git.zerfleddert.de Git - proxmark3-svn/blob - armsrc/mifarecmd.c

   1 //-----------------------------------------------------------------------------
   2 // Merlok - June 2011, 2012
   3 // Gerhard de Koning Gans - May 2008
   4 // Hagen Fritsch - June 2010
   5 // Midnitesnake - Dec 2013
   6 // Andy Davies  - Apr 2014
   7 // Iceman - May 2014
   8 //
   9 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
  10 // at your option, any later version. See the LICENSE.txt file for the text of
  11 // the license.
  12 //-----------------------------------------------------------------------------
  13 // Routines to support ISO 14443 type A.
  14 //-----------------------------------------------------------------------------
  15
  16 #include "mifarecmd.h"
  17 #include "apps.h"
  18 #include "util.h"
  19
  20 #include "crc.h"
  21
  22 //-----------------------------------------------------------------------------
  23 // Select, Authenticate, Read a MIFARE tag.
  24 // read block
  25 //-----------------------------------------------------------------------------
  26 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  27 {
  28   // params
  29         uint8_t blockNo = arg0;
  30         uint8_t keyType = arg1;
  31         uint64_t ui64Key = 0;
  32         ui64Key = bytes_to_num(datain, 6);
  33
  34         // variables
  35         byte_t isOK = 0;
  36         byte_t dataoutbuf[16];
  37         uint8_t uid[10];
  38         uint32_t cuid;
  39         struct Crypto1State mpcs = {0, 0};
  40         struct Crypto1State *pcs;
  41         pcs = &mpcs;
  42
  43         // clear trace
  44         clear_trace();
  45         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  46
  47         LED_A_ON();
  48         LED_B_OFF();
  49         LED_C_OFF();
  50
  51         while (true) {
  52                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
  53                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  54                         break;
  55                 };
  56
  57                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  58                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  59                         break;
  60                 };
  61
  62                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  63                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  64                         break;
  65                 };
  66
  67                 if(mifare_classic_halt(pcs, cuid)) {
  68                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  69                         break;
  70                 };
  71
  72                 isOK = 1;
  73                 break;
  74         }
  75
  76         //  ----------------------------- crypto1 destroy
  77         crypto1_destroy(pcs);
  78
  79         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  80
  81         LED_B_ON();
  82         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  83         LED_B_OFF();
  84
  85         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  86         LEDsoff();
  87 }
  88
  89 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  90
  91         bool turnOffField = (arg0 == 1);
  92
  93         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
  94         clear_trace();
  95         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  96
  97         if(!iso14443a_select_card(NULL, NULL, NULL)) {
  98                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
  99                 OnError(0);
 100                 return;
 101         };
 102
 103         if(!mifare_ultra_auth(keybytes)){
 104                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 105                 OnError(1);
 106                 return;
 107         }
 108
 109         if (turnOffField) {
 110                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 111                 LEDsoff();
 112         }
 113         cmd_send(CMD_ACK,1,0,0,0,0);
 114 }
 115
 116 // Arg0 = BlockNo,
 117 // Arg1 = UsePwd bool
 118 // datain = PWD bytes,
 119 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 120 {
 121         uint8_t blockNo = arg0;
 122         byte_t dataout[16] = {0x00};
 123         bool useKey = (arg1 == 1); //UL_C
 124         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 125
 126         LEDsoff();
 127         LED_A_ON();
 128         clear_trace();
 129         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 130
 131         int len = iso14443a_select_card(NULL, NULL, NULL);
 132         if(!len) {
 133                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 134                 OnError(1);
 135                 return;
 136         }
 137
 138         // UL-C authentication
 139         if ( useKey ) {
 140                 uint8_t key[16] = {0x00};
 141                 memcpy(key, datain, sizeof(key) );
 142
 143                 if ( !mifare_ultra_auth(key) ) {
 144                         OnError(1);
 145                         return;
 146                 }
 147         }
 148
 149         // UL-EV1 / NTAG authentication
 150         if ( usePwd ) {
 151                 uint8_t pwd[4] = {0x00};
 152                 memcpy(pwd, datain, 4);
 153                 uint8_t pack[4] = {0,0,0,0};
 154                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 155                         OnError(1);
 156                         return;
 157                 }
 158         }
 159
 160         if( mifare_ultra_readblock(blockNo, dataout) ) {
 161                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 162                 OnError(2);
 163                 return;
 164         }
 165
 166         if( mifare_ultra_halt() ) {
 167                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 168                 OnError(3);
 169                 return;
 170         }
 171
 172     cmd_send(CMD_ACK,1,0,0,dataout,16);
 173         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 174         LEDsoff();
 175 }
 176
 177 //-----------------------------------------------------------------------------
 178 // Select, Authenticate, Read a MIFARE tag.
