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 2014,2015,2016
   8 //
   9 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
  10 // at your option, any later version. See the LICENSE.txt file for the text of
  11 // the license.
  12 //-----------------------------------------------------------------------------
  13 // Routines to support ISO 14443 type A.
  14 //-----------------------------------------------------------------------------
  15
  16 #include "mifarecmd.h"
  17 #include "apps.h"
  18 #include "util.h"
  19 #include "crc.h"
  20 #include "protocols.h"
  21 #include "parity.h"
  22
  23 //-----------------------------------------------------------------------------
  24 // Select, Authenticate, Read a MIFARE tag.
  25 // read block
  26 //-----------------------------------------------------------------------------
  27 void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
  28 {
  29   // params
  30         uint8_t blockNo = arg0;
  31         uint8_t keyType = arg1;
  32         uint64_t ui64Key = 0;
  33         ui64Key = bytes_to_num(datain, 6);
  34
  35         // variables
  36         byte_t isOK = 0;
  37         byte_t dataoutbuf[16] = {0x00};
  38         uint8_t uid[10] = {0x00};
  39         uint32_t cuid = 0;
  40         struct Crypto1State mpcs = {0, 0};
  41         struct Crypto1State *pcs;
  42         pcs = &mpcs;
  43
  44         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  45
  46         clear_trace();
  47         set_tracing(true);
  48
  49         LED_A_ON();
  50         LED_B_OFF();
  51         LED_C_OFF();
  52
  53         while (true) {
  54                 if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
  55                         if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
  56                         break;
  57                 };
  58
  59                 if(mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
  60                         if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
  61                         break;
  62                 };
  63
  64                 if(mifare_classic_readblock(pcs, cuid, blockNo, dataoutbuf)) {
  65                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read block error");
  66                         break;
  67                 };
  68
  69                 if(mifare_classic_halt(pcs, cuid)) {
  70                         if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
  71                         break;
  72                 };
  73
  74                 isOK = 1;
  75                 break;
  76         }
  77
  78         crypto1_destroy(pcs);
  79
  80         if (MF_DBGLEVEL >= 2)   DbpString("READ BLOCK FINISHED");
  81
  82         LED_B_ON();
  83         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16);
  84         LED_B_OFF();
  85
  86         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
  87         LEDsoff();
  88 }
  89
  90 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
  91
  92         bool turnOffField = (arg0 == 1);
  93
  94         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
  95
  96         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
  97
  98         clear_trace();
  99         set_tracing(true);
 100
 101         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
 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         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 133
 134         clear_trace();
 135         set_tracing(true);
 136
 137         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);
 138         if(!len) {
 139                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);
 140                 OnError(1);
 141                 return;
 142         }
 143
 144         // UL-C authentication
 145         if ( useKey ) {
 146                 uint8_t key[16] = {0x00};
 147                 memcpy(key, datain, sizeof(key) );
 148
 149                 if ( !mifare_ultra_auth(key) ) {
 150                         OnError(1);
 151                         return;
 152                 }
 153         }
 154
 155         // UL-EV1 / NTAG authentication
 156         if ( usePwd ) {
 157                 uint8_t pwd[4] = {0x00};
 158                 memcpy(pwd, datain, 4);
 159                 uint8_t pack[4] = {0,0,0,0};
 160                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 161                         OnError(1);
 162                         return;
 163                 }
 164         }
 165
 166         if( mifare_ultra_readblock(blockNo, dataout) ) {
 167                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block error");
 168                 OnError(2);
 169                 return;
 170         }
 171
 172         if( mifare_ultra_halt() ) {
 173                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 174                 OnError(3);
 175                 return;
 176         }
 177
 178     cmd_send(CMD_ACK,1,0,0,dataout,16);
 179         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 180         LEDsoff();
 181 }
 182
 183 //-----------------------------------------------------------------------------
 184 // Select, Authenticate, Read a MIFARE tag.
