------------------
 854 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 855         int i;
 856         uint8_t sectorNo = 0;
 857         uint8_t keyType = arg1;
 858         uint64_t ui64Key = 0;
 859         uint32_t cuid;
 860         struct Crypto1State mpcs = {0, 0};
 861         struct Crypto1State *pcs;
 862         pcs = &mpcs;
 863
 864         // variables
 865         byte_t dataoutbuf[16];
 866         byte_t dataoutbuf2[16];
 867         uint8_t uid[10];
 868
 869         // clear trace
 870         iso14a_clear_trace();
 871         iso14a_set_tracing(false);
 872
 873         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 874
 875         LED_A_ON();
 876         LED_B_OFF();
 877         LED_C_OFF();
 878
 879         while (true) {
 880                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 881                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 882                         break;
 883                 };
 884
 885                 for (i = 0; i < 16; i++) {
 886                         sectorNo = i;
 887                         ui64Key = emlGetKey(sectorNo, keyType);
 888
 889                         if (!i){
 890                                 if(mifare_classic_auth(pcs, cuid, sectorNo * 4, keyType, ui64Key, AUTH_FIRST)) {
 891                                         if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%d]. Auth error", i);
 892                                         break;
 893                                 }
 894                         } else {
 895                                 if(mifare_classic_auth(pcs, cuid, sectorNo * 4, keyType, ui64Key, AUTH_NESTED)) {
 896                                         if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%d]. Auth nested error", i);
 897                                         break;
 898                                 }
 899                         }
 900
 901                         if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 0, dataoutbuf)) {
 902                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 0 error");
 903                                 break;
 904                         };
 905                         emlSetMem(dataoutbuf, sectorNo * 4 + 0, 1);
 906
 907                         if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 1, dataoutbuf)) {
 908                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 1 error");
 909                                 break;
 910                         };
 911                         emlSetMem(dataoutbuf, sectorNo * 4 + 1, 1);
 912
 913                         if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 2, dataoutbuf)) {
 914                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 2 error");
 915                                 break;
 916                         };
 917                         emlSetMem(dataoutbuf, sectorNo * 4 + 2, 1);
 918
 919                         // get block 3 bytes 6-9
 920                         if(mifare_classic_readblock(pcs, cuid, sectorNo * 4 + 3, dataoutbuf)) {
 921                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Read block 3 error");
 922                                 break;
 923                         };
 924                         emlGetMem(dataoutbuf2, sectorNo * 4 + 3, 1);
 925                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 926                         emlSetMem(dataoutbuf2,  sectorNo * 4 + 3, 1);
 927                 }
 928
 929                 if(mifare_classic_halt(pcs, cuid)) {
 930                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 931                         break;
 932                 };
 933
 934                 break;
 935         }
 936
 937         //  ----------------------------- crypto1 destroy
 938         crypto1_destroy(pcs);
 939
 940         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 941         LEDsoff();
 942
 943         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
 944
 945         // add trace trailer
 946         memset(uid, 0x44, 4);
 947         LogTrace(uid, 4, 0, 0, TRUE);
 948 }
 949
 950 //-----------------------------------------------------------------------------
 951 // MIFARE 1k emulator
 952 //
 953 //-----------------------------------------------------------------------------
 954
 955
 956 //-----------------------------------------------------------------------------
 957 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
 958 //
 959 //-----------------------------------------------------------------------------
 960 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 961
 962   // params
 963         uint8_t needWipe = arg0;
 964         // bit 0 - need get UID
 965         // bit 1 - need wupC
 966         // bit 2 - need HALT after sequence
 967         // bit 3 - need init FPGA and field before sequence
 968         // bit 4 - need reset FPGA and LED
 969         uint8_t workFlags = arg1;
 970         uint8_t blockNo = arg2;
 971
 972         // card commands
 973         uint8_t wupC1[]       = { 0x40 };
 974         uint8_t wupC2[]       = { 0x43 };
 975         uint8_t wipeC[]       = { 0x41 };
 976
 977         // variables
 978         byte_t isOK = 0;
 979         uint8_t uid[10];
 980         uint8_t d_block[18];
 981         uint32_t cuid;
 982
 983         memset(uid, 0x00, 10);
 984         uint8_t* receivedAnswer = mifare_get_bigbufptr();
 985
 986         if (workFlags & 0x08) {
 987                 // clear trace
 988                 iso14a_clear_trace();
 989                 iso14a_set_tracing(TRUE);
 990
 991                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 992
 993                 LED_A_ON();
 994                 LED_B_OFF();
 995                 LED_C_OFF();
 996
 997                 SpinDelay(300);
 998                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 999                 SpinDelay(100);
1000                 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
1001         }
1002
1003         while (true) {
1004                 // get UID from chip
1005                 if (workFlags & 0x01) {
1006                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
1007                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1008                                 break;
1009                         };
1010
1011                         if(mifare_classic_halt(NULL, cuid)) {
1012                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1013                                 break;
1014                         };
1015                 };
1016
1017                 // reset chip
1018                 if (needWipe){
1019       ReaderTransmitBitsPar(wupC1,7,0, NULL);