 179 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 180 //-----------------------------------------------------------------------------
 181 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 182 {
 183   // params
 184         uint8_t sectorNo = arg0;
 185         uint8_t keyType = arg1;
 186         uint64_t ui64Key = 0;
 187         ui64Key = bytes_to_num(datain, 6);
 188
 189         // variables
 190         byte_t isOK = 0;
 191         byte_t dataoutbuf[16 * 16];
 192         uint8_t uid[10];
 193         uint32_t cuid;
 194         struct Crypto1State mpcs = {0, 0};
 195         struct Crypto1State *pcs;
 196         pcs = &mpcs;
 197
 198         // clear trace
 199         clear_trace();
 200
 201         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 202
 203         LED_A_ON();
 204         LED_B_OFF();
 205         LED_C_OFF();
 206
 207         isOK = 1;
 208         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 209                 isOK = 0;
 210                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 211         }
 212
 213
 214         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 215                 isOK = 0;
 216                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 217         }
 218
 219         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 220                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 221                         isOK = 0;
 222                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 223                         break;
 224                 }
 225         }
 226
 227         if(mifare_classic_halt(pcs, cuid)) {
 228                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 229         }
 230
 231         //  ----------------------------- crypto1 destroy
 232         crypto1_destroy(pcs);
 233
 234         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 235
 236         LED_B_ON();
 237         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 238         LED_B_OFF();
 239
 240         // Thats it...
 241         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 242         LEDsoff();
 243 }
 244
 245 // arg0 = blockNo (start)
 246 // arg1 = Pages (number of blocks)
 247 // arg2 = useKey
 248 // datain = KEY bytes
 249 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 250 {
 251         // free eventually allocated BigBuf memory
 252         BigBuf_free();
 253         clear_trace();
 254
 255         // params
 256         uint8_t blockNo = arg0;
 257         uint16_t blocks = arg1;
 258         bool useKey = (arg2 == 1); //UL_C
 259         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 260         uint32_t countblocks = 0;
 261         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 262         if (dataout == NULL){
 263                 Dbprintf("out of memory");
 264                 OnError(1);
 265                 return;
 266         }
 267
 268         LEDsoff();
 269         LED_A_ON();
 270         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 271
 272         int len = iso14443a_select_card(NULL, NULL, NULL);
 273         if (!len) {
 274                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 275                 OnError(1);
 276                 return;
 277         }
 278
 279         // UL-C authentication
 280         if ( useKey ) {
 281                 uint8_t key[16] = {0x00};
 282                 memcpy(key, datain, sizeof(key) );
 283
 284                 if ( !mifare_ultra_auth(key) ) {
 285                         OnError(1);
 286                         return;
 287                 }
 288         }
 289
 290         // UL-EV1 / NTAG authentication
 291         if (usePwd) {
 292                 uint8_t pwd[4] = {0x00};
 293                 memcpy(pwd, datain, sizeof(pwd));
 294                 uint8_t pack[4] = {0,0,0,0};
 295
 296                 if (!mifare_ul_ev1_auth(pwd, pack)){
 297                         OnError(1);
 298                         return;
 299                 }
 300         }
 301
 302         for (int i = 0; i < blocks; i++){
 303                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 304                         Dbprintf("Data exceeds buffer!!");
 305                         break;
 306                 }
 307
 308                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 309
 310                 if (len) {
 311                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 312                         // if no blocks read - error out
 313                         if (i==0){
 314                                 OnError(2);
 315                         return;
 316                         } else {
 317                                 //stop at last successful read block and return what we got
 318                                 break;
 319                         }
 320                 } else {
 321                         countblocks++;
 322                 }
 323         }
 324
 325         len = mifare_ultra_halt();
 326         if (len) {
 327                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 328                 OnError(3);
 329                 return;
 330         }
 331
 332         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 333
 334         countblocks *= 4;
 335
 336         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 337         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 338         LEDsoff();
 339         BigBuf_free();
 340 }
 341
 342 //-----------------------------------------------------------------------------
 343 // Select, Authenticate, Write a MIFARE tag.