 185 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 186 //-----------------------------------------------------------------------------
 187 void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 188 {
 189   // params
 190         uint8_t sectorNo = arg0;
 191         uint8_t keyType = arg1;
 192         uint64_t ui64Key = 0;
 193         ui64Key = bytes_to_num(datain, 6);
 194
 195         // variables
 196         byte_t isOK = 0;
 197         byte_t dataoutbuf[16 * 16];
 198         uint8_t uid[10] = {0x00};
 199         uint32_t cuid = 0;
 200         struct Crypto1State mpcs = {0, 0};
 201         struct Crypto1State *pcs;
 202         pcs = &mpcs;
 203
 204         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 205
 206         clear_trace();
 207         set_tracing(true);
 208
 209         LED_A_ON();
 210         LED_B_OFF();
 211         LED_C_OFF();
 212
 213         isOK = 1;
 214         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
 215                 isOK = 0;
 216                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
 217         }
 218
 219
 220         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
 221                 isOK = 0;
 222                 if (MF_DBGLEVEL >= 1)   Dbprintf("Auth error");
 223         }
 224
 225         for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
 226                 if(mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf + 16 * blockNo)) {
 227                         isOK = 0;
 228                         if (MF_DBGLEVEL >= 1)   Dbprintf("Read sector %2d block %2d error", sectorNo, blockNo);
 229                         break;
 230                 }
 231         }
 232
 233         if(mifare_classic_halt(pcs, cuid)) {
 234                 if (MF_DBGLEVEL >= 1)   Dbprintf("Halt error");
 235         }
 236
 237         if (MF_DBGLEVEL >= 2) DbpString("READ SECTOR FINISHED");
 238
 239         crypto1_destroy(pcs);
 240
 241         LED_B_ON();
 242         cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,16*NumBlocksPerSector(sectorNo));
 243         LED_B_OFF();
 244
 245         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 246         LEDsoff();
 247         set_tracing(FALSE);
 248 }
 249
 250 // arg0 = blockNo (start)
 251 // arg1 = Pages (number of blocks)
 252 // arg2 = useKey
 253 // datain = KEY bytes
 254 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 255 {
 256         LEDsoff();
 257         LED_A_ON();
 258         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 259
 260         // free eventually allocated BigBuf memory
 261         BigBuf_free(); BigBuf_Clear_ext(false);
 262         clear_trace();
 263         set_tracing(true);
 264
 265         // params
 266         uint8_t blockNo = arg0;
 267         uint16_t blocks = arg1;
 268         bool useKey = (arg2 == 1); //UL_C
 269         bool usePwd = (arg2 == 2); //UL_EV1/NTAG
 270         uint32_t countblocks = 0;
 271         uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
 272         if (dataout == NULL){
 273                 Dbprintf("out of memory");
 274                 OnError(1);
 275                 return;
 276         }
 277
 278         int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);
 279         if (!len) {
 280                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);
 281                 OnError(1);
 282                 return;
 283         }
 284
 285         // UL-C authentication
 286         if ( useKey ) {
 287                 uint8_t key[16] = {0x00};
 288                 memcpy(key, datain, sizeof(key) );
 289
 290                 if ( !mifare_ultra_auth(key) ) {
 291                         OnError(1);
 292                         return;
 293                 }
 294         }
 295
 296         // UL-EV1 / NTAG authentication
 297         if (usePwd) {
 298                 uint8_t pwd[4] = {0x00};
 299                 memcpy(pwd, datain, sizeof(pwd));
 300                 uint8_t pack[4] = {0,0,0,0};
 301
 302                 if (!mifare_ul_ev1_auth(pwd, pack)){
 303                         OnError(1);
 304                         return;
 305                 }
 306         }
 307
 308         for (int i = 0; i < blocks; i++){
 309                 if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
 310                         Dbprintf("Data exceeds buffer!!");
 311                         break;
 312                 }
 313
 314                 len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 315
 316                 if (len) {
 317                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
 318                         // if no blocks read - error out
 319                         if (i==0){
 320                                 OnError(2);
 321                         return;
 322                         } else {
 323                                 //stop at last successful read block and return what we got
 324                                 break;
 325                         }
 326                 } else {
 327                         countblocks++;
 328                 }
 329         }
 330
 331         len = mifare_ultra_halt();
 332         if (len) {
 333                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Halt error");
 334                 OnError(3);
 335                 return;
 336         }
 337
 338         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 339
 340         countblocks *= 4;
 341
 342         cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 343         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 344         LEDsoff();
 345         BigBuf_free();
 346         set_tracing(FALSE);
 347 }
 348
 349 //-----------------------------------------------------------------------------
 350 // Select, Authenticate, Write a MIFARE tag.
