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

   1 //-----------------------------------------------------------------------------
   2 // Merlok - June 2011, 2012
   3 // Gerhard de Koning Gans - May 2008
   4 // Hagen Fritsch - June 2010
   5 // Midnitesnake - Dec 2013
   6 // Andy Davies  - Apr 2014
   7 // Iceman - May 2014
   8 //
   9 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
  10 // at your option, any later version. See the LICENSE.txt file for the text of
  11 // the license.
  12 //-----------------------------------------------------------------------------
  13 // Routines to support ISO 14443 type A.
  14 //-----------------------------------------------------------------------------
  15
  16 #include "mifarecmd.h"
  17 #include "apps.h"
  18 #include "util.h"
  19 #include "crc.h"
  20
  21 // the block number for the ISO14443-4 PCB
  22 uint8_t pcb_blocknum = 0;
  23 // Deselect card by sending a s-block. the crc is precalced for speed
  24 static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
  25
  26 //-----------------------------------------------------------------------------
  27 // Select, Authenticate, Read a MIFARE tag.
  28 // read block
  29 //-----------------------------------------------------------------------------
  30 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  31 {
  32   // params
  33         uint8_t blockNo = arg0;
  34         uint8_t keyType = arg1;
  35         uint64_t ui64Key = 0;
  36         ui64Key = bytes_to_num(datain, 6);
  37
  38         // variables
  39         byte_t isOK = 0;
  40         byte_t dataoutbuf[16];
  41         uint8_t uid[10];
  42         uint32_t cuid;
  43         struct Crypto1State mpcs = {0, 0};
  44         struct Crypto1State *pcs;
  45         pcs = &mpcs;
  46
  47         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  48
  49         clear_trace();
  50
  51         LED_A_ON();
  52         LED_B_OFF();
  53         LED_C_OFF();
  54
  55         while (true) {
  56                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
  57                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  58                         break;
  59                 };
  60
  61                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  62                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  63                         break;
  64                 };
  65
  66                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  67                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  68                         break;
  69                 };
  70
  71                 if(mifare_classic_halt(pcs, cuid)) {
  72                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  73                         break;
  74                 };
  75
  76                 isOK = 1;
  77                 break;
  78         }
  79
  80         //  ----------------------------- crypto1 destroy
  81         crypto1_destroy(pcs);
  82
  83         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  84
  85         LED_B_ON();
  86         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  87         LED_B_OFF();
  88
  89         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  90         LEDsoff();
  91 }
  92
  93 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  94
  95         bool turnOffField = (arg0 == 1);
  96
  97         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
  98
  99         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 100
 101         clear_trace();
 102
 103         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 104                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 105                 OnError(0);
 106                 return;
 107         };
 108
 109         if(!mifare_ultra_auth(keybytes)){
 110                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 111                 OnError(1);
 112                 return;
 113         }
 114
 115         if (turnOffField) {
 116                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 117                 LEDsoff();
 118         }
 119         cmd_send(CMD_ACK,1,0,0,0,0);
 120 }
 121
 122 // Arg0 = BlockNo,
 123 // Arg1 = UsePwd bool
 124 // datain = PWD bytes,
 125 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 126 {
 127         uint8_t blockNo = arg0;
 128         byte_t dataout[16] = {0x00};
 129         bool useKey = (arg1 == 1); //UL_C
 130         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 131
 132         LEDsoff();
 133         LED_A_ON();
 134         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 135
 136         clear_trace();
 137
 138         int len = iso14443a_select_card(NULL, NULL, NULL);
 139         if(!len) {
 140                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 141                 OnError(1);
 142                 return;
 143         }
 144
 145         // UL-C authentication
 146         if ( useKey ) {
 147                 uint8_t key[16] = {0x00};
 148                 memcpy(key, datain, sizeof(key) );
 149
 150                 if ( !mifare_ultra_auth(key) ) {
 151                         OnError(1);
 152                         return;
 153                 }
 154         }
 155
 156         // UL-EV1 / NTAG authentication
 157         if ( usePwd ) {
 158                 uint8_t pwd[4] = {0x00};
 159                 memcpy(pwd, datain, 4);
 160                 uint8_t pack[4] = {0,0,0,0};
 161                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 162                         OnError(1);
 163                         return;
 164                 }
 165         }
 166
 167         if( mifare_ultra_readblock(blockNo, dataout) ) {
 168                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 169                 OnError(2);
 170                 return;
 171         }
 172
 173         if( mifare_ultra_halt() ) {
 174                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 175                 OnError(3);
 176                 return;
 177         }
 178
 179         cmd_send(CMD_ACK,1,0,0,dataout,16);
 180         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 181         LEDsoff();
 182 }
 183
 184 //-----------------------------------------------------------------------------
 185 // Select, Authenticate, Read a MIFARE tag.
