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 "parity.h"
  20 #include "crc.h"
  21
  22 // the block number for the ISO14443-4 PCB
  23 uint8_t pcb_blocknum = 0;
  24 // Deselect card by sending a s-block. the crc is precalced for speed
  25 static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
  26
  27 //-----------------------------------------------------------------------------
  28 // Select, Authenticate, Read a MIFARE tag.
  29 // read block
  30 //-----------------------------------------------------------------------------
  31 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  32 {
  33   // params
  34         uint8_t blockNo = arg0;
  35         uint8_t keyType = arg1;
  36         uint64_t ui64Key = 0;
  37         ui64Key = bytes_to_num(datain, 6);
  38
  39         // variables
  40         byte_t isOK = 0;
  41         byte_t dataoutbuf[16];
  42         uint8_t uid[10];
  43         uint32_t cuid;
  44         struct Crypto1State mpcs = {0, 0};
  45         struct Crypto1State *pcs;
  46         pcs = &mpcs;
  47
  48         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  49
  50         clear_trace();
  51
  52         LED_A_ON();
  53         LED_B_OFF();
  54         LED_C_OFF();
  55
  56         while (true) {
  57                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
  58                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  59                         break;
  60                 };
  61
  62                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  63                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  64                         break;
  65                 };
  66
  67                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  68                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  69                         break;
  70                 };
  71
  72                 if(mifare_classic_halt(pcs, cuid)) {
  73                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  74                         break;
  75                 };
  76
  77                 isOK = 1;
  78                 break;
  79         }
  80
  81         //  ----------------------------- crypto1 destroy
  82         crypto1_destroy(pcs);
  83
  84         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  85
  86         LED_B_ON();
  87         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  88         LED_B_OFF();
  89
  90         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  91         LEDsoff();
  92 }
  93
  94 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  95
  96         bool turnOffField = (arg0 == 1);
  97
  98         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
  99
 100         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 101
 102         clear_trace();
 103
 104         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 105                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 106                 OnError(0);
 107                 return;
 108         };
 109
 110         if(!mifare_ultra_auth(keybytes)){
 111                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 112                 OnError(1);
 113                 return;
 114         }
 115
 116         if (turnOffField) {
 117                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 118                 LEDsoff();
 119         }
 120         cmd_send(CMD_ACK,1,0,0,0,0);
 121 }
 122
 123 // Arg0 = BlockNo,
 124 // Arg1 = UsePwd bool
 125 // datain = PWD bytes,
 126 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 127 {
 128         uint8_t blockNo = arg0;
 129         byte_t dataout[16] = {0x00};
 130         bool useKey = (arg1 == 1); //UL_C
 131         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 132
 133         LEDsoff();
 134         LED_A_ON();
 135         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 136
 137         clear_trace();
 138
 139         int len = iso14443a_select_card(NULL, NULL, NULL);
 140         if(!len) {
 141                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 142                 OnError(1);
 143                 return;
 144         }
 145
 146         // UL-C authentication
 147         if ( useKey ) {
 148                 uint8_t key[16] = {0x00};
 149                 memcpy(key, datain, sizeof(key) );
 150
 151                 if ( !mifare_ultra_auth(key) ) {
 152                         OnError(1);
 153                         return;
 154                 }
 155         }
 156
 157         // UL-EV1 / NTAG authentication
 158         if ( usePwd ) {
 159                 uint8_t pwd[4] = {0x00};
 160                 memcpy(pwd, datain, 4);
 161                 uint8_t pack[4] = {0,0,0,0};
 162                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 163                         OnError(1);
 164                         return;
 165                 }
 166         }
 167
 168         if( mifare_ultra_readblock(blockNo, dataout) ) {
 169                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 170                 OnError(2);
 171                 return;
 172         }
 173
 174         if( mifare_ultra_halt() ) {
 175                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 176                 OnError(3);
 177                 return;
 178         }
 179
 180         cmd_send(CMD_ACK,1,0,0,dataout,16);
 181         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 182         LEDsoff();
 183 }
 184
 185 //-----------------------------------------------------------------------------
 186 // Select, Authenticate, Read a MIFARE tag.