 351 // read block
 352 //-----------------------------------------------------------------------------
 353 void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 354 {
 355         // params
 356         uint8_t blockNo = arg0;
 357         uint8_t keyType = arg1;
 358         uint64_t ui64Key = 0;
 359         byte_t blockdata[16] = {0x00};
 360
 361         ui64Key = bytes_to_num(datain, 6);
 362         memcpy(blockdata, datain + 10, 16);
 363
 364         // variables
 365         byte_t isOK = 0;
 366         uint8_t uid[10] = {0x00};
 367         uint32_t cuid = 0;
 368         struct Crypto1State mpcs = {0, 0};
 369         struct Crypto1State *pcs;
 370         pcs = &mpcs;
 371
 372         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 373
 374         clear_trace();
 375         set_tracing(true);
 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)) {
 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(pcs);
 407
 408         if (MF_DBGLEVEL >= 2)   DbpString("WRITE BLOCK FINISHED");
 409
 410         cmd_send(CMD_ACK,isOK,0,0,0,0);
 411
 412         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 413         LEDsoff();
 414         set_tracing(FALSE);
 415 }
 416
 417 /* // Command not needed but left for future testing
 418 void MifareUWriteBlockCompat(uint8_t arg0, uint8_t *datain)
 419 {
 420         uint8_t blockNo = arg0;
 421         byte_t blockdata[16] = {0x00};
 422
 423         memcpy(blockdata, datain, 16);
 424
 425         uint8_t uid[10] = {0x00};
 426
 427         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 428
 429         clear_trace();
 430         set_tracing(true);
 431         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 432
 433         if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {
 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         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 476
 477         clear_trace();
 478         set_tracing(true);
 479
 480         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
 481                 if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
 482                 OnError(0);
 483                 return;
 484         };
 485
 486         // UL-C authentication
 487         if ( useKey ) {
 488                 uint8_t key[16] = {0x00};
 489                 memcpy(key, datain+4, sizeof(key) );
 490
 491                 if ( !mifare_ultra_auth(key) ) {
 492                         OnError(1);
 493                         return;
 494                 }
 495         }
 496
 497         // UL-EV1 / NTAG authentication
 498         if (usePwd) {
 499                 uint8_t pwd[4] = {0x00};
 500                 memcpy(pwd, datain+4, 4);
 501                 uint8_t pack[4] = {0,0,0,0};
 502                 if (!mifare_ul_ev1_auth(pwd, pack)) {
 503                         OnError(1);
 504                         return;
 505                 }
 506         }
 507
 508         if(mifare_ultra_writeblock(blockNo, blockdata)) {
 509                 if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 510                 OnError(0);
 511                 return;
 512         };
 513
 514         if(mifare_ultra_halt()) {
 515                 if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
 516                 OnError(0);
 517                 return;
 518         };
 519
 520         if (MF_DBGLEVEL >= 2) DbpString("WRITE BLOCK FINISHED");
 521
 522         cmd_send(CMD_ACK,1,0,0,0,0);
 523         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 524         LEDsoff();
 525         set_tracing(FALSE);
 526 }
 527
 528 void MifareUSetPwd(uint8_t arg0, uint8_t *datain){
 529
 530         uint8_t pwd[16] = {0x00};
 531         byte_t blockdata[4] = {0x00};
 532
 533         memcpy(pwd, datain, 16);
 534
 535         LED_A_ON(); LED_B_OFF(); LED_C_OFF();
 536         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 537
 538         clear_trace();
 539         set_tracing(true);
 540
 541         if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {
 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         set_tracing(FALSE);
 597 }
 598
 599 // Return 1 if the nonce is invalid else return 0
 600 int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {
 601         return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \
 602         (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \
 603         (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;
 604 }
 605
 606
 607 //-----------------------------------------------------------------------------
 608 // acquire encrypted nonces in order to perform the attack described in
 609 // Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
 610 // Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
 611 // Computer and Communications Security, 2015
 612 //-----------------------------------------------------------------------------
 613 #define AUTHENTICATION_TIMEOUT  848 //848                       // card times out 1ms after wrong authentication (according to NXP documentation)
 614 #define PRE_AUTHENTICATION_LEADTIME 400         // some (non standard) cards need a pause after select before they are ready for first authentication
 615
 616 void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain)
 617 {
 618         uint64_t ui64Key = 0;
 619         uint8_t uid[10] = {0x00};
 620         uint32_t cuid = 0;
 621         uint8_t cascade_levels = 0;
 622         struct Crypto1State mpcs = {0, 0};
 623         struct Crypto1State *pcs;
 624         pcs = &mpcs;
 625         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
 626         int16_t isOK = 0;
 627         uint8_t par_enc[1] = {0x00};
 628         uint8_t nt_par_enc = 0;
 629         uint8_t buf[USB_CMD_DATA_SIZE] = {0x00};
 630         uint32_t timeout = 0;
 631
 632         uint8_t blockNo = arg0 & 0xff;
 633         uint8_t keyType = (arg0 >> 8) & 0xff;
 634         uint8_t targetBlockNo = arg1 & 0xff;
 635         uint8_t targetKeyType = (arg1 >> 8) & 0xff;
 636         ui64Key = bytes_to_num(datain, 6);
 637         bool initialize = flags & 0x0001;
 638         bool slow = flags & 0x0002;
 639         bool field_off = flags & 0x0004;
 640
 641         LED_A_ON();
 642         LED_C_OFF();
 643
 644         if (initialize) {
 645                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 646                 clear_trace();
 647                 set_tracing(FALSE);
 648         }
 649         LED_C_ON();
 650
 651         uint16_t num_nonces = 0;
 652         bool have_uid = false;
 653         for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {
 654
 655                 // Test if the action was cancelled
 656                 if(BUTTON_PRESS()) {
 657                         isOK = 2;
 658                         field_off = true;