 344 // read block
 345 //-----------------------------------------------------------------------------
 346 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 347 {
 348         // params
 349         uint8_t blockNo = arg0;
 350         uint8_t keyType = arg1;
 351         uint64_t ui64Key = 0;
 352         byte_t blockdata[16];
 353
 354         ui64Key = bytes_to_num(datain, 6);
 355         memcpy(blockdata, datain + 10, 16);
 356
 357         // variables
 358         byte_t isOK = 0;
 359         uint8_t uid[10];
 360         uint32_t cuid;
 361         struct Crypto1State mpcs = {0, 0};
 362         struct Crypto1State *pcs;
 363         pcs = &mpcs;
 364
 365         // clear trace
 366         clear_trace();
 367
 368         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 369
 370         LED_A_ON();
 371         LED_B_OFF();
 372         LED_C_OFF();
 373
 374         while (true) {
 375                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 376                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 377                         break;
 378                 };
 379
 380                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 381                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 382                         break;
 383                 };
 384
 385                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 386                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 387                         break;
 388                 };
 389
 390                 if(mifare_classic_halt(pcs, cuid)) {
 391                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 392                         break;
 393                 };
 394
 395                 isOK = 1;
 396                 break;
 397         }
 398
 399         //  ----------------------------- crypto1 destroy
 400         crypto1_destroy(pcs);
 401
 402         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 403
 404         LED_B_ON();
 405         cmd_send(CMD_ACK,isOK,0,0,0,0);
 406         LED_B_OFF();
 407
 408
 409         // Thats it...
 410         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 411         LEDsoff();
 412 }
 413
 414 /* // Command not needed but left for future testing
 415 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 416 {
 417         uint8_t blockNo = arg0;
 418         byte_t blockdata[16] = {0x00};
 419
 420         memcpy(blockdata, datain, 16);
 421
 422         uint8_t uid[10] = {0x00};
 423
 424         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 425
 426         clear_trace();
 427         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 428
 429         if(!iso14443a_select_card(uid, NULL, NULL)) {
 430                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 431                 OnError(0);
 432                 return;
 433         };
 434
 435         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 436                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 437                 OnError(0);
 438                 return; };
 439
 440         if(mifare_ultra_halt()) {
 441                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 442                 OnError(0);
 443                 return;
 444         };
 445
 446         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 447
 448         cmd_send(CMD_ACK,1,0,0,0,0);
 449         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 450         LEDsoff();
 451 }
 452 */
 453
 454 // Arg0   : Block to write to.
 455 // Arg1   : 0 = use no authentication.
 456 //          1 = use 0x1A authentication.
 457 //          2 = use 0x1B authentication.
 458 // datain : 4 first bytes is data to be written.
 459 //        : 4/16 next bytes is authentication key.
