cvs.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
  18 #include "apps.h"
  19 #include "util.h"
  20 #include "parity.h"
  21 #include "crc.h"
  22
  23 // the block number for the ISO14443-4 PCB
  24 static uint8_t pcb_blocknum = 0;
  25 // Deselect card by sending a s-block. the crc is precalced for speed
  26 static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
  27
  28 //-----------------------------------------------------------------------------
  29 // Select, Authenticate, Read a MIFARE tag.
  30 // read block
  31 //-----------------------------------------------------------------------------
  32 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  33 {
  34   // params
  35         uint8_t blockNo = arg0;
  36         uint8_t keyType = arg1;
  37         uint64_t ui64Key = 0;
  38         ui64Key = bytes_to_num(datain, 6);
  39
  40         // variables
  41         byte_t isOK = 0;
  42         byte_t dataoutbuf[16];
  43         uint8_t uid[10];
  44         uint32_t cuid;
  45         struct Crypto1State mpcs = {0, 0};
  46         struct Crypto1State *pcs;
  47         pcs = &mpcs;
  48
  49         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  50
  51         clear_trace();
  52
  53         LED_A_ON();
  54         LED_B_OFF();
  55         LED_C_OFF();
  56
  57         while (true) {
  58                 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
  59                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  60                         break;
  61                 };
  62
  63                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  64                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  65                         break;
  66                 };
  67
  68                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  69                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  70                         break;
  71                 };
  72
  73                 if(mifare_classic_halt(pcs, cuid)) {
  74                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  75                         break;
  76                 };
  77
  78                 isOK = 1;
  79                 break;
  80         }
  81
  82         //  ----------------------------- crypto1 destroy
  83         crypto1_destroy(pcs);
  84
  85         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  86
  87         LED_B_ON();
  88         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  89         LED_B_OFF();
  90
  91         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  92         LEDsoff();
  93 }
  94
  95 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  96
  97         bool turnOffField = (arg0 == 1);
  98
  99         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 100
 101         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 102
 103         clear_trace();
 104
 105         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 106                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
 107                 OnError(0);
 108                 return;
 109         };
 110
 111         if(!mifare_ultra_auth(keybytes)){
 112                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 113                 OnError(1);
 114                 return;
 115         }
 116
 117         if (turnOffField) {
 118                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 119                 LEDsoff();
 120         }
 121         cmd_send(CMD_ACK,1,0,0,0,0);
 122 }
 123
 124 // Arg0 = BlockNo,
 125 // Arg1 = UsePwd bool
 126 // datain = PWD bytes,
 127 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 128 {
 129         uint8_t blockNo = arg0;
 130         byte_t dataout[16] = {0x00};
 131         bool useKey = (arg1 == 1); //UL_C
 132         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 133
 134         LEDsoff();
 135         LED_A_ON();
 136         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 137
 138         clear_trace();
 139
 140         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
 141         if(!len) {
 142                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 143                 OnError(1);
 144                 return;
 145         }
 146
 147         // UL-C authentication
 148         if ( useKey ) {
 149                 uint8_t key[16] = {0x00};
 150                 memcpy(key, datain, sizeof(key) );
 151
 152                 if ( !mifare_ultra_auth(key) ) {
 153                         OnError(1);
 154                         return;
 155                 }
 156         }
 157
 158         // UL-EV1 / NTAG authentication
 159         if ( usePwd ) {
 160                 uint8_t pwd[4] = {0x00};
 161                 memcpy(pwd, datain, 4);
 162                 uint8_t pack[4] = {0,0,0,0};
 163                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 164                         OnError(1);
 165                         return;
 166                 }
 167         }
 168
 169         if( mifare_ultra_readblock(blockNo, dataout) ) {
 170                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 171                 OnError(2);
 172                 return;
 173         }
 174
 175         if( mifare_ultra_halt() ) {
 176                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 177                 OnError(3);
 178                 return;
 179         }
 180
 181         cmd_send(CMD_ACK,1,0,0,dataout,16);
 182         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 183         LEDsoff();
 184 }
 185
 186 //-----------------------------------------------------------------------------
 187 // Select, Authenticate, Read a MIFARE tag.
 188 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 189 //-----------------------------------------------------------------------------
 190 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 191 {
 192   // params
 193         uint8_t sectorNo = arg0;
 194         uint8_t keyType = arg1;
 195         uint64_t ui64Key = 0;
 196         ui64Key = bytes_to_num(datain, 6);
 197
 198         // variables
 199         byte_t isOK = 0;
 200         byte_t dataoutbuf[16 * 16];
 201         uint8_t uid[10];
 202         uint32_t cuid;
 203         struct Crypto1State mpcs = {0, 0};
 204         struct Crypto1State *pcs;
 205         pcs = &mpcs;
 206
 207         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 208
 209         clear_trace();
 210
 211         LED_A_ON();
 212         LED_B_OFF();
 213         LED_C_OFF();
 214
 215         isOK = 1;
 216         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 217                 isOK = 0;
 218                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 219         }
 220
 221
 222         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 223                 isOK = 0;
 224                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 225         }
 226
 227         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 228                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 229                         isOK = 0;
 230                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 231                         break;
 232                 }
 233         }
 234
 235         if(mifare_classic_halt(pcs, cuid)) {
 236                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 237         }
 238
 239         //  ----------------------------- crypto1 destroy
 240         crypto1_destroy(pcs);
 241
 242         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 243
 244         LED_B_ON();
 245         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 246         LED_B_OFF();
 247
 248         // Thats it...