 659                         break;
 660                 }
 661
 662                 if (!have_uid) { // need a full select cycle to get the uid first
 663                         iso14a_card_select_t card_info;
 664                         if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0)) {
 665                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (ALL)");
 666                                 continue;
 667                         }
 668                         switch (card_info.uidlen) {
 669                                 case 4 : cascade_levels = 1; break;
 670                                 case 7 : cascade_levels = 2; break;
 671                                 case 10: cascade_levels = 3; break;
 672                                 default: break;
 673                         }
 674                         have_uid = true;
 675                 } else { // no need for anticollision. We can directly select the card
 676                         if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels)) {
 677                                 if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Can't select card (UID)");
 678                                 continue;
 679                         }
 680                 }
 681
 682                 if (slow) {
 683                         timeout = GetCountSspClk() + PRE_AUTHENTICATION_LEADTIME;
 684                         while(GetCountSspClk() < timeout);
 685                 }
 686
 687                 uint32_t nt1;
 688                 if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL)) {
 689                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth1 error");
 690                         continue;
 691                 }
 692
 693                 // nested authentication
 694                 uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);
 695                 if (len != 4) {
 696                         if (MF_DBGLEVEL >= 1)   Dbprintf("AcquireNonces: Auth2 error len=%d", len);
 697                         continue;
 698                 }
 699
 700                 // send a dummy byte as reader response in order to trigger the cards authentication timeout
 701                 uint8_t dummy_answer = 0;
 702                 ReaderTransmit(&dummy_answer, 1, NULL);
 703                 timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
 704
 705                 num_nonces++;
 706                 if (num_nonces % 2) {
 707                         memcpy(buf+i, receivedAnswer, 4);
 708                         nt_par_enc = par_enc[0] & 0xf0;
 709                 } else {
 710                         nt_par_enc |= par_enc[0]  >> 4;
 711                         memcpy(buf+i+4, receivedAnswer, 4);
 712                         memcpy(buf+i+8, &nt_par_enc, 1);
 713                         i += 9;
 714                 }
 715                 // wait for the card to become ready again
 716                 while(GetCountSspClk() < timeout);
 717         }
 718
 719         LED_C_OFF();
 720         crypto1_destroy(pcs);
 721         LED_B_ON();
 722         cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));
 723         LED_B_OFF();
 724
 725         if (MF_DBGLEVEL >= 3)   DbpString("AcquireEncryptedNonces finished");
 726
 727         if (field_off) {
 728                 FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 729                 LEDsoff();
 730                 //set_tracing(FALSE);
 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 = 0;
 753         static uint16_t dmin, dmax;
 754         uint8_t uid[10] = {0x00};
 755         uint32_t cuid = 0, nt1, nt2, nttmp, nttest, ks1;
 756         uint8_t par[1] = {0x00};
 757         uint32_t target_nt[2] = {0x00}, target_ks[2] = {0x00};
 758
 759         uint8_t par_array[4] = {0x00};
 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] = {0x00};
 765
 766         uint32_t auth1_time, auth2_time;
 767         static uint16_t delta_time = 0;
 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(); BigBuf_Clear_ext(false);
 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)) {
 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                         auth2_time = (delta_time) ? auth1_time + delta_time : 0;
 819
 820                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_NESTED, &nt2, &auth2_time)) {
 821                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error");
 822                                 rtr--;
 823                                 continue;
 824                         };
 825
 826                         nttmp = prng_successor(nt1, 100);                               //NXP Mifare is typical around 840,but for some unlicensed/compatible mifare card this can be 160
 827                         for (i = 101; i < 1200; i++) {
 828                                 nttmp = prng_successor(nttmp, 1);
 829                                 if (nttmp == nt2) break;
 830                         }
 831
 832                         if (i != 1200) {
 833                                 if (rtr != 0) {
 834                                         davg += i;
 835                                         dmin = MIN(dmin, i);
 836                                         dmax = MAX(dmax, i);
 837                                 }
 838                                 else {
 839                                         delta_time = auth2_time - auth1_time + 32;  // allow some slack for proper timing
 840                                 }
 841                                 if (MF_DBGLEVEL >= 3) Dbprintf("Nested: calibrating... ntdist=%d", i);
 842                         } else {
 843                                 unsuccessfull_tries++;
 844                                 if (unsuccessfull_tries > NESTED_MAX_TRIES) {   // card isn't vulnerable to nested attack (random numbers are not predictable)
 845                                         isOK = -3;
 846                                 }
 847                         }
 848                 }
 849
 850                 davg = (davg + (rtr - 1)/2) / (rtr - 1);
 851
 852                 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);
 853
 854                 dmin = davg - 2;
 855                 dmax = davg + 2;
 856
 857                 LED_B_OFF();
 858         }
 859 //  -------------------------------------------------------------------------------------------------
 860
 861         LED_C_ON();
 862
 863         //  get crypted nonces for target sector
 864         for(i=0; i < 2 && !isOK; i++) { // look for exactly two different nonces
 865
 866                 target_nt[i] = 0;
 867                 while(target_nt[i] == 0) { // continue until we have an unambiguous nonce
 868
 869                         // prepare next select. No need to power down the card.
