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

   1 //-----------------------------------------------------------------------------
   2 // Merlok - June 2011, 2012
   3 // Gerhard de Koning Gans - May 2008
   4 // Hagen Fritsch - June 2010
   5 // Midnitesnake - Dec 2013
   6 // Andy Davies  - Apr 2014
   7 // Iceman - May 2014
   8 //
   9 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
  10 // at your option, any later version. See the LICENSE.txt file for the text of
  11 // the license.
  12 //-----------------------------------------------------------------------------
  13 // Routines to support ISO 14443 type A.
  14 //-----------------------------------------------------------------------------
  15
  16 #include "mifarecmd.h"
  17 #include "apps.h"
  18 #include "util.h"
  19 #include "crc.h"
  20
  21 // the block number for the ISO14443-4 PCB
  22 uint8_t pcb_blocknum = 0;
  23 // Deselect card by sending a s-block. the crc is precalced for speed
  24 static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
  25
  26 //-----------------------------------------------------------------------------
  27 // Select, Authenticate, Read a MIFARE tag.
  28 // read block
  29 //-----------------------------------------------------------------------------
  30 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  31 {
  32   // params
  33         uint8_t blockNo = arg0;
  34         uint8_t keyType = arg1;
  35         uint64_t ui64Key = 0;
  36         ui64Key = bytes_to_num(datain, 6);
  37
  38         // variables
  39         byte_t isOK = 0;
  40         byte_t dataoutbuf[16];
  41         uint8_t uid[10];
  42         uint32_t cuid;
  43         struct Crypto1State mpcs = {0, 0};
  44         struct Crypto1State *pcs;
  45         pcs = &mpcs;
  46
  47         // clear trace
  48         clear_trace();
  49         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  50
  51         LED_A_ON();
  52         LED_B_OFF();
  53         LED_C_OFF();
  54
  55         while (true) {
  56                 if(!iso14443a_select_card(uid, NULL, &cuid)) {
  57                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  58                         break;
  59                 };
  60
  61                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  62                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  63                         break;
  64                 };
  65
  66                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  67                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  68                         break;
  69                 };
  70
  71                 if(mifare_classic_halt(pcs, cuid)) {
  72                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  73                         break;
  74                 };
  75
  76                 isOK = 1;
  77                 break;
  78         }
  79
  80         //  ----------------------------- crypto1 destroy
  81         crypto1_destroy(pcs);
  82
  83         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  84
  85         LED_B_ON();
  86         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  87         LED_B_OFF();
  88
  89         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  90         LEDsoff();
  91 }
  92
  93 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  94
  95         bool turnOffField = (arg0 == 1);
  96
  97         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
  98         clear_trace();
  99         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 100
 101         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 102                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 103                 OnError(0);
 104                 return;
 105         };
 106
 107         if(!mifare_ultra_auth(keybytes)){
 108                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 109                 OnError(1);
 110                 return;
 111         }
 112
 113         if (turnOffField) {
 114                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 115                 LEDsoff();
 116         }
 117         cmd_send(CMD_ACK,1,0,0,0,0);
 118 }
 119
 120 // Arg0 = BlockNo,
 121 // Arg1 = UsePwd bool
 122 // datain = PWD bytes,
 123 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 124 {
 125         uint8_t blockNo = arg0;
 126         byte_t dataout[16] = {0x00};
 127         bool useKey = (arg1 == 1); //UL_C
 128         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 129
 130         LEDsoff();
 131         LED_A_ON();
 132         clear_trace();
 133         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 134
 135         int len = iso14443a_select_card(NULL, NULL, NULL);
 136         if(!len) {
 137                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 138                 OnError(1);
 139                 return;
 140         }
 141
 142         // UL-C authentication
 143         if ( useKey ) {
 144                 uint8_t key[16] = {0x00};
 145                 memcpy(key, datain, sizeof(key) );
 146
 147                 if ( !mifare_ultra_auth(key) ) {
 148                         OnError(1);
 149                         return;
 150                 }
 151         }
 152
 153         // UL-EV1 / NTAG authentication
 154         if ( usePwd ) {
 155                 uint8_t pwd[4] = {0x00};
 156                 memcpy(pwd, datain, 4);
 157                 uint8_t pack[4] = {0,0,0,0};
 158                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 159                         OnError(1);
 160                         return;
 161                 }
 162         }
 163
 164         if( mifare_ultra_readblock(blockNo, dataout) ) {
 165                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 166                 OnError(2);
 167                 return;
 168         }
 169
 170         if( mifare_ultra_halt() ) {
 171                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 172                 OnError(3);
 173                 return;
 174         }
 175
 176         cmd_send(CMD_ACK,1,0,0,dataout,16);
 177         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 178         LEDsoff();
 179 }
 180
 181 //-----------------------------------------------------------------------------
 182 // Select, Authenticate, Read a MIFARE tag.