 249         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 250         LEDsoff();
 251 }
 252
 253 // arg0 = blockNo (start)
 254 // arg1 = Pages (number of blocks)
 255 // arg2 = useKey
 256 // datain = KEY bytes
 257 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 258 {
 259         LEDsoff();
 260         LED_A_ON();
 261         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 262
 263         // free eventually allocated BigBuf memory
 264         BigBuf_free();
 265         clear_trace();
 266
 267         // params
 268         uint8_t blockNo = arg0;
 269         uint16_t blocks = arg1;
 270         bool useKey = (arg2 == 1); //UL_C
 271         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 272         uint32_t countblocks = 0;
 273         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 274         if (dataout == NULL){
 275                 Dbprintf("out of memory");
 276                 OnError(1);
 277                 return;
 278         }
 279
 280         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0, true);
 281         if (!len) {
 282                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 283                 OnError(1);
 284                 return;
 285         }
 286
 287         // UL-C authentication
 288         if ( useKey ) {
 289                 uint8_t key[16] = {0x00};
 290                 memcpy(key, datain, sizeof(key) );
 291
 292                 if ( !mifare_ultra_auth(key) ) {
 293                         OnError(1);
 294                         return;
 295                 }
 296         }
 297
 298         // UL-EV1 / NTAG authentication
 299         if (usePwd) {
 300                 uint8_t pwd[4] = {0x00};
 301                 memcpy(pwd, datain, sizeof(pwd));
 302                 uint8_t pack[4] = {0,0,0,0};
 303
 304                 if (!mifare_ul_ev1_auth(pwd, pack)){
 305                         OnError(1);
 306                         return;
 307                 }
 308         }
 309
 310         for (int i = 0; i < blocks; i++){
 311                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 312                         Dbprintf("Data exceeds buffer!!");
 313                         break;
 314                 }
 315
 316                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 317
 318                 if (len) {
 319                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 320                         // if no blocks read - error out
 321                         if (i==0){
 322                                 OnError(2);
 323                                 return;
 324                         } else {
 325                                 //stop at last successful read block and return what we got
 326                                 break;
 327                         }
 328                 } else {
 329                         countblocks++;
 330                 }
 331         }
 332
 333         len = mifare_ultra_halt();
 334         if (len) {
 335                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 336                 OnError(3);
 337                 return;
 338         }
 339
 340         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 341
 342         countblocks *= 4;
 343
 344         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 345         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 346         LEDsoff();
 347         BigBuf_free();
 348 }
 349
 350 //-----------------------------------------------------------------------------
 351 // Select, Authenticate, Write a MIFARE tag.
 352 // read block
 353 //-----------------------------------------------------------------------------
 354 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 355 {
 356         // params
 357         uint8_t blockNo = arg0;
 358         uint8_t keyType = arg1;
 359         uint64_t ui64Key = 0;
 360         byte_t blockdata[16];
 361
 362         ui64Key = bytes_to_num(datain, 6);
 363         memcpy(blockdata, datain + 10, 16);
 364
 365         // variables
 366         byte_t isOK = 0;
 367         uint8_t uid[10];
 368         uint32_t cuid;
 369         struct Crypto1State mpcs = {0, 0};
 370         struct Crypto1State *pcs;
 371         pcs = &mpcs;
 372
 373         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 374
 375         clear_trace();
 376
 377         LED_A_ON();
 378         LED_B_OFF();
 379         LED_C_OFF();
 380
 381         while (true) {
 382                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 383                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 384                         break;
 385                 };
 386
 387                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
 388                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 389                         break;
 390                 };
 391
 392                 if(mifare_classic_writeblock(pcs, cuid, blockNo, blockdata)) {
 393                         if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 394                         break;
 395                 };
 396
 397                 if(mifare_classic_halt(pcs, cuid)) {
 398                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 399                         break;
 400                 };
 401
 402                 isOK = 1;
 403                 break;
 404         }
 405
 406         //  ----------------------------- crypto1 destroy
 407         crypto1_destroy(pcs);
 408
 409         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 410
 411         LED_B_ON();
 412         cmd_send(CMD_ACK,isOK,0,0,0,0);
 413         LED_B_OFF();
 414
 415
 416         // Thats it...
 417         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 418         LEDsoff();
 419 }
 420
 421 /* // Command not needed but left for future testing
 422 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 423 {
 424         uint8_t blockNo = arg0;
 425         byte_t blockdata[16] = {0x00};
 426
 427         memcpy(blockdata, datain, 16);
 428
 429         uint8_t uid[10] = {0x00};
 430
 431         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 432
 433         clear_trace();
 434         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 435
 436         if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {
 437                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 438                 OnError(0);
 439                 return;
 440         };
 441
 442         if(mifare_ultra_writeblock_compat(blockNo, blockdata)) {
 443                 if (MF_DBGLEVEL >= 1)   Dbprintf("Write block error");
 444                 OnError(0);
 445                 return; };
 446
 447         if(mifare_ultra_halt()) {
 448                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 449                 OnError(0);
 450                 return;
 451         };
 452
 453         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 454
 455         cmd_send(CMD_ACK,1,0,0,0,0);
 456         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 457         LEDsoff();
 458 }
 459 */
 460
 461 // Arg0   : Block to write to.
 462 // Arg1   : 0 = use no authentication.
 463 //          1 = use 0x1A authentication.