 870                         if(mifare_classic_halt(pcs, cuid)) {
 871                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Halt error");
 872                                 continue;
 873                         }
 874
 875                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
 876                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Can't select card");
 877                                 continue;
 878                         };
 879
 880                         auth1_time = 0;
 881                         if(mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, &auth1_time)) {
 882                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth1 error");
 883                                 continue;
 884                         };
 885
 886                         // nested authentication
 887                         auth2_time = auth1_time + delta_time;
 888
 889                         len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par, &auth2_time);
 890                         if (len != 4) {
 891                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Nested: Auth2 error len=%d", len);
 892                                 continue;
 893                         };
 894
 895                         nt2 = bytes_to_num(receivedAnswer, 4);
 896                         if (MF_DBGLEVEL >= 3) Dbprintf("Nonce#%d: Testing nt1=%08x nt2enc=%08x nt2par=%02x", i+1, nt1, nt2, par[0]);
 897
 898                         // Parity validity check
 899 //                      for (j = 0; j < 4; j++) {
 900 //                              par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));
 901 //                      }
 902                         par_array[0] = (oddparity8(receivedAnswer[0]) != ((par[0] >> (7-0)) & 0x01));
 903                         par_array[1] = (oddparity8(receivedAnswer[1]) != ((par[0] >> (7-1)) & 0x01));
 904                         par_array[2] = (oddparity8(receivedAnswer[2]) != ((par[0] >> (7-2)) & 0x01));
 905                         par_array[3] = (oddparity8(receivedAnswer[3]) != ((par[0] >> (7-3)) & 0x01));
 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(pcs);
 937
 938         byte_t buf[4 + 4 * 4] = {0};
 939         memcpy(buf, &cuid, 4);
 940         memcpy(buf+4, &target_nt[0], 4);
 941         memcpy(buf+8, &target_ks[0], 4);
 942         memcpy(buf+12, &target_nt[1], 4);
 943         memcpy(buf+16, &target_ks[1], 4);
 944
 945         LED_B_ON();
 946         cmd_send(CMD_ACK, isOK, 0, targetBlockNo + (targetKeyType * 0x100), buf, sizeof(buf));
 947         LED_B_OFF();
 948
 949         if (MF_DBGLEVEL >= 3)   DbpString("NESTED FINISHED");
 950
 951         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 952         LEDsoff();
 953         set_tracing(FALSE);
 954 }
 955
 956 //-----------------------------------------------------------------------------
 957 // MIFARE check keys. key count up to 85.
 958 //
 959 //-----------------------------------------------------------------------------
 960 void MifareChkKeys(uint16_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain) {
 961         uint8_t blockNo = arg0 & 0xff;
 962         uint8_t keyType = (arg0 >> 8) & 0xff;
 963         bool clearTrace = arg1;
 964         uint8_t keyCount = arg2;
 965         uint64_t ui64Key = 0;
 966
 967         bool have_uid = FALSE;
 968         uint8_t cascade_levels = 0;
 969         uint32_t timeout = 0;
 970
 971         int i;
 972         byte_t isOK = 0;
 973         uint8_t uid[10] = {0x00};
 974         uint32_t cuid = 0;
 975         struct Crypto1State mpcs = {0, 0};
 976         struct Crypto1State *pcs;
 977         pcs = &mpcs;
 978
 979         // save old debuglevel, and tempory turn off dbg printing. speedissues.
 980         int OLD_MF_DBGLEVEL = MF_DBGLEVEL;
 981         MF_DBGLEVEL = MF_DBG_NONE;
 982
 983         LEDsoff();
 984         LED_A_ON();
 985
 986         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 987
 988         if (clearTrace)
 989                 clear_trace();
 990
 991         set_tracing(TRUE);
 992
 993         for (i = 0; i < keyCount; ++i) {
 994
 995                 //mifare_classic_halt(pcs, cuid);
 996
 997                 // this part is from Piwi's faster nonce collecting part in Hardnested.