 460 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 461 {
 462         uint8_t blockNo = arg0;
 463         bool useKey = (arg1 == 1); //UL_C
 464         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 465         byte_t blockdata[4] = {0x00};
 466
 467         memcpy(blockdata, datain,4);
 468
 469         LEDsoff();
 470         LED_A_ON();
 471         clear_trace();
 472         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 473
 474         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 475                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 476                 OnError(0);
 477                 return;
 478         };
 479
 480         // UL-C authentication
 481         if ( useKey ) {
 482                 uint8_t key[16] = {0x00};
 483                 memcpy(key, datain+4, sizeof(key) );
 484
 485                 if ( !mifare_ultra_auth(key) ) {
 486                         OnError(1);
 487                         return;
 488                 }
 489         }
 490
 491         // UL-EV1 / NTAG authentication
 492         if (usePwd) {
 493                 uint8_t pwd[4] = {0x00};
 494                 memcpy(pwd, datain+4, 4);
 495                 uint8_t pack[4] = {0,0,0,0};
 496                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 497                         OnError(1);
 498                         return;
 499                 }
 500         }
 501
 502         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 503                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 504                 OnError(0);
 505                 return;
 506         };
 507
 508         if(mifare_ultra_halt()) {
 509                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 510                 OnError(0);
 511                 return;
 512         };
 513
 514         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 515
 516         cmd_send(CMD_ACK,1,0,0,0,0);
 517         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 518         LEDsoff();
 519 }
 520
 521 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 522
 523         uint8_t pwd[16] = {0x00};
 524         byte_t blockdata[4] = {0x00};
 525
 526         memcpy(pwd, datain, 16);
 527
 528         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 529         clear_trace();
 530         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 531
 532         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 533                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 534                 OnError(0);
 535                 return;
 536         };
 537
 538         blockdata[0] = pwd[7];
 539         blockdata[1] = pwd[6];
 540         blockdata[2] = pwd[5];
 541         blockdata[3] = pwd[4];
 542         if(mifare_ultra_writeblock( 44, blockdata)) {
 543                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 544                 OnError(44);
 545                 return;
 546         };
 547
 548         blockdata[0] = pwd[3];
 549         blockdata[1] = pwd[2];
 550         blockdata[2] = pwd[1];
 551         blockdata[3] = pwd[0];
 552         if(mifare_ultra_writeblock( 45, blockdata)) {
 553                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 554                 OnError(45);
 555                 return;
 556         };
 557
 558         blockdata[0] = pwd[15];
 559         blockdata[1] = pwd[14];
 560         blockdata[2] = pwd[13];
 561         blockdata[3] = pwd[12];
 562         if(mifare_ultra_writeblock( 46, blockdata)) {
 563                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 564                 OnError(46);
 565                 return;
 566         };
 567
 568         blockdata[0] = pwd[11];
 569         blockdata[1] = pwd[10];
 570         blockdata[2] = pwd[9];
 571         blockdata[3] = pwd[8];
 572         if(mifare_ultra_writeblock( 47, blockdata)) {
 573                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 574                 OnError(47);
 575                 return;
 576         };
 577
 578         if(mifare_ultra_halt()) {
 579                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 580                 OnError(0);
 581                 return;
 582         };
 583
 584         cmd_send(CMD_ACK,1,0,0,0,0);
 585         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 586         LEDsoff();
 587 }
 588
 589 // Return 1 if the nonce is invalid else return 0
 590 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 591         return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 592         (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 593         (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 594 }
 595
 596
 597 //-----------------------------------------------------------------------------
 598 // MIFARE nested authentication.
 599 //
 600 //-----------------------------------------------------------------------------
 601 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 602 {
 603         // params
 604         uint8_t blockNo = arg0 & 0xff;
 605         uint8_t keyType = (arg0 >> 8) & 0xff;
 606         uint8_t targetBlockNo = arg1 & 0xff;
 607         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 608         uint64_t ui64Key = 0;
 609
 610         ui64Key = bytes_to_num(datain, 6);
 611
 612         // variables
 613         uint16_t rtr, i, j, len;
 614         uint16_t davg;
 615         static uint16_t dmin, dmax;
 616         uint8_t uid[10];
 617         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 618         uint8_t par[1];
 619         uint32_t target_nt[2], target_ks[2];
 620
 621         uint8_t par_array[4];
 622         uint16_t ncount = 0;
 623         struct Crypto1State mpcs = {0, 0};
 624         struct Crypto1State *pcs;
 625         pcs = &mpcs;
 626         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 627
 628         uint32_t auth1_time, auth2_time;
 629         static uint16_t delta_time;
 630
 631         // free eventually allocated BigBuf memory
 632         BigBuf_free();
 633         // clear trace
 634         clear_trace();
 635         set_tracing(false);
 636
 637         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 638
 639         LED_A_ON();
 640         LED_C_OFF();
 641
 642
 643         // statistics on nonce distance
 644         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 645                 LED_B_ON();
 646                 WDT_HIT();
 647
 648                 davg = dmax = 0;
 649                 dmin = 2000;
 650                 delta_time = 0;
 651
 652                 for (rtr = 0; rtr < 17; rtr++) {
 653
 654                         // prepare next select. No need to power down the card.