 464 //          2 = use 0x1B authentication.
 465 // datain : 4 first bytes is data to be written.
 466 //        : 4/16 next bytes is authentication key.
 467 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 468 {
 469         uint8_t blockNo = arg0;
 470         bool useKey = (arg1 == 1); //UL_C
 471         bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 472         byte_t blockdata[4] = {0x00};
 473
 474         memcpy(blockdata, datain,4);
 475
 476         LEDsoff();
 477         LED_A_ON();
 478         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 479
 480         clear_trace();
 481
 482         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 483                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 484                 OnError(0);
 485                 return;
 486         };
 487
 488         // UL-C authentication
 489         if ( useKey ) {
 490                 uint8_t key[16] = {0x00};
 491                 memcpy(key, datain+4, sizeof(key) );
 492
 493                 if ( !mifare_ultra_auth(key) ) {
 494                         OnError(1);
 495                         return;
 496                 }
 497         }
 498
 499         // UL-EV1 / NTAG authentication
 500         if (usePwd) {
 501                 uint8_t pwd[4] = {0x00};
 502                 memcpy(pwd, datain+4, 4);
 503                 uint8_t pack[4] = {0,0,0,0};
 504                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 505                         OnError(1);
 506                         return;
 507                 }
 508         }
 509
 510         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 511                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 512                 OnError(0);
 513                 return;
 514         };
 515
 516         if(mifare_ultra_halt()) {
 517                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 518                 OnError(0);
 519                 return;
 520         };
 521
 522         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 523
 524         cmd_send(CMD_ACK,1,0,0,0,0);
 525         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 526         LEDsoff();
 527 }
 528
 529 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 530
 531         uint8_t pwd[16] = {0x00};
 532         byte_t blockdata[4] = {0x00};
 533
 534         memcpy(pwd, datain, 16);
 535
 536         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 537         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 538
 539         clear_trace();
 540
 541         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0, true)) {
 542                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 543                 OnError(0);
 544                 return;
 545         };
 546
 547         blockdata[0] = pwd[7];
 548         blockdata[1] = pwd[6];
 549         blockdata[2] = pwd[5];
 550         blockdata[3] = pwd[4];
 551         if(mifare_ultra_writeblock( 44, blockdata)) {
 552                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 553                 OnError(44);
 554                 return;
 555         };
 556
 557         blockdata[0] = pwd[3];
 558         blockdata[1] = pwd[2];
 559         blockdata[2] = pwd[1];
 560         blockdata[3] = pwd[0];
 561         if(mifare_ultra_writeblock( 45, blockdata)) {
 562                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 563                 OnError(45);
 564                 return;
 565         };
 566
 567         blockdata[0] = pwd[15];
 568         blockdata[1] = pwd[14];
 569         blockdata[2] = pwd[13];
 570         blockdata[3] = pwd[12];
 571         if(mifare_ultra_writeblock( 46, blockdata)) {
 572                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 573                 OnError(46);
 574                 return;
 575         };
 576
 577         blockdata[0] = pwd[11];
 578         blockdata[1] = pwd[10];
 579         blockdata[2] = pwd[9];
 580         blockdata[3] = pwd[8];
 581         if(mifare_ultra_writeblock( 47, blockdata)) {
 582                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 583                 OnError(47);
 584                 return;
 585         };
 586
 587         if(mifare_ultra_halt()) {
 588                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 589                 OnError(0);
 590                 return;
 591         };
 592
 593         cmd_send(CMD_ACK,1,0,0,0,0);
 594         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 595         LEDsoff();
 596 }
 597
 598 // Return 1 if the nonce is invalid else return 0
 599 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 600         return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 601         (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 602         (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 603 }
 604
 605
 606 //-----------------------------------------------------------------------------
 607 // acquire encrypted nonces in order to perform the attack described in
 608 // Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
 609 // Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
 610 // Computer and Communications Security, 2015
 611 //-----------------------------------------------------------------------------
 612 void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain)
 613 {
 614         uint64_t ui64Key = 0;
 615         uint8_t uid[10];
 616         uint32_t cuid;
 617         uint8_t cascade_levels = 0;
 618         struct Crypto1State mpcs = {0, 0};
 619         struct Crypto1State *pcs;
 620         pcs = &mpcs;
 621         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 622         int16_t isOK = 0;
 623         uint8_t par_enc[1];
 624         uint8_t nt_par_enc = 0;
 625         uint8_t buf[USB_CMD_DATA_SIZE];
 626         uint32_t timeout;
 627
 628         uint8_t blockNo = arg0 & 0xff;
 629         uint8_t keyType = (arg0 >> 8) & 0xff;
 630         uint8_t targetBlockNo = arg1 & 0xff;
 631         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 632         ui64Key = bytes_to_num(datain, 6);
 633         bool initialize = flags & 0x0001;
 634         bool slow = flags & 0x0002;
 635         bool field_off = flags & 0x0004;
 636
 637         LED_A_ON();
 638         LED_C_OFF();
 639