 183 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 184 //-----------------------------------------------------------------------------
 185 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 186 {
 187   // params
 188         uint8_t sectorNo = arg0;
 189         uint8_t keyType = arg1;
 190         uint64_t ui64Key = 0;
 191         ui64Key = bytes_to_num(datain, 6);
 192
 193         // variables
 194         byte_t isOK = 0;
 195         byte_t dataoutbuf[16 * 16];
 196         uint8_t uid[10];
 197         uint32_t cuid;
 198         struct Crypto1State mpcs = {0, 0};
 199         struct Crypto1State *pcs;
 200         pcs = &mpcs;
 201
 202         // clear trace
 203         clear_trace();
 204
 205         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 206
 207         LED_A_ON();
 208         LED_B_OFF();
 209         LED_C_OFF();
 210
 211         isOK = 1;
 212         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 213                 isOK = 0;
 214                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 215         }
 216
 217
 218         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 219                 isOK = 0;
 220                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 221         }
 222
 223         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 224                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 225                         isOK = 0;
 226                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 227                         break;
 228                 }
 229         }
 230
 231         if(mifare_classic_halt(pcs, cuid)) {
 232                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 233         }
 234
 235         //  ----------------------------- crypto1 destroy
 236         crypto1_destroy(pcs);
 237
 238         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 239
 240         LED_B_ON();
 241         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 242         LED_B_OFF();
 243
 244         // Thats it...
 245         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 246         LEDsoff();
 247 }
 248
 249 // arg0 = blockNo (start)
 250 // arg1 = Pages (number of blocks)
 251 // arg2 = useKey
 252 // datain = KEY bytes
 253 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 254 {
 255         // free eventually allocated BigBuf memory
 256         BigBuf_free();
 257         clear_trace();
 258
 259         // params
 260         uint8_t blockNo = arg0;
 261         uint16_t blocks = arg1;
 262         bool useKey = (arg2 == 1); //UL_C
 263         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 264         uint32_t countblocks = 0;
 265         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 266         if (dataout == NULL){
 267                 Dbprintf("out of memory");
 268                 OnError(1);
 269                 return;
 270         }
 271
 272         LEDsoff();
 273         LED_A_ON();
 274         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 275
 276         int len = iso14443a_select_card(NULL, NULL, NULL);
 277         if (!len) {
 278                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 279                 OnError(1);
 280                 return;
 281         }
 282
 283         // UL-C authentication
 284         if ( useKey ) {
 285                 uint8_t key[16] = {0x00};
 286                 memcpy(key, datain, sizeof(key) );
 287
 288                 if ( !mifare_ultra_auth(key) ) {
 289                         OnError(1);
 290                         return;
 291                 }
 292         }
 293
 294         // UL-EV1 / NTAG authentication
 295         if (usePwd) {
 296                 uint8_t pwd[4] = {0x00};
 297                 memcpy(pwd, datain, sizeof(pwd));
 298                 uint8_t pack[4] = {0,0,0,0};
 299
 300                 if (!mifare_ul_ev1_auth(pwd, pack)){
 301                         OnError(1);
 302                         return;
 303                 }
 304         }
 305
 306         for (int i = 0; i < blocks; i++){
 307                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 308                         Dbprintf("Data exceeds buffer!!");
 309                         break;
 310                 }
 311
 312                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 313
 314                 if (len) {
 315                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 316                         // if no blocks read - error out
 317                         if (i==0){
 318                                 OnError(2);
 319                                 return;
 320                         } else {
 321                                 //stop at last successful read block and return what we got
 322                                 break;
 323                         }
 324                 } else {
 325                         countblocks++;
 326                 }
 327         }
 328
 329         len = mifare_ultra_halt();
 330         if (len) {
 331                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 332                 OnError(3);
 333                 return;
 334         }
 335
 336         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 337
 338         countblocks *= 4;
 339
 340         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 341         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 342         LEDsoff();
 343         BigBuf_free();
 344 }
 345
 346 //-----------------------------------------------------------------------------
 347 // Select, Authenticate, Write a MIFARE tag.
