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 #include "protocols.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         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  44
  45         clear_trace();
  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
  95         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  96
  97         clear_trace();
  98
  99         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 100                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 101                 OnError(0);
 102                 return;
 103         };
 104
 105         if(!mifare_ultra_auth(keybytes)){
 106                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 107                 OnError(1);
 108                 return;
 109         }
 110
 111         if (turnOffField) {
 112                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 113                 LEDsoff();
 114         }
 115         cmd_send(CMD_ACK,1,0,0,0,0);
 116 }
 117
 118 // Arg0 = BlockNo,
 119 // Arg1 = UsePwd bool
 120 // datain = PWD bytes,
 121 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 122 {
 123         uint8_t blockNo = arg0;
 124         byte_t dataout[16] = {0x00};
 125         bool useKey = (arg1 == 1); //UL_C
 126         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 127
 128         LEDsoff();
 129         LED_A_ON();
 130         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 131
 132         clear_trace();
 133
 134         int len = iso14443a_select_card(NULL, NULL, NULL);
 135         if(!len) {
 136                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 137                 OnError(1);
 138                 return;
 139         }
 140
 141         // UL-C authentication
 142         if ( useKey ) {
 143                 uint8_t key[16] = {0x00};
 144                 memcpy(key, datain, sizeof(key) );
 145
 146                 if ( !mifare_ultra_auth(key) ) {
 147                         OnError(1);
 148                         return;
 149                 }
 150         }
 151
 152         // UL-EV1 / NTAG authentication
 153         if ( usePwd ) {
 154                 uint8_t pwd[4] = {0x00};
 155                 memcpy(pwd, datain, 4);
 156                 uint8_t pack[4] = {0,0,0,0};
 157                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 158                         OnError(1);
 159                         return;
 160                 }
 161         }
 162
 163         if( mifare_ultra_readblock(blockNo, dataout) ) {
 164                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 165                 OnError(2);
 166                 return;
 167         }
 168
 169         if( mifare_ultra_halt() ) {
 170                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 171                 OnError(3);
 172                 return;
 173         }
 174
 175     cmd_send(CMD_ACK,1,0,0,dataout,16);
 176         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 177         LEDsoff();
 178 }
 179
 180 //-----------------------------------------------------------------------------
 181 // Select, Authenticate, Read a MIFARE tag.
 182 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 183 //-----------------------------------------------------------------------------
 184 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 185 {
 186   // params
 187         uint8_t sectorNo = arg0;
 188         uint8_t keyType = arg1;
 189         uint64_t ui64Key = 0;
 190         ui64Key = bytes_to_num(datain, 6);
 191
 192         // variables
 193         byte_t isOK = 0;
 194         byte_t dataoutbuf[16 * 16];
 195         uint8_t uid[10];
 196         uint32_t cuid;
 197         struct Crypto1State mpcs = {0, 0};
 198         struct Crypto1State *pcs;
 199         pcs = &mpcs;
 200
 201         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 202
 203         clear_trace();
 204
 205         LED_A_ON();
 206         LED_B_OFF();
 207         LED_C_OFF();
 208
 209         isOK = 1;
 210         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 211                 isOK = 0;
 212                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 213         }
 214
 215
 216         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 217                 isOK = 0;
 218                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 219         }
 220
 221         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 222                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 223                         isOK = 0;
 224                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 225                         break;
 226                 }
 227         }
 228
 229         if(mifare_classic_halt(pcs, cuid)) {
 230                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 231         }
 232
 233         //  ----------------------------- crypto1 destroy
 234         crypto1_destroy(pcs);
 235
 236         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 237
 238         LED_B_ON();
 239         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 240         LED_B_OFF();
 241
 242         // Thats it...