 186 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 187 //-----------------------------------------------------------------------------
 188 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 189 {
 190   // params
 191         uint8_t sectorNo = arg0;
 192         uint8_t keyType = arg1;
 193         uint64_t ui64Key = 0;
 194         ui64Key = bytes_to_num(datain, 6);
 195
 196         // variables
 197         byte_t isOK = 0;
 198         byte_t dataoutbuf[16 * 16];
 199         uint8_t uid[10];
 200         uint32_t cuid;
 201         struct Crypto1State mpcs = {0, 0};
 202         struct Crypto1State *pcs;
 203         pcs = &mpcs;
 204
 205         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 206
 207         clear_trace();
 208
 209         LED_A_ON();
 210         LED_B_OFF();
 211         LED_C_OFF();
 212
 213         isOK = 1;
 214         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 215                 isOK = 0;
 216                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 217         }
 218
 219
 220         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 221                 isOK = 0;
 222                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 223         }
 224
 225         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 226                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 227                         isOK = 0;
 228                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 229                         break;
 230                 }
 231         }
 232
 233         if(mifare_classic_halt(pcs, cuid)) {
 234                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 235         }
 236
 237         //  ----------------------------- crypto1 destroy
 238         crypto1_destroy(pcs);
 239
 240         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 241
 242         LED_B_ON();
 243         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 244         LED_B_OFF();
 245
 246         // Thats it...
 247         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 248         LEDsoff();
 249 }
 250
 251 // arg0 = blockNo (start)
 252 // arg1 = Pages (number of blocks)
 253 // arg2 = useKey
 254 // datain = KEY bytes
 255 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 256 {
 257         LEDsoff();
 258         LED_A_ON();
 259         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 260
 261         // free eventually allocated BigBuf memory
 262         BigBuf_free();
 263         clear_trace();
 264
 265         // params
 266         uint8_t blockNo = arg0;
 267         uint16_t blocks = arg1;
 268         bool useKey = (arg2 == 1); //UL_C
 269         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 270         uint32_t countblocks = 0;
 271         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 272         if (dataout == NULL){
 273                 Dbprintf("out of memory");
 274                 OnError(1);
 275                 return;
 276         }
 277
 278         int len = iso14443a_select_card(NULL, NULL, NULL);
 279         if (!len) {
 280                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 281                 OnError(1);
 282                 return;
 283         }
 284
 285         // UL-C authentication
 286         if ( useKey ) {
 287                 uint8_t key[16] = {0x00};
 288                 memcpy(key, datain, sizeof(key) );
 289
 290                 if ( !mifare_ultra_auth(key) ) {
 291                         OnError(1);
 292                         return;
 293                 }
 294         }
 295
 296         // UL-EV1 / NTAG authentication
 297         if (usePwd) {
 298                 uint8_t pwd[4] = {0x00};
 299                 memcpy(pwd, datain, sizeof(pwd));
 300                 uint8_t pack[4] = {0,0,0,0};
 301
 302                 if (!mifare_ul_ev1_auth(pwd, pack)){
 303                         OnError(1);
 304                         return;
 305                 }
 306         }
 307
 308         for (int i = 0; i < blocks; i++){
 309                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 310                         Dbprintf("Data exceeds buffer!!");
 311                         break;
 312                 }
 313
 314                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 315
 316                 if (len) {
 317                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 318                         // if no blocks read - error out
 319                         if (i==0){
 320                                 OnError(2);
 321                                 return;
 322                         } else {
 323                                 //stop at last successful read block and return what we got
 324                                 break;
 325                         }
 326                 } else {
 327                         countblocks++;
 328                 }
 329         }
 330
 331         len = mifare_ultra_halt();
 332         if (len) {
 333                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 334                 OnError(3);
 335                 return;
 336         }
 337
 338         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 339
 340         countblocks *= 4;
 341
 342         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 343         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 344         LEDsoff();
 345         BigBuf_free();
 346 }
 347
 348 //-----------------------------------------------------------------------------
 349 // Select, Authenticate, Write a MIFARE tag.