 655                         if(mifare_classic_halt(pcs, cuid)) {
 656                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 657                                 rtr--;
 658                                 continue;
 659                         }
 660
 661                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 662                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 663                                 rtr--;
 664                                 continue;
 665                         };
 666
 667                         auth1_time = 0;
 668                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 669                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 670                                 rtr--;
 671                                 continue;
 672                         };
 673
 674                         if (delta_time) {
 675                                 auth2_time = auth1_time + delta_time;
 676                         } else {
 677                                 auth2_time = 0;
 678                         }
 679                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 680                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 681                                 rtr--;
 682                                 continue;
 683                         };
 684
 685                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 686                         for (i = 101; i < 1200; i++) {
 687                                 nttmp = prng_successor(nttmp, 1);
 688                                 if (nttmp == nt2) break;
 689                         }
 690
 691                         if (i != 1200) {
 692                                 if (rtr != 0) {
 693                                         davg += i;
 694                                         dmin = MIN(dmin, i);
 695                                         dmax = MAX(dmax, i);
 696                                 }
 697                                 else {
 698                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 699                                 }
 700                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 701                         }
 702                 }
 703
 704                 if (rtr <= 1)   return;
 705
 706                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 707
 708                 if (MF_DBGLEVEL >= 3) Dbprintf("min=%d max=%d avg=%d, delta_time=%d", dmin, dmax, davg, delta_time);
 709
 710                 dmin = davg - 2;
 711                 dmax = davg + 2;
 712
 713                 LED_B_OFF();
 714
 715         }
 716 //  -------------------------------------------------------------------------------------------------
 717
 718         LED_C_ON();
 719
 720         //  get crypted nonces for target sector
 721         for(i=0; i < 2; i++) { // look for exactly two different nonces
 722
 723                 target_nt[i] = 0;
 724                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 725
 726                         // prepare next select. No need to power down the card.
 727                         if(mifare_classic_halt(pcs, cuid)) {
 728                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 729                                 continue;
 730                         }
 731
 732                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 733                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 734                                 continue;
 735                         };
 736
 737                         auth1_time = 0;
 738                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 739                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 740                                 continue;
 741                         };
 742
 743                         // nested authentication
 744                         auth2_time = auth1_time + delta_time;
 745                         len = mifare_sendcmd_shortex(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 746                         if (len != 4) {
 747                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 748                                 continue;
 749                         };
 750
 751                         nt2 = bytes_to_num(receivedAnswer, 4);
 752                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 753
 754                         // Parity validity check
 755                         for (j = 0; j < 4; j++) {
 756                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 757                         }
 758
 759                         ncount = 0;
 760                         nttest = prng_successor(nt1, dmin - 1);
 761                         for (j = dmin; j < dmax + 1; j++) {
 762                                 nttest = prng_successor(nttest, 1);
 763                                 ks1 = nt2 ^ nttest;
 764
 765                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 766                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 767                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 768                                                 target_nt[i] = 0;
 769                                                 break;
 770                                         }
 771                                         target_nt[i] = nttest;
 772                                         target_ks[i] = ks1;
 773                                         ncount++;
 774                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 775                                                 target_nt[i] = 0;
 776                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 777                                                 break;
 778                                         }
 779                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 780                                 }
 781                         }
 782                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 783                 }
 784         }
 785
 786         LED_C_OFF();
 787
 788         //  ----------------------------- crypto1 destroy
 789         crypto1_destroy(pcs);
 790
 791         byte_t buf[4 + 4 * 4];
 792         memcpy(buf, &cuid, 4);
 793         memcpy(buf+4, &target_nt[0], 4);
 794         memcpy(buf+8, &target_ks[0], 4);
 795         memcpy(buf+12, &target_nt[1], 4);
 796         memcpy(buf+16, &target_ks[1], 4);
 797
 798         LED_B_ON();
 799         cmd_send(CMD_ACK, 0, 2, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 800         LED_B_OFF();
 801
 802         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 803
 804         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 805         LEDsoff();
 806         set_tracing(TRUE);
 807 }
 808
 809 //-----------------------------------------------------------------------------
 810 // MIFARE check keys. key count up to 85.