 243         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 244         LEDsoff();
 245 }
 246
 247 // arg0 = blockNo (start)
 248 // arg1 = Pages (number of blocks)
 249 // arg2 = useKey
 250 // datain = KEY bytes
 251 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 252 {
 253         LEDsoff();
 254         LED_A_ON();
 255         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 256
 257         // free eventually allocated BigBuf memory
 258         BigBuf_free();
 259         clear_trace();
 260
 261         // params
 262         uint8_t blockNo = arg0;
 263         uint16_t blocks = arg1;
 264         bool useKey = (arg2 == 1); //UL_C
 265         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 266         uint32_t countblocks = 0;
 267         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 268         if (dataout == NULL){
 269                 Dbprintf("out of memory");
 270                 OnError(1);
 271                 return;
 272         }
 273
 274         int len = iso14443a_select_card(NULL, NULL, NULL);
 275         if (!len) {
 276                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 277                 OnError(1);
 278                 return;
 279         }
 280
 281         // UL-C authentication
 282         if ( useKey ) {
 283                 uint8_t key[16] = {0x00};
 284                 memcpy(key, datain, sizeof(key) );
 285
 286                 if ( !mifare_ultra_auth(key) ) {
 287                         OnError(1);
 288                         return;
 289                 }
 290         }
 291
 292         // UL-EV1 / NTAG authentication
 293         if (usePwd) {
 294                 uint8_t pwd[4] = {0x00};
 295                 memcpy(pwd, datain, sizeof(pwd));
 296                 uint8_t pack[4] = {0,0,0,0};
 297
 298                 if (!mifare_ul_ev1_auth(pwd, pack)){
 299                         OnError(1);
 300                         return;
 301                 }
 302         }
 303
 304         for (int i = 0; i < blocks; i++){
 305                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 306                         Dbprintf("Data exceeds buffer!!");
 307                         break;
 308                 }
 309
 310                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 311
 312                 if (len) {
 313                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 314                         // if no blocks read - error out
 315                         if (i==0){
 316                                 OnError(2);
 317                         return;
 318                         } else {
 319                                 //stop at last successful read block and return what we got
 320                                 break;
 321                         }
 322                 } else {
 323                         countblocks++;
 324                 }
 325         }
 326
 327         len = mifare_ultra_halt();
 328         if (len) {
 329                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 330                 OnError(3);
 331                 return;
 332         }
 333
 334         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 335
 336         countblocks *= 4;
 337
 338         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 339         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 340         LEDsoff();
 341         BigBuf_free();
 342 }
 343
 344 //-----------------------------------------------------------------------------
 345 // Select, Authenticate, Write a MIFARE tag.
 346 // read block
 347 //-----------------------------------------------------------------------------
 348 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 349 {
 350         // params
 351         uint8_t blockNo = arg0;
 352         uint8_t keyType = arg1;
 353         uint64_t ui64Key = 0;
 354         byte_t blockdata[16];
 355
 356         ui64Key = bytes_to_num(datain, 6);
 357         memcpy(blockdata, datain + 10, 16);
 358
 359         // variables
 360         byte_t isOK = 0;
 361         uint8_t uid[10];
 362         uint32_t cuid;
 363         struct Crypto1State mpcs = {0, 0};
 364         struct Crypto1State *pcs;
 365         pcs = &mpcs;
 366
 367         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 368
 369         clear_trace();
 370
 371         LED_A_ON();
 372         LED_B_OFF();
 373         LED_C_OFF();
 374
 375         while (true) {
 376                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 377                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 378                         break;
 379                 };
 380
 381                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 382                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 383                         break;
 384                 };
 385
 386                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 387                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 388                         break;
 389                 };
 390
 391                 if(mifare_classic_halt(pcs, cuid)) {
 392                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 393                         break;
 394                 };
 395
 396                 isOK = 1;
 397                 break;
 398         }
 399
 400         //  ----------------------------- crypto1 destroy
 401         crypto1_destroy(pcs);
 402
 403         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 404
 405         LED_B_ON();
 406         cmd_send(CMD_ACK,isOK,0,0,0,0);
 407         LED_B_OFF();
 408
 409
 410         // Thats it...
 411         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 412         LEDsoff();
 413 }
 414
 415 /* // Command not needed but left for future testing
 416 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 417 {
 418         uint8_t blockNo = arg0;
 419         byte_t blockdata[16] = {0x00};
 420
 421         memcpy(blockdata, datain, 16);
 422
 423         uint8_t uid[10] = {0x00};
 424
 425         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 426
 427         clear_trace();
 428         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 429
 430         if(!iso14443a_select_card(uid, NULL, NULL)) {
 431                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 432                 OnError(0);
 433                 return;
 434         };
 435
 436         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 437                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 438                 OnError(0);
 439                 return; };
 440
 441         if(mifare_ultra_halt()) {
 442                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 443                 OnError(0);
 444                 return;
 445         };
 446
 447         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 448
 449         cmd_send(CMD_ACK,1,0,0,0,0);
 450         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 451         LEDsoff();
 452 }
 453 */
 454
 455 // Arg0   : Block to write to.