 640         if (initialize) {
 641                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 642                 clear_trace();
 643                 set_tracing(true);
 644         }
 645
 646         LED_C_ON();
 647
 648         uint16_t num_nonces = 0;
 649         bool have_uid = false;
 650         for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {
 651
 652                 // Test if the action was cancelled
 653                 if(BUTTON_PRESS()) {
 654                         isOK = 2;
 655                         field_off = true;
 656                         break;
 657                 }
 658
 659                 if (!have_uid) { // need a full select cycle to get the uid first
 660                         iso14a_card_select_t card_info;
 661                         if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0, true)) {
 662                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (ALL)");
 663                                 continue;
 664                         }
 665                         switch (card_info.uidlen) {
 666                                 case 4 : cascade_levels = 1; break;
 667                                 case 7 : cascade_levels = 2; break;
 668                                 case 10: cascade_levels = 3; break;
 669                                 default: break;
 670                         }
 671                         have_uid = true;
 672                 } else { // no need for anticollision. We can directly select the card
 673                         if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels, true)) {
 674                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (UID)");
 675                                 continue;
 676                         }
 677                 }
 678
 679                 if (slow) {
 680                         timeout = GetCountSspClk() + PRE_AUTHENTICATION_LEADTIME;
 681                         while(GetCountSspClk() < timeout);
 682                 }
 683
 684                 uint32_t nt1;
 685                 if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL)) {
 686                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth1 error");
 687                         continue;
 688                 }
 689
 690                 // nested authentication
 691                 uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);
 692                 if (len != 4) {
 693                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth2 error len=%d", len);
 694                         continue;
 695                 }
 696
 697                 // send a dummy byte as reader response in order to trigger the cards authentication timeout
 698                 uint8_t dummy_answer = 0;
 699                 ReaderTransmit(&dummy_answer, 1, NULL);
 700                 timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
 701
 702                 num_nonces++;
 703                 if (num_nonces % 2) {
 704                         memcpy(buf+i, receivedAnswer, 4);
 705                         nt_par_enc = par_enc[0] & 0xf0;
 706                 } else {
 707                         nt_par_enc |= par_enc[0] >> 4;
 708                         memcpy(buf+i+4, receivedAnswer, 4);
 709                         memcpy(buf+i+8, &nt_par_enc, 1);
 710                         i += 9;
 711                 }
 712
 713                 // wait for the card to become ready again
 714                 while(GetCountSspClk() < timeout);
 715
 716         }
 717
 718         LED_C_OFF();
 719
 720         crypto1_destroy(pcs);
 721
 722         LED_B_ON();
 723         cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
 724         LED_B_OFF();
 725
 726         if (MF_DBGLEVEL >= 3)   DbpString("AcquireEncryptedNonces finished");
 727
 728         if (field_off) {
 729                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 730                 LEDsoff();
 731         }
 732 }
 733
 734
 735 //-----------------------------------------------------------------------------
 736 // MIFARE nested authentication.
 737 //
 738 //-----------------------------------------------------------------------------
 739 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t calibrate, uint8_t *datain)
 740 {
 741         // params
 742         uint8_t blockNo = arg0 & 0xff;
 743         uint8_t keyType = (arg0 >> 8) & 0xff;
 744         uint8_t targetBlockNo = arg1 & 0xff;
 745         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 746         uint64_t ui64Key = 0;
 747
 748         ui64Key = bytes_to_num(datain, 6);
 749
 750         // variables
 751         uint16_t rtr, i, j, len;
 752         uint16_t davg;
 753         static uint16_t dmin, dmax;
 754         uint8_t uid[10];
 755         uint32_t cuid, nt1, nt2, nttmp, nttest, ks1;
 756         uint8_t par[1];
 757         uint32_t target_nt[2], target_ks[2];
 758
 759         uint8_t par_array[4];
 760         uint16_t ncount = 0;
 761         struct Crypto1State mpcs = {0, 0};
 762         struct Crypto1State *pcs;
 763         pcs = &mpcs;
 764         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
 765
 766         uint32_t auth1_time, auth2_time;
 767         static uint16_t delta_time;
 768
 769         LED_A_ON();
 770         LED_C_OFF();
 771         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 772
 773         // free eventually allocated BigBuf memory
 774         BigBuf_free();
 775
 776         if (calibrate) clear_trace();
 777         set_tracing(true);
 778
 779         // statistics on nonce distance
 780         int16_t isOK = 0;
 781         #define NESTED_MAX_TRIES 12
 782         uint16_t unsuccessfull_tries = 0;
 783         if (calibrate) {        // for first call only. Otherwise reuse previous calibration
 784                 LED_B_ON();
 785                 WDT_HIT();
 786
 787                 davg = dmax = 0;
 788                 dmin = 2000;
 789                 delta_time = 0;
 790
 791                 for (rtr = 0; rtr < 17; rtr++) {
 792
 793                         // Test if the action was cancelled
 794                         if(BUTTON_PRESS()) {
 795                                 isOK = -2;
 796                                 break;
 797                         }
 798
 799                         // prepare next select. No need to power down the card.