 187 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 188 //-----------------------------------------------------------------------------
 189 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 190 {
 191   // params
 192         uint8_t sectorNo = arg0;
 193         uint8_t keyType = arg1;
 194         uint64_t ui64Key = 0;
 195         ui64Key = bytes_to_num(datain, 6);
 196
 197         // variables
 198         byte_t isOK = 0;
 199         byte_t dataoutbuf[16 * 16];
 200         uint8_t uid[10];
 201         uint32_t cuid;
 202         struct Crypto1State mpcs = {0, 0};
 203         struct Crypto1State *pcs;
 204         pcs = &mpcs;
 205
 206         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 207
 208         clear_trace();
 209
 210         LED_A_ON();
 211         LED_B_OFF();
 212         LED_C_OFF();
 213
 214         isOK = 1;
 215         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 216                 isOK = 0;
 217                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 218         }
 219
 220
 221         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 222                 isOK = 0;
 223                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 224         }
 225
 226         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 227                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 228                         isOK = 0;
 229                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 230                         break;
 231                 }
 232         }
 233
 234         if(mifare_classic_halt(pcs, cuid)) {
 235                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 236         }
 237
 238         //  ----------------------------- crypto1 destroy
 239         crypto1_destroy(pcs);
 240
 241         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 242
 243         LED_B_ON();
 244         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 245         LED_B_OFF();
 246
 247         // Thats it...
 248         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 249         LEDsoff();
 250 }
 251
 252 // arg0 = blockNo (start)
 253 // arg1 = Pages (number of blocks)
 254 // arg2 = useKey
 255 // datain = KEY bytes
 256 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 257 {
 258         LEDsoff();
 259         LED_A_ON();
 260         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 261
 262         // free eventually allocated BigBuf memory
 263         BigBuf_free();
 264         clear_trace();
 265
 266         // params
 267         uint8_t blockNo = arg0;
 268         uint16_t blocks = arg1;
 269         bool useKey = (arg2 == 1); //UL_C
 270         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 271         uint32_t countblocks = 0;
 272         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 273         if (dataout == NULL){
 274                 Dbprintf("out of memory");
 275                 OnError(1);
 276                 return;
 277         }
 278
 279         int len = iso14443a_select_card(NULL, NULL, NULL);
 280         if (!len) {
 281                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 282                 OnError(1);
 283                 return;
 284         }
 285
 286         // UL-C authentication
 287         if ( useKey ) {
 288                 uint8_t key[16] = {0x00};
 289                 memcpy(key, datain, sizeof(key) );
 290
 291                 if ( !mifare_ultra_auth(key) ) {
 292                         OnError(1);
 293                         return;
 294                 }
 295         }
 296
 297         // UL-EV1 / NTAG authentication
 298         if (usePwd) {
 299                 uint8_t pwd[4] = {0x00};
 300                 memcpy(pwd, datain, sizeof(pwd));
 301                 uint8_t pack[4] = {0,0,0,0};
 302
 303                 if (!mifare_ul_ev1_auth(pwd, pack)){
 304                         OnError(1);
 305                         return;
 306                 }
 307         }
 308
 309         for (int i = 0; i < blocks; i++){
 310                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 311                         Dbprintf("Data exceeds buffer!!");
 312                         break;
 313                 }
 314
 315                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 316
 317                 if (len) {
 318                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 319                         // if no blocks read - error out
 320                         if (i==0){
 321                                 OnError(2);
 322                                 return;
 323                         } else {
 324                                 //stop at last successful read block and return what we got
 325                                 break;
 326                         }
 327                 } else {
 328                         countblocks++;
 329                 }
 330         }
 331
 332         len = mifare_ultra_halt();
 333         if (len) {
 334                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 335                 OnError(3);
 336                 return;
 337         }
 338
 339         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 340
 341         countblocks *= 4;
 342
 343         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 344         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 345         LEDsoff();
 346         BigBuf_free();
 347 }
 348
 349 //-----------------------------------------------------------------------------
 350 // Select, Authenticate, Write a MIFARE tag.