 348 // read block
 349 //-----------------------------------------------------------------------------
 350 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 351 {
 352         // params
 353         uint8_t blockNo = arg0;
 354         uint8_t keyType = arg1;
 355         uint64_t ui64Key = 0;
 356         byte_t blockdata[16];
 357
 358         ui64Key = bytes_to_num(datain, 6);
 359         memcpy(blockdata, datain + 10, 16);
 360
 361         // variables
 362         byte_t isOK = 0;
 363         uint8_t uid[10];
 364         uint32_t cuid;
 365         struct Crypto1State mpcs = {0, 0};
 366         struct Crypto1State *pcs;
 367         pcs = &mpcs;
 368
 369         // clear trace
 370         clear_trace();
 371
 372         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 373
 374         LED_A_ON();
 375         LED_B_OFF();
 376         LED_C_OFF();
 377
 378         while (true) {
 379                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 380                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 381                         break;
 382                 };
 383
 384                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 385                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 386                         break;
 387                 };
 388
 389                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 390                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 391                         break;
 392                 };
 393
 394                 if(mifare_classic_halt(pcs, cuid)) {
 395                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 396                         break;
 397                 };
 398
 399                 isOK = 1;
 400                 break;
 401         }
 402
 403         //  ----------------------------- crypto1 destroy
 404         crypto1_destroy(pcs);
 405
 406         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 407
 408         LED_B_ON();
 409         cmd_send(CMD_ACK,isOK,0,0,0,0);
 410         LED_B_OFF();
 411
 412
 413         // Thats it...
 414         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 415         LEDsoff();
 416 }
 417
 418 /* // Command not needed but left for future testing
 419 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 420 {
 421         uint8_t blockNo = arg0;
 422         byte_t blockdata[16] = {0x00};
 423
 424         memcpy(blockdata, datain, 16);
 425
 426         uint8_t uid[10] = {0x00};
 427
 428         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 429
 430         clear_trace();
 431         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 432
 433         if(!iso14443a_select_card(uid, NULL, NULL)) {
 434                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 435                 OnError(0);
 436                 return;
 437         };
 438
 439         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 440                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 441                 OnError(0);
 442                 return; };
 443
 444         if(mifare_ultra_halt()) {
 445                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 446                 OnError(0);
 447                 return;
 448         };
 449
 450         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 451
 452         cmd_send(CMD_ACK,1,0,0,0,0);
 453         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 454         LEDsoff();
 455 }
 456 */
 457
 458 // Arg0   : Block to write to.
 459 // Arg1   : 0 = use no authentication.
 460 //          1 = use 0x1A authentication.
 461 //          2 = use 0x1B authentication.
 462 // datain : 4 first bytes is data to be written.
 463 //        : 4/16 next bytes is authentication key.