 800                         if(mifare_classic_halt(pcs, cuid)) {
 801                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 802                                 rtr--;
 803                                 continue;
 804                         }
 805
 806                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 807                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 808                                 rtr--;
 809                                 continue;
 810                         };
 811
 812                         auth1_time = 0;
 813                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 814                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 815                                 rtr--;
 816                                 continue;
 817                         };
 818
 819                         if (delta_time) {
 820                                 auth2_time = auth1_time + delta_time;
 821                         } else {
 822                                 auth2_time = 0;
 823                         }
 824                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 825                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 826                                 rtr--;
 827                                 continue;
 828                         };
 829
 830                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 831                         for (i = 101; i < 1200; i++) {
 832                                 nttmp = prng_successor(nttmp, 1);
 833                                 if (nttmp == nt2) break;
 834                         }
 835
 836                         if (i != 1200) {
 837                                 if (rtr != 0) {
 838                                         davg += i;
 839                                         dmin = MIN(dmin, i);
 840                                         dmax = MAX(dmax, i);
 841                                 }
 842                                 else {
 843                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 844                                 }
 845                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 846                         } else {
 847                                 unsuccessfull_tries++;
 848                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 849                                         isOK = -3;
 850                                 }
 851                         }
 852                 }
 853
 854                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 855
 856                 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);
 857
 858                 dmin = davg - 2;
 859                 dmax = davg + 2;
 860
 861                 LED_B_OFF();
 862
 863         }
 864         //  -------------------------------------------------------------------------------------------------
 865
 866         LED_C_ON();
 867
 868         //  get crypted nonces for target sector
 869         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 870
 871                 target_nt[i] = 0;
 872                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 873
 874                         // prepare next select. No need to power down the card.
 875                         if(mifare_classic_halt(pcs, cuid)) {
 876                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 877                                 continue;
 878                         }
 879
 880                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
 881                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 882                                 continue;
 883                         };
 884
 885                         auth1_time = 0;
 886                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 887                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 888                                 continue;
 889                         };
 890
 891                         // nested authentication
 892                         auth2_time = auth1_time + delta_time;
 893                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 894                         if (len != 4) {
 895                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 896                                 continue;
 897                         };
 898
 899                         nt2 = bytes_to_num(receivedAnswer, 4);
 900                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 901
 902                         // Parity validity check
 903                         for (j = 0; j < 4; j++) {
 904                                 par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 905                         }
 906
 907                         ncount = 0;
 908                         nttest = prng_successor(nt1, dmin - 1);
 909                         for (j = dmin; j < dmax + 1; j++) {
 910                                 nttest = prng_successor(nttest, 1);
 911                                 ks1 = nt2 ^ nttest;
 912
 913                                 if (valid_nonce(nttest, nt2, ks1, par_array)){
 914                                         if (ncount > 0) {               // we are only interested in disambiguous nonces, try again
 915                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (ambigous), ntdist=%d", i+1, j);
 916                                                 target_nt[i] = 0;
 917                                                 break;
 918                                         }
 919                                         target_nt[i] = nttest;
 920                                         target_ks[i] = ks1;
 921                                         ncount++;
 922                                         if (i == 1 && target_nt[1] == target_nt[0]) { // we need two different nonces
 923                                                 target_nt[i] = 0;
 924                                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#2: dismissed (= nonce#1), ntdist=%d", j);
 925                                                 break;
 926                                         }
 927                                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: valid, ntdist=%d", i+1, j);
 928                                 }
 929                         }
 930                         if (target_nt[i] == 0 && j == dmax+1 && MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: dismissed (all invalid)", i+1);
 931                 }
 932         }
 933
 934         LED_C_OFF();
 935
 936         //  ----------------------------- crypto1 destroy
 937         crypto1_destroy(pcs);
 938
 939         byte_t buf[4 + 4 * 4];
 940         memcpy(buf, &cuid, 4);
 941         memcpy(buf+4, &target_nt[0], 4);
 942         memcpy(buf+8, &target_ks[0], 4);
 943         memcpy(buf+12, &target_nt[1], 4);
 944         memcpy(buf+16, &target_ks[1], 4);
 945
 946         LED_B_ON();
 947         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 948         LED_B_OFF();
 949
 950         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 951
 952         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 953         LEDsoff();
 954 }
 955
 956 //-----------------------------------------------------------------------------
 957 // MIFARE check keys. key count up to 85.
 958 //
 959 //-----------------------------------------------------------------------------
 960 void MifareChkKeys(uint16_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 961 {
 962         uint8_t blockNo = arg0 & 0xff;
 963         uint8_t keyType = (arg0 >> 8) & 0xff;
 964         bool clearTrace = arg1 & 0x01;
 965         bool multisectorCheck = arg1 & 0x02;
 966         uint8_t set14aTimeout = (arg1 >> 8) & 0xff;
 967         uint8_t keyCount = arg2;
 968
 969         // clear debug level
 970         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 971         MF_DBGLEVEL = MF_DBG_NONE;
 972
 973         LED_A_ON();
 974         LED_B_OFF();
 975         LED_C_OFF();
 976         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 977
 978         if (clearTrace) clear_trace();
 979         set_tracing(true);
 980
 981         if (set14aTimeout){
 982                 iso14a_set_timeout(set14aTimeout * 10); // timeout: ms = x/106  35-minimum, 50-OK 106-recommended 500-safe
 983         }
 984
 985         if (multisectorCheck) {
 986                 TKeyIndex keyIndex = {{0}};
 987                 uint8_t sectorCnt = blockNo;
 988                 int res = MifareMultisectorChk(datain, keyCount, sectorCnt, keyType, OLD_MF_DBGLEVEL, &keyIndex);
 989
 990                 LED_B_ON();
 991                 if (res >= 0) {
 992                         cmd_send(CMD_ACK, 1, 0, 0, keyIndex, 80);
 993                 } else {
 994                         cmd_send(CMD_ACK, 0, 0, 0, NULL, 0);
 995                 }
 996                 LED_B_OFF();
 997         } else {
 998                 int res = MifareChkBlockKeys(datain, keyCount, blockNo, keyType, OLD_MF_DBGLEVEL);
 999
1000                 LED_B_ON();
1001                 if (res > 0) {
1002                         cmd_send(CMD_ACK, 1, 0, 0, datain + (res - 1) * 6, 6);
1003                 } else {
1004                         cmd_send(CMD_ACK, 0, 0, 0, NULL, 0);
1005                 }
1006                 LED_B_OFF();
1007         }
1008
1009         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1010         LEDsoff();
1011
1012         // restore debug level
1013         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1014 }
1015
1016 //-----------------------------------------------------------------------------
1017 // MIFARE commands set debug level
1018 //
1019 //-----------------------------------------------------------------------------
1020 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1021         MF_DBGLEVEL = arg0;
1022         Dbprintf("Debug level: %d", MF_DBGLEVEL);
1023 }
1024
1025 //-----------------------------------------------------------------------------
1026 // Work with emulator memory
1027 //
1028 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1029 // involved in dealing with emulator memory. But if it is called later, it might
1030 // destroy the Emulator Memory.