 350 // read block
 351 //-----------------------------------------------------------------------------
 352 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 353 {
 354         // params
 355         uint8_t blockNo = arg0;
 356         uint8_t keyType = arg1;
 357         uint64_t ui64Key = 0;
 358         byte_t blockdata[16];
 359
 360         ui64Key = bytes_to_num(datain, 6);
 361         memcpy(blockdata, datain + 10, 16);
 362
 363         // variables
 364         byte_t isOK = 0;
 365         uint8_t uid[10];
 366         uint32_t cuid;
 367         struct Crypto1State mpcs = {0, 0};
 368         struct Crypto1State *pcs;
 369         pcs = &mpcs;
 370
 371         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 372
 373         clear_trace();
 374
 375         LED_A_ON();
 376         LED_B_OFF();
 377         LED_C_OFF();
 378
 379         while (true) {
 380                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 381                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 382                         break;
 383                 };
 384
 385                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 386                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 387                         break;
 388                 };
 389
 390                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 391                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 392                         break;
 393                 };
 394
 395                 if(mifare_classic_halt(pcs, cuid)) {
 396                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 397                         break;
 398                 };
 399
 400                 isOK = 1;
 401                 break;
 402         }
 403
 404         //  ----------------------------- crypto1 destroy
 405         crypto1_destroy(pcs);
 406
 407         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 408
 409         LED_B_ON();
 410         cmd_send(CMD_ACK,isOK,0,0,0,0);
 411         LED_B_OFF();
 412
 413
 414         // Thats it...
 415         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 416         LEDsoff();
 417 }
 418
 419 /* // Command not needed but left for future testing
 420 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 421 {
 422         uint8_t blockNo = arg0;
 423         byte_t blockdata[16] = {0x00};
 424
 425         memcpy(blockdata, datain, 16);
 426
 427         uint8_t uid[10] = {0x00};
 428
 429         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 430
 431         clear_trace();
 432         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 433
 434         if(!iso14443a_select_card(uid, NULL, NULL)) {
 435                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 436                 OnError(0);
 437                 return;
 438         };
 439
 440         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 441                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 442                 OnError(0);
 443                 return; };
 444
 445         if(mifare_ultra_halt()) {
 446                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 447                 OnError(0);
 448                 return;
 449         };
 450
 451         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 452
 453         cmd_send(CMD_ACK,1,0,0,0,0);
 454         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 455         LEDsoff();
 456 }
 457 */
 458
 459 // Arg0   : Block to write to.
 460 // Arg1   : 0 = use no authentication.
 461 //          1 = use 0x1A authentication.
 462 //          2 = use 0x1B authentication.
 463 // datain : 4 first bytes is data to be written.
 464 //        : 4/16 next bytes is authentication key.