 464 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 465 {
 466         uint8_t blockNo = arg0;
 467         bool useKey = (arg1 == 1); //UL_C
 468         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 469         byte_t blockdata[4] = {0x00};
 470
 471         memcpy(blockdata, datain,4);
 472
 473         LEDsoff();
 474         LED_A_ON();
 475         clear_trace();
 476         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 477
 478         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 479                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 480                 OnError(0);
 481                 return;
 482         };
 483
 484         // UL-C authentication
 485         if ( useKey ) {
 486                 uint8_t key[16] = {0x00};
 487                 memcpy(key, datain+4, sizeof(key) );
 488
 489                 if ( !mifare_ultra_auth(key) ) {
 490                         OnError(1);
 491                         return;
 492                 }
 493         }
 494
 495         // UL-EV1 / NTAG authentication
 496         if (usePwd) {
 497                 uint8_t pwd[4] = {0x00};
 498                 memcpy(pwd, datain+4, 4);
 499                 uint8_t pack[4] = {0,0,0,0};
 500                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 501                         OnError(1);
 502                         return;
 503                 }
 504         }
 505
 506         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 507                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 508                 OnError(0);
 509                 return;
 510         };
 511
 512         if(mifare_ultra_halt()) {
 513                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 514                 OnError(0);
 515                 return;
 516         };
 517
 518         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 519
 520         cmd_send(CMD_ACK,1,0,0,0,0);
 521         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 522         LEDsoff();
 523 }
 524
 525 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 526
 527         uint8_t pwd[16] = {0x00};
 528         byte_t blockdata[4] = {0x00};
 529
 530         memcpy(pwd, datain, 16);
 531
 532         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 533         clear_trace();
 534         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 535
 536         if(!iso14443a_select_card(NULL, NULL, NULL)) {
 537                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 538                 OnError(0);
 539                 return;
 540         };
 541
 542         blockdata[0] = pwd[7];
 543         blockdata[1] = pwd[6];
 544         blockdata[2] = pwd[5];
 545         blockdata[3] = pwd[4];
 546         if(mifare_ultra_writeblock( 44, blockdata)) {
 547                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 548                 OnError(44);
 549                 return;
 550         };
 551
 552         blockdata[0] = pwd[3];
 553         blockdata[1] = pwd[2];
 554         blockdata[2] = pwd[1];
 555         blockdata[3] = pwd[0];
 556         if(mifare_ultra_writeblock( 45, blockdata)) {
 557                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 558                 OnError(45);
 559                 return;
 560         };
 561
 562         blockdata[0] = pwd[15];
 563         blockdata[1] = pwd[14];
 564         blockdata[2] = pwd[13];
 565         blockdata[3] = pwd[12];
 566         if(mifare_ultra_writeblock( 46, blockdata)) {
 567                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 568                 OnError(46);
 569                 return;
 570         };
 571
 572         blockdata[0] = pwd[11];
 573         blockdata[1] = pwd[10];
 574         blockdata[2] = pwd[9];
 575         blockdata[3] = pwd[8];
 576         if(mifare_ultra_writeblock( 47, blockdata)) {
 577                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 578                 OnError(47);
 579                 return;
 580         };
 581
 582         if(mifare_ultra_halt()) {
 583                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 584                 OnError(0);
 585                 return;
 586         };
 587
 588         cmd_send(CMD_ACK,1,0,0,0,0);
 589         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 590         LEDsoff();
 591 }
 592
 593 // Return 1 if the nonce is invalid else return 0
 594 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 595         return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 596         (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 597         (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 598 }
 599
 600
 601 //-----------------------------------------------------------------------------
 602 // MIFARE nested authentication.