 998                 if (!have_uid) { // need a full select cycle to get the uid first
 999                         iso14a_card_select_t card_info;
1000                         if(!iso14443a_select_card(uid, &card_info, &cuid, true, 0)) {
1001                                 if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Can't select card (ALL)");
1002                                 break;
1003                         }
1004                         switch (card_info.uidlen) {
1005                                 case 4 : cascade_levels = 1; break;
1006                                 case 7 : cascade_levels = 2; break;
1007                                 case 10: cascade_levels = 3; break;
1008                                 default: break;
1009                         }
1010                         have_uid = TRUE;
1011                 } else { // no need for anticollision. We can directly select the card
1012                         if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels)) {
1013                                 if (MF_DBGLEVEL >= 1)   Dbprintf("ChkKeys: Can't select card (UID)");
1014                                 continue;
1015                         }
1016                 }
1017
1018                 ui64Key = bytes_to_num(datain + i * 6, 6);
1019
1020                 if (mifare_classic_auth(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {
1021
1022                         uint8_t dummy_answer = 0;
1023                         ReaderTransmit(&dummy_answer, 1, NULL);
1024                         timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
1025
1026                         // wait for the card to become ready again
1027                         while(GetCountSspClk() < timeout);
1028
1029                         continue;
1030                 }
1031                 isOK = 1;
1032                 break;
1033         }
1034
1035         LED_B_ON();
1036     cmd_send(CMD_ACK, isOK, 0, 0, datain + i * 6, 6);
1037
1038         // restore debug level
1039         MF_DBGLEVEL = OLD_MF_DBGLEVEL;
1040
1041         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1042         LEDsoff();
1043         set_tracing(FALSE);
1044         crypto1_destroy(pcs);
1045 }
1046
1047 //-----------------------------------------------------------------------------
1048 // MIFARE commands set debug level
1049 //
1050 //-----------------------------------------------------------------------------
1051 void MifareSetDbgLvl(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1052         MF_DBGLEVEL = arg0;
1053         Dbprintf("Debug level: %d", MF_DBGLEVEL);
1054 }
1055
1056 //-----------------------------------------------------------------------------
1057 // Work with emulator memory
1058 //
1059 // Note: we call FpgaDownloadAndGo(FPGA_BITSTREAM_HF) here although FPGA is not
1060 // involved in dealing with emulator memory. But if it is called later, it might
1061 // destroy the Emulator Memory.
1062 //-----------------------------------------------------------------------------
1063
1064 void MifareEMemClr(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1065         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1066         emlClearMem();
1067 }
1068
1069 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1070         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1071         if (arg2==0) arg2 = 16; // backwards compat... default bytewidth
1072         emlSetMem_xt(datain, arg0, arg1, arg2); // data, block num, blocks count, block byte width
1073 }
1074
1075 void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1076         FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
1077         byte_t buf[USB_CMD_DATA_SIZE] = {0x00};
1078         emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
1079
1080         LED_B_ON();
1081         cmd_send(CMD_ACK,arg0,arg1,0,buf,USB_CMD_DATA_SIZE);
1082         LED_B_OFF();
1083 }
1084
1085 //-----------------------------------------------------------------------------
1086 // Load a card into the emulator memory
1087 //
1088 //-----------------------------------------------------------------------------
1089 void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){
1090         uint8_t numSectors = arg0;
1091         uint8_t keyType = arg1;
1092         uint64_t ui64Key = 0;
1093         uint32_t cuid = 0;
1094         struct Crypto1State mpcs = {0, 0};
1095         struct Crypto1State *pcs;
1096         pcs = &mpcs;
1097
1098         // variables
1099         byte_t dataoutbuf[16] = {0x00};
1100         byte_t dataoutbuf2[16] = {0x00};
1101         uint8_t uid[10] = {0x00};
1102
1103         LED_A_ON();
1104         LED_B_OFF();
1105         LED_C_OFF();
1106         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1107
1108         clear_trace();
1109         set_tracing(TRUE);
1110
1111         bool isOK = true;
1112
1113         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1114                 isOK = false;
1115                 if (MF_DBGLEVEL >= 1)   Dbprintf("Can't select card");
1116         }
1117
1118         for (uint8_t sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {
1119                 ui64Key = emlGetKey(sectorNo, keyType);
1120                 if (sectorNo == 0){
1121                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_FIRST)) {
1122                                 isOK = false;
1123                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth error", sectorNo);
1124                                 break;
1125                         }
1126                 } else {
1127                         if(isOK && mifare_classic_auth(pcs, cuid, FirstBlockOfSector(sectorNo), keyType, ui64Key, AUTH_NESTED)) {
1128                                 isOK = false;
1129                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Sector[%2d]. Auth nested error", sectorNo);
1130                                 break;
1131                         }
1132                 }
1133
1134                 for (uint8_t blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {
1135                         if(isOK && mifare_classic_readblock(pcs, cuid, FirstBlockOfSector(sectorNo) + blockNo, dataoutbuf)) {