 465 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 466 {
 467         uint8_t blockNo = arg0;
 468         bool useKey = (arg1 == 1); //UL_C
 469         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 470         byte_t blockdata[4] = {0x00};
 471
 472         memcpy(blockdata, datain,4);
 473
 474         LEDsoff();
 475         LED_A_ON();
 476         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 477
 478         clear_trace();
 479
 480         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 481                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 482                 OnError(0);
 483                 return;
 484         };
 485
 486         // UL-C authentication
 487         if ( useKey ) {
 488                 uint8_t key[16] = {0x00};
 489                 memcpy(key, datain+4, sizeof(key) );
 490
 491                 if ( !mifare_ultra_auth(key) ) {
 492                         OnError(1);
 493                         return;
 494                 }
 495         }
 496
 497         // UL-EV1 / NTAG authentication
 498         if (usePwd) {
 499                 uint8_t pwd[4] = {0x00};
 500                 memcpy(pwd, datain+4, 4);
 501                 uint8_t pack[4] = {0,0,0,0};
 502                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 503                         OnError(1);
 504                         return;
 505                 }
 506         }
 507
 508         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 509                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 510                 OnError(0);
 511                 return;
 512         };
 513
 514         if(mifare_ultra_halt()) {
 515                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 516                 OnError(0);
 517                 return;
 518         };
 519
 520         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 521
 522         cmd_send(CMD_ACK,1,0,0,0,0);
 523         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 524         LEDsoff();
 525 }
 526
 527 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 528
 529         uint8_t pwd[16] = {0x00};
 530         byte_t blockdata[4] = {0x00};
 531
 532         memcpy(pwd, datain, 16);
 533
 534         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 535         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 536
 537         clear_trace();
 538
 539         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 540                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 541                 OnError(0);
 542                 return;
 543         };
 544
 545         blockdata[0] = pwd[7];
 546         blockdata[1] = pwd[6];
 547         blockdata[2] = pwd[5];
 548         blockdata[3] = pwd[4];
 549         if(mifare_ultra_writeblock( 44, blockdata)) {
 550                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 551                 OnError(44);
 552                 return;
 553         };
 554
 555         blockdata[0] = pwd[3];
 556         blockdata[1] = pwd[2];
 557         blockdata[2] = pwd[1];
 558         blockdata[3] = pwd[0];
 559         if(mifare_ultra_writeblock( 45, blockdata)) {
 560                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 561                 OnError(45);
 562                 return;
 563         };
 564
 565         blockdata[0] = pwd[15];
 566         blockdata[1] = pwd[14];
 567         blockdata[2] = pwd[13];
 568         blockdata[3] = pwd[12];
 569         if(mifare_ultra_writeblock( 46, blockdata)) {
 570                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 571                 OnError(46);
 572                 return;
 573         };
 574
 575         blockdata[0] = pwd[11];
 576         blockdata[1] = pwd[10];
 577         blockdata[2] = pwd[9];
 578         blockdata[3] = pwd[8];
 579         if(mifare_ultra_writeblock( 47, blockdata)) {
 580                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 581                 OnError(47);
 582                 return;
 583         };
 584
 585         if(mifare_ultra_halt()) {
 586                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 587                 OnError(0);
 588                 return;
 589         };
 590
 591         cmd_send(CMD_ACK,1,0,0,0,0);
 592         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 593         LEDsoff();
 594 }
 595
 596 // Return 1 if the nonce is invalid else return 0
 597 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 598         return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 599         (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 600         (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 601 }
 602
 603
 604 //-----------------------------------------------------------------------------
 605 // MIFARE nested authentication.
 606 //
 607 //-----------------------------------------------------------------------------
 608 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 609 {
 610         // params
 611         uint8_t blockNo = arg0 & 0xff;
 612         uint8_t keyType = (arg0 >> 8) & 0xff;
 613         uint8_t targetBlockNo = arg1 & 0xff;
 614         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 615         uint64_t ui64Key = 0;
 616
 617         ui64Key = bytes_to_num(datain, 6);
 618
 619         // variables
 620         uint16_t rtr, i, j, len;
 621         uint16_t davg;
 622         static uint16_t dmin, dmax;
 623         uint8_t uid[10];
 624         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 625         uint8_t par[1];
 626         uint32_t target_nt[2], target_ks[2];
 627
 628         uint8_t par_array[4];
 629         uint16_t ncount = 0;
 630         struct Crypto1State mpcs = {0, 0};
 631         struct Crypto1State *pcs;
 632         pcs = &mpcs;
 633         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 634
 635         uint32_t auth1_time, auth2_time;
 636         static uint16_t delta_time;
 637
 638         LED_A_ON();
 639         LED_C_OFF();
 640         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 641
 642         // free eventually allocated BigBuf memory
 643         BigBuf_free();
 644
 645         if (calibrate) clear_trace();
 646         set_tracing(true);
 647
 648         // statistics on nonce distance
 649         int16_t isOK = 0;
 650         #define NESTED_MAX_TRIES 12
 651         uint16_t unsuccessfull_tries = 0;
 652         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 653                 LED_B_ON();
 654                 WDT_HIT();
 655
 656                 davg = dmax = 0;
 657                 dmin = 2000;
 658                 delta_time = 0;
 659
 660                 for (rtr = 0; rtr < 17; rtr++) {
 661
 662                         // Test if the action was cancelled
 663                         if(BUTTON_PRESS()) {
 664                                 isOK = -2;
 665                                 break;
 666                         }
 667
 668                         // prepare next select. No need to power down the card.