 603 //
 604 //-----------------------------------------------------------------------------
 605 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 606 {
 607         // params
 608         uint8_t blockNo = arg0 & 0xff;
 609         uint8_t keyType = (arg0 >> 8) & 0xff;
 610         uint8_t targetBlockNo = arg1 & 0xff;
 611         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 612         uint64_t ui64Key = 0;
 613
 614         ui64Key = bytes_to_num(datain, 6);
 615
 616         // variables
 617         uint16_t rtr, i, j, len;
 618         uint16_t davg;
 619         static uint16_t dmin, dmax;
 620         uint8_t uid[10];
 621         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 622         uint8_t par[1];
 623         uint32_t target_nt[2], target_ks[2];
 624
 625         uint8_t par_array[4];
 626         uint16_t ncount = 0;
 627         struct Crypto1State mpcs = {0, 0};
 628         struct Crypto1State *pcs;
 629         pcs = &mpcs;
 630         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 631
 632         uint32_t auth1_time, auth2_time;
 633         static uint16_t delta_time;
 634
 635         // free eventually allocated BigBuf memory
 636         BigBuf_free();
 637         // clear trace
 638         clear_trace();
 639         set_tracing(false);
 640
 641         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 642
 643         LED_A_ON();
 644         LED_C_OFF();
 645
 646
 647         // statistics on nonce distance
 648         int16_t isOK = 0;
 649         #define NESTED_MAX_TRIES 12
 650         uint16_t unsuccessfull_tries = 0;
 651         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 652                 LED_B_ON();
 653                 WDT_HIT();
 654
 655                 davg = dmax = 0;
 656                 dmin = 2000;
 657                 delta_time = 0;
 658
 659                 for (rtr = 0; rtr < 17; rtr++) {
 660
 661                         // Test if the action was cancelled
 662                         if(BUTTON_PRESS()) {
 663                                 isOK = -2;
 664                                 break;
 665                         }
 666
 667                         // prepare next select. No need to power down the card.
 668                         if(mifare_classic_halt(pcs, cuid)) {
 669                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 670                                 rtr--;
 671                                 continue;
 672                         }
 673
 674                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 675                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 676                                 rtr--;
 677                                 continue;
 678                         };
 679
 680                         auth1_time = 0;
 681                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 682                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 683                                 rtr--;
 684                                 continue;
 685                         };
 686
 687                         if (delta_time) {
 688                                 auth2_time = auth1_time + delta_time;
 689                         } else {
 690                                 auth2_time = 0;
 691                         }
 692                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 693                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 694                                 rtr--;
 695                                 continue;
 696                         };
 697
 698                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 699                         for (i = 101; i < 1200; i++) {
 700                                 nttmp = prng_successor(nttmp, 1);
 701                                 if (nttmp == nt2) break;
 702                         }
 703
 704                         if (i != 1200) {
 705                                 if (rtr != 0) {
 706                                         davg += i;
 707                                         dmin = MIN(dmin, i);
 708                                         dmax = MAX(dmax, i);
 709                                 }
 710                                 else {
 711                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 712                                 }
 713                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 714                         } else {
 715                                 unsuccessfull_tries++;
 716                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 717                                         isOK = -3;
 718                                 }
 719                         }
 720                 }
 721
 722                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 723
 724                 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);
 725
 726                 dmin = davg - 2;
 727                 dmax = davg + 2;
 728
 729                 LED_B_OFF();
 730
 731         }
 732         //  -------------------------------------------------------------------------------------------------
 733
 734         LED_C_ON();
 735
 736         //  get crypted nonces for target sector
 737         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 738
 739                 target_nt[i] = 0;
 740                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 741
 742                         // prepare next select. No need to power down the card.