1136                                 isOK = false;
1137                                 if (MF_DBGLEVEL >= 1)   Dbprintf("Error reading sector %2d block %2d", sectorNo, blockNo);
1138                                 break;
1139                         }
1140                         if (isOK) {
1141                                 if (blockNo < NumBlocksPerSector(sectorNo) - 1) {
1142                                         emlSetMem(dataoutbuf, FirstBlockOfSector(sectorNo) + blockNo, 1);
1143                                 } else {        // sector trailer, keep the keys, set only the AC
1144                                         emlGetMem(dataoutbuf2, FirstBlockOfSector(sectorNo) + blockNo, 1);
1145                                         memcpy(&dataoutbuf2[6], &dataoutbuf[6], 4);
1146                                         emlSetMem(dataoutbuf2,  FirstBlockOfSector(sectorNo) + blockNo, 1);
1147                                 }
1148                         }
1149                 }
1150
1151         }
1152
1153         if(mifare_classic_halt(pcs, cuid))
1154                 if (MF_DBGLEVEL >= 1)
1155                         Dbprintf("Halt error");
1156
1157         //  ----------------------------- crypto1 destroy
1158         crypto1_destroy(pcs);
1159
1160         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1161         LEDsoff();
1162
1163         if (MF_DBGLEVEL >= 2) DbpString("EMUL FILL SECTORS FINISHED");
1164
1165         set_tracing(FALSE);
1166 }
1167
1168
1169 //-----------------------------------------------------------------------------
1170 // Work with "magic Chinese" card (email him: ouyangweidaxian@live.cn)
1171 //
1172 // PARAMS - workFlags
1173 // bit 0 - need get UID
1174 // bit 1 - need wupC
1175 // bit 2 - need HALT after sequence
1176 // bit 3 - need turn on FPGA before sequence
1177 // bit 4 - need turn off FPGA
1178 // bit 5 - need to set datain instead of issuing USB reply (called via ARM for StandAloneMode14a)
1179 // bit 6 - wipe tag.
1180 //-----------------------------------------------------------------------------
1181 // magic uid card generation 1 commands
1182 uint8_t wupC1[] = { MIFARE_MAGICWUPC1 };
1183 uint8_t wupC2[] = { MIFARE_MAGICWUPC2 };
1184 uint8_t wipeC[] = { MIFARE_MAGICWIPEC };
1185
1186 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1187
1188         // params
1189         uint8_t workFlags = arg0;
1190         uint8_t blockNo = arg1;
1191
1192         // variables
1193         bool isOK = false; //assume we will get an error
1194         uint8_t errormsg = 0x00;
1195         uint8_t uid[10] = {0x00};
1196         uint8_t data[18] = {0x00};
1197         uint32_t cuid = 0;
1198
1199         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1200         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1201
1202         if (workFlags & MAGIC_INIT) {
1203                 LED_A_ON();
1204                 LED_B_OFF();
1205                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1206                 clear_trace();
1207                 set_tracing(TRUE);
1208         }
1209
1210         //loop doesn't loop just breaks out if error
1211         while (true) {
1212                 // read UID and return to client with write
1213                 if (workFlags & MAGIC_UID) {
1214                         if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
1215                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("Can't select card");
1216                                 errormsg = MAGIC_UID;
1217                         }
1218                         mifare_classic_halt_ex(NULL);
1219                         break;
1220                 }
1221
1222                 // wipe tag, fill it with zeros
1223                 if (workFlags & MAGIC_WIPE){
1224                         ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1225                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1226                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wupC1 error");
1227                                 errormsg = MAGIC_WIPE;
1228                                 break;
1229                         }
1230
1231                         ReaderTransmit(wipeC, sizeof(wipeC), NULL);
1232                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1233                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wipeC error");
1234                                 errormsg = MAGIC_WIPE;
1235                                 break;
1236                         }
1237
1238                         mifare_classic_halt_ex(NULL);
1239                 }
1240
1241                 // write block
1242                 if (workFlags & MAGIC_WUPC) {
1243                         ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1244                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1245                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wupC1 error");
1246                                 errormsg = MAGIC_WUPC;
1247                                 break;
1248                         }
1249
1250                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1251                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1252                                 if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("wupC2 error");
1253                                 errormsg = MAGIC_WUPC;
1254                                 break;
1255                         }
1256                 }
1257
1258                 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {
1259                         if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("write block send command error");
1260                         errormsg = 4;
1261                         break;
1262                 }
1263
1264                 memcpy(data, datain, 16);
1265                 AppendCrc14443a(data, 16);
1266
1267                 ReaderTransmit(data, sizeof(data), NULL);
1268                 if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {
1269                         if (MF_DBGLEVEL >= MF_DBG_ERROR)        Dbprintf("write block send data error");
1270                         errormsg = 0;
1271                         break;