 351 // read block
 352 //-----------------------------------------------------------------------------
 353 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 354 {
 355         // params
 356         uint8_t blockNo = arg0;
 357         uint8_t keyType = arg1;
 358         uint64_t ui64Key = 0;
 359         byte_t blockdata[16];
 360
 361         ui64Key = bytes_to_num(datain, 6);
 362         memcpy(blockdata, datain + 10, 16);
 363
 364         // variables
 365         byte_t isOK = 0;
 366         uint8_t uid[10];
 367         uint32_t cuid;
 368         struct Crypto1State mpcs = {0, 0};
 369         struct Crypto1State *pcs;
 370         pcs = &mpcs;
 371
 372         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 373
 374         clear_trace();
 375
 376         LED_A_ON();
 377         LED_B_OFF();
 378         LED_C_OFF();
 379
 380         while (true) {
 381                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 382                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 383                         break;
 384                 };
 385
 386                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 387                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 388                         break;
 389                 };
 390
 391                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 392                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 393                         break;
 394                 };
 395
 396                 if(mifare_classic_halt(pcs, cuid)) {
 397                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 398                         break;
 399                 };
 400
 401                 isOK = 1;
 402                 break;
 403         }
 404
 405         //  ----------------------------- crypto1 destroy
 406         crypto1_destroy(pcs);
 407
 408         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 409
 410         LED_B_ON();
 411         cmd_send(CMD_ACK,isOK,0,0,0,0);
 412         LED_B_OFF();
 413
 414
 415         // Thats it...
 416         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 417         LEDsoff();
 418 }
 419
 420 /* // Command not needed but left for future testing
 421 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 422 {
 423         uint8_t blockNo = arg0;
 424         byte_t blockdata[16] = {0x00};
 425
 426         memcpy(blockdata, datain, 16);
 427
 428         uint8_t uid[10] = {0x00};
 429
 430         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 431
 432         clear_trace();
 433         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 434
 435         if(!iso14443a_select_card(uid, NULL, NULL)) {
 436                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 437                 OnError(0);
 438                 return;
 439         };
 440
 441         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 442                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 443                 OnError(0);
 444                 return; };
 445
 446         if(mifare_ultra_halt()) {
 447                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 448                 OnError(0);
 449                 return;
 450         };
 451
 452         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 453
 454         cmd_send(CMD_ACK,1,0,0,0,0);
 455         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 456         LEDsoff();
 457 }
 458 */
 459
 460 // Arg0   : Block to write to.
 461 // Arg1   : 0 = use no authentication.
 462 //          1 = use 0x1A authentication.
 463 //          2 = use 0x1B authentication.
 464 // datain : 4 first bytes is data to be written.
 465 //        : 4/16 next bytes is authentication key.