1020                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1021                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1022                                 break;
1023                         };
1024
1025                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1026                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1027                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1028                                 break;
1029                         };
1030
1031                         if(mifare_classic_halt(NULL, cuid)) {
1032                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1033                                 break;
1034                         };
1035                 };
1036
1037                 // write block
1038                 if (workFlags & 0x02) {
1039       ReaderTransmitBitsPar(wupC1,7,0, NULL);
1040                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1041                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1042                                 break;
1043                         };
1044
1045                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1046                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1047                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1048                                 break;
1049                         };
1050                 }
1051
1052                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1053                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1054                         break;
1055                 };
1056
1057                 memcpy(d_block, datain, 16);
1058                 AppendCrc14443a(d_block, 16);
1059
1060                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1061                 if ((ReaderReceive(receivedAnswer) != 1) || (receivedAnswer[0] != 0x0a)) {
1062                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1063                         break;
1064                 };
1065
1066                 if (workFlags & 0x04) {
1067                         if (mifare_classic_halt(NULL, cuid)) {
1068                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1069                                 break;
1070                         };
1071                 }
1072
1073                 isOK = 1;
1074                 break;
1075         }
1076
1077 //      UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
1078 //      if (isOK) memcpy(ack.d.asBytes, uid, 4);
1079
1080         // add trace trailer
1081         /**
1082         *       Removed by Martin, the uid is overwritten with 0x44,
1083         *       which can 't be intended.
1084         *
1085         *       memset(uid, 0x44, 4);
1086         *       LogTrace(uid, 4, 0, 0, TRUE);
1087         **/
1088
1089
1090         LED_B_ON();
1091   cmd_send(CMD_ACK,isOK,0,0,uid,4);
1092 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
1093         LED_B_OFF();
1094
1095         if ((workFlags & 0x10) || (!isOK)) {
1096                 // Thats it...
1097                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1098                 LEDsoff();
1099         }
1100 }
1101
1102 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1103
1104   // params
1105         // bit 1 - need wupC
1106         // bit 2 - need HALT after sequence
1107         // bit 3 - need init FPGA and field before sequence
1108         // bit 4 - need reset FPGA and LED
1109         uint8_t workFlags = arg0;
1110         uint8_t blockNo = arg2;
1111
1112         // card commands
1113         uint8_t wupC1[]       = { 0x40 };
1114         uint8_t wupC2[]       = { 0x43 };
1115
1116         // variables
1117         byte_t isOK = 0;
1118         uint8_t data[18];
1119         uint32_t cuid = 0;
1120
1121         memset(data, 0x00, 18);
1122         uint8_t* receivedAnswer = mifare_get_bigbufptr();
1123
1124         if (workFlags & 0x08) {
1125                 // clear trace
1126                 iso14a_clear_trace();
1127                 iso14a_set_tracing(TRUE);
1128
1129                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1130
1131                 LED_A_ON();
1132                 LED_B_OFF();
1133                 LED_C_OFF();
1134
1135                 SpinDelay(300);
1136                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1137                 SpinDelay(100);
1138                 FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
1139         }
1140
1141         while (true) {
1142                 if (workFlags & 0x02) {
1143                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1144                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1145                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1146                                 break;
1147                         };
1148
1149                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1150                         if(!ReaderReceive(receivedAnswer) || (receivedAnswer[0] != 0x0a)) {
1151                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1152                                 break;
1153                         };
1154                 }
1155
1156                 // read block
1157                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, NULL) != 18)) {
1158                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1159                         break;
1160                 };
1161                 memcpy(data, receivedAnswer, 18);
1162
1163                 if (workFlags & 0x04) {
1164                         if (mifare_classic_halt(NULL, cuid)) {
1165                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1166                                 break;
1167                         };
1168                 }
1169
1170                 isOK = 1;
1171                 break;
1172         }
1173
1174 //      UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
1175 //      if (isOK) memcpy(ack.d.asBytes, data, 18);
1176
1177         // add trace trailer
1178         /*
1179         * Removed by Martin, this piece of overwrites the 'data' variable
1180         * which is sent two lines down, and is obviously not correct.
1181         *
1182         * memset(data, 0x44, 4);
1183         * LogTrace(data, 4, 0, 0, TRUE);
1184         */
1185         LED_B_ON();
1186   cmd_send(CMD_ACK,isOK,0,0,data,18);
1187 //      UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
1188         LED_B_OFF();
1189
1190         if ((workFlags & 0x10) || (!isOK)) {
1191                 // Thats it...
1192                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1193                 LEDsoff();
1194         }
1195 }
1196