 669                         if(mifare_classic_halt(pcs, cuid)) {
 670                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 671                                 rtr--;
 672                                 continue;
 673                         }
 674
 675                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 676                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 677                                 rtr--;
 678                                 continue;
 679                         };
 680
 681                         auth1_time = 0;
 682                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 683                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 684                                 rtr--;
 685                                 continue;
 686                         };
 687
 688                         if (delta_time) {
 689                                 auth2_time = auth1_time + delta_time;
 690                         } else {
 691                                 auth2_time = 0;
 692                         }
 693                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 694                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 695                                 rtr--;
 696                                 continue;
 697                         };
 698
 699                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 700                         for (i = 101; i < 1200; i++) {
 701                                 nttmp = prng_successor(nttmp, 1);
 702                                 if (nttmp == nt2) break;
 703                         }
 704
 705                         if (i != 1200) {
 706                                 if (rtr != 0) {
 707                                         davg += i;
 708                                         dmin = MIN(dmin, i);
 709                                         dmax = MAX(dmax, i);
 710                                 }
 711                                 else {
 712                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 713                                 }
 714                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 715                         } else {
 716                                 unsuccessfull_tries++;
 717                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 718                                         isOK = -3;
 719                                 }
 720                         }
 721                 }
 722
 723                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 724
 725                 if (MF_DBGLEVEL >= 3) Dbprintf("rtr=%d isOK=%d min=%d max=%d avg=%d, delta_time=%d", rtr, isOK, dmin, dmax, davg, delta_time);
 726
 727                 dmin = davg - 2;
 728                 dmax = davg + 2;
 729
 730                 LED_B_OFF();
 731
 732         }
 733         //  -------------------------------------------------------------------------------------------------
 734
 735         LED_C_ON();
 736
 737         //  get crypted nonces for target sector
 738         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 739
 740                 target_nt[i] = 0;
 741                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 742
 743                         // prepare next select. No need to power down the card.
 744                         if(mifare_classic_halt(pcs, cuid)) {
 745                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 746                                 continue;
 747                         }
 748
 749                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 750                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 751                                 continue;
 752                         };
 753
 754                         auth1_time = 0;
 755                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 756                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 757                                 continue;
 758                         };
 759
 760                         // nested authentication
 761                         auth2_time = auth1_time + delta_time;
 762                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 763                         if (len != 4) {
 764                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 765                                 continue;
 766                         };
 767
 768                         nt2 = bytes_to_num(receivedAnswer, 4);
 769                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 770
 771                         // Parity validity check
 772                         for (j = 0; j < 4; j++) {
 773                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 774                         }
 775
 776                         ncount = 0;
 777                         nttest = prng_successor(nt1, dmin - 1);
 778                         for (j = dmin; j < dmax + 1; j++) {
 779                                 nttest = prng_successor(nttest, 1);
 780                                 ks1 = nt2 ^ nttest;
 781
 782                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 783                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 784                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 785                                                 target_nt[i] = 0;
 786                                                 break;
 787                                         }
 788                                         target_nt[i] = nttest;
 789                                         target_ks[i] = ks1;
 790                                         ncount++;
 791                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 792                                                 target_nt[i] = 0;
 793                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 794                                                 break;
 795                                         }
 796                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 797                                 }
 798                         }
 799                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 800                 }
 801         }
 802
 803         LED_C_OFF();
 804
 805         //  ----------------------------- crypto1 destroy
 806         crypto1_destroy(pcs);
 807
 808         byte_t buf[4 + 4 * 4];
 809         memcpy(buf, &cuid, 4);
 810         memcpy(buf+4, &target_nt[0], 4);
 811         memcpy(buf+8, &target_ks[0], 4);
 812         memcpy(buf+12, &target_nt[1], 4);
 813         memcpy(buf+16, &target_ks[1], 4);
 814
 815         LED_B_ON();
 816         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 817         LED_B_OFF();
 818
 819         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 820
 821         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 822         LEDsoff();
 823 }
 824
 825 //-----------------------------------------------------------------------------
 826 // MIFARE check keys. key count up to 85.