 456 // Arg1   : 0 = use no authentication.
 457 //          1 = use 0x1A authentication.
 458 //          2 = use 0x1B authentication.
 459 // datain : 4 first bytes is data to be written.
 460 //        : 4/16 next bytes is authentication key.
 461 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 462 {
 463         uint8_t blockNo = arg0;
 464         bool useKey = (arg1 == 1); //UL_C
 465         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 466         byte_t blockdata[4] = {0x00};
 467
 468         memcpy(blockdata, datain,4);
 469
 470         LEDsoff();
 471         LED_A_ON();
 472         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 473
 474         clear_trace();
 475
 476         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 477                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 478                 OnError(0);
 479                 return;
 480         };
 481
 482         // UL-C authentication
 483         if ( useKey ) {
 484                 uint8_t key[16] = {0x00};
 485                 memcpy(key, datain+4, sizeof(key) );
 486
 487                 if ( !mifare_ultra_auth(key) ) {
 488                         OnError(1);
 489                         return;
 490                 }
 491         }
 492
 493         // UL-EV1 / NTAG authentication
 494         if (usePwd) {
 495                 uint8_t pwd[4] = {0x00};
 496                 memcpy(pwd, datain+4, 4);
 497                 uint8_t pack[4] = {0,0,0,0};
 498                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 499                         OnError(1);
 500                         return;
 501                 }
 502         }
 503
 504         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 505                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 506                 OnError(0);
 507                 return;
 508         };
 509
 510         if(mifare_ultra_halt()) {
 511                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 512                 OnError(0);
 513                 return;
 514         };
 515
 516         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 517
 518         cmd_send(CMD_ACK,1,0,0,0,0);
 519         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 520         LEDsoff();
 521 }
 522
 523 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 524
 525         uint8_t pwd[16] = {0x00};
 526         byte_t blockdata[4] = {0x00};
 527
 528         memcpy(pwd, datain, 16);
 529
 530         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 531         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 532
 533         clear_trace();
 534
 535         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 536                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 537                 OnError(0);
 538                 return;
 539         };
 540
 541         blockdata[0] = pwd[7];
 542         blockdata[1] = pwd[6];
 543         blockdata[2] = pwd[5];
 544         blockdata[3] = pwd[4];
 545         if(mifare_ultra_writeblock( 44, blockdata)) {
 546                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 547                 OnError(44);
 548                 return;
 549         };
 550
 551         blockdata[0] = pwd[3];
 552         blockdata[1] = pwd[2];
 553         blockdata[2] = pwd[1];
 554         blockdata[3] = pwd[0];
 555         if(mifare_ultra_writeblock( 45, blockdata)) {
 556                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 557                 OnError(45);
 558                 return;
 559         };
 560
 561         blockdata[0] = pwd[15];
 562         blockdata[1] = pwd[14];
 563         blockdata[2] = pwd[13];
 564         blockdata[3] = pwd[12];
 565         if(mifare_ultra_writeblock( 46, blockdata)) {
 566                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 567                 OnError(46);
 568                 return;
 569         };
 570
 571         blockdata[0] = pwd[11];
 572         blockdata[1] = pwd[10];
 573         blockdata[2] = pwd[9];
 574         blockdata[3] = pwd[8];
 575         if(mifare_ultra_writeblock( 47, blockdata)) {
 576                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 577                 OnError(47);
 578                 return;
 579         };
 580
 581         if(mifare_ultra_halt()) {
 582                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 583                 OnError(0);
 584                 return;
 585         };
 586
 587         cmd_send(CMD_ACK,1,0,0,0,0);
 588         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 589         LEDsoff();
 590 }
 591
 592 // Return 1 if the nonce is invalid else return 0
 593 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 594         return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 595         (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 596         (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 597 }
 598
 599
 600 //-----------------------------------------------------------------------------
 601 // MIFARE nested authentication.