 743                         if(mifare_classic_halt(pcs, cuid)) {
 744                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 745                                 continue;
 746                         }
 747
 748                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 749                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 750                                 continue;
 751                         };
 752
 753                         auth1_time = 0;
 754                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 755                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 756                                 continue;
 757                         };
 758
 759                         // nested authentication
 760                         auth2_time = auth1_time + delta_time;
 761                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 762                         if (len != 4) {
 763                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 764                                 continue;
 765                         };
 766
 767                         nt2 = bytes_to_num(receivedAnswer, 4);
 768                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 769
 770                         // Parity validity check
 771                         for (j = 0; j < 4; j++) {
 772                                 par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 773                         }
 774
 775                         ncount = 0;
 776                         nttest = prng_successor(nt1, dmin - 1);
 777                         for (j = dmin; j < dmax + 1; j++) {
 778                                 nttest = prng_successor(nttest, 1);
 779                                 ks1 = nt2 ^ nttest;
 780
 781                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 782                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 783                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 784                                                 target_nt[i] = 0;
 785                                                 break;
 786                                         }
 787                                         target_nt[i] = nttest;
 788                                         target_ks[i] = ks1;
 789                                         ncount++;
 790                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 791                                                 target_nt[i] = 0;
 792                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 793                                                 break;
 794                                         }
 795                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 796                                 }
 797                         }
 798                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 799                 }
 800         }
 801
 802         LED_C_OFF();
 803
 804         //  ----------------------------- crypto1 destroy
 805         crypto1_destroy(pcs);
 806
 807         byte_t buf[4 + 4 * 4];
 808         memcpy(buf, &cuid, 4);
 809         memcpy(buf+4, &target_nt[0], 4);
 810         memcpy(buf+8, &target_ks[0], 4);
 811         memcpy(buf+12, &target_nt[1], 4);
 812         memcpy(buf+16, &target_ks[1], 4);
 813
 814         LED_B_ON();
 815         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 816         LED_B_OFF();
 817
 818         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 819
 820         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 821         LEDsoff();
 822         set_tracing(TRUE);
 823 }
 824
 825 //-----------------------------------------------------------------------------
 826 // MIFARE check keys. key count up to 85.
 827 //
 828 //-----------------------------------------------------------------------------
 829 void MifareChkKeys(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 830 {
 831   // params
 832         uint8_t blockNo = arg0;
 833         uint8_t keyType = arg1;
 834         uint8_t keyCount = arg2;
 835         uint64_t ui64Key = 0;
 836
 837         // variables
 838         int i;
 839         byte_t isOK = 0;
 840         uint8_t uid[10];
 841         uint32_t cuid;
 842         struct Crypto1State mpcs = {0, 0};
 843         struct Crypto1State *pcs;
 844         pcs = &mpcs;
 845
 846         // clear debug level
 847         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 848         MF_DBGLEVEL = MF_DBG_NONE;
 849
 850         // clear trace
 851         clear_trace();
 852         set_tracing(TRUE);
 853
 854         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 855
 856         LED_A_ON();
 857         LED_B_OFF();
 858         LED_C_OFF();
 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 //-----------------------------------------------------------------------------
 906 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 907         emlClearMem();
 908 }
 909
 910 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 911         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
 912 }
 913
 914 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 915         byte_t buf[USB_CMD_DATA_SIZE];
 916         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
 917
 918         LED_B_ON();
 919         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
 920         LED_B_OFF();
 921 }
 922
 923 //-----------------------------------------------------------------------------
 924 // Load a card into the emulator memory
 925 //
 926 //-----------------------------------------------------------------------------
 927 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
 928         uint8_t numSectors = arg0;
 929         uint8_t keyType = arg1;
 930         uint64_t ui64Key = 0;
 931         uint32_t cuid;
 932         struct Crypto1State mpcs = {0, 0};
 933         struct Crypto1State *pcs;
 934         pcs = &mpcs;
 935
 936         // variables
 937         byte_t dataoutbuf[16];
 938         byte_t dataoutbuf2[16];
 939         uint8_t uid[10];
 940
 941         // clear trace
 942         clear_trace();
 943         set_tracing(false);
 944
 945         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 946
 947         LED_A_ON();
 948         LED_B_OFF();
 949         LED_C_OFF();
 950
 951         bool isOK = true;
 952
 953         if(!iso14443a_select_card(uid, NULL, &cuid)) {