 466 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 467 {
 468         uint8_t blockNo = arg0;
 469         bool useKey = (arg1 == 1); //UL_C
 470         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 471         byte_t blockdata[4] = {0x00};
 472
 473         memcpy(blockdata, datain,4);
 474
 475         LEDsoff();
 476         LED_A_ON();
 477         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 478
 479         clear_trace();
 480
 481         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 482                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 483                 OnError(0);
 484                 return;
 485         };
 486
 487         // UL-C authentication
 488         if ( useKey ) {
 489                 uint8_t key[16] = {0x00};
 490                 memcpy(key, datain+4, sizeof(key) );
 491
 492                 if ( !mifare_ultra_auth(key) ) {
 493                         OnError(1);
 494                         return;
 495                 }
 496         }
 497
 498         // UL-EV1 / NTAG authentication
 499         if (usePwd) {
 500                 uint8_t pwd[4] = {0x00};
 501                 memcpy(pwd, datain+4, 4);
 502                 uint8_t pack[4] = {0,0,0,0};
 503                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 504                         OnError(1);
 505                         return;
 506                 }
 507         }
 508
 509         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 510                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 511                 OnError(0);
 512                 return;
 513         };
 514
 515         if(mifare_ultra_halt()) {
 516                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 517                 OnError(0);
 518                 return;
 519         };
 520
 521         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 522
 523         cmd_send(CMD_ACK,1,0,0,0,0);
 524         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 525         LEDsoff();
 526 }
 527
 528 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 529
 530         uint8_t pwd[16] = {0x00};
 531         byte_t blockdata[4] = {0x00};
 532
 533         memcpy(pwd, datain, 16);
 534
 535         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 536         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 537
 538         clear_trace();
 539
 540         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 541                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 542                 OnError(0);
 543                 return;
 544         };
 545
 546         blockdata[0] = pwd[7];
 547         blockdata[1] = pwd[6];
 548         blockdata[2] = pwd[5];
 549         blockdata[3] = pwd[4];
 550         if(mifare_ultra_writeblock( 44, blockdata)) {
 551                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 552                 OnError(44);
 553                 return;
 554         };
 555
 556         blockdata[0] = pwd[3];
 557         blockdata[1] = pwd[2];
 558         blockdata[2] = pwd[1];
 559         blockdata[3] = pwd[0];
 560         if(mifare_ultra_writeblock( 45, blockdata)) {
 561                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 562                 OnError(45);
 563                 return;
 564         };
 565
 566         blockdata[0] = pwd[15];
 567         blockdata[1] = pwd[14];
 568         blockdata[2] = pwd[13];
 569         blockdata[3] = pwd[12];
 570         if(mifare_ultra_writeblock( 46, blockdata)) {
 571                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 572                 OnError(46);
 573                 return;
 574         };
 575
 576         blockdata[0] = pwd[11];
 577         blockdata[1] = pwd[10];
 578         blockdata[2] = pwd[9];
 579         blockdata[3] = pwd[8];
 580         if(mifare_ultra_writeblock( 47, blockdata)) {
 581                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 582                 OnError(47);
 583                 return;
 584         };
 585
 586         if(mifare_ultra_halt()) {
 587                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 588                 OnError(0);
 589                 return;
 590         };
 591
 592         cmd_send(CMD_ACK,1,0,0,0,0);
 593         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 594         LEDsoff();
 595 }
 596
 597 // Return 1 if the nonce is invalid else return 0
 598 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 599         return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 600         (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 601         (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 602 }
 603
 604
 605 //-----------------------------------------------------------------------------
 606 // MIFARE nested authentication.
 607 //
 608 //-----------------------------------------------------------------------------
 609 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 610 {
 611         // params
 612         uint8_t blockNo = arg0 & 0xff;
 613         uint8_t keyType = (arg0 >> 8) & 0xff;
 614         uint8_t targetBlockNo = arg1 & 0xff;
 615         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 616         uint64_t ui64Key = 0;
 617
 618         ui64Key = bytes_to_num(datain, 6);
 619
 620         // variables
 621         uint16_t rtr, i, j, len;
 622         uint16_t davg;
 623         static uint16_t dmin, dmax;
 624         uint8_t uid[10];
 625         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 626         uint8_t par[1];
 627         uint32_t target_nt[2], target_ks[2];
 628
 629         uint8_t par_array[4];
 630         uint16_t ncount = 0;
 631         struct Crypto1State mpcs = {0, 0};
 632         struct Crypto1State *pcs;
 633         pcs = &mpcs;
 634         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 635
 636         uint32_t auth1_time, auth2_time;
 637         static uint16_t delta_time;
 638
 639         LED_A_ON();
 640         LED_C_OFF();
 641         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 642
 643         // free eventually allocated BigBuf memory
 644         BigBuf_free();
 645
 646         if (calibrate) clear_trace();
 647         set_tracing(true);
 648
 649         // statistics on nonce distance
 650         int16_t isOK = 0;
 651         #define NESTED_MAX_TRIES 12
 652         uint16_t unsuccessfull_tries = 0;
 653         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 654                 LED_B_ON();
 655                 WDT_HIT();
 656
 657                 davg = dmax = 0;
 658                 dmin = 2000;
 659                 delta_time = 0;
 660
 661                 for (rtr = 0; rtr < 17; rtr++) {
 662
 663                         // Test if the action was cancelled
 664                         if(BUTTON_PRESS()) {
 665                                 isOK = -2;
 666                                 break;
 667                         }
 668
 669                         // prepare next select. No need to power down the card.