 602 //
 603 //-----------------------------------------------------------------------------
 604 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 605 {
 606         // params
 607         uint8_t blockNo = arg0 & 0xff;
 608         uint8_t keyType = (arg0 >> 8) & 0xff;
 609         uint8_t targetBlockNo = arg1 & 0xff;
 610         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 611         uint64_t ui64Key = 0;
 612
 613         ui64Key = bytes_to_num(datain, 6);
 614
 615         // variables
 616         uint16_t rtr, i, j, len;
 617         uint16_t davg;
 618         static uint16_t dmin, dmax;
 619         uint8_t uid[10];
 620         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 621         uint8_t par[1];
 622         uint32_t target_nt[2], target_ks[2];
 623
 624         uint8_t par_array[4];
 625         uint16_t ncount = 0;
 626         struct Crypto1State mpcs = {0, 0};
 627         struct Crypto1State *pcs;
 628         pcs = &mpcs;
 629         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 630
 631         uint32_t auth1_time, auth2_time;
 632         static uint16_t delta_time;
 633
 634         LED_A_ON();
 635         LED_C_OFF();
 636         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 637
 638         // free eventually allocated BigBuf memory
 639         BigBuf_free();
 640
 641         if (calibrate) clear_trace();
 642         set_tracing(true);
 643
 644         // statistics on nonce distance
 645         int16_t isOK = 0;
 646         #define NESTED_MAX_TRIES 12
 647         uint16_t unsuccessfull_tries = 0;
 648         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 649                 LED_B_ON();
 650                 WDT_HIT();
 651
 652                 davg = dmax = 0;
 653                 dmin = 2000;
 654                 delta_time = 0;
 655
 656                 for (rtr = 0; rtr < 17; rtr++) {
 657
 658                         // Test if the action was cancelled
 659                         if(BUTTON_PRESS()) {
 660                                 isOK = -2;
 661                                 break;
 662                         }
 663
 664                         // prepare next select. No need to power down the card.
 665                         if(mifare_classic_halt(pcs, cuid)) {
 666                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 667                                 rtr--;
 668                                 continue;
 669                         }
 670
 671                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 672                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 673                                 rtr--;
 674                                 continue;
 675                         };
 676
 677                         auth1_time = 0;
 678                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 679                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 680                                 rtr--;
 681                                 continue;
 682                         };
 683
 684                         if (delta_time) {
 685                                 auth2_time = auth1_time + delta_time;
 686                         } else {
 687                                 auth2_time = 0;
 688                         }
 689                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 690                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 691                                 rtr--;
 692                                 continue;
 693                         };
 694
 695                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 696                         for (i = 101; i < 1200; i++) {
 697                                 nttmp = prng_successor(nttmp, 1);
 698                                 if (nttmp == nt2) break;
 699                         }
 700
 701                         if (i != 1200) {
 702                                 if (rtr != 0) {
 703                                         davg += i;
 704                                         dmin = MIN(dmin, i);
 705                                         dmax = MAX(dmax, i);
 706                                 }
 707                                 else {
 708                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 709                                 }
 710                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 711                         } else {
 712                                 unsuccessfull_tries++;
 713                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 714                                         isOK = -3;
 715                                 }
 716                         }
 717                 }
 718
 719                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 720
 721                 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);
 722
 723                 dmin = davg - 2;
 724                 dmax = davg + 2;
 725
 726                 LED_B_OFF();
 727         }
 728 //  -------------------------------------------------------------------------------------------------
 729
 730         LED_C_ON();
 731
 732         //  get crypted nonces for target sector
 733         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 734
 735                 target_nt[i] = 0;
 736                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 737
 738                         // prepare next select. No need to power down the card.