 954                 isOK = false;
 955                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 956         }
 957
 958         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
 959                 ui64Key = emlGetKey(sectorNo, keyType);
 960                 if (sectorNo == 0){
 961                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 962                                 isOK = false;
 963                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
 964                                 break;
 965                         }
 966                 } else {
 967                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
 968                                 isOK = false;
 969                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
 970                                 break;
 971                         }
 972                 }
 973
 974                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 975                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
 976                                 isOK = false;
 977                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
 978                                 break;
 979                         };
 980                         if (isOK) {
 981                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
 982                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
 983                                 } else {        // sector trailer, keep the keys, set only the AC
 984                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
 985                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
 986                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
 987                                 }
 988                         }
 989                 }
 990
 991         }
 992
 993         if(mifare_classic_halt(pcs, cuid)) {
 994                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 995         };
 996
 997         //  ----------------------------- crypto1 destroy
 998         crypto1_destroy(pcs);
 999
1000         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1001         LEDsoff();
1002
1003         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1004
1005 }
1006
1007
1008 //-----------------------------------------------------------------------------
1009 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1010 //
1011 //-----------------------------------------------------------------------------
1012 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1013
1014   // params
1015         uint8_t needWipe = arg0;
1016         // bit 0 - need get UID
1017         // bit 1 - need wupC
1018         // bit 2 - need HALT after sequence
1019         // bit 3 - need init FPGA and field before sequence
1020         // bit 4 - need reset FPGA and LED
1021         uint8_t workFlags = arg1;
1022         uint8_t blockNo = arg2;
1023
1024         // card commands
1025         uint8_t wupC1[]       = { 0x40 };
1026         uint8_t wupC2[]       = { 0x43 };
1027         uint8_t wipeC[]       = { 0x41 };
1028
1029         // variables
1030         byte_t isOK = 0;
1031         uint8_t uid[10] = {0x00};
1032         uint8_t d_block[18] = {0x00};
1033         uint32_t cuid;
1034
1035         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1036         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1037
1038         // reset FPGA and LED
1039         if (workFlags & 0x08) {
1040                 LED_A_ON();
1041                 LED_B_OFF();
1042                 LED_C_OFF();
1043
1044                 clear_trace();
1045                 set_tracing(TRUE);
1046                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1047         }
1048
1049         while (true) {
1050
1051                 // get UID from chip
1052                 if (workFlags & 0x01) {
1053                         if(!iso14443a_select_card(uid, NULL, &cuid)) {
1054                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1055                                 break;
1056                         };
1057
1058                         if(mifare_classic_halt(NULL, cuid)) {
1059                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1060                                 break;
1061                         };
1062                 };
1063
1064                 // reset chip
1065                 if (needWipe){
1066                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1067                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1068                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1069                                 break;
1070                         };
1071
1072                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1073                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1074                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1075                                 break;
1076                         };
1077
1078                         if(mifare_classic_halt(NULL, cuid)) {
1079                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1080                                 break;
1081                         };
1082                 };
1083
1084                 // write block
1085                 if (workFlags & 0x02) {
1086                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1087                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1088                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1089                                 break;
1090                         };
1091
1092                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1093                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1094                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1095                                 break;
1096                         };
1097                 }
1098
1099                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1100                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1101                         break;
1102                 };
1103
1104                 memcpy(d_block, datain, 16);
1105                 AppendCrc14443a(d_block, 16);
1106
1107                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1108                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1109                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1110                         break;