 827 //
 828 //-----------------------------------------------------------------------------
 829 void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 830 {
 831   // params
 832         uint8_t blockNo = arg0 & 0xff;
 833         uint8_t keyType = (arg0 >> 8) & 0xff;
 834         bool clearTrace = arg1;
 835         uint8_t keyCount = arg2;
 836         uint64_t ui64Key = 0;
 837
 838         // variables
 839         int i;
 840         byte_t isOK = 0;
 841         uint8_t uid[10];
 842         uint32_t cuid;
 843         struct Crypto1State mpcs = {0, 0};
 844         struct Crypto1State *pcs;
 845         pcs = &mpcs;
 846
 847         // clear debug level
 848         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 849         MF_DBGLEVEL = MF_DBG_NONE;
 850
 851         LED_A_ON();
 852         LED_B_OFF();
 853         LED_C_OFF();
 854         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 855
 856         if (clearTrace) clear_trace();
 857         set_tracing(TRUE);
 858
 859         for (i = 0; i < keyCount; i++) {
 860                 if(mifare_classic_halt(pcs, cuid)) {
 861                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 862                 }
 863
 864                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 865                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 866                         break;
 867                 };
 868
 869                 ui64Key = bytes_to_num(datain + i * 6, 6);
 870                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 871                         continue;
 872                 };
 873
 874                 isOK = 1;
 875                 break;
 876         }
 877
 878         //  ----------------------------- crypto1 destroy
 879         crypto1_destroy(pcs);
 880
 881         LED_B_ON();
 882     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 883         LED_B_OFF();
 884
 885         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 886         LEDsoff();
 887
 888         // restore debug level
 889         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 890 }
 891
 892 //-----------------------------------------------------------------------------
 893 // MIFARE commands set debug level
 894 //
 895 //-----------------------------------------------------------------------------
 896 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 897         MF_DBGLEVEL = arg0;
 898         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 899 }
 900
 901 //-----------------------------------------------------------------------------
 902 // Work with emulator memory
 903 //
 904 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
 905 // involved in dealing with emulator memory. But if it is called later, it might
 906 // destroy the Emulator Memory.