 670                         if(mifare_classic_halt(pcs, cuid)) {
 671                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 672                                 rtr--;
 673                                 continue;
 674                         }
 675
 676                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 677                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 678                                 rtr--;
 679                                 continue;
 680                         };
 681
 682                         auth1_time = 0;
 683                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 684                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 685                                 rtr--;
 686                                 continue;
 687                         };
 688
 689                         if (delta_time) {
 690                                 auth2_time = auth1_time + delta_time;
 691                         } else {
 692                                 auth2_time = 0;
 693                         }
 694                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 695                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 696                                 rtr--;
 697                                 continue;
 698                         };
 699
 700                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 701                         for (i = 101; i < 1200; i++) {
 702                                 nttmp = prng_successor(nttmp, 1);
 703                                 if (nttmp == nt2) break;
 704                         }
 705
 706                         if (i != 1200) {
 707                                 if (rtr != 0) {
 708                                         davg += i;
 709                                         dmin = MIN(dmin, i);
 710                                         dmax = MAX(dmax, i);
 711                                 }
 712                                 else {
 713                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 714                                 }
 715                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 716                         } else {
 717                                 unsuccessfull_tries++;
 718                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 719                                         isOK = -3;
 720                                 }
 721                         }
 722                 }
 723
 724                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 725
 726                 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);
 727
 728                 dmin = davg - 2;
 729                 dmax = davg + 2;
 730
 731                 LED_B_OFF();
 732
 733         }
 734         //  -------------------------------------------------------------------------------------------------
 735
 736         LED_C_ON();
 737
 738         //  get crypted nonces for target sector
 739         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 740
 741                 target_nt[i] = 0;
 742                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 743
 744                         // prepare next select. No need to power down the card.
 745                         if(mifare_classic_halt(pcs, cuid)) {
 746                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 747                                 continue;
 748                         }
 749
 750                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 751                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 752                                 continue;
 753                         };
 754
 755                         auth1_time = 0;
 756                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 757                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 758                                 continue;
 759                         };
 760
 761                         // nested authentication
 762                         auth2_time = auth1_time + delta_time;
 763                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 764                         if (len != 4) {
 765                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 766                                 continue;
 767                         };
 768
 769                         nt2 = bytes_to_num(receivedAnswer, 4);
 770                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 771
 772                         // Parity validity check
 773                         for (j = 0; j < 4; j++) {
 774                                 par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 775                         }
 776
 777                         ncount = 0;
 778                         nttest = prng_successor(nt1, dmin - 1);
 779                         for (j = dmin; j < dmax + 1; j++) {
 780                                 nttest = prng_successor(nttest, 1);
 781                                 ks1 = nt2 ^ nttest;
 782
 783                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 784                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 785                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 786                                                 target_nt[i] = 0;
 787                                                 break;
 788                                         }
 789                                         target_nt[i] = nttest;
 790                                         target_ks[i] = ks1;
 791                                         ncount++;
 792                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 793                                                 target_nt[i] = 0;
 794                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 795                                                 break;
 796                                         }
 797                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 798                                 }
 799                         }
 800                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 801                 }
 802         }
 803
 804         LED_C_OFF();
 805
 806         //  ----------------------------- crypto1 destroy
 807         crypto1_destroy(pcs);
 808
 809         byte_t buf[4 + 4 * 4];
 810         memcpy(buf, &cuid, 4);
 811         memcpy(buf+4, &target_nt[0], 4);
 812         memcpy(buf+8, &target_ks[0], 4);
 813         memcpy(buf+12, &target_nt[1], 4);
 814         memcpy(buf+16, &target_ks[1], 4);
 815
 816         LED_B_ON();
 817         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 818         LED_B_OFF();
 819
 820         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 821
 822         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 823         LEDsoff();
 824 }
 825
 826 //-----------------------------------------------------------------------------
 827 // MIFARE check keys. key count up to 85.