1272                 }
1273
1274                 if (workFlags & MAGIC_OFF)
1275                         mifare_classic_halt_ex(NULL);
1276
1277                 isOK = true;
1278                 break;
1279
1280         } // end while
1281
1282         if (isOK )
1283                 cmd_send(CMD_ACK,1,0,0,uid,sizeof(uid));
1284         else
1285                 OnErrorMagic(errormsg);
1286
1287         if (workFlags & MAGIC_OFF)
1288                 OnSuccessMagic();
1289 }
1290
1291 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain){
1292
1293         uint8_t workFlags = arg0;
1294         uint8_t blockNo = arg1;
1295         uint8_t errormsg = 0x00;
1296         bool isOK = false; //assume we will get an error
1297
1298         // variables
1299         uint8_t data[MAX_MIFARE_FRAME_SIZE];
1300         uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
1301         uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
1302
1303         memset(data, 0x00, sizeof(data));
1304
1305         if (workFlags & MAGIC_INIT) {
1306                 LED_A_ON();
1307                 LED_B_OFF();
1308                 iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1309                 clear_trace();
1310                 set_tracing(TRUE);
1311         }
1312
1313         //loop doesn't loop just breaks out if error or done
1314         while (true) {
1315                 if (workFlags & MAGIC_WUPC) {
1316                         ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1317                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1318                                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");
1319                                 errormsg = MAGIC_WUPC;
1320                                 break;
1321                         }
1322
1323                         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1324                         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1325                                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");
1326                                 errormsg = MAGIC_WUPC;
1327                                 break;
1328                         }
1329                 }
1330
1331                 // read block
1332                 if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {
1333                         if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("read block send command error");
1334                         errormsg = 0;
1335                         break;
1336                 }
1337
1338                 memcpy(data, receivedAnswer, sizeof(data));
1339
1340                 // send HALT
1341                 if (workFlags & MAGIC_HALT)
1342                         mifare_classic_halt_ex(NULL);
1343
1344                 isOK = true;
1345                 break;
1346         }
1347         // if MAGIC_DATAIN, the data stays on device side.
1348         if (workFlags & MAGIC_DATAIN) {
1349                 if (isOK)
1350                         memcpy(datain, data, sizeof(data));
1351         } else {
1352                 if (isOK)
1353                         cmd_send(CMD_ACK,1,0,0,data,sizeof(data));
1354                 else
1355                         OnErrorMagic(errormsg);
1356         }
1357
1358         if (workFlags & MAGIC_OFF)
1359                 OnSuccessMagic();
1360 }
1361
1362 void MifareCIdent(){
1363
1364         // variables
1365         bool isOK = true;
1366         uint8_t receivedAnswer[1] = {0x00};
1367         uint8_t receivedAnswerPar[1] = {0x00};
1368
1369         ReaderTransmitBitsPar(wupC1, 7, NULL, NULL);
1370         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1371                 isOK = false;
1372         }
1373
1374         ReaderTransmit(wupC2, sizeof(wupC2), NULL);
1375         if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {
1376                 isOK = false;
1377         }
1378
1379         // removed the if,  since some magic tags misbehavies and send an answer to it.
1380         mifare_classic_halt(NULL, 0);
1381         cmd_send(CMD_ACK,isOK,0,0,0,0);
1382 }
1383
1384 void OnSuccessMagic(){
1385         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1386         LEDsoff();
1387         set_tracing(FALSE);
1388 }
1389 void OnErrorMagic(uint8_t reason){
1390         //          ACK, ISOK, reason,0,0,0
1391         cmd_send(CMD_ACK,0,reason,0,0,0);
1392         OnSuccessMagic();
1393 }
1394 //
1395 // DESFIRE
1396 //
1397 void Mifare_DES_Auth1(uint8_t arg0, uint8_t *datain){
1398         byte_t dataout[12] = {0x00};
1399         uint8_t uid[10] = {0x00};
1400         uint32_t cuid = 0;
1401
1402         iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
1403         clear_trace();
1404         set_tracing(true);
1405
1406         int len = iso14443a_select_card(uid, NULL, &cuid, true, 0);
1407         if(!len) {
1408                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");
1409                 OnError(1);
1410                 return;
1411         };
1412
1413         if(mifare_desfire_des_auth1(cuid, dataout)){
1414                 if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication part1: Fail.");
1415                 OnError(4);
1416                 return;
1417         }
1418
1419         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 1 FINISHED");
1420     cmd_send(CMD_ACK, 1, cuid, 0, dataout, sizeof(dataout));
1421 }
1422
1423 void Mifare_DES_Auth2(uint32_t arg0, uint8_t *datain){
1424         uint32_t cuid = arg0;
1425         uint8_t key[16] = {0x00};
1426         byte_t dataout[12] = {0x00};
1427         byte_t isOK = 0;
1428
1429         memcpy(key, datain, 16);
1430
1431         isOK = mifare_desfire_des_auth2(cuid, key, dataout);
1432
1433         if( isOK) {
1434             if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication part2: Failed");
1435                 OnError(4);
1436                 return;
1437         }
1438
1439         if (MF_DBGLEVEL >= MF_DBG_EXTENDED) DbpString("AUTH 2 FINISHED");
1440
1441         cmd_send(CMD_ACK, isOK, 0, 0, dataout, sizeof(dataout));
1442         FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
1443         LEDsoff();
1444         set_tracing(FALSE);
1445 }