 811 //
 812 //-----------------------------------------------------------------------------
 813 void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 814 {
 815   // params
 816         uint8_t blockNo = arg0;
 817         uint8_t keyType = arg1;
 818         uint8_t keyCount = arg2;
 819         uint64_t ui64Key = 0;
 820
 821         // variables
 822         int i;
 823         byte_t isOK = 0;
 824         uint8_t uid[10];
 825         uint32_t cuid;
 826         struct Crypto1State mpcs = {0, 0};
 827         struct Crypto1State *pcs;
 828         pcs = &mpcs;
 829
 830         // clear debug level
 831         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 832         MF_DBGLEVEL = MF_DBG_NONE;
 833
 834         // clear trace
 835         clear_trace();
 836         set_tracing(TRUE);
 837
 838         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 839
 840         LED_A_ON();
 841         LED_B_OFF();
 842         LED_C_OFF();
 843
 844         for (i = 0; i < keyCount; i++) {
 845                 if(mifare_classic_halt(pcs, cuid)) {
 846                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 847                 }
 848
 849                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 850                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 851                         break;
 852                 };
 853
 854                 ui64Key = bytes_to_num(datain + i * 6, 6);
 855                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 856                         continue;
 857                 };
 858
 859                 isOK = 1;
 860                 break;
 861         }
 862
 863         //  ----------------------------- crypto1 destroy
 864         crypto1_destroy(pcs);
 865
 866         LED_B_ON();
 867     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 868         LED_B_OFF();
 869
 870         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 871         LEDsoff();
 872
 873         // restore debug level
 874         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 875 }
 876
 877 //-----------------------------------------------------------------------------
 878 // MIFARE commands set debug level
 879 //
 880 //-----------------------------------------------------------------------------
 881 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 882         MF_DBGLEVEL = arg0;
 883         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 884 }
 885
 886 //-----------------------------------------------------------------------------
 887 // Work with emulator memory
 888 //
 889 //-----------------------------------------------------------------------------
 890 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 891         emlClearMem();
 892 }
 893
 894 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 895         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 896 }
 897
 898 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 899         byte_t buf[USB_CMD_DATA_SIZE];
 900         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 901
 902         LED_B_ON();
 903         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 904         LED_B_OFF();
 905 }
 906
 907 //-----------------------------------------------------------------------------
 908 // Load a card into the emulator memory
 909 //
 910 //-----------------------------------------------------------------------------
 911 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 912         uint8_t numSectors = arg0;
 913         uint8_t keyType = arg1;
 914         uint64_t ui64Key = 0;
 915         uint32_t cuid;
 916         struct Crypto1State mpcs = {0, 0};
 917         struct Crypto1State *pcs;
 918         pcs = &mpcs;
 919
 920         // variables
 921         byte_t dataoutbuf[16];
 922         byte_t dataoutbuf2[16];
 923         uint8_t uid[10];
 924
 925         // clear trace
 926         clear_trace();
 927         set_tracing(false);
 928
 929         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 930
 931         LED_A_ON();
 932         LED_B_OFF();
 933         LED_C_OFF();
 934
 935         bool isOK = true;
 936
 937         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 938                 isOK = false;
 939                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 940         }
 941
 942         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 943                 ui64Key = emlGetKey(sectorNo, keyType);
 944                 if (sectorNo == 0){
 945                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 946                                 isOK = false;
 947                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 948                                 break;
 949                         }
 950                 } else {
 951                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 952                                 isOK = false;
 953                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 954                                 break;
 955                         }
 956                 }
 957
 958                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 959                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 960                                 isOK = false;
 961                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 962                                 break;
 963                         };
 964                         if (isOK) {
 965                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 966                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 967                                 } else {        // sector trailer, keep the keys, set only the AC
 968                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 969                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 970                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 971                                 }
 972                         }
 973                 }
 974
 975         }
 976
 977         if(mifare_classic_halt(pcs, cuid)) {
 978                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 979         };
 980
 981         //  ----------------------------- crypto1 destroy
 982         crypto1_destroy(pcs);
 983