1031 //-----------------------------------------------------------------------------
1032
1033 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1034         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1035         emlClearMem();
1036 }
1037
1038 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1039         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1040         emlSetMem(datain, arg0, arg1); // data, block num, blocks count
1041 }
1042
1043 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1044         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1045         byte_t buf[USB_CMD_DATA_SIZE];
1046         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1047
1048         LED_B_ON();
1049         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1050         LED_B_OFF();
1051 }
1052
1053 //-----------------------------------------------------------------------------
1054 // Load a card into the emulator memory
1055 //
1056 //-----------------------------------------------------------------------------
1057 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1058         uint8_t numSectors = arg0;
1059         uint8_t keyType = arg1;
1060         uint64_t ui64Key = 0;
1061         uint32_t cuid;
1062         struct Crypto1State mpcs = {0, 0};
1063         struct Crypto1State *pcs;
1064         pcs = &mpcs;
1065
1066         // variables
1067         byte_t dataoutbuf[16];
1068         byte_t dataoutbuf2[16];
1069         uint8_t uid[10];
1070
1071         LED_A_ON();
1072         LED_B_OFF();
1073         LED_C_OFF();
1074         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1075
1076         clear_trace();
1077         set_tracing(false);
1078
1079         bool isOK = true;
1080
1081         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1082                 isOK = false;
1083                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1084         }
1085
1086         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1087                 ui64Key = emlGetKey(sectorNo, keyType);
1088                 if (sectorNo == 0){
1089                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1090                                 isOK = false;
1091                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
1092                                 break;
1093                         }
1094                 } else {
1095                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1096                                 isOK = false;
1097                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1098                                 break;
1099                         }
1100                 }
1101
1102                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1103                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1104                                 isOK = false;
1105                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1106                                 break;
1107                         };
1108                         if (isOK) {
1109                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1110                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1111                                 } else {        // sector trailer, keep the keys, set only the AC
1112                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1113                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1114                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
1115                                 }
1116                         }
1117                 }
1118
1119         }
1120
1121         if(mifare_classic_halt(pcs, cuid)) {
1122                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
1123         };
1124
1125         //  ----------------------------- crypto1 destroy
1126         crypto1_destroy(pcs);
1127
1128         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1129         LEDsoff();
1130
1131         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1132
1133 }
1134
1135
1136 //-----------------------------------------------------------------------------
1137 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1138 //
1139 //-----------------------------------------------------------------------------
1140
1141 static bool isBlockTrailer(int blockN) {
1142         if (blockN >= 0 && blockN < 128) {
1143                 return ((blockN & 0x03) == 0x03);
1144         }
1145         if (blockN >= 128 && blockN <= 256) {
1146                 return ((blockN & 0x0F) == 0x0F);
1147         }
1148         return FALSE;
1149 }
1150
1151 void MifareCWipe(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1152         // var
1153         byte_t isOK = 0;
1154         uint32_t numBlocks = arg0;
1155         // cmdParams:
1156         // bit 0 - wipe gen1a
1157         // bit 1 - fill card with default data
1158         // bit 2 - gen1a = 0, gen1b = 1
1159         uint8_t cmdParams = arg1;
1160         bool needWipe = cmdParams & 0x01;
1161         bool needFill = cmdParams & 0x02;
1162         bool gen1b = cmdParams & 0x04;
1163
1164         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1165         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1166
1167         uint8_t block0[16] = {0x01, 0x02, 0x03, 0x04, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0xAF};
1168         uint8_t block1[16] = {0x00};
1169         uint8_t blockK[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x08, 0x77, 0x8F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
1170         uint8_t d_block[18] = {0x00};
1171
1172         // card commands
1173         uint8_t wupC1[]       = { 0x40 };
1174         uint8_t wupC2[]       = { 0x43 };
1175         uint8_t wipeC[]       = { 0x41 };
1176
1177         // iso14443 setup
1178         LED_A_ON();
1179         LED_B_OFF();
1180         LED_C_OFF();
1181         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1182
1183         // tracing
1184         clear_trace();
1185         set_tracing(true);
1186
1187         while (true){
1188                 // wipe
1189                 if (needWipe){
1190                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1191                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1192                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1193                                 break;
1194                         };
1195
1196                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1197                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1198                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1199                                 break;
1200                         };
1201
1202                         if(mifare_classic_halt(NULL, 0)) {
1203                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1204                         };
1205                 };
1206
1207                 // put default data
1208                 if (needFill){
1209                         // select commands
1210                         ReaderTransmitBitsPar(wupC1, 7, 0, NULL);
1211
1212                         // gen1b magic tag : do no issue wupC2 and don't expect 0x0a response after SELECT_UID (after getting UID from chip in 'hf mf csetuid' command)
1213                         if (!gen1b) {
1214
1215                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1216                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1217                                         break;
1218                                 };
1219
1220                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1221                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1222                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1223                                         break;