 739                         if(mifare_classic_halt(pcs, cuid)) {
 740                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 741                                 continue;
 742                         }
 743
 744                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 745                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 746                                 continue;
 747                         };
 748
 749                         auth1_time = 0;
 750                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 751                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 752                                 continue;
 753                         };
 754
 755                         // nested authentication
 756                         auth2_time = auth1_time + delta_time;
 757                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 758                         if (len != 4) {
 759                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 760                                 continue;
 761                         };
 762
 763                         nt2 = bytes_to_num(receivedAnswer, 4);
 764                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 765
 766                         // Parity validity check
 767                         for (j = 0; j < 4; j++) {
 768                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 769                         }
 770
 771                         ncount = 0;
 772                         nttest = prng_successor(nt1, dmin - 1);
 773                         for (j = dmin; j < dmax + 1; j++) {
 774                                 nttest = prng_successor(nttest, 1);
 775                                 ks1 = nt2 ^ nttest;
 776
 777                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 778                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 779                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 780                                                 target_nt[i] = 0;
 781                                                 break;
 782                                         }
 783                                         target_nt[i] = nttest;
 784                                         target_ks[i] = ks1;
 785                                         ncount++;
 786                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 787                                                 target_nt[i] = 0;
 788                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 789                                                 break;
 790                                         }
 791                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 792                                 }
 793                         }
 794                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 795                 }
 796         }
 797
 798         LED_C_OFF();
 799
 800         //  ----------------------------- crypto1 destroy
 801         crypto1_destroy(pcs);
 802
 803         byte_t buf[4 + 4 * 4];
 804         memcpy(buf, &cuid, 4);
 805         memcpy(buf+4, &target_nt[0], 4);
 806         memcpy(buf+8, &target_ks[0], 4);
 807         memcpy(buf+12, &target_nt[1], 4);
 808         memcpy(buf+16, &target_ks[1], 4);
 809
 810         LED_B_ON();
 811         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 812         LED_B_OFF();
 813
 814         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 815
 816         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 817         LEDsoff();
 818         set_tracing(FALSE);
 819 }
 820
 821 //-----------------------------------------------------------------------------
 822 // MIFARE check keys. key count up to 85.
 823 //
 824 //-----------------------------------------------------------------------------
 825 void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 826 {
 827   // params
 828         uint8_t blockNo = arg0 & 0xff;
 829         uint8_t keyType = (arg0 >> 8) & 0xff;
 830         bool clearTrace = arg1;
 831         uint8_t keyCount = arg2;
 832         uint64_t ui64Key = 0;
 833
 834         // variables
 835         int i;
 836         byte_t isOK = 0;
 837         uint8_t uid[10];
 838         uint32_t cuid;
 839         struct Crypto1State mpcs = {0, 0};
 840         struct Crypto1State *pcs;
 841         pcs = &mpcs;
 842
 843         // clear debug level
 844         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 845         MF_DBGLEVEL = MF_DBG_NONE;
 846
 847         LED_A_ON();
 848         LED_B_OFF();
 849         LED_C_OFF();
 850         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 851
 852         if (clearTrace) clear_trace();
 853         set_tracing(TRUE);
 854
 855         for (i = 0; i < keyCount; i++) {
 856                 if(mifare_classic_halt(pcs, cuid)) {
 857                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 858                 }
 859
 860                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 861                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 862                         break;
 863                 };
 864
 865                 ui64Key = bytes_to_num(datain + i * 6, 6);
 866                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 867                         continue;
 868                 };
 869
 870                 isOK = 1;
 871                 break;
 872         }
 873
 874         //  ----------------------------- crypto1 destroy
 875         crypto1_destroy(pcs);
 876
 877         LED_B_ON();
 878     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 879         LED_B_OFF();
 880
 881         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 882         LEDsoff();
 883         set_tracing(FALSE);
 884
 885         // restore debug level
 886         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 887 }
 888
 889 //-----------------------------------------------------------------------------
 890 // MIFARE commands set debug level
 891 //
 892 //-----------------------------------------------------------------------------
 893 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 894         MF_DBGLEVEL = arg0;
 895         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 896 }
 897
 898 //-----------------------------------------------------------------------------
 899 // Work with emulator memory
 900 //
 901 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
 902 // involved in dealing with emulator memory. But if it is called later, it might
 903 // destroy the Emulator Memory.