1111                 };
1112
1113                 if (workFlags & 0x04) {
1114                         if (mifare_classic_halt(NULL, cuid)) {
1115                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1116                                 break;
1117                         };
1118                 }
1119
1120                 isOK = 1;
1121                 break;
1122         }
1123
1124         LED_B_ON();
1125         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1126         LED_B_OFF();
1127
1128         if ((workFlags & 0x10) || (!isOK)) {
1129                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1130                 LEDsoff();
1131         }
1132 }
1133
1134
1135 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1136
1137   // params
1138         // bit 1 - need wupC
1139         // bit 2 - need HALT after sequence
1140         // bit 3 - need init FPGA and field before sequence
1141         // bit 4 - need reset FPGA and LED
1142         uint8_t workFlags = arg0;
1143         uint8_t blockNo = arg2;
1144
1145         // card commands
1146         uint8_t wupC1[]       = { 0x40 };
1147         uint8_t wupC2[]       = { 0x43 };
1148
1149         // variables
1150         byte_t isOK = 0;
1151         uint8_t data[18] = {0x00};
1152         uint32_t cuid = 0;
1153
1154         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1155         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1156
1157         if (workFlags & 0x08) {
1158                 LED_A_ON();
1159                 LED_B_OFF();
1160                 LED_C_OFF();
1161
1162                 clear_trace();
1163                 set_tracing(TRUE);
1164                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1165         }
1166
1167         while (true) {
1168                 if (workFlags & 0x02) {
1169                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1170                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1171                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1172                                 break;
1173                         };
1174
1175                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1176                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1177                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1178                                 break;
1179                         };
1180                 }
1181
1182                 // read block
1183                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1184                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1185                         break;
1186                 };
1187                 memcpy(data, receivedAnswer, 18);
1188
1189                 if (workFlags & 0x04) {
1190                         if (mifare_classic_halt(NULL, cuid)) {
1191                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1192                                 break;
1193                         };
1194                 }
1195
1196                 isOK = 1;
1197                 break;
1198         }
1199
1200         LED_B_ON();
1201         cmd_send(CMD_ACK,isOK,0,0,data,18);
1202         LED_B_OFF();
1203
1204         if ((workFlags & 0x10) || (!isOK)) {
1205                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1206                 LEDsoff();
1207         }
1208 }
1209
1210 void MifareCIdent(){
1211
1212         // card commands
1213         uint8_t wupC1[]       = { 0x40 };
1214         uint8_t wupC2[]       = { 0x43 };
1215
1216         // variables
1217         byte_t isOK = 1;
1218
1219         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1220         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1221
1222         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1223         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1224                 isOK = 0;
1225         };
1226
1227         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1228         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1229                 isOK = 0;
1230         };
1231
1232         if (mifare_classic_halt(NULL, 0)) {
1233                 isOK = 0;
1234         };
1235
1236         cmd_send(CMD_ACK,isOK,0,0,0,0);
1237 }
1238
1239                         //
1240 // DESFIRE
1241 //
1242
1243 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1244
1245         byte_t dataout[11] = {0x00};
1246         uint8_t uid[10] = {0x00};
1247         uint32_t cuid;
1248
1249         clear_trace();
1250         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1251
1252         int len = iso14443a_select_card(uid, NULL, &cuid);
1253         if(!len) {
1254                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1255                 OnError(1);
1256                 return;
1257         };
1258
1259         if(mifare_desfire_des_auth1(cuid, dataout)){
1260                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1261                 OnError(4);
1262                 return;
1263         }
1264
1265         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1266     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1267 }
1268
1269 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1270
1271         uint32_t cuid = arg0;
1272         uint8_t key[16] = {0x00};
1273         byte_t isOK = 0;
1274         byte_t dataout[12] = {0x00};
1275
1276         memcpy(key, datain, 16);
1277
1278         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1279
1280         if( isOK) {
1281                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1282                 OnError(4);
1283                 return;
1284         }
1285
1286         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1287
1288         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1289         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1290         LEDsoff();
1291 }
1292
1293 void OnSuccess(){
1294         pcb_blocknum = 0;
1295         ReaderTransmit(deselect_cmd, 3 , NULL);
1296         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1297         LEDsoff();
1298 }
1299
1300 void OnError(uint8_t reason){
1301         pcb_blocknum = 0;
1302         ReaderTransmit(deselect_cmd, 3 , NULL);
1303         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1304         cmd_send(CMD_ACK,0,reason,0,0,0);
1305         LEDsoff();
1306 }