1224                                 };
1225                         }
1226
1227                         // send blocks command
1228                         for (int blockNo = 0; blockNo < numBlocks; blockNo++) {
1229                                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1230                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1231                                         break;
1232                                 };
1233
1234                                 // check type of block and add crc
1235                                 if (!isBlockTrailer(blockNo)){
1236                                         memcpy(d_block, block1, 16);
1237                                 } else {
1238                                         memcpy(d_block, blockK, 16);
1239                                 }
1240                                 if (blockNo == 0) {
1241                                         memcpy(d_block, block0, 16);
1242                                 }
1243                                 AppendCrc14443a(d_block, 16);
1244
1245                                 // send write command
1246                                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1247                                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1248                                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1249                                         break;
1250                                 };
1251                         }
1252
1253                         // halt
1254                         // do no issue halt command for gen1b
1255                         if (!gen1b) {
1256                                 if (mifare_classic_halt(NULL, 0)) {
1257                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1258                                                 break;
1259                                 }
1260                         }
1261                 }
1262                 break;
1263         }
1264
1265         // send USB response
1266         LED_B_ON();
1267         cmd_send(CMD_ACK,isOK,0,0,NULL,0);
1268         LED_B_OFF();
1269
1270         // reset fpga
1271         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1272         LEDsoff();
1273
1274         return;
1275 }
1276
1277 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1278
1279   // params
1280         uint8_t needWipe = arg0;
1281         // bit 0 - need get UID
1282         // bit 1 - need wupC
1283         // bit 2 - need HALT after sequence
1284         // bit 3 - need init FPGA and field before sequence
1285         // bit 4 - need reset FPGA and LED
1286         // bit 6 - gen1b backdoor type
1287         uint8_t workFlags = arg1;
1288         uint8_t blockNo = arg2;
1289
1290         // card commands
1291         uint8_t wupC1[]       = { 0x40 };
1292         uint8_t wupC2[]       = { 0x43 };
1293         uint8_t wipeC[]       = { 0x41 };
1294
1295         // variables
1296         byte_t isOK = 0;
1297         uint8_t uid[10] = {0x00};
1298         uint8_t d_block[18] = {0x00};
1299         uint32_t cuid;
1300
1301         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1302         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1303
1304         // reset FPGA and LED
1305         if (workFlags & 0x08) {
1306                 LED_A_ON();
1307                 LED_B_OFF();
1308                 LED_C_OFF();
1309                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1310
1311                 clear_trace();
1312                 set_tracing(true);
1313         }
1314
1315         while (true) {
1316
1317                 // get UID from chip
1318                 if (workFlags & 0x01) {
1319                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) {
1320                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1321                                 // Continue, if we set wrong UID or wrong UID checksum or some ATQA or SAK we will can't select card. But we need to write block 0 to make card work.
1322                                 //break;
1323                                 };
1324
1325                                 if(mifare_classic_halt(NULL, cuid)) {
1326                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1327                                         // Continue, some magic tags misbehavies and send an answer to it.
1328                                         // break;
1329                                 };
1330                 };
1331
1332                 // reset chip
1333                 // Wipe command don't work with gen1b
1334                 if (needWipe && !(workFlags & 0x40)){
1335                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1336                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1337                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1338                                 break;
1339                         };
1340
1341                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1342                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1343                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wipeC error");
1344                                 break;
1345                         };
1346
1347                         if(mifare_classic_halt(NULL, 0)) {
1348                                 if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1349                                 // Continue, some magic tags misbehavies and send an answer to it.
1350                                 // break;
1351                         };
1352                 };
1353
1354                 // write block
1355                 if (workFlags & 0x02) {
1356                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1357
1358                         // gen1b magic tag : do no issue wupC2 and don't expect 0x0a response after SELECT_UID (after getting UID from chip in 'hf mf csetuid' command)
1359                         if (!(workFlags & 0x40)) {
1360
1361                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1362                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1363                                         break;
1364                                 };
1365
1366                                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1367                                 if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1368                                         if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1369                                         break;
1370                                 };
1371                         }
1372                 }
1373
1374                 if ((mifare_sendcmd_short(NULL, 0, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1375                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send command error");
1376                         break;
1377                 };
1378
1379                 memcpy(d_block, datain, 16);
1380                 AppendCrc14443a(d_block, 16);
1381
1382                 ReaderTransmit(d_block, sizeof(d_block), NULL);
1383                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1384                         if (MF_DBGLEVEL >= 1)   Dbprintf("write block send data error");
1385                         break;
1386                 };
1387
1388                 if (workFlags & 0x04) {
1389                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1390                         if (!(workFlags & 0x40)) {
1391                                 if (mifare_classic_halt(NULL, 0)) {
1392                                         if (MF_DBGLEVEL > 2)    Dbprintf("Halt error");
1393                                         // Continue, some magic tags misbehavies and send an answer to it.