 828 //
 829 //-----------------------------------------------------------------------------
 830 void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 831 {
 832   // params
 833         uint8_t blockNo = arg0 & 0xff;
 834         uint8_t keyType = (arg0 >> 8) & 0xff;
 835         bool clearTrace = arg1;
 836         uint8_t keyCount = arg2;
 837         uint64_t ui64Key = 0;
 838
 839         // variables
 840         int i;
 841         byte_t isOK = 0;
 842         uint8_t uid[10];
 843         uint32_t cuid;
 844         struct Crypto1State mpcs = {0, 0};
 845         struct Crypto1State *pcs;
 846         pcs = &mpcs;
 847
 848         // clear debug level
 849         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 850         MF_DBGLEVEL = MF_DBG_NONE;
 851
 852         LED_A_ON();
 853         LED_B_OFF();
 854         LED_C_OFF();
 855         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 856
 857         if (clearTrace) clear_trace();
 858         set_tracing(TRUE);
 859
 860         for (i = 0; i < keyCount; i++) {
 861                 if(mifare_classic_halt(pcs, cuid)) {
 862                         if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Halt error");
 863                 }
 864
 865                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
 866                         if (OLD_MF_DBGLEVEL >= 1)       Dbprintf("ChkKeys: Can't select card");
 867                         break;
 868                 };
 869
 870                 ui64Key = bytes_to_num(datain + i * 6, 6);
 871                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 872                         continue;
 873                 };
 874
 875                 isOK = 1;
 876                 break;
 877         }
 878
 879         //  ----------------------------- crypto1 destroy
 880         crypto1_destroy(pcs);
 881
 882         LED_B_ON();
 883     cmd_send(CMD_ACK,isOK,0,0,datain + i * 6,6);
 884         LED_B_OFF();
 885
 886         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 887         LEDsoff();
 888
 889         // restore debug level
 890         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
 891 }
 892
 893 //-----------------------------------------------------------------------------
 894 // MIFARE commands set debug level
 895 //
 896 //-----------------------------------------------------------------------------
 897 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 898         MF_DBGLEVEL = arg0;
 899         Dbprintf("Debug level: %d", MF_DBGLEVEL);
 900 }
 901
 902 //-----------------------------------------------------------------------------
 903 // Work with emulator memory
 904 //
 905 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
 906 // involved in dealing with emulator memory. But if it is called later, it might
 907 // destroy the Emulator Memory.
 908 //-----------------------------------------------------------------------------
 909
 910 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 911         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 912         emlClearMem();
 913 }
 914
 915 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 916         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 917         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 918 }
 919
 920 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 921         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 922         byte_t buf[USB_CMD_DATA_SIZE];
 923         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 924
 925         LED_B_ON();
 926         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 927         LED_B_OFF();
 928 }
 929
 930 //-----------------------------------------------------------------------------
 931 // Load a card into the emulator memory
 932 //
 933 //-----------------------------------------------------------------------------
 934 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 935         uint8_t numSectors = arg0;
 936         uint8_t keyType = arg1;
 937         uint64_t ui64Key = 0;
 938         uint32_t cuid;
 939         struct Crypto1State mpcs = {0, 0};
 940         struct Crypto1State *pcs;
 941         pcs = &mpcs;
 942
 943         // variables
 944         byte_t dataoutbuf[16];
 945         byte_t dataoutbuf2[16];
 946         uint8_t uid[10];
 947
 948         LED_A_ON();
 949         LED_B_OFF();
 950         LED_C_OFF();
 951         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 952
 953         clear_trace();
 954         set_tracing(false);
 955
 956         bool isOK = true;
 957
 958         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 959                 isOK = false;
 960                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 961         }
 962
 963         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 964                 ui64Key = emlGetKey(sectorNo, keyType);
 965                 if (sectorNo == 0){
 966                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 967                                 isOK = false;
 968                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 969                                 break;
 970                         }
 971                 } else {
 972                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 973                                 isOK = false;
 974                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 975                                 break;
 976                         }
 977                 }
 978
 979                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 980                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 981                                 isOK = false;
 982                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 983                                 break;
 984                         };
 985                         if (isOK) {