 907 //-----------------------------------------------------------------------------
 908
 909 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 910         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 911         emlClearMem();
 912 }
 913
 914 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 915         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 916         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 917 }
 918
 919 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 920         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 921         byte_t buf[USB_CMD_DATA_SIZE];
 922         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 923
 924         LED_B_ON();
 925         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 926         LED_B_OFF();
 927 }
 928
 929 //-----------------------------------------------------------------------------
 930 // Load a card into the emulator memory
 931 //
 932 //-----------------------------------------------------------------------------
 933 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 934         uint8_t numSectors = arg0;
 935         uint8_t keyType = arg1;
 936         uint64_t ui64Key = 0;
 937         uint32_t cuid;
 938         struct Crypto1State mpcs = {0, 0};
 939         struct Crypto1State *pcs;
 940         pcs = &mpcs;
 941
 942         // variables
 943         byte_t dataoutbuf[16];
 944         byte_t dataoutbuf2[16];
 945         uint8_t uid[10];
 946
 947         LED_A_ON();
 948         LED_B_OFF();
 949         LED_C_OFF();
 950         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 951
 952         clear_trace();
 953         set_tracing(false);
 954
 955         bool isOK = true;
 956
 957         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 958                 isOK = false;
 959                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 960         }
 961
 962         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 963                 ui64Key = emlGetKey(sectorNo, keyType);
 964                 if (sectorNo == 0){
 965                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 966                                 isOK = false;
 967                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 968                                 break;
 969                         }
 970                 } else {
 971                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 972                                 isOK = false;
 973                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 974                                 break;
 975                         }
 976                 }
 977
 978                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 979                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 980                                 isOK = false;
 981                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 982                                 break;
 983                         };
 984                         if (isOK) {
 985                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 986                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 987                                 } else {        // sector trailer, keep the keys, set only the AC
 988                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 989                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 990                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 991                                 }
 992                         }
 993                 }
 994
 995         }
 996
 997         if(mifare_classic_halt(pcs, cuid)) {
 998                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 999         };
1000
1001         //  ----------------------------- crypto1 destroy
1002         crypto1_destroy(pcs);
1003
1004         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1005         LEDsoff();
1006
1007         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1008
1009 }
1010
1011
1012 //-----------------------------------------------------------------------------
1013 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1014 //
1015 //-----------------------------------------------------------------------------
1016 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1017
1018   // params
1019         uint8_t needWipe = arg0;
1020         // bit 0 - need get UID
1021         // bit 1 - need wupC
1022         // bit 2 - need HALT after sequence
1023         // bit 3 - need init FPGA and field before sequence
1024         // bit 4 - need reset FPGA and LED
1025         uint8_t workFlags = arg1;
1026         uint8_t blockNo = arg2;
1027
1028         // card commands
1029         uint8_t wupC1[]       = { 0x40 };
1030         uint8_t wupC2[]       = { 0x43 };
1031         uint8_t wipeC[]       = { 0x41 };
1032
1033         // variables
1034         byte_t isOK = 0;
1035         uint8_t uid[10] = {0x00};
1036         uint8_t d_block[18] = {0x00};
1037         uint32_t cuid;
1038
1039         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1040         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1041
1042         // reset FPGA and LED
1043         if (workFlags & 0x08) {
1044                 LED_A_ON();
1045                 LED_B_OFF();
1046                 LED_C_OFF();
1047                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1048
1049                 clear_trace();
1050                 set_tracing(TRUE);
1051         }
1052
1053         while (true) {
1054
1055                 // get UID from chip
1056                 if (workFlags & 0x01) {
1057                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
1058                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
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                 // reset chip
1069                 if (needWipe){
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(wipeC, sizeof(wipeC), NULL);
1077                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1078                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1079                                 break;
1080                         };
1081
1082                         if(mifare_classic_halt(NULL, cuid)) {
1083                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1084                                 break;
1085                         };
1086                 };
1087
1088                 // write block
1089                 if (workFlags & 0x02) {
1090                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1091                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1092                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1093                                 break;
1094                         };
1095
1096                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1097                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1098                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1099                                 break;
1100                         };
1101                 }