 984         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 985         LEDsoff();
 986
 987         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
 988
 989 }
 990
 991
 992 //-----------------------------------------------------------------------------
 993 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
 994 //
 995 //-----------------------------------------------------------------------------
 996 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 997
 998   // params
 999         uint8_t needWipe = arg0;
1000         // bit 0 - need get UID
1001         // bit 1 - need wupC
1002         // bit 2 - need HALT after sequence
1003         // bit 3 - need init FPGA and field before sequence
1004         // bit 4 - need reset FPGA and LED
1005         uint8_t workFlags = arg1;
1006         uint8_t blockNo = arg2;
1007
1008         // card commands
1009         uint8_t wupC1[]       = { 0x40 };
1010         uint8_t wupC2[]       = { 0x43 };
1011         uint8_t wipeC[]       = { 0x41 };
1012
1013         // variables
1014         byte_t isOK = 0;
1015         uint8_t uid[10] = {0x00};
1016         uint8_t d_block[18] = {0x00};
1017         uint32_t cuid;
1018
1019         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1020         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1021
1022         // reset FPGA and LED
1023         if (workFlags & 0x08) {
1024                 LED_A_ON();
1025                 LED_B_OFF();
1026                 LED_C_OFF();
1027
1028                 clear_trace();
1029                 set_tracing(TRUE);
1030                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1031         }
1032
1033         while (true) {
1034
1035                 // get UID from chip
1036                 if (workFlags & 0x01) {
1037                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
1038                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1039                                 //break;
1040                         };
1041
1042                         if(mifare_classic_halt(NULL, cuid)) {
1043                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1044                                 //break;
1045                         };
1046                 };
1047
1048                 // reset chip
1049                 if (needWipe){
1050                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1051                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1052                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1053                                 break;
1054                         };
1055
1056                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1057                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1058                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1059                                 break;
1060                         };
1061
1062                         if(mifare_classic_halt(NULL, cuid)) {
1063                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1064                                 break;
1065                         };
1066                 };
1067
1068                 // write block
1069                 if (workFlags & 0x02) {
1070                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1071                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1072                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1073                                 break;
1074                         };
1075
1076                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1077                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1078                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1079                                 break;
1080                         };
1081                 }
1082
1083                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1084                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1085                         break;
1086                 };
1087
1088                 memcpy(d_block, datain, 16);
1089                 AppendCrc14443a(d_block, 16);
1090
1091                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1092                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1093                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1094                         break;
1095                 };
1096
1097                 if (workFlags & 0x04) {
1098                         if (mifare_classic_halt(NULL, cuid)) {
1099                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1100                                 break;
1101                         };
1102                 }
1103
1104                 isOK = 1;
1105                 break;
1106         }
1107
1108         LED_B_ON();
1109         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1110         LED_B_OFF();
1111
1112         if ((workFlags & 0x10) || (!isOK)) {
1113                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1114                 LEDsoff();
1115         }
1116 }
1117
1118
1119 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1120
1121   // params
1122         // bit 1 - need wupC
1123         // bit 2 - need HALT after sequence
1124         // bit 3 - need init FPGA and field before sequence
1125         // bit 4 - need reset FPGA and LED
1126         uint8_t workFlags = arg0;
1127         uint8_t blockNo = arg2;
1128
1129         // card commands
1130         uint8_t wupC1[]       = { 0x40 };
1131         uint8_t wupC2[]       = { 0x43 };
1132
1133         // variables
1134         byte_t isOK = 0;
1135         uint8_t data[18] = {0x00};
1136         uint32_t cuid = 0;
1137
1138         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1139         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1140
1141         if (workFlags & 0x08) {
1142                 LED_A_ON();
1143                 LED_B_OFF();
1144                 LED_C_OFF();
1145
1146                 clear_trace();
1147                 set_tracing(TRUE);
1148                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1149         }
1150
1151         while (true) {
1152                 if (workFlags & 0x02) {