 986                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 987                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 988                                 } else {        // sector trailer, keep the keys, set only the AC
 989                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 990                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 991                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 992                                 }
 993                         }
 994                 }
 995
 996         }
 997
 998         if(mifare_classic_halt(pcs, cuid)) {
 999                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1000         };
1001
1002         //  ----------------------------- crypto1 destroy
1003         crypto1_destroy(pcs);
1004
1005         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1006         LEDsoff();
1007
1008         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1009
1010 }
1011
1012
1013 //-----------------------------------------------------------------------------
1014 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1015 //
1016 //-----------------------------------------------------------------------------
1017 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1018
1019   // params
1020         uint8_t needWipe = arg0;
1021         // bit 0 - need get UID
1022         // bit 1 - need wupC
1023         // bit 2 - need HALT after sequence
1024         // bit 3 - need init FPGA and field before sequence
1025         // bit 4 - need reset FPGA and LED
1026         uint8_t workFlags = arg1;
1027         uint8_t blockNo = arg2;
1028
1029         // card commands
1030         uint8_t wupC1[]       = { 0x40 };
1031         uint8_t wupC2[]       = { 0x43 };
1032         uint8_t wipeC[]       = { 0x41 };
1033
1034         // variables
1035         byte_t isOK = 0;
1036         uint8_t uid[10] = {0x00};
1037         uint8_t d_block[18] = {0x00};
1038         uint32_t cuid;
1039
1040         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1041         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1042
1043         // reset FPGA and LED
1044         if (workFlags & 0x08) {
1045                 LED_A_ON();
1046                 LED_B_OFF();
1047                 LED_C_OFF();
1048                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1049
1050                 clear_trace();
1051                 set_tracing(TRUE);
1052         }
1053
1054         while (true) {
1055
1056                 // get UID from chip
1057                 if (workFlags & 0x01) {
1058                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
1059                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1060                                 break;
1061                         };
1062
1063                         if(mifare_classic_halt(NULL, cuid)) {
1064                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1065                                 break;
1066                         };
1067                 };
1068
1069                 // reset chip
1070                 if (needWipe){
1071                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1072                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1073                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1074                                 break;
1075                         };
1076
1077                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1078                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1079                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1080                                 break;
1081                         };
1082
1083                         if(mifare_classic_halt(NULL, cuid)) {
1084                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1085                                 break;
1086                         };
1087                 };
1088
1089                 // write block
1090                 if (workFlags & 0x02) {
1091                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1092                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1093                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1094                                 break;
1095                         };
1096
1097                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1098                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1099                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1100                                 break;
1101                         };
1102                 }
1103
1104                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1105                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1106                         break;
1107                 };
1108
1109                 memcpy(d_block, datain, 16);
1110                 AppendCrc14443a(d_block, 16);
1111
1112                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1113                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1114                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1115                         break;
1116                 };
1117
1118                 if (workFlags & 0x04) {
1119                         if (mifare_classic_halt(NULL, cuid)) {
1120                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1121                                 break;
1122                         };
1123                 }
1124
1125                 isOK = 1;
1126                 break;
1127         }
1128
1129         LED_B_ON();
1130         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1131         LED_B_OFF();
1132
1133         if ((workFlags & 0x10) || (!isOK)) {
1134                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1135                 LEDsoff();
1136         }