 904 //-----------------------------------------------------------------------------
 905
 906 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 907         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 908         emlClearMem();
 909 }
 910
 911 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 912         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 913         //emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 914         emlSetMem_xt(datain, arg0, arg1, arg2); // data, block num, blocks count, block byte width
 915 }
 916
 917 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 918         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 919         byte_t buf[USB_CMD_DATA_SIZE];
 920         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 921
 922         LED_B_ON();
 923         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 924         LED_B_OFF();
 925 }
 926
 927 //-----------------------------------------------------------------------------
 928 // Load a card into the emulator memory
 929 //
 930 //-----------------------------------------------------------------------------
 931 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 932         uint8_t numSectors = arg0;
 933         uint8_t keyType = arg1;
 934         uint64_t ui64Key = 0;
 935         uint32_t cuid;
 936         struct Crypto1State mpcs = {0, 0};
 937         struct Crypto1State *pcs;
 938         pcs = &mpcs;
 939
 940         // variables
 941         byte_t dataoutbuf[16];
 942         byte_t dataoutbuf2[16];
 943         uint8_t uid[10];
 944
 945         LED_A_ON();
 946         LED_B_OFF();
 947         LED_C_OFF();
 948         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 949
 950         clear_trace();
 951         set_tracing(TRUE);
 952
 953         bool isOK = true;
 954
 955         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 956                 isOK = false;
 957                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 958         }
 959
 960         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 961                 ui64Key = emlGetKey(sectorNo, keyType);
 962                 if (sectorNo == 0){
 963                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 964                                 isOK = false;
 965                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 966                                 break;
 967                         }
 968                 } else {
 969                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 970                                 isOK = false;
 971                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 972                                 break;
 973                         }
 974                 }
 975
 976                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 977                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 978                                 isOK = false;
 979                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 980                                 break;
 981                         };
 982                         if (isOK) {
 983                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 984                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 985                                 } else {        // sector trailer, keep the keys, set only the AC
 986                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 987                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 988                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 989                                 }
 990                         }
 991                 }
 992
 993         }
 994
 995         if(mifare_classic_halt(pcs, cuid)) {
 996                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 997         };
 998
 999         //  ----------------------------- crypto1 destroy
1000         crypto1_destroy(pcs);
1001
1002         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1003         LEDsoff();
1004
1005         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1006
1007         set_tracing(FALSE);
1008 }
1009
1010
1011 //-----------------------------------------------------------------------------
1012 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1013 //
1014 // PARAMS - workFlags
1015 // bit 0 - need get UID
1016 // bit 1 - need wupC
1017 // bit 2 - need HALT after sequence
1018 // bit 3 - need turn on FPGA before sequence
1019 // bit 4 - need turn off FPGA
1020 // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1021 // bit 6 - wipe tag.
1022 //-----------------------------------------------------------------------------
1023 // magic uid card generation 1 commands
1024 uint8_t wupC1[] = { MIFARE_MAGICWUPC1 };
1025 uint8_t wupC2[] = { MIFARE_MAGICWUPC2 };
1026 uint8_t wipeC[] = { MIFARE_MAGICWIPEC };
1027
1028 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1029
1030         // params
1031         uint8_t workFlags = arg0;
1032         uint8_t blockNo = arg1;
1033
1034         Dbprintf("ICE :: CSetBlocks Flags %02x", workFlags);
1035
1036         // variables
1037         uint8_t uid[10] = {0x00};
1038         uint8_t data[18] = {0x00};
1039         uint32_t cuid;
1040
1041         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1042         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1043
1044         if (workFlags & MAGIC_INIT) {
1045                 LED_A_ON();
1046                 LED_B_OFF();
1047                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1048                 clear_trace();
1049                 set_tracing(TRUE);
1050         }
1051
1052         // read UID and return to client
1053         if (workFlags & MAGIC_UID) {
1054                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
1055                         if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("Can't select card");
1056                         OnErrorMagic(MAGIC_UID);
1057                 };
1058         };
1059
1060         // wipe tag, fill it with zeros
1061         if (workFlags & MAGIC_WIPE){
1062                 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1063                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1064                         if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wupC1 error");
1065                         OnErrorMagic(MAGIC_WIPE);
1066                 };
1067
1068                 ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1069                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1070                         if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wipeC error");
1071                         OnErrorMagic(MAGIC_WIPE);
1072                 };
1073         };
1074
1075         // write block
1076         if (workFlags & MAGIC_WUPC) {
1077                 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1078                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1079                         if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wupC1 error");
1080                         OnErrorMagic(MAGIC_WUPC);
1081                 };
1082
1083                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1084                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1085                         if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wupC2 error");
1086                         OnErrorMagic(MAGIC_WUPC);
1087                 };
1088         }
1089
1090         if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1091                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("write block send command error");
1092                 OnErrorMagic(4);
1093         };
1094
1095         memcpy(data, datain, 16);
1096         AppendCrc14443a(data, 16);
1097
1098         ReaderTransmit(data, sizeof(data), NULL);
1099         if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1100                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("write block send data error");
1101                 OnErrorMagic(0);
1102         };
1103
1104         if (workFlags & MAGIC_OFF)
1105                 mifare_classic_halt_ex(NULL);
1106
1107         LED_B_ON();
1108         // check if uid is cuid?