1153                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1154                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1155                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1156                                 break;
1157                         };
1158
1159                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1160                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1161                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1162                                 break;
1163                         };
1164                 }
1165
1166                 // read block
1167                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1168                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1169                         break;
1170                 };
1171                 memcpy(data, receivedAnswer, 18);
1172
1173                 if (workFlags & 0x04) {
1174                         if (mifare_classic_halt(NULL, cuid)) {
1175                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1176                                 break;
1177                         };
1178                 }
1179
1180                 isOK = 1;
1181                 break;
1182         }
1183
1184         LED_B_ON();
1185         cmd_send(CMD_ACK,isOK,0,0,data,18);
1186         LED_B_OFF();
1187
1188         if ((workFlags & 0x10) || (!isOK)) {
1189                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1190                 LEDsoff();
1191         }
1192 }
1193
1194 void MifareCIdent(){
1195
1196         // card commands
1197         uint8_t wupC1[]       = { 0x40 };
1198         uint8_t wupC2[]       = { 0x43 };
1199
1200         // variables
1201         byte_t isOK = 1;
1202
1203         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1204         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1205
1206         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1207         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1208                 isOK = 0;
1209         };
1210
1211         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1212         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1213                 isOK = 0;
1214         };
1215
1216         if (mifare_classic_halt(NULL, 0)) {
1217                 isOK = 0;
1218         };
1219
1220         cmd_send(CMD_ACK,isOK,0,0,0,0);
1221 }
1222
1223 void MifareCollectNonces(uint32_t arg0, uint32_t arg1){
1224
1225         BigBuf_free();
1226
1227         uint32_t iterations = arg0;
1228         uint8_t uid[10] = {0x00};
1229
1230         uint8_t *response = BigBuf_malloc(MAX_MIFARE_FRAME_SIZE);
1231         uint8_t *responsePar = BigBuf_malloc(MAX_MIFARE_PARITY_SIZE);
1232
1233         uint8_t mf_auth[] = { 0x60,0x00,0xf5,0x7b };
1234
1235         // get memory from BigBuf.
1236         uint8_t *nonces = BigBuf_malloc(iterations * 4);
1237
1238         LED_A_ON();
1239         LED_B_OFF();
1240         LED_C_OFF();
1241
1242         clear_trace();
1243         set_tracing(TRUE);
1244         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1245
1246         for (int i = 0; i < iterations; i++) {
1247
1248                 WDT_HIT();
1249
1250                 // Test if the action was cancelled
1251                 if(BUTTON_PRESS()) break;
1252
1253                 //              if(mifare_classic_halt(pcs, cuid)) {
1254                 //                      if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
1255                 //}
1256
1257                 if(!iso14443a_select_card(uid, NULL, NULL)) {
1258                         if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
1259                         continue;
1260                 };
1261
1262                 // Transmit MIFARE_CLASSIC_AUTH.
1263                 ReaderTransmit(mf_auth, sizeof(mf_auth), NULL);
1264
1265                 // Receive the (4 Byte) "random" nonce
1266                 if (!ReaderReceive(response, responsePar)) {
1267                         if (MF_DBGLEVEL >= 1)   Dbprintf("Couldn't receive tag nonce");
1268                         continue;
1269                 }
1270
1271                 nonces[i*4] = bytes_to_num(response, 4);
1272         }
1273
1274         int packLen =  iterations * 4;
1275         int packSize = 0;
1276         int packNum = 0;
1277         while (packLen > 0) {
1278                 packSize = MIN(USB_CMD_DATA_SIZE, packLen);
1279                 LED_B_ON();
1280                 cmd_send(CMD_ACK, 77, 0, packSize, nonces - packLen, packSize);
1281                 LED_B_OFF();
1282
1283                 packLen -= packSize;
1284                 packNum++;
1285         }
1286         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1287         LEDsoff();
1288 }
1289
1290 //
1291 // DESFIRE
1292 //
1293
1294 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1295
1296         byte_t dataout[11] = {0x00};
1297         uint8_t uid[10] = {0x00};
1298         uint32_t cuid = 0x00;
1299
1300         clear_trace();
1301         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1302
1303         int len = iso14443a_select_card(uid, NULL, &cuid);
1304         if(!len) {
1305                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1306                 OnError(1);
1307                 return;
1308         };
1309
1310         if(mifare_desfire_des_auth1(cuid, dataout)){
1311                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1312                 OnError(4);
1313                 return;
1314         }
1315
1316         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1317     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1318 }
1319
1320 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1321
1322         uint32_t cuid = arg0;
1323         uint8_t key[16] = {0x00};
1324         byte_t dataout[12] = {0x00};
1325         byte_t isOK = 0;
1326
1327         memcpy(key, datain, 16);
1328
1329         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1330
1331         if( isOK) {
1332             if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1333                 OnError(4);
1334                 return;
1335         }
1336
1337         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1338
1339         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1340         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1341         LEDsoff();
1342 }