1137 }
1138
1139
1140 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1141
1142   // params
1143         // bit 1 - need wupC
1144         // bit 2 - need HALT after sequence
1145         // bit 3 - need init FPGA and field before sequence
1146         // bit 4 - need reset FPGA and LED
1147         // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1148         uint8_t workFlags = arg0;
1149         uint8_t blockNo = arg2;
1150
1151         // card commands
1152         uint8_t wupC1[]       = { 0x40 };
1153         uint8_t wupC2[]       = { 0x43 };
1154
1155         // variables
1156         byte_t isOK = 0;
1157         uint8_t data[18] = {0x00};
1158         uint32_t cuid = 0;
1159
1160         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1161         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1162
1163         if (workFlags & 0x08) {
1164                 LED_A_ON();
1165                 LED_B_OFF();
1166                 LED_C_OFF();
1167                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1168
1169                 clear_trace();
1170                 set_tracing(TRUE);
1171         }
1172
1173         while (true) {
1174                 if (workFlags & 0x02) {
1175                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1176                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1177                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1178                                 break;
1179                         };
1180
1181                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1182                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1183                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1184                                 break;
1185                         };
1186                 }
1187
1188                 // read block
1189                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1190                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1191                         break;
1192                 };
1193                 memcpy(data, receivedAnswer, 18);
1194
1195                 if (workFlags & 0x04) {
1196                         if (mifare_classic_halt(NULL, cuid)) {
1197                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1198                                 break;
1199                         };
1200                 }
1201
1202                 isOK = 1;
1203                 break;
1204         }
1205
1206         LED_B_ON();
1207         if (workFlags & 0x20) {
1208                 if (isOK)
1209                         memcpy(datain, data, 18);
1210         }
1211         else
1212                 cmd_send(CMD_ACK,isOK,0,0,data,18);
1213         LED_B_OFF();
1214
1215         if ((workFlags & 0x10) || (!isOK)) {
1216                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1217                 LEDsoff();
1218         }
1219 }
1220
1221 void MifareCIdent(){
1222
1223         // card commands
1224         uint8_t wupC1[]       = { 0x40 };
1225         uint8_t wupC2[]       = { 0x43 };
1226
1227         // variables
1228         byte_t isOK = 1;
1229
1230         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1231         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1232
1233         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1234         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1235                 isOK = 0;
1236         };
1237
1238         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1239         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1240                 isOK = 0;
1241         };
1242
1243         if (mifare_classic_halt(NULL, 0)) {
1244                 isOK = 0;
1245         };
1246
1247         cmd_send(CMD_ACK,isOK,0,0,0,0);
1248 }
1249
1250 //
1251 // DESFIRE
1252 //
1253
1254 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1255
1256         byte_t dataout[11] = {0x00};
1257         uint8_t uid[10] = {0x00};
1258         uint32_t cuid;
1259
1260         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1261         clear_trace();
1262
1263         int len = iso14443a_select_card(uid, NULL, &cuid);
1264         if(!len) {
1265                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1266                 OnError(1);
1267                 return;
1268         };
1269
1270         if(mifare_desfire_des_auth1(cuid, dataout)){
1271                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1272                 OnError(4);
1273                 return;
1274         }
1275
1276         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1277     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1278 }
1279
1280 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1281
1282         uint32_t cuid = arg0;
1283         uint8_t key[16] = {0x00};
1284         byte_t isOK = 0;
1285         byte_t dataout[12] = {0x00};
1286
1287         memcpy(key, datain, 16);
1288
1289         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1290
1291         if( isOK) {
1292                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1293                 OnError(4);
1294                 return;
1295         }
1296
1297         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1298
1299         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1300         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1301         LEDsoff();
1302 }
1303
1304 void OnSuccess(){
1305         pcb_blocknum = 0;
1306         ReaderTransmit(deselect_cmd, 3 , NULL);
1307         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1308         LEDsoff();
1309 }
1310
1311 void OnError(uint8_t reason){
1312         pcb_blocknum = 0;
1313         ReaderTransmit(deselect_cmd, 3 , NULL);
1314         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1315         cmd_send(CMD_ACK,0,reason,0,0,0);
1316         LEDsoff();
1317 }