1109         cmd_send(CMD_ACK,1,0,0,uid,sizeof(uid));
1110         LED_B_OFF();
1111
1112         if (workFlags & MAGIC_OFF)
1113                 OnSuccessMagic();
1114 }
1115
1116 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1117
1118         uint8_t workFlags = arg0;
1119         uint8_t blockNo = arg1;
1120
1121         // variables
1122         uint8_t data[MAX_MIFARE_FRAME_SIZE];
1123         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1124         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1125
1126         memset(data, 0x00, sizeof(data));
1127
1128         if (workFlags & MAGIC_INIT) {
1129                 LED_A_ON();
1130                 LED_B_OFF();
1131                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1132                 clear_trace();
1133                 set_tracing(TRUE);
1134         }
1135
1136         if (workFlags & MAGIC_WUPC) {
1137                 ReaderTransmitBitsPar(wupC1,7,0, NULL);
1138                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1139                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1140                         OnErrorMagic(MAGIC_WUPC);
1141                 };
1142
1143                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1144                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1145                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1146                         OnErrorMagic(MAGIC_WUPC);
1147                 };
1148         }
1149
1150         // read block
1151         if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1152                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("read block send command error");
1153                 OnErrorMagic(0);
1154         };
1155
1156         memcpy(data, receivedAnswer, sizeof(data));
1157
1158         // send HALT
1159         if (workFlags & MAGIC_HALT)
1160                 mifare_classic_halt_ex(NULL);
1161
1162         LED_B_ON();
1163
1164         // if MAGIC_DATAIN, the data stays on device side.
1165         if (workFlags & MAGIC_DATAIN)
1166                 memcpy(datain, data, sizeof(data));
1167         else
1168                 cmd_send(CMD_ACK,1,0,0,data,sizeof(data));
1169
1170         LED_B_OFF();
1171
1172         if (workFlags & MAGIC_OFF)
1173                 OnSuccessMagic();
1174 }
1175
1176 void MifareCIdent(){
1177
1178         // variables
1179         byte_t isOK = 1;
1180         uint8_t receivedAnswer[1];
1181         uint8_t receivedAnswerPar[1];
1182
1183         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1184         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1185                 isOK = 0;
1186         };
1187
1188         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1189         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1190                 isOK = 0;
1191         };
1192
1193         // removed the if,  since some magic tags misbehavies and send an answer to it.
1194         mifare_classic_halt(NULL, 0);
1195         cmd_send(CMD_ACK,isOK,0,0,0,0);
1196 }
1197
1198 void OnSuccessMagic(){
1199         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1200         LEDsoff();
1201         set_tracing(FALSE);
1202 }
1203 void OnErrorMagic(uint8_t reason){
1204         //          ACK, ISOK, reason,0,0,0
1205         cmd_send(CMD_ACK,0,reason,0,0,0);
1206         OnSuccessMagic();
1207 }
1208
1209 void MifareCollectNonces(uint32_t arg0, uint32_t arg1){
1210 }
1211
1212 //
1213 // DESFIRE
1214 //
1215
1216 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1217
1218         byte_t dataout[11] = {0x00};
1219         uint8_t uid[10] = {0x00};
1220         uint32_t cuid = 0x00;
1221
1222         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1223         clear_trace();
1224
1225         int len = iso14443a_select_card(uid, NULL, &cuid);
1226         if(!len) {
1227                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1228                 OnError(1);
1229                 return;
1230         };
1231
1232         if(mifare_desfire_des_auth1(cuid, dataout)){
1233                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1234                 OnError(4);
1235                 return;
1236         }
1237
1238         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1239     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1240 }
1241
1242 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1243
1244         uint32_t cuid = arg0;
1245         uint8_t key[16] = {0x00};
1246         byte_t dataout[12] = {0x00};
1247         byte_t isOK = 0;
1248
1249         memcpy(key, datain, 16);
1250
1251         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1252
1253         if( isOK) {
1254             if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1255                 OnError(4);
1256                 return;
1257         }
1258
1259         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1260
1261         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1262         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1263         LEDsoff();
1264 }