1102
1103                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1104                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1105                         break;
1106                 };
1107
1108                 memcpy(d_block, datain, 16);
1109                 AppendCrc14443a(d_block, 16);
1110
1111                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1112                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1113                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1114                         break;
1115                 };
1116
1117                 if (workFlags & 0x04) {
1118                         if (mifare_classic_halt(NULL, cuid)) {
1119                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1120                                 break;
1121                         };
1122                 }
1123
1124                 isOK = 1;
1125                 break;
1126         }
1127
1128         LED_B_ON();
1129         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1130         LED_B_OFF();
1131
1132         if ((workFlags & 0x10) || (!isOK)) {
1133                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1134                 LEDsoff();
1135         }
1136 }
1137
1138
1139 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1140
1141   // params
1142         // bit 1 - need wupC
1143         // bit 2 - need HALT after sequence
1144         // bit 3 - need init FPGA and field before sequence
1145         // bit 4 - need reset FPGA and LED
1146         // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1147         uint8_t workFlags = arg0;
1148         uint8_t blockNo = arg2;
1149
1150         // card commands
1151         uint8_t wupC1[]       = { 0x40 };
1152         uint8_t wupC2[]       = { 0x43 };
1153
1154         // variables
1155         byte_t isOK = 0;
1156         uint8_t data[18] = {0x00};
1157         uint32_t cuid = 0;
1158
1159         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1160         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1161
1162         if (workFlags & 0x08) {
1163                 LED_A_ON();
1164                 LED_B_OFF();
1165                 LED_C_OFF();
1166                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1167
1168                 clear_trace();
1169                 set_tracing(TRUE);
1170         }
1171
1172         while (true) {
1173                 if (workFlags & 0x02) {
1174                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1175                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1176                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1177                                 break;
1178                         };
1179
1180                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1181                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1182                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1183                                 break;
1184                         };
1185                 }
1186
1187                 // read block
1188                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1189                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1190                         break;
1191                 };
1192                 memcpy(data, receivedAnswer, 18);
1193
1194                 if (workFlags & 0x04) {
1195                         if (mifare_classic_halt(NULL, cuid)) {
1196                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1197                                 break;
1198                         };
1199                 }
1200
1201                 isOK = 1;
1202                 break;
1203         }
1204
1205         LED_B_ON();
1206         if (workFlags & 0x20) {
1207                 if (isOK)
1208                         memcpy(datain, data, 18);
1209         }
1210         else
1211                 cmd_send(CMD_ACK,isOK,0,0,data,18);
1212         LED_B_OFF();
1213
1214         if ((workFlags & 0x10) || (!isOK)) {
1215                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1216                 LEDsoff();
1217         }
1218 }
1219
1220 void MifareCIdent(){
1221
1222         // card commands
1223         uint8_t wupC1[]       = { 0x40 };
1224         uint8_t wupC2[]       = { 0x43 };
1225
1226         // variables
1227         byte_t isOK = 1;
1228
1229         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1230         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1231
1232         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1233         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1234                 isOK = 0;
1235         };
1236
1237         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1238         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1239                 isOK = 0;
1240         };
1241
1242         if (mifare_classic_halt(NULL, 0)) {
1243                 isOK = 0;
1244         };
1245
1246         cmd_send(CMD_ACK,isOK,0,0,0,0);
1247 }
1248
1249 //
1250 // DESFIRE
1251 //
1252
1253 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1254
1255         byte_t dataout[11] = {0x00};
1256         uint8_t uid[10] = {0x00};
1257         uint32_t cuid;
1258
1259         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1260         clear_trace();
1261
1262         int len = iso14443a_select_card(uid, NULL, &cuid);
1263         if(!len) {
1264                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1265                 OnError(1);
1266                 return;
1267         };
1268
1269         if(mifare_desfire_des_auth1(cuid, dataout)){
1270                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1271                 OnError(4);
1272                 return;
1273         }
1274
1275         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1276     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1277 }
1278
1279 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1280
1281         uint32_t cuid = arg0;
1282         uint8_t key[16] = {0x00};
1283         byte_t isOK = 0;
1284         byte_t dataout[12] = {0x00};
1285
1286         memcpy(key, datain, 16);
1287
1288         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1289
1290         if( isOK) {
1291                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1292                 OnError(4);
1293                 return;
1294         }
1295
1296         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1297
1298         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1299         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1300         LEDsoff();
1301 }
1302
1303 void OnSuccess(){
1304         pcb_blocknum = 0;
1305         ReaderTransmit(deselect_cmd, 3 , NULL);
1306         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1307         LEDsoff();
1308 }
1309
1310 void OnError(uint8_t reason){
1311         pcb_blocknum = 0;
1312         ReaderTransmit(deselect_cmd, 3 , NULL);
1313         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1314         cmd_send(CMD_ACK,0,reason,0,0,0);
1315         LEDsoff();
1316 }