1394                                         // break;
1395                                 }
1396                         }
1397                 }
1398
1399                 isOK = 1;
1400                 break;
1401         }
1402
1403         LED_B_ON();
1404         cmd_send(CMD_ACK,isOK,0,0,uid,4);
1405         LED_B_OFF();
1406
1407         if ((workFlags & 0x10) || (!isOK)) {
1408                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1409                 LEDsoff();
1410         }
1411 }
1412
1413
1414 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1415
1416         // params
1417         // bit 1 - need wupC
1418         // bit 2 - need HALT after sequence
1419         // bit 3 - need init FPGA and field before sequence
1420         // bit 4 - need reset FPGA and LED
1421         // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1422         // bit 6 - gen1b backdoor type
1423         uint8_t workFlags = arg0;
1424         uint8_t blockNo = arg2;
1425
1426         // card commands
1427         uint8_t wupC1[]       = { 0x40 };
1428         uint8_t wupC2[]       = { 0x43 };
1429
1430         // variables
1431         byte_t isOK = 0;
1432         uint8_t data[18] = {0x00};
1433         uint32_t cuid = 0;
1434
1435         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1436         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1437
1438         if (workFlags & 0x08) {
1439                 LED_A_ON();
1440                 LED_B_OFF();
1441                 LED_C_OFF();
1442                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1443
1444                 clear_trace();
1445                 set_tracing(true);
1446         }
1447
1448         while (true) {
1449                 if (workFlags & 0x02) {
1450                         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1451                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1452                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC1 error");
1453                                 break;
1454                 };
1455                 // do no issue for gen1b magic tag
1456                 if (!(workFlags & 0x40)) {
1457                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1458                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1459                                 if (MF_DBGLEVEL >= 1)   Dbprintf("wupC2 error");
1460                                 break;
1461                         };
1462                 }
1463         }
1464
1465                 // read block
1466                 if ((mifare_sendcmd_short(NULL, 0, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1467                         if (MF_DBGLEVEL >= 1)   Dbprintf("read block send command error");
1468                         break;
1469                 };
1470                 memcpy(data, receivedAnswer, 18);
1471
1472                 if (workFlags & 0x04) {
1473                         // do no issue halt command for gen1b magic tag (#db# halt error. response len: 1)
1474                         if (!(workFlags & 0x40)) {
1475                                 if (mifare_classic_halt(NULL, cuid)) {
1476                                         if (MF_DBGLEVEL > 1)    Dbprintf("Halt error");
1477                                         // Continue, some magic tags misbehavies and send an answer to it.
1478                                         //              break;
1479                                 }
1480                         }
1481                 }
1482
1483                 isOK = 1;
1484                 break;
1485         }
1486
1487         LED_B_ON();
1488         if (workFlags & 0x20) {
1489                 if (isOK)
1490                         memcpy(datain, data, 18);
1491         }
1492         else
1493                 cmd_send(CMD_ACK,isOK,0,0,data,18);
1494         LED_B_OFF();
1495
1496         if ((workFlags & 0x10) || (!isOK)) {
1497                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1498                 LEDsoff();
1499         }
1500 }
1501
1502 void MifareCIdent(){
1503
1504         // card commands
1505         uint8_t wupC1[]       = { 0x40 };
1506         uint8_t wupC2[]       = { 0x43 };
1507
1508         // variables
1509         byte_t isOK = 0;
1510
1511         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
1512         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
1513
1514         ReaderTransmitBitsPar(wupC1,7,0, NULL);
1515         if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == 0x0a)) {
1516                 isOK = 2;
1517
1518                 ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1519                 if(ReaderReceive(receivedAnswer, receivedAnswerPar) && (receivedAnswer[0] == 0x0a)) {
1520                         isOK = 1;
1521                 };
1522         };
1523
1524         // From iceman1001: removed the if,  since some magic tags misbehavies and send an answer to it.
1525         mifare_classic_halt(NULL, 0);
1526
1527         cmd_send(CMD_ACK,isOK,0,0,0,0);
1528 }
1529
1530 //
1531 // DESFIRE
1532 //
1533
1534 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1535
1536         byte_t dataout[11] = {0x00};
1537         uint8_t uid[10] = {0x00};
1538         uint32_t cuid;
1539
1540         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1541         clear_trace();
1542
1543         int len = iso14443a_select_card(uid, NULL, &cuid, true, 0, true);
1544         if(!len) {
1545                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1546                 OnError(1);
1547                 return;
1548         };
1549
1550         if(mifare_desfire_des_auth1(cuid, dataout)){
1551                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1552                 OnError(4);
1553                 return;
1554         }
1555
1556         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1557     cmd_send(CMD_ACK,1,cuid,0,dataout, sizeof(dataout));
1558 }
1559
1560 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1561
1562         uint32_t cuid = arg0;
1563         uint8_t key[16] = {0x00};
1564         byte_t isOK = 0;
1565         byte_t dataout[12] = {0x00};
1566
1567         memcpy(key, datain, 16);
1568
1569         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1570
1571         if( isOK) {
1572                 if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1573                 OnError(4);
1574                 return;
1575         }
1576
1577         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1578
1579         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1580         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1581         LEDsoff();
1582 }
1583
1584 void OnSuccess(){
1585         pcb_blocknum = 0;
1586         ReaderTransmit(deselect_cmd, 3 , NULL);
1587         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1588         LEDsoff();
1589 }
1590
1591 void OnError(uint8_t reason){
1592         pcb_blocknum = 0;
1593         ReaderTransmit(deselect_cmd, 3 , NULL);
1594         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1595         cmd_send(CMD_ACK,0,reason,0,0,0);
1596         LEDsoff();
1597 }